Merge branch 'main' into codex/ipc

Introduce a per-user OOBE state model and hardened launch/elevation handling. Adds OobeStateFile/OobeLaunchDecision models, OobeStateService (persisting %LOCALAPPDATA%/.launcher/state/oobe-state.json), and LauncherExecutionContext to capture elevation and user SID. CommandContext now normalizes/infers launch-source values (normal, postinstall, apply-update, plugin-install, debug-preview) and exposes maintenance checks. LauncherFlowCoordinator propagates richer launcher context details for diagnostics and suppresses OOBE for elevated/maintenance contexts. PluginInstallerService avoids requesting elevation for user-scoped installs and returns a clear error when installation target is outside the current user's LocalAppData. LauncherClient maps and surfaces result codes, UpdateWorkflow and installer invocation now pass explicit --launch-source values, and WelcomeOobeStep persists OOBE completion via the new service. Adds unit tests (CommandContext, OobeStateService, PluginInstallerService), docs/specs/checklists for the contract, and makes internals visible to tests.

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: Build
+name: Build
 
 on:
   push:
@@ -10,6 +10,7 @@ on:
 env:
   DOTNET_VERSION: '10.0.x'
   Solution_Name: LanMountainDesktop.slnx
+  DOTNET_gcServer: 1
 
 jobs:
   build-windows:
@@ -31,6 +32,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -63,12 +65,22 @@ jobs:
           sudo apt-get install -y \
             libfontconfig1 libfreetype6 \
             libx11-6 libxrandr2 libxinerama1 \
-            libxi6 libxcursor1 libxext6
+            libxi6 libxcursor1 libxext6 \
+            libxrender1 libxkbcommon-x11-0 \
+            clang zlib1g-dev
+
+          # Ubuntu 24.04+ moved several packages to t64 names.
+          sudo apt-get install -y libasound2t64 || sudo apt-get install -y libasound2
+          sudo apt-get install -y libportaudio2t64 || sudo apt-get install -y libportaudio2
+
+          # Prefer modern WebKit package, fallback for older images.
+          sudo apt-get install -y libwebkit2gtk-4.1-dev || sudo apt-get install -y libwebkit2gtk-4.0-dev
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -95,10 +107,14 @@ jobs:
           fetch-depth: 0
           submodules: recursive
 
+      - name: Install dependencies
+        run: brew install portaudio
+
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -129,6 +145,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Pack SDK and template packages
         shell: pwsh

.github/workflows/code-quality.yml

@@ -1,4 +1,4 @@
-name: Quality Check
+name: Quality Check
 
 on:
   pull_request:
@@ -9,6 +9,7 @@ on:
 env:
   DOTNET_VERSION: '10.0.x'
   Solution_Name: LanMountainDesktop.slnx
+  DOTNET_gcServer: 1
 
 jobs:
   analyze:
@@ -24,12 +25,13 @@ jobs:
         with:
           fetch-depth: 0
           submodules: recursive
-          ref: ${{ github.event.pull_request.head.sha }}
+          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}

.github/workflows/ddss-publish.yml

@@ -0,0 +1,166 @@
+name: DDSS
+
+on:
+  workflow_run:
+    workflows:
+      - PLONDS
+    types:
+      - completed
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag'
+        required: true
+        type: string
+
+env:
+  DOTNET_VERSION: '10.0.x'
+
+jobs:
+  publish:
+    if: ${{ github.event_name != 'workflow_run' || github.event.workflow_run.conclusion == 'success' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      actions: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Resolve release tag
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            RAW_TAG="${{ github.event.inputs.tag }}"
+            if [[ "$RAW_TAG" == v* ]]; then
+              TAG="$RAW_TAG"
+            else
+              TAG="v$RAW_TAG"
+            fi
+          else
+            gh run download "${{ github.event.workflow_run.id }}" -n plonds-run-metadata -D plonds-run-metadata
+            TAG="$(tr -d '\r\n' < plonds-run-metadata/tag.txt)"
+          fi
+
+          echo "RELEASE_TAG=${TAG}" >> "$GITHUB_ENV"
+          echo "S3_BASE_URL=${{ vars.S3_ENDPOINT }}/${{ vars.S3_BUCKET }}/lanmountain/update/releases/${TAG}/assets" >> "$GITHUB_ENV"
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: preview
+
+      - name: Prepare signing key
+        env:
+          UPDATE_PRIVATE_KEY_PEM: ${{ secrets.UPDATE_PRIVATE_KEY_PEM }}
+          PLONDS_SIGNING_KEY: ${{ secrets.PLONDS_SIGNING_KEY }}
+          PDC_SIGNING_KEY: ${{ secrets.PDC_SIGNING_KEY }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          KEY="${PLONDS_SIGNING_KEY:-}"
+          if [[ -z "$KEY" ]]; then KEY="${UPDATE_PRIVATE_KEY_PEM:-}"; fi
+          if [[ -z "$KEY" ]]; then KEY="${PDC_SIGNING_KEY:-}"; fi
+          if [[ -z "$KEY" ]]; then
+            echo "No signing key is configured."
+            exit 1
+          fi
+          printf '%s' "$KEY" > update-private-key.pem
+          echo "UPDATE_PRIVATE_KEY_PATH=$PWD/update-private-key.pem" >> "$GITHUB_ENV"
+
+      - name: Build PLONDS tool
+        run: dotnet build PenguinLogisticsOnlineNetworkDistributionSystem/src/Plonds.Tool/Plonds.Tool.csproj -c Release
+
+      - name: Download release assets
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p release-assets
+          gh release download "$RELEASE_TAG" -D release-assets
+          find release-assets -maxdepth 1 -type f | sort
+
+      - name: Upload release assets to Rainyun S3
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.S3_ACCESS_KEY }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.S3_SECRET_KEY }}
+          AWS_DEFAULT_REGION: ${{ vars.S3_REGION }}
+          AWS_REGION: ${{ vars.S3_REGION }}
+          S3_ENDPOINT: ${{ vars.S3_ENDPOINT }}
+          S3_BUCKET: ${{ vars.S3_BUCKET }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          aws --version
+          for file in release-assets/*; do
+            [[ -f "$file" ]] || continue
+            name="$(basename "$file")"
+            if [[ "$name" == "ddss.json" || "$name" == "ddss.json.sig" ]]; then
+              continue
+            fi
+            key="lanmountain/update/releases/${RELEASE_TAG}/assets/${name}"
+            sha256="$(sha256sum "$file" | awk '{print $1}')"
+            existing_sha="$(aws --endpoint-url "$S3_ENDPOINT" --region "$AWS_REGION" s3api head-object --bucket "$S3_BUCKET" --key "$key" --query 'Metadata.sha256' --output text 2>/dev/null || true)"
+            if [[ "$existing_sha" == "$sha256" ]]; then
+              echo "Skip existing asset: $name"
+              continue
+            fi
+            aws --endpoint-url "$S3_ENDPOINT" --region "$AWS_REGION" s3api put-object \
+              --bucket "$S3_BUCKET" \
+              --key "$key" \
+              --body "$file" \
+              --metadata "sha256=$sha256"
+          done
+
+      - name: Build DDSS manifest
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p ddss-output
+          dotnet run --project PenguinLogisticsOnlineNetworkDistributionSystem/src/Plonds.Tool/Plonds.Tool.csproj --configuration Release -- \
+            build-ddss \
+            --release-tag "$RELEASE_TAG" \
+            --assets-dir release-assets \
+            --output-dir ddss-output \
+            --private-key "$UPDATE_PRIVATE_KEY_PATH" \
+            --repository "${{ github.repository }}" \
+            --s3-base-url "$S3_BASE_URL"
+
+      - name: Upload DDSS manifest to release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          gh release upload "$RELEASE_TAG" ddss-output/ddss.json ddss-output/ddss.json.sig --clobber
+
+      - name: Upload DDSS manifest to Rainyun S3
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.S3_ACCESS_KEY }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.S3_SECRET_KEY }}
+          AWS_DEFAULT_REGION: ${{ vars.S3_REGION }}
+          AWS_REGION: ${{ vars.S3_REGION }}
+          S3_ENDPOINT: ${{ vars.S3_ENDPOINT }}
+          S3_BUCKET: ${{ vars.S3_BUCKET }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          for file in ddss-output/ddss.json ddss-output/ddss.json.sig; do
+            name="$(basename "$file")"
+            key="lanmountain/update/releases/${RELEASE_TAG}/assets/${name}"
+            sha256="$(sha256sum "$file" | awk '{print $1}')"
+            aws --endpoint-url "$S3_ENDPOINT" --region "$AWS_REGION" s3api put-object \
+              --bucket "$S3_BUCKET" \
+              --key "$key" \
+              --body "$file" \
+              --metadata "sha256=$sha256"
+          done

.github/workflows/plonds-build.yml

@@ -0,0 +1,235 @@
+name: PLONDS
+
+on:
+  release:
+    types:
+      - published
+      - prereleased
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag'
+        required: true
+        type: string
+      baseline_tag:
+        description: 'Optional baseline tag'
+        required: false
+        type: string
+      channel:
+        description: 'Update channel'
+        required: false
+        type: choice
+        default: stable
+        options:
+          - stable
+          - preview
+
+env:
+  DOTNET_VERSION: '10.0.x'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Resolve release context
+        shell: bash
+        run: |
+          if [[ "${{ github.event_name }}" == "release" ]]; then
+            TAG="${{ github.event.release.tag_name }}"
+            if [[ "${{ github.event.release.prerelease }}" == "true" ]]; then
+              CHANNEL="preview"
+            else
+              CHANNEL="stable"
+            fi
+            BASELINE_TAG=""
+          else
+            RAW_TAG="${{ github.event.inputs.tag }}"
+            if [[ "${RAW_TAG}" == v* ]]; then
+              TAG="${RAW_TAG}"
+            else
+              TAG="v${RAW_TAG}"
+            fi
+            CHANNEL="${{ github.event.inputs.channel }}"
+            BASELINE_TAG="${{ github.event.inputs.baseline_tag }}"
+          fi
+
+          echo "RELEASE_TAG=${TAG}" >> "$GITHUB_ENV"
+          echo "RELEASE_VERSION=${TAG#v}" >> "$GITHUB_ENV"
+          echo "RELEASE_CHANNEL=${CHANNEL}" >> "$GITHUB_ENV"
+          echo "BASELINE_TAG_INPUT=${BASELINE_TAG}" >> "$GITHUB_ENV"
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: preview
+
+      - name: Prepare signing key
+        env:
+          UPDATE_PRIVATE_KEY_PEM: ${{ secrets.UPDATE_PRIVATE_KEY_PEM }}
+          PLONDS_SIGNING_KEY: ${{ secrets.PLONDS_SIGNING_KEY }}
+          PDC_SIGNING_KEY: ${{ secrets.PDC_SIGNING_KEY }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          KEY="${PLONDS_SIGNING_KEY:-}"
+          if [[ -z "$KEY" ]]; then KEY="${UPDATE_PRIVATE_KEY_PEM:-}"; fi
+          if [[ -z "$KEY" ]]; then KEY="${PDC_SIGNING_KEY:-}"; fi
+          if [[ -z "$KEY" ]]; then
+            echo "No signing key is configured."
+            exit 1
+          fi
+          printf '%s' "$KEY" > update-private-key.pem
+          echo "UPDATE_PRIVATE_KEY_PATH=$PWD/update-private-key.pem" >> "$GITHUB_ENV"
+
+      - name: Build PLONDS tool
+        run: dotnet build PenguinLogisticsOnlineNetworkDistributionSystem/src/Plonds.Tool/Plonds.Tool.csproj -c Release
+
+      - name: Resolve baseline plan
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: pwsh
+        run: |
+          $ErrorActionPreference = 'Stop'
+          $repo = '${{ github.repository }}'
+          $tag = $env:RELEASE_TAG
+          $baselineInput = $env:BASELINE_TAG_INPUT
+          $currentRelease = gh release view $tag --repo $repo --json tagName,isPrerelease,assets,publishedAt | ConvertFrom-Json
+          $allReleases = gh api "repos/$repo/releases?per_page=100" | ConvertFrom-Json
+          $platforms = @('windows-x64', 'windows-x86', 'linux-x64')
+
+          $entries = foreach ($platform in $platforms) {
+            $assetName = "files-$platform.zip"
+            $currentAsset = $currentRelease.assets | Where-Object { $_.name -eq $assetName } | Select-Object -First 1
+            if (-not $currentAsset) {
+              throw "Current release $tag does not contain required asset $assetName"
+            }
+
+            $baselineRelease = $null
+            if (-not [string]::IsNullOrWhiteSpace($baselineInput)) {
+              $normalizedBaseline = if ($baselineInput.StartsWith('v')) { $baselineInput } else { "v$baselineInput" }
+              $baselineRelease = $allReleases | Where-Object { $_.tag_name -eq $normalizedBaseline } | Select-Object -First 1
+              if (-not $baselineRelease) {
+                throw "Specified baseline tag not found: $normalizedBaseline"
+              }
+            }
+            else {
+              $baselineRelease = $allReleases |
+                Where-Object {
+                  $_.tag_name -ne $tag -and
+                  -not $_.draft -and
+                  [bool]$_.prerelease -eq [bool]$currentRelease.isPrerelease -and
+                  ($_.assets | Where-Object { $_.name -eq $assetName } | Measure-Object).Count -gt 0
+                } |
+                Select-Object -First 1
+            }
+
+            [pscustomobject]@{
+              platform = $platform
+              assetName = $assetName
+              baselineTag = if ($baselineRelease) { $baselineRelease.tag_name } else { $null }
+              baselineVersion = if ($baselineRelease) { ($baselineRelease.tag_name -replace '^v', '') } else { $null }
+              isFullPayload = -not $baselineRelease
+            }
+          }
+
+          $plan = [pscustomobject]@{
+            tag = $tag
+            version = $env:RELEASE_VERSION
+            channel = $env:RELEASE_CHANNEL
+            platforms = $entries
+          }
+
+          $plan | ConvertTo-Json -Depth 8 | Set-Content plonds-plan.json -Encoding utf8
+          Get-Content plonds-plan.json
+
+      - name: Download payload zips
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: pwsh
+        run: |
+          $ErrorActionPreference = 'Stop'
+          $repo = '${{ github.repository }}'
+          $plan = Get-Content plonds-plan.json | ConvertFrom-Json
+
+          foreach ($entry in $plan.platforms) {
+            $currentDir = Join-Path $PWD "plonds-input/current/$($entry.platform)"
+            New-Item -ItemType Directory -Path $currentDir -Force | Out-Null
+            gh release download $plan.tag --repo $repo -p $entry.assetName -D $currentDir
+
+            if (-not [string]::IsNullOrWhiteSpace($entry.baselineTag)) {
+              $baselineDir = Join-Path $PWD "plonds-input/baseline/$($entry.platform)"
+              New-Item -ItemType Directory -Path $baselineDir -Force | Out-Null
+              gh release download $entry.baselineTag --repo $repo -p $entry.assetName -D $baselineDir
+            }
+          }
+
+      - name: Build delta assets
+        shell: pwsh
+        run: |
+          $ErrorActionPreference = 'Stop'
+          $plan = Get-Content plonds-plan.json | ConvertFrom-Json
+          foreach ($entry in $plan.platforms) {
+            $currentZip = Join-Path $PWD "plonds-input/current/$($entry.platform)/$($entry.assetName)"
+            $args = @(
+              'run', '--project', 'PenguinLogisticsOnlineNetworkDistributionSystem/src/Plonds.Tool/Plonds.Tool.csproj', '--configuration', 'Release', '--',
+              'build-delta',
+              '--platform', $entry.platform,
+              '--current-version', $plan.version,
+              '--current-tag', $plan.tag,
+              '--current-zip', $currentZip,
+              '--output-dir', 'plonds-output',
+              '--private-key', $env:UPDATE_PRIVATE_KEY_PATH,
+              '--channel', $plan.channel
+            )
+
+            if ([bool]$entry.isFullPayload) {
+              $args += @('--is-full-payload', 'true')
+            }
+            else {
+              $baselineZip = Join-Path $PWD "plonds-input/baseline/$($entry.platform)/$($entry.assetName)"
+              $args += @('--baseline-tag', $entry.baselineTag, '--baseline-version', $entry.baselineVersion, '--baseline-zip', $baselineZip)
+            }
+
+            dotnet @args
+          }
+
+          dotnet run --project PenguinLogisticsOnlineNetworkDistributionSystem/src/Plonds.Tool/Plonds.Tool.csproj --configuration Release -- `
+            build-index `
+            --release-tag $plan.tag `
+            --version $plan.version `
+            --channel $plan.channel `
+            --platform-summaries-dir plonds-output/platform-summaries `
+            --output-dir plonds-output `
+            --private-key $env:UPDATE_PRIVATE_KEY_PATH
+
+      - name: Upload PLONDS assets to release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          gh release upload "$RELEASE_TAG" plonds-output/release-assets/* --clobber
+
+      - name: Persist run metadata
+        shell: bash
+        run: |
+          mkdir -p plonds-run-metadata
+          printf '%s' "$RELEASE_TAG" > plonds-run-metadata/tag.txt
+
+      - name: Upload run metadata artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: plonds-run-metadata
+          path: plonds-run-metadata/tag.txt
+          if-no-files-found: error
+          retention-days: 7

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Release
+name: Release
 
 on:
   push:
@@ -19,6 +19,7 @@ on:
 env:
   DOTNET_VERSION: '10.0.x'
   Solution_Name: LanMountainDesktop.slnx
+  DOTNET_gcServer: 1
 
 jobs:
   prepare:
@@ -29,14 +30,22 @@ jobs:
       informational_version: ${{ steps.version.outputs.informational_version }}
       tag: ${{ steps.version.outputs.tag }}
       checkout_ref: ${{ steps.version.outputs.checkout_ref }}
-    
+      is_prerelease: ${{ steps.version.outputs.is_prerelease }}
+      release_channel: ${{ steps.version.outputs.release_channel }}
+
     steps:
+      - name: Checkout repository metadata
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
       - name: Get release info
         id: version
         run: |
           if [[ "${{ github.event_name }}" == "push" ]]; then
             TAG="${GITHUB_REF#refs/tags/}"
             CHECKOUT_REF="${GITHUB_REF}"
+            IS_PRERELEASE="false"
           else
             RAW_TAG="${{ github.event.inputs.tag }}"
             if [[ "${RAW_TAG}" == refs/tags/* ]]; then
@@ -46,19 +55,40 @@ jobs:
             else
               TAG="v${RAW_TAG}"
             fi
-            CHECKOUT_REF="${GITHUB_SHA}"
+
+            if git rev-parse -q --verify "refs/tags/${TAG}" >/dev/null; then
+              CHECKOUT_REF="refs/tags/${TAG}"
+            else
+              CHECKOUT_REF="${GITHUB_SHA}"
+            fi
+
+            if [[ "${{ github.event.inputs.is_prerelease }}" == "true" ]]; then
+              IS_PRERELEASE="true"
+            else
+              IS_PRERELEASE="false"
+            fi
           fi
+
           VERSION="${TAG#v}"
           IFS='.' read -r -a VERSION_PARTS <<< "${VERSION}"
           while [ "${#VERSION_PARTS[@]}" -lt 4 ]; do
             VERSION_PARTS+=("0")
           done
           ASSEMBLY_VERSION="${VERSION_PARTS[0]}.${VERSION_PARTS[1]}.${VERSION_PARTS[2]}.${VERSION_PARTS[3]}"
-          echo "tag=${TAG}" >> $GITHUB_OUTPUT
-          echo "version=${VERSION}" >> $GITHUB_OUTPUT
-          echo "assembly_version=${ASSEMBLY_VERSION}" >> $GITHUB_OUTPUT
-          echo "informational_version=${VERSION}" >> $GITHUB_OUTPUT
-          echo "checkout_ref=${CHECKOUT_REF}" >> $GITHUB_OUTPUT
+
+          if [[ "${IS_PRERELEASE}" == "true" ]]; then
+            RELEASE_CHANNEL="preview"
+          else
+            RELEASE_CHANNEL="stable"
+          fi
+
+          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+          echo "assembly_version=${ASSEMBLY_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "informational_version=${VERSION}" >> "$GITHUB_OUTPUT"
+          echo "checkout_ref=${CHECKOUT_REF}" >> "$GITHUB_OUTPUT"
+          echo "is_prerelease=${IS_PRERELEASE}" >> "$GITHUB_OUTPUT"
+          echo "release_channel=${RELEASE_CHANNEL}" >> "$GITHUB_OUTPUT"
 
   build-windows:
     needs: prepare
@@ -66,9 +96,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [x64, x86]
-    name: Build_Windows_${{ matrix.arch }}
-    
+        include:
+          - arch: x64
+            self_contained: true
+            suffix: ''
+          - arch: x86
+            self_contained: true
+            suffix: ''
+    name: Build_Windows_${{ matrix.arch }}${{ matrix.suffix }}
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -81,6 +117,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -93,91 +130,132 @@ jobs:
           -p:FileVersion=${{ needs.prepare.outputs.assembly_version }}
           -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
 
-      - name: Publish
+      - name: Publish Launcher (AOT)
         run: |
-          dotnet publish LanMountainDesktop/LanMountainDesktop.csproj `
+          $version = "${{ needs.prepare.outputs.version }}"
+          $arch = "${{ matrix.arch }}"
+          $launcherPublishDir = "publish/launcher-win-$arch"
+
+          dotnet publish LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj `
             -c Release `
-            -o ./publish/windows-${{ matrix.arch }} `
+            -o ./$launcherPublishDir `
             --self-contained `
-            -r win-${{ matrix.arch }} `
-            -p:PublishSingleFile=false `
-            -p:SelfContained=true `
+            -r win-$arch `
+            -p:PublishAot=true `
+            -p:PublishSingleFile=true `
+            -p:IncludeNativeLibrariesForSelfExtract=true `
+            -p:EnableCompressionInSingleFile=true `
             -p:DebugType=none `
             -p:DebugSymbols=false `
-            -p:PublishTrimmed=false `
-            -p:PublishReadyToRun=false `
             -p:Version=${{ needs.prepare.outputs.version }} `
             -p:AssemblyVersion=${{ needs.prepare.outputs.assembly_version }} `
             -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} `
             -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
+
+          if ($LASTEXITCODE -ne 0) {
+            Write-Error "Launcher AOT publish failed"
+            exit 1
+          }
         shell: pwsh
 
-      - name: Install Inno Setup
-        run: choco install innosetup -y --no-progress
+      - name: Publish Main App
+        run: |
+          $selfContained = "${{ matrix.self_contained }}" -eq "true"
+          $publishDir = if ($selfContained) { "publish/windows-${{ matrix.arch }}" } else { "publish/windows-${{ matrix.arch }}-lite" }
+
+          if ($selfContained) {
+            dotnet publish LanMountainDesktop/LanMountainDesktop.csproj `
+              -c Release `
+              -o ./$publishDir `
+              --self-contained `
+              -r win-${{ matrix.arch }} `
+              -p:PublishSingleFile=false `
+              -p:DebugType=none `
+              -p:DebugSymbols=false `
+              -p:PublishTrimmed=false `
+              -p:PublishReadyToRun=false `
+              -p:Version=${{ needs.prepare.outputs.version }} `
+              -p:AssemblyVersion=${{ needs.prepare.outputs.assembly_version }} `
+              -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} `
+              -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
+          } else {
+            dotnet publish LanMountainDesktop/LanMountainDesktop.csproj `
+              -c Release `
+              -o ./$publishDir `
+              --self-contained:false `
+              -p:PublishSingleFile=false `
+              -p:DebugType=none `
+              -p:DebugSymbols=false `
+              -p:PublishTrimmed=false `
+              -p:PublishReadyToRun=false `
+              -p:Version=${{ needs.prepare.outputs.version }} `
+              -p:AssemblyVersion=${{ needs.prepare.outputs.assembly_version }} `
+              -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} `
+              -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
+          }
+        shell: pwsh
+
+      - name: Restructure for Launcher
+        run: |
+          $version = "${{ needs.prepare.outputs.version }}"
+          $arch = "${{ matrix.arch }}"
+          $selfContained = "${{ matrix.self_contained }}" -eq "true"
+          $publishDir = if ($selfContained) { "publish/windows-$arch" } else { "publish/windows-$arch-lite" }
+          $launcherPublishDir = "publish/launcher-win-$arch"
+          $appDir = "app-$version"
+          $newStructure = "publish-launcher/windows-$arch"
+
+          New-Item -ItemType Directory -Path $newStructure -Force | Out-Null
+          $appPath = Join-Path $newStructure $appDir
+          Move-Item -Path $publishDir -Destination $appPath -Force
+
+          if (Test-Path $launcherPublishDir) {
+            Copy-Item -Path "$launcherPublishDir\*" -Destination $newStructure -Recurse -Force
+          }
+
+          New-Item -ItemType File -Path (Join-Path $appPath ".current") -Force | Out-Null
+
+          Remove-Item -Path $publishDir -Recurse -Force -ErrorAction SilentlyContinue
+          Remove-Item -Path $launcherPublishDir -Recurse -Force -ErrorAction SilentlyContinue
+          Move-Item -Path $newStructure -Destination $publishDir -Force
+        shell: pwsh
+
+      - name: Install Inno Setup and 7z
+        run: |
+          choco install innosetup -y --no-progress
+          choco install 7zip -y --no-progress
         shell: pwsh
 
       - name: Build Installer
         run: |
           $version = "${{ needs.prepare.outputs.version }}"
           $arch = "${{ matrix.arch }}"
-          $publishDir = "publish\windows-$arch"
-          $installerScript = "LanMountainDesktop\installer\LanMountainDesktop.iss"
+          $suffix = "${{ matrix.suffix }}"
+          $selfContained = "${{ matrix.self_contained }}" -eq "true"
+          $publishDir = if ($selfContained) { "publish/windows-$arch" } else { "publish/windows-$arch-lite" }
           $outputDir = "build-installer"
-          
-          # Verify source directory exists
-          if (-not (Test-Path -Path $publishDir)) {
-            Write-Error "Publish directory not found: $publishDir"
-            Get-ChildItem -Path "publish" -Directory -ErrorAction SilentlyContinue | Select-Object Name
-            exit 1
-          }
-          
-          # Create output directory
+          $installerScript = "LanMountainDesktop/installer/LanMountainDesktop.iss"
+
           New-Item -ItemType Directory -Path $outputDir -Force | Out-Null
-          
-          # Verify installer script exists
-          if (-not (Test-Path -Path $installerScript)) {
-            Write-Error "Installer script not found: $installerScript"
-            exit 1
-          }
-          
-          # Find Inno Setup compiler (choco may install a shim in PATH)
-          $isccPath = $null
-          $isccCommand = Get-Command ISCC.exe -ErrorAction SilentlyContinue
-          if ($isccCommand) {
-            $isccPath = $isccCommand.Source
-          }
 
           $candidatePaths = @(
-            "C:\Program Files (x86)\Inno Setup 6\ISCC.exe",
-            "C:\Program Files\Inno Setup 6\ISCC.exe",
-            "$env:ChocolateyInstall\bin\ISCC.exe",
+            (Get-Command iscc.exe -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Source -ErrorAction SilentlyContinue),
+            "$env:ProgramFiles(x86)\Inno Setup 6\ISCC.exe",
+            "$env:ProgramFiles\Inno Setup 6\ISCC.exe",
             "$env:ChocolateyInstall\lib\innosetup\tools\ISCC.exe"
-          )
+          ) | Where-Object { $_ -and (Test-Path $_) }
 
+          $isccPath = $candidatePaths | Select-Object -First 1
           if (-not $isccPath) {
-            foreach ($candidate in $candidatePaths) {
-              if ($candidate -and (Test-Path -Path $candidate)) {
-                $isccPath = $candidate
-                break
-              }
-            }
-          }
-
-          if (-not $isccPath) {
-            Write-Host "ISCC.exe was not found in PATH or known locations."
-            Write-Host "Checked locations:"
-            $candidatePaths | ForEach-Object { Write-Host " - $_" }
-            Write-Host "Chocolatey bin listing (if exists):"
-            Get-ChildItem "$env:ChocolateyInstall\bin" -Filter "*iscc*" -ErrorAction SilentlyContinue | Select-Object FullName
             Write-Error "Inno Setup compiler not found."
             exit 1
           }
-          
-          Write-Host "Found Inno Setup at: $isccPath"
-          
-          # Build installer with iscc.exe
-          Write-Host "Building installer for Windows $arch with version $version..."
-          
+
+          if (-not (Test-Path $installerScript)) {
+            Write-Error "Installer script not found: $(Join-Path $PWD $installerScript)"
+            exit 1
+          }
+
           $publishDir = (Resolve-Path $publishDir).Path
           $outputDir = (Resolve-Path $outputDir).Path
           $installerScript = (Resolve-Path $installerScript).Path
@@ -187,34 +265,69 @@ jobs:
             "/DPublishDir=$publishDir",
             "/DMyOutputDir=$outputDir",
             "/DMyAppArch=$arch",
+            "/DMyAppSuffix=$suffix",
+            "/DIsSelfContained=$selfContained",
             $installerScript
           )
-          
-          Write-Host "Compile command: `"$isccPath`" $($compileArgs -join ' ')"
-          
-          # Execute the compiler
+
           & $isccPath @compileArgs
           if ($LASTEXITCODE -ne 0) {
             Write-Error "Inno Setup compiler exited with code $LASTEXITCODE"
             exit 1
           }
-          
-          # Check if build was successful
+
           $installerFile = Get-ChildItem -Path $outputDir -Filter "*.exe" -ErrorAction SilentlyContinue | Select-Object -First 1
           if (-not $installerFile) {
             Write-Error "Failed to create installer"
             exit 1
           }
-          
-          Write-Host "✅ Successfully created: $($installerFile.Name)"
-          Write-Host "Installer size: $([Math]::Round($installerFile.Length / 1MB, 2)) MB"
         shell: pwsh
 
-      - name: Upload Installer
+      - name: Package Payload Zip
+        run: |
+          $version = "${{ needs.prepare.outputs.version }}"
+          $arch = "${{ matrix.arch }}"
+          $payloadRoot = Join-Path (Join-Path $PWD "publish/windows-$arch") "app-$version"
+          if (-not (Test-Path $payloadRoot)) {
+            Write-Error "Payload root not found: $payloadRoot"
+            exit 1
+          }
+
+          $stageDir = Join-Path $PWD "payload-stage/windows-$arch"
+          $releaseDir = Join-Path $PWD "release-assets"
+          Remove-Item -Path $stageDir -Recurse -Force -ErrorAction SilentlyContinue
+          New-Item -ItemType Directory -Path $stageDir -Force | Out-Null
+          New-Item -ItemType Directory -Path $releaseDir -Force | Out-Null
+
+          Get-ChildItem -Path $payloadRoot -Recurse -File | ForEach-Object {
+            $relative = [System.IO.Path]::GetRelativePath($payloadRoot, $_.FullName).Replace('\', '/')
+            if ($relative -eq '.current' -or $relative -eq '.partial' -or $relative -eq '.destroy' -or $relative.StartsWith('.current/') -or $relative.StartsWith('.partial/') -or $relative.StartsWith('.destroy/')) {
+              return
+            }
+
+            $destination = Join-Path $stageDir ($relative -replace '/', [System.IO.Path]::DirectorySeparatorChar)
+            $destinationDir = Split-Path -Path $destination -Parent
+            if (-not [string]::IsNullOrWhiteSpace($destinationDir)) {
+              New-Item -ItemType Directory -Path $destinationDir -Force | Out-Null
+            }
+
+            Copy-Item -Path $_.FullName -Destination $destination -Force
+          }
+
+          $payloadZip = Join-Path $releaseDir "files-windows-$arch.zip"
+          if (Test-Path $payloadZip) {
+            Remove-Item $payloadZip -Force
+          }
+          Compress-Archive -Path (Join-Path $stageDir '*') -DestinationPath $payloadZip -Force
+        shell: pwsh
+
+      - name: Upload Release Assets
         uses: actions/upload-artifact@v4
         with:
           name: release-windows-${{ matrix.arch }}
-          path: build-installer/*.exe
+          path: |
+            release-assets/files-windows-${{ matrix.arch }}.zip
+            build-installer/*.exe
           if-no-files-found: error
           retention-days: 30
 
@@ -222,7 +335,7 @@ jobs:
     needs: prepare
     runs-on: ubuntu-latest
     name: Build_Linux
-    
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -238,12 +351,18 @@ jobs:
             libfontconfig1 libfreetype6 \
             libx11-6 libxrandr2 libxinerama1 \
             libxi6 libxcursor1 libxext6 \
-            libxrender1 libxkbcommon-x11-0
+            libxrender1 libxkbcommon-x11-0 \
+            clang zlib1g-dev zip rsync
+
+          sudo apt-get install -y libasound2t64 || sudo apt-get install -y libasound2
+          sudo apt-get install -y libportaudio2t64 || sudo apt-get install -y libportaudio2
+          sudo apt-get install -y libwebkit2gtk-4.1-dev || sudo apt-get install -y libwebkit2gtk-4.0-dev
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -256,11 +375,29 @@ jobs:
           -p:FileVersion=${{ needs.prepare.outputs.assembly_version }}
           -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
 
-      - name: Publish
+      - name: Publish Launcher (AOT)
+        run: |
+          dotnet publish LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj \
+            -c Release \
+            -o ./publish/launcher-linux-x64 \
+            --self-contained \
+            -r linux-x64 \
+            -p:PublishAot=true \
+            -p:PublishSingleFile=true \
+            -p:IncludeNativeLibrariesForSelfExtract=true \
+            -p:EnableCompressionInSingleFile=true \
+            -p:DebugType=none \
+            -p:DebugSymbols=false \
+            -p:Version=${{ needs.prepare.outputs.version }} \
+            -p:AssemblyVersion=${{ needs.prepare.outputs.assembly_version }} \
+            -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} \
+            -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
+
+      - name: Publish Main App
         run: |
           dotnet publish LanMountainDesktop/LanMountainDesktop.csproj \
             -c Release \
-            -o ./publish/linux-x64 \
+            -o ./publish/linux-x64-app \
             --self-contained \
             -r linux-x64 \
             -p:PublishSingleFile=false \
@@ -274,6 +411,24 @@ jobs:
             -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} \
             -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
 
+      - name: Restructure for Launcher
+        run: |
+          version="${{ needs.prepare.outputs.version }}"
+          publishDir="publish/linux-x64"
+          appDir="app-$version"
+          launcherDir="publish/launcher-linux-x64"
+
+          mkdir -p "$publishDir"
+          mv "publish/linux-x64-app" "$publishDir/$appDir"
+
+          if [ -d "$launcherDir" ]; then
+            cp -r "$launcherDir"/* "$publishDir/"
+            chmod +x "$publishDir/LanMountainDesktop.Launcher" 2>/dev/null || true
+          fi
+
+          touch "$publishDir/$appDir/.current"
+          rm -rf "$launcherDir"
+
       - name: Package as DEB
         run: |
           version="${{ needs.prepare.outputs.version }}"
@@ -283,41 +438,17 @@ jobs:
           arch="amd64"
           desktop_template="LanMountainDesktop/packaging/linux/LanMountainDesktop.desktop"
           icon_source="LanMountainDesktop/packaging/linux/lanmountaindesktop.png"
-          
-          # Verify source directory exists
-          if [ ! -d "$source" ]; then
-            echo "Error: Source directory not found: $source"
-            ls -la publish/ || echo "publish directory not found"
-            exit 1
-          fi
-          
-          # Create DEB package structure
+
           mkdir -p "build-deb/DEBIAN"
           mkdir -p "build-deb/usr/local/bin"
           mkdir -p "build-deb/usr/share/applications"
           mkdir -p "build-deb/usr/share/pixmaps"
           mkdir -p "build-deb/usr/share/icons/hicolor/256x256/apps"
-          
-          # Copy application files
-          cp -r "$source"/* "build-deb/usr/local/bin/"
-          
-          # Verify copy was successful
-          item_count=$(find build-deb/usr/local/bin -type f 2>/dev/null | wc -l)
-          echo "DEB package contains $item_count files"
-          
-          if [ "$item_count" -eq 0 ]; then
-            echo "Error: DEB package is empty after copy"
-            exit 1
-          fi
 
-          if [ ! -f "$desktop_template" ] || [ ! -f "$icon_source" ]; then
-            echo "Error: Linux desktop resources are missing"
-            ls -la "LanMountainDesktop/packaging/linux" || true
-            exit 1
-          fi
+          cp -r "$source"/* "build-deb/usr/local/bin/"
 
           sed \
-            -e "s|@@EXEC@@|/usr/local/bin/LanMountainDesktop|g" \
+            -e "s|@@EXEC@@|/usr/local/bin/LanMountainDesktop.Launcher|g" \
             -e "s|@@ICON@@|lanmountaindesktop|g" \
             "$desktop_template" > "build-deb/usr/share/applications/LanMountainDesktop.desktop"
 
@@ -334,49 +465,69 @@ jobs:
             printf '%s\n' '  gtk-update-icon-cache /usr/share/icons/hicolor >/dev/null 2>&1 || true'
             printf '%s\n' 'fi'
           } > "build-deb/DEBIAN/postinst"
-          
-          # Create control file (NOTE: No leading spaces in control file)
+
           {
             printf '%s\n' "Package: $package_name"
             printf '%s\n' "Version: $package_version"
             printf '%s\n' "Architecture: $arch"
-            printf '%s\n' "Maintainer: LanMountain Team <dev@example.com>"
-            printf '%s\n' "Description: LanMountain Desktop Application"
-            printf '%s\n' " A desktop application for LanMountain."
+            printf '%s\n' 'Maintainer: LanMountain Team <dev@example.com>'
+            printf '%s\n' 'Description: LanMountain Desktop Application'
+            printf '%s\n' ' A desktop application for LanMountain.'
           } > "build-deb/DEBIAN/control"
-          
-          # Set proper permissions
-          chmod 755 "build-deb/usr/local/bin/LanMountainDesktop" || chmod 755 "build-deb/usr/local/bin"/*
+
+          chmod 755 "build-deb/usr/local/bin/LanMountainDesktop.Launcher" 2>/dev/null || chmod 755 "build-deb/usr/local/bin"/*
           chmod 644 "build-deb/usr/share/applications/LanMountainDesktop.desktop"
           chmod 644 "build-deb/usr/share/pixmaps/lanmountaindesktop.png"
           chmod 644 "build-deb/usr/share/icons/hicolor/256x256/apps/lanmountaindesktop.png"
           chmod 755 "build-deb/DEBIAN/postinst"
-          
-          # Create DEB file
-          if dpkg-deb --build "build-deb" "${package_name}_${package_version}_${arch}.deb"; then
-            echo "Successfully created: ${package_name}_${package_version}_${arch}.deb"
-            ls -lh "${package_name}_${package_version}_${arch}.deb"
-          else
-            echo "Error: Failed to build DEB package"
+
+          dpkg-deb --build "build-deb" "${package_name}_${package_version}_${arch}.deb"
+
+      - name: Package Payload Zip
+        run: |
+          version="${{ needs.prepare.outputs.version }}"
+          payload_root="publish/linux-x64/app-$version"
+          release_dir="$PWD/release-assets"
+          stage_dir="$PWD/payload-stage/linux-x64"
+
+          if [ ! -d "$payload_root" ]; then
+            echo "Payload root not found: $payload_root"
             exit 1
           fi
 
-      - name: Upload
+          rm -rf "$stage_dir"
+          mkdir -p "$stage_dir" "$release_dir"
+          rsync -a \
+            --exclude '.current' \
+            --exclude '.partial' \
+            --exclude '.destroy' \
+            "$payload_root/" "$stage_dir/"
+
+          (
+            cd "$stage_dir"
+            zip -qr "$release_dir/files-linux-x64.zip" .
+          )
+
+      - name: Upload Release Assets
         uses: actions/upload-artifact@v4
         with:
-          name: release-linux
-          path: "*.deb"
+          name: release-linux-x64
+          path: |
+            release-assets/files-linux-x64.zip
+            *.deb
           if-no-files-found: error
           retention-days: 30
 
   build-macos:
     needs: prepare
     runs-on: macos-latest
+    continue-on-error: true
     strategy:
+      fail-fast: false
       matrix:
         arch: [x64, arm64]
     name: Build_macOS_${{ matrix.arch }}
-    
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -385,10 +536,14 @@ jobs:
           submodules: recursive
           ref: ${{ needs.prepare.outputs.checkout_ref }}
 
+      - name: Install dependencies
+        run: brew install portaudio
+
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
+          dotnet-quality: 'preview'
 
       - name: Restore
         run: dotnet restore ${{ env.Solution_Name }}
@@ -401,11 +556,29 @@ jobs:
           -p:FileVersion=${{ needs.prepare.outputs.assembly_version }}
           -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
 
-      - name: Publish
+      - name: Publish Launcher (AOT)
+        run: |
+          dotnet publish LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj \
+            -c Release \
+            -o ./publish/launcher-macos-${{ matrix.arch }} \
+            --self-contained \
+            -r osx-${{ matrix.arch }} \
+            -p:PublishAot=true \
+            -p:PublishSingleFile=true \
+            -p:IncludeNativeLibrariesForSelfExtract=true \
+            -p:EnableCompressionInSingleFile=true \
+            -p:DebugType=none \
+            -p:DebugSymbols=false \
+            -p:Version=${{ needs.prepare.outputs.version }} \
+            -p:AssemblyVersion=${{ needs.prepare.outputs.assembly_version }} \
+            -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} \
+            -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
+
+      - name: Publish Main App
         run: |
           dotnet publish LanMountainDesktop/LanMountainDesktop.csproj \
             -c Release \
-            -o ./publish/macos-${{ matrix.arch }} \
+            -o ./publish/macos-${{ matrix.arch }}-app \
             --self-contained \
             -r osx-${{ matrix.arch }} \
             -p:PublishSingleFile=false \
@@ -419,45 +592,50 @@ jobs:
             -p:FileVersion=${{ needs.prepare.outputs.assembly_version }} \
             -p:InformationalVersion=${{ needs.prepare.outputs.informational_version }}
 
-      - name: Package as DMG
+      - name: Package Payload Zip
+        run: |
+          release_dir="$PWD/release-assets"
+          stage_dir="$PWD/payload-stage/macos-${{ matrix.arch }}"
+          payload_root="publish/macos-${{ matrix.arch }}-app"
+
+          rm -rf "$stage_dir"
+          mkdir -p "$stage_dir" "$release_dir"
+          rsync -a "$payload_root/" "$stage_dir/"
+          (
+            cd "$stage_dir"
+            zip -qr "$release_dir/files-macos-${{ matrix.arch }}.zip" .
+          )
+
+      - name: Restructure and Package as DMG
+        continue-on-error: true
         run: |
           version="${{ needs.prepare.outputs.version }}"
           arch="${{ matrix.arch }}"
-          source="publish/macos-$arch"
           app_name="LanMountainDesktop"
           package_name="${app_name}-${version}-macos-${arch}"
-          
-          # Verify source directory exists
-          if [ ! -d "$source" ]; then
-            echo "Error: Source directory not found: $source"
-            ls -la publish/ || echo "publish directory not found"
-            exit 1
-          fi
-          
-          # Create app bundle structure
+          launcherDir="publish/launcher-macos-$arch"
+          appSourceDir="publish/macos-$arch-app"
+
           mkdir -p "${app_name}.app/Contents/MacOS"
-          mkdir -p "${app_name}.app/Contents/Resources"
-          
-          # Copy application files
-          cp -r "$source"/* "${app_name}.app/Contents/MacOS/"
-          
-          # Verify copy was successful
-          item_count=$(find "${app_name}.app/Contents/MacOS" -type f | wc -l)
-          echo "App bundle contains $item_count files"
-          
-          if [ "$item_count" -eq 0 ]; then
-            echo "Error: App bundle is empty after copy"
-            exit 1
+          appDir="app-$version"
+          mkdir -p "${app_name}.app/Contents/MacOS/$appDir"
+
+          cp -r "$appSourceDir"/* "${app_name}.app/Contents/MacOS/$appDir/"
+          if [ -d "$launcherDir" ]; then
+            cp -r "$launcherDir"/* "${app_name}.app/Contents/MacOS/"
+            chmod +x "${app_name}.app/Contents/MacOS/LanMountainDesktop.Launcher" 2>/dev/null || true
           fi
 
-          # Create Info.plist
+          touch "${app_name}.app/Contents/MacOS/$appDir/.current"
+          mkdir -p "${app_name}.app/Contents/Resources"
+
           {
             printf '%s\n' '<?xml version="1.0" encoding="UTF-8"?>'
             printf '%s\n' '<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">'
             printf '%s\n' '<plist version="1.0">'
             printf '%s\n' '<dict>'
             printf '%s\n' '  <key>CFBundleExecutable</key>'
-            printf '%s\n' '  <string>LanMountainDesktop</string>'
+            printf '%s\n' '  <string>LanMountainDesktop.Launcher</string>'
             printf '%s\n' '  <key>CFBundleName</key>'
             printf '%s\n' '  <string>LanMountain Desktop</string>'
             printf '%s\n' '  <key>CFBundleVersion</key>'
@@ -471,96 +649,99 @@ jobs:
             printf '%s\n' '</dict>'
             printf '%s\n' '</plist>'
           } > "${app_name}.app/Contents/Info.plist"
-          
-          # Create DMG
+
           mkdir -p dmg-temp
           cp -r "${app_name}.app" dmg-temp/
-          
-          if hdiutil create -volname "${app_name}" -srcfolder dmg-temp -ov -format UDZO "${package_name}.dmg" 2>&1; then
-            echo "Successfully created: ${package_name}.dmg"
-            ls -lh "${package_name}.dmg"
-          else
-            echo "Error: Failed to create DMG"
-            exit 1
-          fi
-          
-          # Cleanup
-          rm -rf dmg-temp "${app_name}.app"
+          hdiutil create -volname "${app_name}" -srcfolder dmg-temp -ov -format UDZO "${package_name}.dmg"
 
-      - name: Upload
+      - name: Upload Release Assets
+        if: always()
         uses: actions/upload-artifact@v4
         with:
           name: release-macos-${{ matrix.arch }}
-          path: "*.dmg"
-          if-no-files-found: error
+          path: |
+            release-assets/files-macos-${{ matrix.arch }}.zip
+            *.dmg
+          if-no-files-found: ignore
           retention-days: 30
 
   github-release:
-    needs: [ prepare, build-windows, build-linux, build-macos ]
+    needs: [prepare, build-windows, build-linux]
     runs-on: ubuntu-latest
     permissions:
       contents: write
-    
+
     steps:
-      - name: Download artifacts
+      - name: Download release artifacts
         uses: actions/download-artifact@v4
         with:
-          path: artifacts
+          path: release-files
           pattern: release-*
+          merge-multiple: true
 
-      - name: List artifacts structure
+      - name: Normalize release files
         run: |
-          echo "🔍 Artifact directory structure:"
-          find artifacts -type f -o -type d | sort
-          echo ""
-          echo "📊 Files found:"
-          find artifacts -type f -exec ls -lh {} \;
-          echo ""
-          echo "📁 Full tree:"
-          tree artifacts || find artifacts -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'
+          mkdir -p release-bundle
 
-      - name: Flatten artifacts for release
-        run: |
-          echo "📦 Organizing artifacts..."
-          mkdir -p release-files
-          find artifacts -type f \( -name "*.exe" -o -name "*.deb" -o -name "*.dmg" \) -exec cp -v {} release-files/ \;
-          echo ""
-          echo "✅ Files ready for release:"
-          ls -lh release-files/ || echo "⚠️ No files found in release-files"
-          echo ""
-          echo "📋 Total files:"
-          file_count=$(find release-files -type f | wc -l)
-          echo "$file_count"
-          if [ "$file_count" -eq 0 ]; then
-            echo "Error: No installer/package files found for release"
+          mapfile -t downloaded_files < <(find release-files -type f)
+          if [ "${#downloaded_files[@]}" -eq 0 ]; then
+            echo "No downloaded release artifacts were found."
             exit 1
           fi
 
-      - name: Create Release
+          for file in "${downloaded_files[@]}"; do
+            base_name="$(basename "$file")"
+            target_path="release-bundle/$base_name"
+
+            if [ -e "$target_path" ]; then
+              echo "Duplicate release asset name detected: $base_name"
+              echo "Conflicting file: $file"
+              exit 1
+            fi
+
+            cp "$file" "$target_path"
+          done
+
+      - name: Validate release files
+        run: |
+          echo "Release files:"
+          find release-bundle -maxdepth 1 -type f -exec ls -lh {} \;
+
+          if [ ! -f release-bundle/files-windows-x64.zip ] || [ ! -f release-bundle/files-windows-x86.zip ] || [ ! -f release-bundle/files-linux-x64.zip ]; then
+            echo "Required payload zips are missing."
+            exit 1
+          fi
+
+          file_count=$(find release-bundle -maxdepth 1 -type f | wc -l)
+          if [ "$file_count" -eq 0 ]; then
+            echo "No release files were produced."
+            exit 1
+          fi
+
+      - name: Create or Update Release
         uses: ncipollo/release-action@v1
         with:
           tag: ${{ needs.prepare.outputs.tag }}
           name: ${{ needs.prepare.outputs.tag }}
-          commit: ${{ github.sha }}
           allowUpdates: true
           draft: false
-          prerelease: ${{ github.event.inputs.is_prerelease == 'true' }}
-          artifacts: "release-files/**"
+          prerelease: ${{ needs.prepare.outputs.is_prerelease == 'true' }}
+          artifacts: 'release-bundle/*'
           body: |
             ## Release ${{ needs.prepare.outputs.version }}
-            
-            ### Windows
-            - **LanMountainDesktop-Setup-{version}-x64.exe** - 64-bit installer
-            - **LanMountainDesktop-Setup-{version}-x86.exe** - 32-bit installer
-            
-            Installation: Double-click the .exe file and follow the wizard.
-            
-            ### Linux
-            - **LanMountainDesktop-{version}-linux-x64.deb** - Debian package (x64)
-            
+
+            ### Installers
+            - `LanMountainDesktop-Setup-${{ needs.prepare.outputs.version }}-x64.exe`
+            - `LanMountainDesktop-Setup-${{ needs.prepare.outputs.version }}-x86.exe`
+            - `LanMountainDesktop_${{ needs.prepare.outputs.version }}_amd64.deb`
+
+            ### Payload Archives
+            - `files-windows-x64.zip`
+            - `files-windows-x86.zip`
+            - `files-linux-x64.zip`
+
             ### macOS
-            - **LanMountainDesktop-{version}-macos-x64.dmg** - Intel processor
-            - **LanMountainDesktop-{version}-macos-arm64.dmg** - Apple Silicon (M1/M2/M3)
-            
-            See commits for changes.
+            - macOS assets are best-effort and will not block the release.
+
+            Release keeps only the stable installer and payload outputs. PLONDS delta assets and external mirror metadata are generated by follow-up workflows.
           token: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -512,3 +512,5 @@ nul
 /*.deb
 /*.dmg
 /*.AppImage
+/velopack-output-local-verify
+/velopack-output-local

.trae/documents/launcher_comprehensive_improvement_plan.md

@@ -0,0 +1,805 @@
+# LanMountainDesktop Launcher 全面改进计划
+
+## 概述
+
+本计划旨在将 LanMountainDesktop 的 Launcher 改进为符合原子化架构的独立启动器，参考 ClassIsland 的极简设计，同时保留阑山桌面的特色功能。
+
+## 目标
+
+1. **P0 (必须完成)**: 重写 Launcher 为极简模式，移除与主程序的耦合
+2. **P1 (应该完成)**: 将 OOBE、Splash、更新、插件管理迁移到主程序
+3. **P2 (推荐完成)**: 实现 Launcher 自更新机制
+4. **P3 (可选优化)**: 性能优化和代码清理
+5. **P4 (长期规划)**: 增强功能和可扩展性
+
+## 当前问题
+
+1. Launcher 是 Avalonia 应用，启动慢、内存占用高
+2. Launcher 引用了 PluginSdk，与主程序有耦合
+3. 主程序引用了 Launcher，构建关系复杂
+4. Launcher 职责过多（OOBE + Splash + 更新 + 插件 + 启动）
+5. 缺少 Launcher 自更新机制
+6. GitHub Actions 工作流需要适配新的目录结构
+
+## 改进后架构
+
+```
+安装根目录/
+├── LanMountainDesktop.exe              ← 启动器（唯一入口，极简，~100行代码）
+├── app-1.0.0/                          ← 版本目录
+│   ├── .current                        ← 当前版本标记
+│   ├── LanMountainDesktop.exe          ← 主程序
+│   └── ... (所有依赖)
+└── .launcher/                          ← 启动器数据（可选）
+    └── snapshots/                      ← 版本快照
+```
+
+## 详细实施步骤
+
+### P0: 基础架构重构
+
+#### 1. 重写 Launcher 为极简模式
+
+**文件**: `LanMountainDesktop.Launcher/Program.cs`
+
+**目标**: 
+- 代码量控制在 100 行以内
+- 零外部依赖（不使用 Avalonia）
+- 只负责：版本选择、启动主程序、清理旧版本
+
+**完整实现代码**:
+
+```csharp
+// LanMountainDesktop.Launcher/Program.cs
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace LanMountainDesktop.Launcher;
+
+internal static class Program
+{
+    private const string HostExecutableName = "LanMountainDesktop.exe";
+    private const string HostExecutableNameLinux = "LanMountainDesktop";
+    
+    [STAThread]
+    private static int Main(string[] args)
+    {
+        var rootDir = GetRootDirectory();
+        
+        // 1. 查找最佳版本
+        var installation = FindBestVersion(rootDir);
+        if (installation == null)
+        {
+            ShowError("找不到有效的 LanMountainDesktop 版本，请重新安装。");
+            return 1;
+        }
+        
+        // 2. 清理旧版本（异步，不阻塞）
+        _ = Task.Run(() => CleanupOldVersions(rootDir));
+        
+        // 3. 启动主程序
+        return LaunchHost(installation, args);
+    }
+    
+    private static string GetRootDirectory()
+    {
+        return Path.GetFullPath(
+            Path.GetDirectoryName(Environment.ProcessPath) ?? "");
+    }
+    
+    private static string? FindBestVersion(string rootDir)
+    {
+        var exeName = OperatingSystem.IsWindows() 
+            ? HostExecutableName 
+            : HostExecutableNameLinux;
+            
+        return Directory.GetDirectories(rootDir)
+            .Where(x => IsValidVersionDirectory(x, exeName))
+            .OrderBy(x => File.Exists(Path.Combine(x, ".current")) ? 0 : 1)
+            .ThenByDescending(x => ParseVersion(Path.GetFileName(x)))
+            .FirstOrDefault();
+    }
+    
+    private static bool IsValidVersionDirectory(string path, string exeName)
+    {
+        var dirName = Path.GetFileName(path);
+        return dirName.StartsWith("app-") &&
+               !File.Exists(Path.Combine(path, ".destroy")) &&
+               !File.Exists(Path.Combine(path, ".partial")) &&
+               File.Exists(Path.Combine(path, exeName));
+    }
+    
+    private static Version ParseVersion(string dirName)
+    {
+        // app-1.0.0 or app-1.0.0-123
+        var parts = dirName.Split('-');
+        if (parts.Length >= 2 && Version.TryParse(parts[1], out var v))
+            return v;
+        return new Version(0, 0);
+    }
+    
+    private static void CleanupOldVersions(string rootDir)
+    {
+        try
+        {
+            var oldVersions = Directory.GetDirectories(rootDir)
+                .Where(x => File.Exists(Path.Combine(x, ".destroy")));
+            
+            foreach (var dir in oldVersions)
+            {
+                try { Directory.Delete(dir, recursive: true); } catch { }
+            }
+        }
+        catch { /* 忽略清理失败 */ }
+    }
+    
+    private static int LaunchHost(string installation, string[] args)
+    {
+        var exeName = OperatingSystem.IsWindows() 
+            ? HostExecutableName 
+            : HostExecutableNameLinux;
+        var exePath = Path.Combine(installation, exeName);
+        
+        // Linux/macOS: 确保可执行权限
+        if (!OperatingSystem.IsWindows())
+        {
+            EnsureExecutable(exePath);
+        }
+        
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = exePath,
+            WorkingDirectory = Path.GetDirectoryName(installation),
+            UseShellExecute = true
+        };
+        
+        foreach (var arg in args)
+            startInfo.ArgumentList.Add(arg);
+        
+        // 传递环境变量
+        startInfo.EnvironmentVariables["LMD_PACKAGE_ROOT"] = 
+            Path.GetDirectoryName(installation);
+        startInfo.EnvironmentVariables["LMD_VERSION"] = 
+            Path.GetFileName(installation).Replace("app-", "");
+        
+        try
+        {
+            Process.Start(startInfo);
+            return 0;
+        }
+        catch (Exception ex)
+        {
+            ShowError($"启动失败: {ex.Message}");
+            return 1;
+        }
+    }
+    
+    private static void EnsureExecutable(string path)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "chmod",
+                Arguments = $"+x \"{path}\"",
+                CreateNoWindow = true
+            })?.WaitForExit();
+        }
+        catch { }
+    }
+    
+    private static void ShowError(string message)
+    {
+        if (OperatingSystem.IsWindows())
+        {
+            // Win32 MessageBox
+            try
+            {
+                MessageBox(IntPtr.Zero, message, "LanMountainDesktop", 0x10);
+            }
+            catch 
+            { 
+                Console.Error.WriteLine(message);
+            }
+        }
+        else
+        {
+            Console.Error.WriteLine(message);
+        }
+    }
+    
+    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
+    private static extern int MessageBox(IntPtr hWnd, string text, string caption, uint type);
+}
+```
+
+#### 2. 修改 Launcher 项目文件
+
+**文件**: `LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj`
+
+**完整内容**:
+
+```xml
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Version>1.0.0</Version>
+    <ApplicationIcon>Assets\logo_nightly.ico</ApplicationIcon>
+  </PropertyGroup>
+  
+  <!-- 图标资源 -->
+  <ItemGroup>
+    <Content Include="..\LanMountainDesktop\Assets\logo_nightly.ico" Link="Assets\logo_nightly.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+</Project>
+```
+
+#### 3. 移除主程序对 Launcher 的引用
+
+**文件**: `LanMountainDesktop/LanMountainDesktop.csproj`
+
+**修改**: 删除以下行
+```xml
+<!-- 删除这一行 -->
+<ProjectReference Include="..\LanMountainDesktop.Launcher\LanMountainDesktop.Launcher.csproj" ReferenceOutputAssembly="false" />
+```
+
+#### 4. 修改主程序支持新架构
+
+**文件**: `LanMountainDesktop/Program.cs`
+
+**修改**: 添加环境变量读取
+
+```csharp
+// 在 Program.cs 中添加
+internal static class LaunchContext
+{
+    public static string? PackageRoot => 
+        Environment.GetEnvironmentVariable("LMD_PACKAGE_ROOT");
+    public static string? Version => 
+        Environment.GetEnvironmentVariable("LMD_VERSION");
+    public static bool IsLaunchedByLauncher => 
+        !string.IsNullOrEmpty(PackageRoot);
+}
+```
+
+---
+
+### P1: 功能迁移
+
+#### 5. 将 OOBE 迁移到主程序
+
+**新建文件**: `LanMountainDesktop/Services/Oobe/OobeService.cs`
+
+```csharp
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Services.Settings;
+
+namespace LanMountainDesktop.Services.Oobe;
+
+public class OobeService
+{
+    private readonly string _oobeStatePath;
+    
+    public OobeService()
+    {
+        var appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+        _oobeStatePath = Path.Combine(appData, "LanMountainDesktop", ".oobe_completed");
+    }
+    
+    public bool IsFirstRun()
+    {
+        return !File.Exists(_oobeStatePath);
+    }
+    
+    public void MarkCompleted()
+    {
+        var dir = Path.GetDirectoryName(_oobeStatePath);
+        if (!Directory.Exists(dir))
+            Directory.CreateDirectory(dir);
+        File.WriteAllText(_oobeStatePath, DateTime.UtcNow.ToString("O"));
+    }
+}
+```
+
+**新建文件**: `LanMountainDesktop/Views/Oobe/OobeWindow.axaml`
+
+```xml
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="LanMountainDesktop.Views.Oobe.OobeWindow"
+        Title="欢迎使用阑山桌面"
+        Width="800"
+        Height="600"
+        WindowStartupLocation="CenterScreen">
+  <Grid>
+    <!-- OOBE 界面内容 -->
+    <TextBlock Text="欢迎使用阑山桌面" FontSize="24" HorizontalAlignment="Center" Margin="0,50,0,0"/>
+    <Button Content="开始使用" HorizontalAlignment="Center" VerticalAlignment="Bottom" Margin="0,0,0,50" Click="OnStartClick"/>
+  </Grid>
+</Window>
+```
+
+**修改文件**: `LanMountainDesktop/App.axaml.cs`
+
+```csharp
+// 在 OnFrameworkInitializationCompleted 中添加
+private async Task InitializeOobeAsync()
+{
+    var oobeService = new OobeService();
+    if (oobeService.IsFirstRun())
+    {
+        var oobeWindow = new Views.Oobe.OobeWindow();
+        await oobeWindow.ShowDialog();
+        oobeService.MarkCompleted();
+    }
+}
+```
+
+#### 6. 将 Splash 迁移到主程序
+
+**新建文件**: `LanMountainDesktop/Views/Splash/SplashWindow.axaml`
+
+```xml
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="LanMountainDesktop.Views.Splash.SplashWindow"
+        Title="阑山桌面"
+        Width="400"
+        Height="300"
+        WindowStartupLocation="CenterScreen"
+        ShowInTaskbar="False"
+        SystemDecorations="None">
+  <Grid Background="{DynamicResource SystemAccentColor}">
+    <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">
+      <Image Source="/Assets/logo_nightly.png" Width="100" Height="100"/>
+      <TextBlock Text="阑山桌面" FontSize="20" Margin="0,20,0,0" HorizontalAlignment="Center"/>
+      <TextBlock x:Name="StatusText" Text="正在启动..." Margin="0,10,0,0" HorizontalAlignment="Center"/>
+    </StackPanel>
+  </Grid>
+</Window>
+```
+
+**修改文件**: `LanMountainDesktop/App.axaml.cs`
+
+```csharp
+// 在初始化时显示 Splash
+private SplashWindow? _splashWindow;
+
+private void ShowSplash()
+{
+    _splashWindow = new SplashWindow();
+    _splashWindow.Show();
+}
+
+private void CloseSplash()
+{
+    _splashWindow?.Close();
+    _splashWindow = null;
+}
+```
+
+#### 7. 将更新逻辑迁移到主程序
+
+**新建目录**: `LanMountainDesktop/Services/Update/`
+
+**新建文件**: `LanMountainDesktop/Services/Update/UpdateService.cs`
+
+```csharp
+using System.Net.Http.Json;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Services.Update;
+
+public class UpdateService
+{
+    private readonly HttpClient _httpClient;
+    private readonly string _currentVersion;
+    
+    public UpdateService()
+    {
+        _httpClient = new HttpClient();
+        _httpClient.DefaultRequestHeaders.Add("User-Agent", "LanMountainDesktop");
+        _currentVersion = GetType().Assembly.GetName().Version?.ToString() ?? "1.0.0";
+    }
+    
+    public async Task<UpdateCheckResult> CheckForUpdateAsync(UpdateChannel channel)
+    {
+        // 调用 GitHub Release API
+        var releases = await _httpClient.GetFromJsonAsync<List<GitHubRelease>>(
+            "https://api.github.com/repos/ClassIsland/LanMountainDesktop/releases");
+        
+        var latest = channel == UpdateChannel.Stable
+            ? releases?.FirstOrDefault(r => !r.Prerelease)
+            : releases?.FirstOrDefault();
+            
+        if (latest == null)
+            return new UpdateCheckResult { HasUpdate = false };
+            
+        var latestVersion = latest.TagName.TrimStart('v');
+        var hasUpdate = new Version(latestVersion) > new Version(_currentVersion);
+        
+        return new UpdateCheckResult
+        {
+            HasUpdate = hasUpdate,
+            Version = latestVersion,
+            DownloadUrl = latest.Assets.FirstOrDefault()?.BrowserDownloadUrl
+        };
+    }
+}
+
+public class UpdateCheckResult
+{
+    public bool HasUpdate { get; set; }
+    public string? Version { get; set; }
+    public string? DownloadUrl { get; set; }
+}
+
+public enum UpdateChannel { Stable, Preview }
+
+public class GitHubRelease
+{
+    public string TagName { get; set; } = "";
+    public bool Prerelease { get; set; }
+    public List<GitHubAsset> Assets { get; set; } = new();
+}
+
+public class GitHubAsset
+{
+    public string BrowserDownloadUrl { get; set; } = "";
+}
+```
+
+#### 8. 将插件管理迁移到主程序
+
+**新建目录**: `LanMountainDesktop/Services/Plugins/`
+
+**新建文件**: `LanMountainDesktop/Services/Plugins/PluginUpdateService.cs`
+
+```csharp
+namespace LanMountainDesktop.Services.Plugins;
+
+public class PluginUpdateService
+{
+    private readonly string _pluginsDirectory;
+    
+    public PluginUpdateService()
+    {
+        var appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+        _pluginsDirectory = Path.Combine(appData, "LanMountainDesktop", "plugins");
+    }
+    
+    public async Task CheckAndUpdatePluginsAsync()
+    {
+        // 检查插件更新
+        // 下载并安装更新
+    }
+}
+```
+
+---
+
+### P2: 自更新机制
+
+#### 9. 实现 Launcher 自更新
+
+**修改文件**: `LanMountainDesktop.Launcher/Program.cs`
+
+```csharp
+// 在 Main 方法开头添加自更新检查
+private static void CheckForLauncherUpdate()
+{
+    var rootDir = GetRootDirectory();
+    var updatePath = Path.Combine(rootDir, "LanMountainDesktop.Launcher.Update.exe");
+    
+    if (File.Exists(updatePath))
+    {
+        // 有新版本 Launcher，替换自身
+        try
+        {
+            var currentPath = Environment.ProcessPath;
+            var backupPath = currentPath + ".old";
+            
+            // 重命名当前版本
+            if (File.Exists(backupPath))
+                File.Delete(backupPath);
+            File.Move(currentPath!, backupPath);
+            
+            // 移动新版本
+            File.Move(updatePath, currentPath!);
+            
+            // 删除备份
+            File.Delete(backupPath);
+            
+            // 重启自己
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = currentPath,
+                UseShellExecute = true
+            });
+            Environment.Exit(0);
+        }
+        catch (Exception ex)
+        {
+            // 回滚
+            Console.Error.WriteLine($"Launcher 更新失败: {ex.Message}");
+        }
+    }
+}
+```
+
+#### 10. 主程序支持更新 Launcher
+
+**新建文件**: `LanMountainDesktop/Services/Update/LauncherUpdateService.cs`
+
+```csharp
+namespace LanMountainDesktop.Services.Update;
+
+public class LauncherUpdateService
+{
+    private readonly HttpClient _httpClient;
+    
+    public LauncherUpdateService()
+    {
+        _httpClient = new HttpClient();
+    }
+    
+    public async Task<bool> UpdateLauncherAsync(string downloadUrl)
+    {
+        var rootDir = LaunchContext.PackageRoot 
+            ?? Path.GetDirectoryName(Environment.ProcessPath)!;
+        var updatePath = Path.Combine(rootDir, "LanMountainDesktop.Launcher.Update.exe");
+        
+        // 下载新版本
+        var response = await _httpClient.GetAsync(downloadUrl);
+        await using var fs = File.Create(updatePath);
+        await response.Content.CopyToAsync(fs);
+        
+        return true;
+    }
+    
+    public void RestartWithNewLauncher()
+    {
+        var launcherPath = Path.Combine(
+            LaunchContext.PackageRoot ?? "",
+            "LanMountainDesktop.exe");
+            
+        Process.Start(new ProcessStartInfo
+        {
+            FileName = launcherPath,
+            UseShellExecute = true
+        });
+        
+        // 退出主程序，让 Launcher 接管
+        Environment.Exit(0);
+    }
+}
+```
+
+---
+
+### P3: 清理旧代码
+
+#### 11. 删除文件清单
+
+**删除以下文件/目录**:
+
+```
+LanMountainDesktop.Launcher/
+├── App.axaml                          ← 删除
+├── App.axaml.cs                       ← 删除
+├── Views/                             ← 删除整个目录
+│   ├── OobeWindow.axaml
+│   ├── OobeWindow.axaml.cs
+│   ├── SplashWindow.axaml
+│   └── SplashWindow.axaml.cs
+├── Services/                          ← 删除大部分
+│   ├── LauncherFlowCoordinator.cs     ← 删除
+│   ├── OobeStateService.cs            ← 删除
+│   ├── UpdateCheckService.cs          ← 删除
+│   ├── UpdateEngineService.cs         ← 删除
+│   ├── PluginInstallerService.cs      ← 删除
+│   └── PluginUpgradeQueueService.cs   ← 删除
+└── Models/                            ← 删除（如不再需要）
+```
+
+---
+
+### P4: GitHub Actions 工作流修改
+
+#### 12. 修改 release.yml
+
+**关键修改点**:
+
+1. **Launcher 单独编译**:
+```yaml
+- name: Publish Launcher
+  run: |
+    dotnet publish LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj `
+      -c Release `
+      -o ./publish/launcher-win-x64 `
+      --self-contained `
+      -r win-x64 `
+      -p:PublishSingleFile=false `
+      -p:PublishTrimmed=false `
+      -p:DebugType=none
+```
+
+2. **目录结构调整**:
+```yaml
+- name: Restructure for Launcher
+  run: |
+    $version = "${{ needs.prepare.outputs.version }}"
+    $publishDir = "publish/windows-x64"
+    $launcherDir = "publish/launcher-win-x64"
+    $appDir = "app-$version"
+    
+    # 创建新结构
+    $newStructure = "publish-launcher/windows-x64"
+    New-Item -ItemType Directory -Path $newStructure -Force
+    
+    # 移动主程序到 app-{version}/
+    $appPath = Join-Path $newStructure $appDir
+    Move-Item -Path $publishDir -Destination $appPath -Force
+    
+    # 复制 Launcher 到根目录
+    Copy-Item -Path "$launcherDir\*" -Destination $newStructure -Recurse -Force
+    
+    # 创建 .current 标记
+    New-Item -ItemType File -Path (Join-Path $appPath ".current") -Force
+```
+
+3. **Linux/macOS 同样调整**:
+- Linux: 修改 DEB 打包流程
+- macOS: 修改 DMG 打包流程
+
+#### 13. 修改 build.yml
+
+**修改**: 移除 Launcher 相关构建步骤，因为 Launcher 现在完全独立
+
+---
+
+### P5: 图标资源处理
+
+#### 14. Launcher 图标配置
+
+**方案**: 使用链接方式引用主程序图标
+
+**文件**: `LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj`
+
+```xml
+<ItemGroup>
+  <!-- 链接主程序的图标 -->
+  <Content Include="..\LanMountainDesktop\Assets\logo_nightly.ico" Link="Assets\logo_nightly.ico">
+    <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+  </Content>
+</ItemGroup>
+```
+
+#### 15. 安装程序配置
+
+**文件**: `LanMountainDesktop/installer/LanMountainDesktop.iss` (Inno Setup)
+
+**关键配置**:
+
+```ini
+[Setup]
+AppName=阑山桌面
+AppVersion={#MyAppVersion}
+DefaultDirName={autopf}\LanMountainDesktop
+OutputBaseFilename=LanMountainDesktop-Setup-{#MyAppVersion}-x64
+SetupIconFile=..\Assets\logo_nightly.ico
+UninstallDisplayIcon={app}\LanMountainDesktop.exe
+
+[Files]
+; Launcher
+Source: "..\..\publish\windows-x64\LanMountainDesktop.exe"; DestDir: "{app}"; Flags: ignoreversion
+; 主程序版本目录
+Source: "..\..\publish\windows-x64\app-{#MyAppVersion}\*"; DestDir: "{app}\app-{#MyAppVersion}"; Flags: ignoreversion recursesubdirs
+
+[Icons]
+; 桌面快捷方式
+Name: "{autodesktop}\阑山桌面"; Filename: "{app}\LanMountainDesktop.exe"; IconFilename: "{app}\LanMountainDesktop.exe"
+; 开始菜单
+Name: "{group}\阑山桌面"; Filename: "{app}\LanMountainDesktop.exe"; IconFilename: "{app}\LanMountainDesktop.exe"
+```
+
+---
+
+## 文件变更清单
+
+### 修改文件
+
+1. `LanMountainDesktop.Launcher/Program.cs` - 完全重写
+2. `LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj` - 简化依赖
+3. `LanMountainDesktop/LanMountainDesktop.csproj` - 移除 Launcher 引用
+4. `LanMountainDesktop/Program.cs` - 添加 LaunchContext
+5. `LanMountainDesktop/App.axaml.cs` - 添加 OOBE/Splash/更新入口
+6. `.github/workflows/release.yml` - 调整打包流程
+7. `.github/workflows/build.yml` - 适配新构建流程
+
+### 新增文件
+
+1. `LanMountainDesktop/Services/Oobe/OobeService.cs`
+2. `LanMountainDesktop/Views/Oobe/OobeWindow.axaml`
+3. `LanMountainDesktop/Views/Oobe/OobeWindow.axaml.cs`
+4. `LanMountainDesktop/Views/Splash/SplashWindow.axaml`
+5. `LanMountainDesktop/Views/Splash/SplashWindow.axaml.cs`
+6. `LanMountainDesktop/Services/Update/UpdateService.cs`
+7. `LanMountainDesktop/Services/Update/LauncherUpdateService.cs`
+8. `LanMountainDesktop/Services/Plugins/PluginUpdateService.cs`
+
+### 删除文件
+
+1. `LanMountainDesktop.Launcher/App.axaml`
+2. `LanMountainDesktop.Launcher/App.axaml.cs`
+3. `LanMountainDesktop.Launcher/Views/` 目录
+4. `LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs`
+5. `LanMountainDesktop.Launcher/Services/OobeStateService.cs`
+6. `LanMountainDesktop.Launcher/Services/UpdateCheckService.cs`
+7. `LanMountainDesktop.Launcher/Services/UpdateEngineService.cs`
+8. `LanMountainDesktop.Launcher/Services/PluginInstallerService.cs`
+9. `LanMountainDesktop.Launcher/Services/PluginUpgradeQueueService.cs`
+
+---
+
+## 风险与回滚方案
+
+### 风险
+
+1. **启动失败**: 新 Launcher 可能有 bug 导致无法启动
+2. **更新中断**: 更新逻辑迁移可能导致更新失败
+3. **图标丢失**: 图标配置错误导致快捷方式无图标
+
+### 回滚方案
+
+1. 保留原 Launcher 代码分支
+2. 准备紧急修复版本
+3. 用户可手动下载完整安装包恢复
+
+---
+
+## 验证清单
+
+- [ ] Launcher 能正常启动主程序
+- [ ] 版本选择逻辑正确
+- [ ] 旧版本清理正常
+- [ ] OOBE 流程正常
+- [ ] Splash 显示正常
+- [ ] 更新检查正常
+- [ ] 插件安装正常
+- [ ] GitHub Actions 打包成功
+- [ ] 安装程序图标正常
+- [ ] 快捷方式图标正常
+
+---
+
+## 实施顺序建议
+
+### 第一阶段（立即实施）
+1. 重写 Launcher Program.cs
+2. 修改 Launcher.csproj
+3. 移除主程序对 Launcher 的引用
+4. 测试基本启动功能
+
+### 第二阶段（功能迁移）
+1. 迁移 OOBE 到主程序
+2. 迁移 Splash 到主程序
+3. 迁移更新逻辑到主程序
+4. 迁移插件管理到主程序
+
+### 第三阶段（CI/CD）
+1. 修改 release.yml
+2. 修改 build.yml
+3. 测试打包流程
+4. 验证安装程序
+
+### 第四阶段（优化）
+1. 实现 Launcher 自更新
+2. 性能优化
+3. 清理旧代码

.trae/documents/launcher_improved_plan_v2.md

@@ -0,0 +1,717 @@
+# LanMountainDesktop Launcher 改进计划 V2
+
+## 核心设计理念
+
+**Launcher 是核心协调器，不是极简启动器**
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                           Launcher 职责定位                                   │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  Launcher 负责（启动前 & 退出后）：                                            │
+│  ┌─────────────────────────────────────────────────────────────────────┐   │
+│  │  • OOBE 首次引导                                                      │   │
+│  │  • 启动动画 (Splash)                                                  │   │
+│  │  • 插件安装                                                           │   │
+│  │  • 插件更新                                                           │   │
+│  │  • 应用增量更新安装（不是下载！）                                        │   │
+│  │  • 应用静默更新安装                                                   │   │
+│  └─────────────────────────────────────────────────────────────────────┘   │
+│                                                                             │
+│  主程序负责（运行时）：                                                        │
+│  ┌─────────────────────────────────────────────────────────────────────┐   │
+│  │  • 多线程下载（有完整 Downloader）                                     │   │
+│  │  • 更新渠道切换                                                        │   │
+│  │  • 下载管理                                                           │   │
+│  │  • 与 Launcher 通讯（启动进度）                                         │   │
+│  └─────────────────────────────────────────────────────────────────────┘   │
+│                                                                             │
+│  关键优势：                                                                  │
+│  • Launcher 在应用启动前运行 → 可以安装更新而不担心文件占用                    │
+│  • Launcher 在应用退出后运行 → 可以完成待处理的安装任务                        │
+│  • 主程序专注下载 → 利用完整的多线程下载器提高效率                            │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+## 为什么保留 Avalonia？
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                         保留 Avalonia 的理由                                  │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  1. 启动画面 (Splash)                                                        │
+│     ┌─────────────────────────────────────────────────────────────────┐    │
+│     │  • 需要显示启动进度                                                  │    │
+│     │  • 需要显示品牌 Logo                                                 │    │
+│     │  • 需要流畅的动画效果                                                 │    │
+│     │  • 纯 Win32 实现复杂且不易维护                                         │    │
+│     └─────────────────────────────────────────────────────────────────┘    │
+│                                                                             │
+│  2. OOBE 首次引导                                                            │
+│     ┌─────────────────────────────────────────────────────────────────┐    │
+│     │  • 需要多步骤向导界面                                                │    │
+│     │  • 需要丰富的交互控件                                                │    │
+│     │  • 需要与主程序一致的视觉风格                                          │    │
+│     │  • Avalonia 提供完整的 UI 框架                                        │    │
+│     └─────────────────────────────────────────────────────────────────┘    │
+│                                                                             │
+│  3. 与主程序的技术栈一致                                                      │
+│     ┌─────────────────────────────────────────────────────────────────┐    │
+│     │  • 共享主题和资源                                                    │    │
+│     │  • 共享控件和样式                                                    │    │
+│     │  • 便于维护和迭代                                                    │    │
+│     └─────────────────────────────────────────────────────────────────┘    │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+## 改进后的架构设计
+
+### 目录结构（保持不变）
+
+```
+安装根目录/
+├── LanMountainDesktop.exe              ← Launcher（Avalonia 应用）
+├── app-1.0.0/                          ← 版本目录
+│   ├── .current                        ← 当前版本标记
+│   ├── LanMountainDesktop.exe          ← 主程序
+│   └── ... (所有依赖)
+└── .launcher/                          ← Launcher 数据目录
+    ├── update/                         ← 更新缓存
+    │   └── incoming/                   ← 下载的更新包（主程序下载到这里）
+    └── snapshots/                      ← 版本快照
+```
+
+### 核心流程设计
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                          启动流程（含通讯机制）                                │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  1. 用户启动 LanMountainDesktop.exe (Launcher)                               │
+│     ↓                                                                       │
+│  2. Launcher 检查是否有待处理的更新安装                                        │
+│     ↓                                                                       │
+│  3. 有更新？──Yes──▶ 显示 Splash "正在安装更新..."                             │
+│     ↓                    ↓                                                  │
+│     No              安装更新（增量/静默）                                       │
+│     ↓                    ↓                                                  │
+│  4. 检查是否首次运行 ──Yes──▶ 显示 OOBE 窗口                                   │
+│     ↓ No                    ↓                                               │
+│  5. 显示 Splash "正在启动..."      完成 OOBE                                  │
+│     ↓                                                                       │
+│  6. 启动主程序进程（带通讯参数）                                                │
+│     ↓                                                                       │
+│  7. Launcher 保持运行，监听主程序进度 ─────── IPC 通讯 ───────▶ 主程序           │
+│     ↓                                                                       │
+│  8. 主程序报告启动进度 ─────── IPC 通讯 ───────▶ Launcher 更新 Splash           │
+│     ↓                                                                       │
+│  9. 主程序完全启动 ──Yes──▶ Launcher 关闭 Splash，进入后台/退出                  │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+### 退出流程
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                          退出流程（处理待安装任务）                             │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  1. 主程序准备退出                                                            │
+│     ↓                                                                       │
+│  2. 检查是否有待安装的更新/插件 ──Yes──▶ 重启 Launcher 并传递参数               │
+│     ↓ No                    ↓                                               │
+│  3. 正常退出              Launcher 在应用退出后运行                             │
+│                              ↓                                              │
+│                           安装待处理的任务                                     │
+│                              ↓                                              │
+│                           完成后再次启动主程序                                  │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+## Launcher 与主程序的通讯机制
+
+### IPC 方案选择
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                           IPC 通讯方案                                        │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  方案 1: 命令行参数 + 退出码（推荐用于启动阶段）                                │
+│  ┌─────────────────────────────────────────────────────────────────────┐   │
+│  │  Launcher 启动主程序:                                                │   │
+│  │    LanMountainDesktop.exe --launcher-pid 12345 --ipc-port 50000      │   │
+│  │                                                                      │   │
+│  │  主程序通过命名管道/HTTP 与 Launcher 通讯                               │   │
+│  └─────────────────────────────────────────────────────────────────────┘   │
+│                                                                             │
+│  方案 2: 命名管道（推荐用于进度报告）                                           │
+│  ┌─────────────────────────────────────────────────────────────────────┐   │
+│  │  Launcher 创建命名管道: \\.\pipe\LanMountainDesktop_Launcher          │   │
+│  │  主程序连接并发送进度消息                                              │   │
+│  │                                                                      │   │
+│  │  消息格式: JSON                                                       │   │
+│  │    {"stage": "initializing", "progress": 30, "message": "加载设置..."} │   │
+│  └─────────────────────────────────────────────────────────────────────┘   │
+│                                                                             │
+│  方案 3: 共享内存/文件（简单状态同步）                                          │
+│  ┌─────────────────────────────────────────────────────────────────────┐   │
+│  │  Launcher 和主程序读写同一个状态文件                                     │   │
+│  │  .launcher/state/startup_status.json                                  │   │
+│  └─────────────────────────────────────────────────────────────────────┘   │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+### 通讯协议设计
+
+```csharp
+// 共享契约（LanMountainDesktop.Shared.Contracts）
+namespace LanMountainDesktop.Shared.Contracts.Launcher;
+
+public enum StartupStage
+{
+    Initializing,
+    LoadingSettings,
+    LoadingPlugins,
+    InitializingUI,
+    Ready
+}
+
+public record StartupProgressMessage
+{
+    public StartupStage Stage { get; init; }
+    public int ProgressPercent { get; init; }  // 0-100
+    public string? Message { get; init; }
+    public DateTimeOffset Timestamp { get; init; } = DateTimeOffset.UtcNow;
+}
+
+public static class LauncherIpc
+{
+    public const string PipeName = "LanMountainDesktop_Launcher";
+    public const string EnvironmentVariablePrefix = "LMD_";
+}
+```
+
+## 详细实施步骤
+
+### P0: 架构调整（核心）
+
+#### 1. 调整 Launcher 项目引用
+
+**文件**: `LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj`
+
+**修改**:
+- 保留 Avalonia 依赖
+- 移除 PluginSdk 引用（Launcher 不需要）
+- 添加 Shared.Contracts 引用（用于 IPC）
+
+```xml
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <ApplicationIcon>Assetsogo_nightly.ico</ApplicationIcon>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!-- 保留 Avalonia -->
+    <PackageReference Include="Avalonia" Version="11.3.12" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.12" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.12" />
+    
+    <!-- 只引用 Shared.Contracts（IPC 协议） -->
+    <ProjectReference Include="..\LanMountainDesktop.Shared.Contracts\LanMountainDesktop.Shared.Contracts.csproj" />
+  </ItemGroup>
+  
+  <!-- 图标资源 -->
+  <ItemGroup>
+    <Content Include="..\LanMountainDesktop\Assets\logo_nightly.ico" Link="Assets\logo_nightly.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+</Project>
+```
+
+#### 2. 移除主程序对 Launcher 的引用
+
+**文件**: `LanMountainDesktop/LanMountainDesktop.csproj`
+
+**修改**: 删除 Launcher 引用
+```xml
+<!-- 删除 -->
+<!-- <ProjectReference Include="..\LanMountainDesktop.Launcher\LanMountainDesktop.Launcher.csproj" ReferenceOutputAssembly="false" /> -->
+```
+
+#### 3. 创建 IPC 通讯契约
+
+**新建文件**: `LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs`
+
+```csharp
+namespace LanMountainDesktop.Shared.Contracts.Launcher;
+
+public enum StartupStage
+{
+    Initializing,
+    LoadingSettings,
+    LoadingPlugins,
+    InitializingUI,
+    Ready
+}
+
+public record StartupProgressMessage
+{
+    public StartupStage Stage { get; init; }
+    public int ProgressPercent { get; init; }
+    public string? Message { get; init; }
+    public DateTimeOffset Timestamp { get; init; } = DateTimeOffset.UtcNow;
+}
+
+public static class LauncherIpcConstants
+{
+    public const string PipeName = "LanMountainDesktop_Launcher";
+    public const string LauncherPidEnvVar = "LMD_LAUNCHER_PID";
+    public const string PackageRootEnvVar = "LMD_PACKAGE_ROOT";
+    public const string VersionEnvVar = "LMD_VERSION";
+}
+```
+
+### P1: Launcher 端实现
+
+#### 4. 实现 IPC 服务端
+
+**新建文件**: `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs`
+
+```csharp
+using System.IO.Pipes;
+using System.Text.Json;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Launcher.Services.Ipc;
+
+public class LauncherIpcServer : IDisposable
+{
+    private readonly CancellationTokenSource _cts = new();
+    private NamedPipeServerStream? _pipeServer;
+    private readonly Action<StartupProgressMessage> _onProgress;
+    
+    public LauncherIpcServer(Action<StartupProgressMessage> onProgress)
+    {
+        _onProgress = onProgress;
+    }
+    
+    public async Task StartAsync()
+    {
+        while (!_cts.Token.IsCancellationRequested)
+        {
+            try
+            {
+                _pipeServer = new NamedPipeServerStream(
+                    LauncherIpcConstants.PipeName,
+                    PipeDirection.In,
+                    1,
+                    PipeTransmissionMode.Message);
+                
+                await _pipeServer.WaitForConnectionAsync(_cts.Token);
+                
+                using var reader = new StreamReader(_pipeServer);
+                var json = await reader.ReadToEndAsync(_cts.Token);
+                
+                if (!string.IsNullOrEmpty(json))
+                {
+                    var message = JsonSerializer.Deserialize<StartupProgressMessage>(json);
+                    if (message != null)
+                    {
+                        _onProgress(message);
+                    }
+                }
+                
+                _pipeServer.Disconnect();
+            }
+            catch (OperationCanceledException)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"IPC error: {ex.Message}");
+            }
+        }
+    }
+    
+    public void Dispose()
+    {
+        _cts.Cancel();
+        _pipeServer?.Dispose();
+        _cts.Dispose();
+    }
+}
+```
+
+#### 5. 修改 Launcher 启动流程
+
+**修改文件**: `LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs`
+
+```csharp
+public async Task<LauncherResult> RunAsync()
+{
+    // 1. 清理旧版本
+    _deploymentLocator.CleanupDestroyedDeployments();
+    
+    // 2. 检查并安装待处理的更新（主程序下载的）
+    var pendingUpdate = _updateEngine.CheckPendingUpdate();
+    if (pendingUpdate.HasUpdate)
+    {
+        _splashWindow?.UpdateStatus("正在安装更新...");
+        var updateResult = await _updateEngine.ApplyPendingUpdateAsync();
+        if (!updateResult.Success)
+        {
+            return updateResult;
+        }
+    }
+    
+    // 3. 检查并安装待处理的插件更新
+    var pendingPlugins = _pluginUpgradeQueueService.CheckPendingUpgrades();
+    if (pendingPlugins.HasUpgrades)
+    {
+        _splashWindow?.UpdateStatus("正在更新插件...");
+        var pluginResult = _pluginUpgradeQueueService.ApplyPendingUpgrades();
+        if (!pluginResult.Success)
+        {
+            return pluginResult;
+        }
+    }
+    
+    // 4. OOBE
+    if (_oobeStateService.IsFirstRun())
+    {
+        _splashWindow?.Hide();
+        foreach (var step in _oobeSteps)
+        {
+            await step.RunAsync(CancellationToken.None);
+        }
+        _splashWindow?.Show();
+    }
+    
+    // 5. 启动 IPC 服务端监听主程序进度
+    using var ipcServer = new LauncherIpcServer(msg =>
+    {
+        _splashWindow?.UpdateProgress(msg.ProgressPercent, msg.Message);
+    });
+    _ = ipcServer.StartAsync();
+    
+    // 6. 启动主程序
+    _splashWindow?.UpdateStatus("正在启动...");
+    var hostResult = LaunchHostWithIpc();
+    if (!hostResult.Success)
+    {
+        return hostResult;
+    }
+    
+    // 7. 等待主程序报告就绪或超时
+    await WaitForHostReadyOrTimeoutAsync(TimeSpan.FromSeconds(30));
+    
+    return new LauncherResult { Success = true };
+}
+```
+
+### P2: 主程序端实现
+
+#### 6. 实现 IPC 客户端
+
+**新建文件**: `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs`
+
+```csharp
+using System.IO.Pipes;
+using System.Text.Json;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Services.Launcher;
+
+public class LauncherIpcClient : IDisposable
+{
+    private NamedPipeClientStream? _pipeClient;
+    
+    public async Task ConnectAsync(CancellationToken cancellationToken = default)
+    {
+        _pipeClient = new NamedPipeClientStream(
+            ".",
+            LauncherIpcConstants.PipeName,
+            PipeDirection.Out);
+        
+        await _pipeClient.ConnectAsync(5000, cancellationToken);
+    }
+    
+    public async Task ReportProgressAsync(StartupProgressMessage message)
+    {
+        if (_pipeClient?.IsConnected != true)
+            return;
+        
+        var json = JsonSerializer.Serialize(message);
+        using var writer = new StreamWriter(_pipeClient, leaveOpen: true);
+        await writer.WriteAsync(json);
+        await writer.FlushAsync();
+    }
+    
+    public void Dispose()
+    {
+        _pipeClient?.Dispose();
+    }
+}
+```
+
+#### 7. 主程序启动时报告进度
+
+**修改文件**: `LanMountainDesktop/App.axaml.cs`
+
+```csharp
+public override async void OnFrameworkInitializationCompleted()
+{
+    // 检查是否从 Launcher 启动
+    var launcherPid = Environment.GetEnvironmentVariable(LauncherIpcConstants.LauncherPidEnvVar);
+    if (!string.IsNullOrEmpty(launcherPid))
+    {
+        // 连接到 Launcher 的 IPC 服务端
+        _launcherIpc = new LauncherIpcClient();
+        await _launcherIpc.ConnectAsync();
+        
+        // 报告启动进度
+        await _launcherIpc.ReportProgressAsync(new StartupProgressMessage
+        {
+            Stage = StartupStage.Initializing,
+            ProgressPercent = 10,
+            Message = "正在初始化..."
+        });
+    }
+    
+    // 初始化设置
+    await _launcherIpc?.ReportProgressAsync(new StartupProgressMessage
+    {
+        Stage = StartupStage.LoadingSettings,
+        ProgressPercent = 30,
+        Message = "正在加载设置..."
+    });
+    InitializeSettings();
+    
+    // 加载插件
+    await _launcherIpc?.ReportProgressAsync(new StartupProgressMessage
+    {
+        Stage = StartupStage.LoadingPlugins,
+        ProgressPercent = 50,
+        Message = "正在加载插件..."
+    });
+    await InitializePluginsAsync();
+    
+    // 初始化 UI
+    await _launcherIpc?.ReportProgressAsync(new StartupProgressMessage
+    {
+        Stage = StartupStage.InitializingUI,
+        ProgressPercent = 80,
+        Message = "正在初始化界面..."
+    });
+    InitializeUI();
+    
+    // 就绪
+    await _launcherIpc?.ReportProgressAsync(new StartupProgressMessage
+    {
+        Stage = StartupStage.Ready,
+        ProgressPercent = 100,
+        Message = "就绪"
+    });
+    
+    base.OnFrameworkInitializationCompleted();
+}
+```
+
+### P3: 更新流程整合
+
+#### 8. 主程序下载更新
+
+**主程序职责**:
+```csharp
+// 主程序中的更新服务
+public class AppUpdateService
+{
+    public async Task DownloadUpdateAsync(string version, string downloadUrl)
+    {
+        // 使用多线程下载器下载更新包
+        var downloader = new MultiThreadedDownloader();
+        var targetPath = Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "LanMountainDesktop",
+            ".launcher",
+            "update",
+            "incoming",
+            $"update-{version}.zip");
+        
+        await downloader.DownloadAsync(downloadUrl, targetPath);
+        
+        // 标记为待安装
+        File.WriteAllText(
+            Path.Combine(Path.GetDirectoryName(targetPath)!, ".pending"),
+            version);
+    }
+}
+```
+
+#### 9. Launcher 安装更新
+
+**Launcher 职责**:
+```csharp
+// Launcher 中的更新安装服务
+public class UpdateInstallationService
+{
+    public async Task<InstallResult> InstallPendingUpdateAsync()
+    {
+        var pendingPath = Path.Combine(
+            _appRoot,
+            ".launcher",
+            "update",
+            "incoming",
+            ".pending");
+        
+        if (!File.Exists(pendingPath))
+            return InstallResult.NoUpdate;
+        
+        var version = File.ReadAllText(pendingPath);
+        var updatePackagePath = Path.Combine(
+            Path.GetDirectoryName(pendingPath)!,
+            $"update-{version}.zip");
+        
+        // 创建新版本目录
+        var newVersionDir = Path.Combine(_appRoot, $"app-{version}");
+        Directory.CreateDirectory(newVersionDir);
+        File.WriteAllText(Path.Combine(newVersionDir, ".partial"), "");
+        
+        // 解压更新包
+        ZipFile.ExtractToDirectory(updatePackagePath, newVersionDir);
+        
+        // 验证文件完整性
+        // ...
+        
+        // 切换版本标记
+        var currentDir = _deploymentLocator.FindCurrentDeploymentDirectory();
+        if (currentDir != null)
+        {
+            File.Delete(Path.Combine(currentDir, ".current"));
+            File.WriteAllText(Path.Combine(currentDir, ".destroy"), "");
+        }
+        
+        File.WriteAllText(Path.Combine(newVersionDir, ".current"), "");
+        File.Delete(Path.Combine(newVersionDir, ".partial"));
+        
+        // 清理待安装标记
+        File.Delete(pendingPath);
+        File.Delete(updatePackagePath);
+        
+        return InstallResult.Success;
+    }
+}
+```
+
+### P4: GitHub Actions 工作流
+
+#### 10. 修改 release.yml
+
+**关键修改点**:
+
+```yaml
+# 1. Launcher 单独编译（保留 Avalonia）
+- name: Publish Launcher
+  run: |
+    dotnet publish LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj `
+      -c Release `
+      -o ./publish/launcher-win-x64 `
+      --self-contained `
+      -r win-x64 `
+      -p:PublishSingleFile=false `
+      -p:DebugType=none
+
+# 2. 目录结构调整
+- name: Restructure for Launcher
+  run: |
+    $version = "${{ needs.prepare.outputs.version }}"
+    $publishDir = "publish/windows-x64"
+    $launcherDir = "publish/launcher-win-x64"
+    $appDir = "app-$version"
+    
+    # 创建新结构
+    $newStructure = "publish-launcher/windows-x64"
+    New-Item -ItemType Directory -Path $newStructure -Force
+    
+    # 移动主程序到 app-{version}/
+    $appPath = Join-Path $newStructure $appDir
+    Move-Item -Path $publishDir -Destination $appPath -Force
+    
+    # 复制 Launcher 到根目录
+    Copy-Item -Path "$launcherDir\*" -Destination $newStructure -Recurse -Force
+    
+    # 创建 .current 标记
+    New-Item -ItemType File -Path (Join-Path $appPath ".current") -Force
+```
+
+## 文件变更清单
+
+### 修改文件
+
+1. `LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj` - 调整引用
+2. `LanMountainDesktop/LanMountainDesktop.csproj` - 移除 Launcher 引用
+3. `LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs` - 添加 IPC 和更新安装
+4. `LanMountainDesktop/App.axaml.cs` - 添加 IPC 客户端和进度报告
+5. `.github/workflows/release.yml` - 调整打包流程
+
+### 新增文件
+
+1. `LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs` - IPC 契约
+2. `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs` - IPC 服务端
+3. `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs` - IPC 客户端
+4. `LanMountainDesktop.Launcher/Services/Update/UpdateInstallationService.cs` - 更新安装
+
+### 删除文件
+
+1. 主程序对 Launcher 的项目引用（已存在）
+
+## 实施顺序
+
+### 第一阶段：基础架构
+1. 创建 IPC 契约（Shared.Contracts）
+2. 调整 Launcher 项目引用
+3. 移除主程序对 Launcher 的引用
+4. 测试基本启动
+
+### 第二阶段：IPC 实现
+1. 实现 Launcher IPC 服务端
+2. 实现主程序 IPC 客户端
+3. 测试进度报告
+
+### 第三阶段：更新流程
+1. 主程序实现下载功能
+2. Launcher 实现安装功能
+3. 测试完整更新流程
+
+### 第四阶段：CI/CD
+1. 修改 GitHub Actions
+2. 测试打包流程
+3. 验证安装程序
+
+## 验证清单
+
+- [ ] Launcher 能正常启动主程序
+- [ ] Launcher 显示 Splash 并接收进度更新
+- [ ] 主程序能向 Launcher 报告启动进度
+- [ ] 主程序能下载更新
+- [ ] Launcher 能安装待处理的更新
+- [ ] OOBE 流程正常
+- [ ] 插件更新流程正常
+- [ ] GitHub Actions 打包成功
+- [ ] 安装程序图标正常
+- [ ] 快捷方式图标正常

.trae/skills/refactoring-insight/SKILL.md

@@ -0,0 +1,112 @@
+---
+name: "refactoring-insight"
+description: "Analyzes codebase for refactoring opportunities: large files, code duplication, god classes, naming inconsistencies, tight coupling, and missing abstractions. Invoke when user asks for refactoring insight/analysis or wants to improve code architecture."
+---
+
+# Refactoring Insight
+
+Deep codebase analysis skill that identifies structural problems and produces prioritized refactoring recommendations.
+
+## When to Invoke
+
+- User asks for "refactoring insight", "refactoring analysis", "code quality analysis", "architecture review"
+- User wants to understand what should be refactored in the codebase
+- User asks "where are the code smells?" or "what needs refactoring?"
+
+## Analysis Dimensions
+
+Run all 6 dimensions in parallel where possible. For each dimension, use search agents to gather data, then synthesize findings.
+
+### 1. Large Files / God Classes
+
+- Find all .cs files over 300 lines, sorted by line count descending
+- Identify partial classes and sum their total line count across files
+- Flag classes with 15+ methods or constructors taking 8+ parameters
+- Focus on: Views/, ViewModels/, Services/, plugins/
+
+**Output**: Table of files with line counts and responsibility summary.
+
+### 2. Code Duplication
+
+Search for these specific duplication patterns:
+
+- **Service boilerplate**: Repeated DI registration, `new` instantiation instead of DI
+- **Data service pattern**: Services that fetch/parse/transform data similarly (Load → Map → Save)
+- **Localization pattern**: `private readonly LocalizationService _localizationService = new();` and `L()` helper method repetitions
+- **Helper method duplication**: Methods like `ResolveUnifiedMainRadiusValue`, `NormalizeConfig`, `ParticleState` classes copied across files
+- **Error handling pattern**: Identical try-catch blocks repeated in multiple methods
+- **Settings snapshot pattern**: `_settingsFacade.Settings.LoadSnapshot<T>(scope)` call sites
+
+**Output**: List of duplicated patterns with file locations and line numbers.
+
+### 3. Tight Coupling
+
+- Services instantiated via `new` instead of DI injection
+- ViewModels directly accessing infrastructure-layer APIs (e.g., `LoadSnapshot/SaveSnapshot`)
+- Hard-coded dependencies (GitHub repo owner/name, default values)
+- `Application.Current` upcasting to access services: `(Application.Current as App)?.SomeService`
+- Platform-specific code embedded in cross-platform services without interface abstraction
+
+**Output**: Table of coupling violations with severity (high/medium/low).
+
+### 4. Naming Inconsistencies
+
+- Service suffix inconsistency: `Service` vs `Store` vs `Helper` vs `Provider` vs `Manager` vs `Factory` for similar responsibilities
+- Model suffix inconsistency: `Snapshot` vs `State` vs `Types` for similar concepts
+- Platform prefix inconsistency: `Windows`/`Linux` full name vs `Mac` abbreviation
+- Confusing names: services with similar names but different responsibilities (e.g., `NotificationService` vs `NotificationListenerService`)
+
+**Output**: Categorized list of naming inconsistencies.
+
+### 5. Missing Abstractions
+
+- Services without corresponding interfaces (check for `I<ServiceName>` pattern)
+- Common patterns that could be extracted into base classes:
+  - `SettingsPageViewModelBase` for shared ViewModel boilerplate
+  - `JsonFileSettingsService<TSnapshot>` for repeated settings persistence
+  - `SettingsDomainServiceBase<TState>` for Load-Map-Save pattern
+  - `DesktopComponentWidgetBase` for shared Widget code
+  - `ComponentEditorViewBase` enhancements (e.g., `_suppressEvents` pattern)
+- Static singleton/Factory providers repeating thread-safe lazy-load boilerplate
+
+**Output**: List of missing abstractions with proposed base class/interface names.
+
+### 6. Misplaced Responsibilities
+
+- Files in wrong directories (e.g., data access in Settings/, UI services mixed with data services)
+- ViewModels containing business logic or file system operations
+- Widget code-behind files with excessive logic (>200 lines)
+- Platform-specific services not organized into subdirectories
+
+**Output**: List of misplaced files/classes with recommended new locations.
+
+## Output Format
+
+Produce a structured report with:
+
+1. **Summary table**: Total metrics (file count, duplication count, etc.)
+2. **Priority-ranked findings**: P0 (must fix), P1 (should fix), P2 (recommended), P3 (nice to have)
+3. **Each finding includes**: Problem description, affected files with links, specific line numbers, recommended action, estimated impact
+
+### Priority Criteria
+
+- **P0**: Files over 1000 lines with mixed responsibilities; patterns duplicated 10+ times; god classes with 20+ dependencies
+- **P1**: Patterns duplicated 5-9 times; services without interfaces that are widely used; DI bypass affecting testability
+- **P2**: Patterns duplicated 3-4 times; naming inconsistencies affecting readability; misplaced files
+- **P3**: Minor naming variations; single-instance duplications; organizational improvements
+
+## Project-Specific Context
+
+This skill is aware of the LanMountainDesktop project structure:
+
+- `LanMountainDesktop/Services/` — Business and infrastructure services
+- `LanMountainDesktop/Services/Settings/` — Settings subsystem
+- `LanMountainDesktop/ViewModels/` — View models
+- `LanMountainDesktop/Views/Components/` — Desktop widget components
+- `LanMountainDesktop/Views/ComponentEditors/` — Widget editor views
+- `LanMountainDesktop/plugins/` — Plugin runtime
+- `LanMountainDesktop.PluginSdk/` — Plugin SDK public API
+- `LanMountainDesktop.Shared.Contracts/` — Host/plugin shared contracts
+- `LanMountainDesktop.Appearance/` — Appearance and corner radius infrastructure
+
+When analyzing, respect the project's architectural boundaries documented in `docs/ARCHITECTURE.md` and `docs/ECOSYSTEM_BOUNDARIES.md`.

.trae/specs/fused-desktop-library-redesign/spec.md

@@ -0,0 +1,166 @@
+# 融合桌面组件库窗口重设计规格
+
+## Why
+
+当前融合桌面组件库窗口（FusedDesktopComponentLibraryWindow）的UI设计较为基础，与Windows 11小组件编辑面板相比，缺乏现代化的交互体验和视觉层次。用户需要一个更直观、更美观的界面来浏览和添加组件到系统桌面（负一屏）。
+
+参考Windows 11小组件编辑面板的设计特点：
+
+* 左侧分类列表，右侧选中组件的详细预览
+
+* 大型组件预览区域，让用户清楚看到组件效果
+
+* 底部明显的"添加"操作按钮
+
+* 简洁的关闭按钮（X）在右上角
+
+* 深色主题配合毛玻璃效果
+
+## What Changes
+
+* **重新设计窗口布局**：从左右分栏（分类列表+组件网格）改为左侧面板+右侧预览区的布局
+
+* **添加组件详情预览区**：选中组件后右侧显示大尺寸预览和组件信息
+
+* **优化关闭按钮**：使用标准的X图标按钮，不使用圆形样式
+
+* **添加底部操作栏**：包含"添加到桌面"主操作按钮和"查找更多组件"链接
+
+* **复用阑山桌面组件库分类**：使用相同的分类ID、图标和本地化文本
+
+* **移除搜索功能**：参考Windows 11设计，暂不提供搜索
+
+## Impact
+
+* 受影响文件：
+
+  * `LanMountainDesktop/Views/FusedDesktopComponentLibraryWindow.axaml`
+
+  * `LanMountainDesktop/Views/FusedDesktopComponentLibraryWindow.axaml.cs`
+
+  * `LanMountainDesktop/Views/FusedDesktopComponentLibraryControl.axaml`
+
+  * `LanMountainDesktop/Views/FusedDesktopComponentLibraryControl.axaml.cs`
+
+  * `LanMountainDesktop/ViewModels/ComponentLibraryWindowViewModel.cs`（可能需要添加新属性）
+
+## ADDED Requirements
+
+### Requirement: 窗口布局重设计
+
+系统应提供一个类似于Windows 11小组件编辑面板的组件库窗口。
+
+#### Scenario: 窗口整体结构
+
+* **GIVEN** 用户从托盘菜单打开融合桌面组件库
+
+* **WHEN** 窗口显示时
+
+* **THEN** 窗口应呈现：
+
+  * 顶部标题栏：左侧显示"添加小组件"标题，右侧有关闭按钮（X）
+
+  * 左侧面板：分类列表（复用阑山桌面组件库的分类和图标）
+
+  * 右侧主区域：选中组件的大尺寸预览 + 组件信息 + 添加按钮
+
+  * 底部："查找更多组件"链接
+
+#### Scenario: 分类列表交互
+
+* **GIVEN** 左侧显示组件分类列表
+
+* **WHEN** 用户点击某个分类
+
+* **THEN** 右侧应显示该分类下的第一个组件的预览
+
+* **AND** 分类项应有选中状态视觉反馈
+
+* **AND** 分类图标和名称应与阑山桌面组件库保持一致
+
+#### Scenario: 组件预览区
+
+* **GIVEN** 用户选中一个组件
+
+* **WHEN** 预览区显示时
+
+* **THEN** 应显示：
+
+  * 组件标题（大字号）
+
+  * 大尺寸组件预览图（接近实际尺寸）
+
+  * 组件描述/功能说明
+
+  * 底部"添加到桌面"按钮
+
+#### Scenario: 添加组件操作
+
+* **GIVEN** 用户查看组件预览
+
+* **WHEN** 用户点击"添加到桌面"按钮
+
+* **THEN** 组件应被添加到系统桌面（负一屏）中央
+
+* **AND** 窗口应关闭
+
+#### Scenario: 关闭按钮样式
+
+* **GIVEN** 窗口标题栏有关闭按钮
+
+* **THEN** 关闭按钮应使用标准的X图标
+
+* **AND** 不使用圆形背景或特殊样式
+
+* **AND** 使用 `DesignCornerRadiusSm` 动态资源
+
+#### Scenario: 查找更多组件链接
+
+* **GIVEN** 窗口底部显示"查找更多组件"链接
+
+* **WHEN** 用户点击该链接
+
+* **THEN** 应打开设置窗口的插件目录页面（后续将改为插件市场）
+
+## MODIFIED Requirements
+
+### Requirement: 组件列表展示
+
+原实现使用网格展示所有组件，新实现改为：
+
+* 左侧列表仅显示分类（复用阑山桌面组件库的分类ID和图标映射）
+
+* 右侧预览区一次只显示一个组件的详细信息
+
+* ~~移除搜索功能~~（根据Windows 11设计，暂不提供搜索）
+
+### Requirement: 关闭按钮圆角规范
+
+原实现关闭按钮使用硬编码 `CornerRadius="18"`，应改为使用动态资源 `DesignCornerRadiusSm`。
+
+### Requirement: 分类图标复用
+
+分类图标映射应与阑山桌面组件库保持一致：
+
+* Clock -> Symbol.Clock
+
+* Date -> Symbol.CalendarDate
+
+* Weather -> Symbol.WeatherSunny
+
+* Board -> Symbol.Edit
+
+* Media -> Symbol.Play
+
+* Info -> Symbol.Info
+
+* Calculator -> Symbol.Calculator
+
+* Study -> Symbol.Hourglass
+
+* 其他 -> Symbol.Apps
+
+## REMOVED Requirements
+
+* ~~搜索功能~~：根据Windows 11小组件面板设计，暂不提供搜索功能
+

.trae/specs/fused-desktop-library-redesign/tasks.md

@@ -0,0 +1,35 @@
+# Tasks
+
+- [x] Task 1: 修改 FusedDesktopComponentLibraryWindow.axaml 窗口布局
+  - [x] SubTask 1.1: 重新设计标题栏，使用标准X关闭按钮，移除圆形样式，使用 DesignCornerRadiusSm
+  - [x] SubTask 1.2: 调整窗口整体布局为左侧面板+右侧预览区
+  - [x] SubTask 1.3: 添加底部"查找更多组件"链接区域
+
+- [x] Task 2: 修改 FusedDesktopComponentLibraryControl.axaml 控件布局
+  - [x] SubTask 2.1: 重新设计左侧面板：仅保留分类列表（移除搜索框）
+  - [x] SubTask 2.2: 重新设计右侧预览区：组件标题 + 大尺寸预览 + 描述 + 添加按钮
+  - [x] SubTask 2.3: 优化分类列表项样式，添加选中状态视觉反馈
+  - [x] SubTask 2.4: 复用阑山桌面组件库的分类图标映射
+
+- [x] Task 3: 更新 ViewModel 支持新交互模式
+  - [x] SubTask 3.1: 在 ComponentLibraryWindowViewModel 中添加 SelectedComponent 属性
+  - [x] SubTask 3.2: 添加组件描述属性支持
+
+- [x] Task 4: 更新 FusedDesktopComponentLibraryControl.axaml.cs 代码逻辑
+  - [x] SubTask 4.1: 修改分类选择逻辑，选中分类时显示该分类第一个组件
+  - [x] SubTask 4.2: 添加组件选中逻辑
+  - [x] SubTask 4.3: 移除搜索相关代码
+  - [x] SubTask 4.4: 复用阑山桌面组件库的分类图标和本地化方法
+  - [x] SubTask 4.5: 添加"查找更多组件"链接点击处理（打开设置窗口插件目录）
+
+- [x] Task 5: 验证和测试
+  - [x] SubTask 5.1: 验证关闭按钮使用动态圆角资源 DesignCornerRadiusSm
+  - [x] SubTask 5.2: 验证窗口布局符合Windows 11小组件面板风格
+  - [x] SubTask 5.3: 验证分类图标与阑山桌面组件库一致
+  - [x] SubTask 5.4: 验证组件添加功能正常工作
+  - [x] SubTask 5.5: 验证"查找更多组件"链接能打开设置窗口
+
+# Task Dependencies
+- Task 3 依赖于 Task 1 和 Task 2 的UI设计确定
+- Task 4 依赖于 Task 3 的ViewModel更新
+- Task 5 依赖于所有前置任务完成

.trae/specs/launcher-oobe-elevation-hardening/checklist.md

@@ -0,0 +1,8 @@
+# Launcher OOBE and Elevation Hardening Checklist
+
+- [ ] New install shows OOBE once.
+- [ ] Same-user reinstall does not show OOBE again.
+- [ ] `postinstall` launch path is handled without misclassifying the user state.
+- [ ] `apply-update` and `plugin-install` do not auto-enter OOBE.
+- [ ] Default plugin install does not request UAC.
+- [ ] Logs include OOBE status, suppression reason, and launch source.

.trae/specs/launcher-oobe-elevation-hardening/spec.md

@@ -0,0 +1,43 @@
+# Launcher OOBE and Elevation Hardening Spec
+
+## Goal
+
+Stabilize the launcher startup path so that:
+
+- OOBE does not reappear for the same Windows user after reinstall/upgrade.
+- Normal startup, OOBE, update checks, incremental downloads, and default plugin installs do not trigger unexpected UAC prompts.
+- Only the approved elevation paths remain allowed.
+
+## Scope
+
+- Launcher OOBE state handling
+- launch source classification
+- elevation boundary cleanup
+- plugin install default behavior
+- diagnostic logging and troubleshooting guidance
+
+## Behavior
+
+- OOBE state is stored as a per-user truth source at `%LOCALAPPDATA%\LanMountainDesktop\.launcher\state\oobe-state.json`.
+- `first_run_completed` is treated as a legacy compatibility marker only.
+- `launchSource` values are treated as:
+  - `normal`
+  - `postinstall`
+  - `apply-update`
+  - `plugin-install`
+  - `debug-preview`
+- Automatic OOBE is allowed only for normal user-mode startup.
+- `postinstall` may show OOBE only when the launcher is not elevated and user state is available.
+- `apply-update`, `plugin-install`, and `debug-preview` must not auto-enter OOBE.
+- Allowed elevation paths are limited to:
+  - the installer itself
+  - full installer update application
+  - user-confirmed legacy uninstall
+- Default plugin installation targets the current user's LocalAppData scope and must not request elevation by default.
+
+## Acceptance
+
+- Same-user reinstall does not re-enter OOBE.
+- Missing or damaged OOBE state does not silently bounce the user back into OOBE loops.
+- Default plugin installation path never triggers surprise UAC.
+- Logs can explain why OOBE was shown or suppressed and why elevation was or was not requested.

.trae/specs/launcher-oobe-elevation-hardening/tasks.md

@@ -0,0 +1,9 @@
+# Launcher OOBE and Elevation Hardening Tasks
+
+- [ ] Move OOBE state to a single per-user JSON source.
+- [ ] Treat `first_run_completed` as legacy migration-only state.
+- [ ] Add explicit `launchSource` handling for startup and maintenance flows.
+- [ ] Suppress auto-OOBE for maintenance and elevated launch contexts.
+- [ ] Remove default elevation from plugin installation into the user data scope.
+- [ ] Add structured diagnostics for OOBE decisions and elevation reasons.
+- [ ] Update launcher docs and troubleshooting guidance.

.trae/specs/launcher-upgrade/checklist.md

@@ -0,0 +1,11 @@
+# Launcher Upgrade Checklist
+
+- [x] Build passes for `LanMountainDesktop.Launcher`.
+- [x] `update check` command returns structured JSON result.
+- [x] `plugin update` command returns structured JSON result.
+- [x] Legacy plugin install arguments still execute.
+- [x] OOBE and splash are implemented as separate windows.
+- [x] Update and rollback logic use version directory markers.
+
+- [ ] Treat `first_run_completed` as legacy-only compatibility data.
+- [ ] Keep the authoritative OOBE state in `%LOCALAPPDATA%\LanMountainDesktop\.launcher\state\oobe-state.json`.

.trae/specs/launcher-upgrade/spec.md

@@ -0,0 +1,60 @@
+# Launcher Upgrade Spec
+
+## Goal
+
+Upgrade `LanMountainDesktop.Launcher` into the unified Launcher for:
+
+- OOBE first-run entry
+- startup splash window
+- silent/incremental/rollback update
+- plugin install/update
+
+## Scope (Phase 1)
+
+- Avalonia GUI launcher with two windows:
+  - `OOBEWindow` (first run only)
+  - `SplashWindow` (every launch)
+- Default command `launch`
+- CLI commands:
+  - `update check|download|apply|rollback`
+  - `plugin install|update`
+- Legacy compatibility:
+  - `--source --plugins-dir --result` still works for plugin install
+
+## Update Behavior
+
+- ClassIsland-style deployment folders:
+  - `app-<version>-<number>/`
+  - marker files `.current`, `.partial`, `.destroy`
+- Signed file map:
+  - `files.json`
+  - `files.json.sig`
+  - `public-key.pem`
+- Incremental update:
+  - `replace` from archive
+  - `reuse` from current deployment
+  - `delete` skip file in target deployment
+- Rollback:
+  - snapshot metadata is written before apply
+  - automatic rollback on apply failure
+  - manual rollback via command
+
+## OOBE and Splash
+
+- OOBE is independent from splash.
+- OOBE shows only:
+  - welcome text: `欢迎使用阑山桌面`
+  - arrow button for continue
+- Splash shows only:
+  - app name: `阑山桌面`
+
+## Extensibility
+
+- `IOobeStep` for future multi-step OOBE
+- `ISplashStageReporter` for future startup progress visualization
+
+## Compatibility Addendum
+
+- The current production OOBE state format is a per-user JSON file at `%LOCALAPPDATA%\LanMountainDesktop\.launcher\state\oobe-state.json`.
+- `first_run_completed` remains legacy compatibility data only.
+- Same-user reinstall or upgrade should not re-enter OOBE.

.trae/specs/launcher-upgrade/tasks.md

@@ -0,0 +1,12 @@
+# Launcher Upgrade Tasks
+
+- [x] Convert `LanMountainDesktop.Launcher` to Avalonia launcher entry.
+- [x] Add OOBE window with first-run marker handling.
+- [x] Add splash window for every startup.
+- [x] Implement unified command parsing with default `launch`.
+- [x] Keep legacy plugin install args compatibility.
+- [x] Add plugin pending upgrade queue processing.
+- [x] Implement incremental update apply with signed file map.
+- [x] Implement snapshot-based rollback and manual rollback command.
+- [x] Add update check/download/apply/rollback CLI commands.
+- [x] Add launcher spec files under `.trae/specs/launcher-upgrade/`.

.trae/specs/pdc-incremental-migration/checklist.md

@@ -0,0 +1,13 @@
+# Checklist
+
+- [ ] `release.yml` includes PDCC publish flow and does not invoke Velopack.
+- [ ] `release.yml` uploads app payload artifacts for PDCC.
+- [ ] S3 output path is rooted at `lanmountain/update/` (no system version prefix).
+- [ ] S3 has `repo/`, `meta/`, and `installers/` outputs after a release run.
+- [ ] Host update source default is `stcn` and old `pdc` values are auto-normalized.
+- [ ] Host can persist PDC payload into launcher incoming directory.
+- [ ] Launcher can apply PDC FileMap payload with signature/hash verification.
+- [ ] Legacy signed `files.json + update.zip` path still works as compatibility fallback.
+- [ ] CI run attached proving all release matrix jobs pass.
+- [ ] N-1 -> N incremental update verified on Windows x64/x86 and Linux x64.
+- [ ] Rollback verification report attached.

.trae/specs/pdc-incremental-migration/spec.md

@@ -0,0 +1,44 @@
+# PDC Incremental Update Migration
+
+## Goal
+
+Replace VeloPack-based incremental packaging with a unified PDC FileMap + object-repo pipeline, while keeping Launcher installation, rollback, and update orchestration ownership unchanged.
+
+## Stage 1 (Completed)
+
+- Release workflow removed VeloPack-based release packaging.
+- Signed FileMap path was restored as an interim release mechanism.
+- Host/Launcher fallback behavior stayed compatible with `files.json + files.json.sig + update.zip`.
+
+## Stage 2 (Current Implementation Target)
+
+- Move release publishing to PDCC + `phainon.yml` (ClassIsland-style).
+- Promote PDC-distributed FileMap/object-repo as the primary incremental path.
+- Keep GitHub Release installers and metadata as parallel distribution.
+- Keep Launcher state machine ownership (`.current/.partial/.destroy` + snapshots).
+- Update source defaults to `stcn` (S3/PDC), with GitHub fallback.
+- S3 object root is fixed to `lanmountain/update/` with no update-system version prefix.
+
+Expected S3 layout:
+  - `lanmountain/update/repo/<hash-prefix>/<hash-object>`
+  - `lanmountain/update/meta/channels/<channel>/<subchannel>/latest.json`
+  - `lanmountain/update/meta/distributions/<distributionId>/*.json`
+  - `lanmountain/update/installers/<platform>/<arch>/*`
+
+## Acceptance
+
+- `release.yml` includes PDCC publish steps and no Velopack steps.
+- Release jobs keep building installers for Windows x64/x86, Linux x64, and macOS.
+- PDC metadata + FileMap + object repo are published under `lanmountain/update/`.
+- Host can consume PDC payload (`stcn` source) and fallback to GitHub when unavailable.
+- Launcher can apply both:
+  - legacy signed `files.json + update.zip`
+  - PDC FileMap object-repo payload.
+- Rollback semantics remain unchanged.
+
+## Deprecated Notes
+
+- The following interim outputs are compatibility-only (not the long-term primary path):
+  - `files-windows-x64.json` / `.sig` / `update-windows-x64.zip`
+  - `files-windows-x86.json` / `.sig` / `update-windows-x86.zip`
+  - `files-linux-x64.json` / `.sig` / `update-linux-x64.zip`

.trae/specs/pdc-incremental-migration/tasks.md

@@ -0,0 +1,15 @@
+# Tasks
+
+- [x] Remove VeloPack packaging from release workflow.
+- [x] Keep signed FileMap path as interim compatibility fallback.
+- [x] Remove launcher/runtime Velopack branching.
+- [ ] Add `phainon.yml` for PDCC publish configuration.
+- [ ] Add PDCC installation + publish steps in `release.yml`.
+- [ ] Upload app payload artifacts for PDCC consumption in release build jobs.
+- [ ] Publish PDC metadata + object repo to S3 path root `lanmountain/update/`.
+- [ ] Mirror installers to `lanmountain/update/installers/<platform>/<arch>/`.
+- [ ] Replace update source canonical value with `stcn` (keep legacy `pdc` compatibility).
+- [ ] Add PDC payload model into host update check result.
+- [ ] Add host download path for PDC payload (`pdc-filemap.json` + signature + metadata).
+- [ ] Add launcher PDC FileMap apply path with rollback-compatible semantics.
+- [ ] Keep old `files.json + update.zip` path behind compatibility fallback.

.trae/specs/plugin-process-isolation/checklist.md

@@ -0,0 +1,12 @@
+# Checklist
+
+- [x] `plugin.json` 缺省时仍默认为 `in-proc`
+- [x] 非法 `runtime.mode` 会给出清晰错误
+- [x] SDK 中已有 Worker 入口和隔离运行模式的公共接口
+- [x] IPC 契约已拆到独立工程，且不引用 Avalonia
+- [x] IPC 封装层已集中环境变量、启动参数和通知路由常量
+- [x] 架构文档已写明一期 `isolated-background`、二期 `isolated-window`
+- [x] 架构文档已写明 `IPluginExportRegistry` / `IPluginMessageBus` 不再作为隔离插件主边界
+- [x] 文档已写明 ClassIsland 的借鉴点与取舍
+- [ ] Host 在 Worker 崩溃时仅降级插件且不中断主程序
+- [ ] `isolated-background` 的组件、编辑器、设置页完成真实 IPC 回路

.trae/specs/plugin-process-isolation/spec.md

@@ -0,0 +1,41 @@
+# Plugin Process Isolation
+
+## Why
+
+现有插件体系仍是“同进程 + AssemblyLoadContext 隔离”，无法阻止插件 fatal crash 拖垮 Host，也无法阻止插件直接访问 Host 进程内对象和内存。
+
+## What Changes
+
+- 增加插件运行模式概念：`in-proc`、`isolated-background`、`isolated-window`
+- 一期落地 `isolated-background`
+- 新建独立 IPC 契约包和 IPC 封装包
+- 在 `PluginSdk` 中新增 Worker 入口与 `runtime.mode`
+- 明确隔离模式下不再兼容对象实例共享型 API
+- 新增正式架构文档说明 UI 方案、迁移策略、残余风险和 ClassIsland 借鉴
+
+## Impact
+
+- `LanMountainDesktop.PluginSdk/`
+- `LanMountainDesktop.PluginTemplate/`
+- 新增 `LanMountainDesktop.PluginIsolation.Contracts/`
+- 新增 `LanMountainDesktop.PluginIsolation.Ipc/`
+- `docs/ARCHITECTURE.md`
+- `docs/PLUGIN_PROCESS_ISOLATION_ARCHITECTURE.md`
+
+## Requirements
+
+### Requirement 1
+
+宿主必须同时支持存量 `in-proc` 插件与未来的隔离插件，不得以本次改造打断旧插件加载。
+
+### Requirement 2
+
+隔离插件的 Host/Worker 通信必须基于显式 IPC 路由和 DTO，而不是 Host 服务对象实例共享。
+
+### Requirement 3
+
+一期必须把后台逻辑隔离为独立 Worker 进程，并显式记录 Host UI 壳层的残余风险。
+
+### Requirement 4
+
+仓库文档必须把 ClassIsland IPC 的借鉴点和不照搬的部分写清楚，避免后续实现阶段误把插件协议做成远程对象模型。

.trae/specs/plugin-process-isolation/tasks.md

@@ -0,0 +1,12 @@
+# Tasks
+
+- [x] 梳理现有插件运行时、组件注册、设置页和共享对象边界
+- [x] 形成插件进程隔离架构文档
+- [x] 在 `.trae/specs/plugin-process-isolation/` 下补齐 spec、tasks、checklist
+- [x] 在 `PluginSdk` 中增加 `runtime.mode`、Worker 入口接口和运行模式枚举
+- [x] 新建 `LanMountainDesktop.PluginIsolation.Contracts`，沉淀纯 DTO、路由常量、错误码与 JSON context
+- [x] 新建 `LanMountainDesktop.PluginIsolation.Ipc`，沉淀 ClassIsland 风格的 IPC 包装外壳
+- [x] 更新插件模板 `plugin.json`，让新插件默认显式声明 `in-proc`
+- [ ] 在 Host 侧接入真实 Worker 进程拉起与 dotnetCampus.Ipc 传输绑定
+- [ ] 为 `isolated-background` 构建 Host UI 壳层适配器
+- [ ] 为故障、心跳、降级与恢复补齐端到端测试

.trae/specs/velopack-update-integration/checklist.md

@@ -0,0 +1,5 @@
+# Checklist (Deprecated)
+
+- [x] Spec marked as deprecated.
+- [x] Active implementation ownership moved to `pdc-incremental-migration`.
+- [x] No release workflow dependency remains on VeloPack.

.trae/specs/velopack-update-integration/spec.md

@@ -0,0 +1,15 @@
+# VeloPack Update Integration (Deprecated)
+
+## Status
+
+This spec is deprecated and superseded by `.trae/specs/pdc-incremental-migration/`.
+
+## Deprecation Reason
+
+- VeloPack native package generation introduced unstable release blocking (version format coupling and platform divergence).
+- The project has switched back to signed FileMap incremental assets as the primary update path.
+- Launcher remains the update installer/rollback authority; packaging and distribution are being migrated to PDC/S3-compatible flows.
+
+## Migration Note
+
+Use `.trae/specs/pdc-incremental-migration/spec.md` as the active authority for incremental update implementation and acceptance.

.trae/specs/velopack-update-integration/tasks.md

@@ -0,0 +1,6 @@
+# Tasks (Deprecated)
+
+- [x] Mark VeloPack integration spec as deprecated.
+- [x] Remove VeloPack runtime branches from launcher/host update path.
+- [x] Remove VeloPack release workflow packaging steps.
+- [ ] Keep archive for historical context only (no new implementation tasks here).

.trae/specs/window-slide-transition/checklist.md

@@ -0,0 +1,24 @@
+* [x] AppSettingsSnapshot 包含 EnableSlideTransition 字段且默认为 false
+
+* [x] DesktopPage 拥有名为 DesktopPageSlideTransform 的 TranslateTransform
+
+* [x] DesktopPage.Transitions 包含 Opacity 和 TranslateTransform.X 两个 DoubleTransition
+
+* [x] 点击"回到 Windows"时播放退场动画（Opacity 淡出 或 Opacity+滑动），动画完成后再最小化
+
+* [x] 从最小化恢复时 DesktopPage 先以 Opacity=0 遮住 Normal 中间态，FullScreen 生效后播放入场动画
+
+* [x] 动画期间 DesktopPage.IsHitTestVisible 为 false，动画完成后恢复
+
+* [x] 动画期间 OnWindowPropertyChanged 不执行强制全屏纠正
+
+* [x] 快速连续操作不会导致动画冲突
+
+* [x] GeneralSettingsPage 在 Windows 平台显示"滑入滑出过渡效果"开关
+
+* [x] GeneralSettingsPage 在非 Windows 平台不显示该开关
+
+* [x] EnableSlideTransition 设置持久化到 AppSettingsSnapshot 且立即生效
+
+* [x] dotnet build 无编译错误
+

.trae/specs/window-slide-transition/spec.md

@@ -0,0 +1,138 @@
+# 窗口过渡动画 Spec
+
+## Why
+
+当前全屏窗口在"回到 Windows"（最小化）和"恢复应用"时存在严重的视觉问题：
+1. 恢复时经历 `Minimized → Normal → FullScreen` 两步跳变，用户会短暂看到无框小窗口
+2. 状态切换无任何过渡动画，体验生硬
+3. `OnWindowPropertyChanged` 使用 `Dispatcher.UIThread.Post` 延迟纠正，进一步延长了 Normal 中间态的可见时间
+
+## What Changes
+
+- 在 `MainWindow.axaml` 的 `DesktopPage` 上添加 `TranslateTransform` 和 `TranslateTransform.X` 过渡动画
+- 修改 `MainWindow.axaml.cs` 的 `OnMinimizeClick`，实现退场动画（滑出/淡出 → 最小化）
+- 修改 `App.axaml.cs` 的 `RestoreOrCreateMainWindow`，实现入场动画（全屏 → 滑入/淡入）
+- 修改 `MainWindow.axaml.cs` 的 `OnWindowPropertyChanged`，在动画期间暂停强制全屏逻辑
+- 在 `AppSettingsSnapshot` 中添加 `EnableSlideTransition` 设置项（默认关闭）
+- 在 `GeneralSettingsPageViewModel` 中添加对应 ViewModel 属性
+- 在 `GeneralSettingsPage.axaml` 中添加开关 UI（仅 Windows 平台显示）
+- 添加平台检测逻辑：Windows 且开启设置时使用滑入滑出，其他情况使用 Opacity 淡入淡出
+
+## Impact
+
+- Affected specs: 窗口生命周期过渡动画
+- Affected code:
+  - `LanMountainDesktop/Views/MainWindow.axaml` - DesktopPage 添加 TranslateTransform
+  - `LanMountainDesktop/Views/MainWindow.axaml.cs` - OnMinimizeClick、OnWindowPropertyChanged、新增动画方法
+  - `LanMountainDesktop/App.axaml.cs` - RestoreOrCreateMainWindow、OnMainWindowPropertyChanged
+  - `LanMountainDesktop/Models/AppSettingsSnapshot.cs` - 新增 EnableSlideTransition 字段
+  - `LanMountainDesktop/ViewModels/SettingsViewModels.cs` - GeneralSettingsPageViewModel 新增属性
+  - `LanMountainDesktop/Views/SettingsPages/GeneralSettingsPage.axaml` - 新增开关 UI
+
+---
+
+## ADDED Requirements
+
+### Requirement: 窗口退场过渡动画
+
+系统 SHALL 在主窗口最小化/隐藏时播放退场过渡动画，消除窗口状态跳变的视觉闪烁。
+
+#### Scenario: Opacity 淡出退场（所有平台默认）
+- **WHEN** 用户点击"回到 Windows"或触发最小化
+- **THEN** 系统将 `DesktopPage.Opacity` 设为 0，触发淡出动画
+- **AND THEN** 动画完成后执行 `WindowState = Minimized`
+- **AND THEN** 最小化完成后重置 `DesktopPage.Opacity = 1`（窗口已不可见）
+
+#### Scenario: 滑出退场（Windows + 开启设置）
+- **WHEN** 用户点击"回到 Windows"且运行在 Windows 平台且已开启滑入滑出设置
+- **THEN** 系统同时将 `DesktopPage.Opacity` 设为 0 且 `DesktopPageSlideTransform.X` 设为屏幕宽度
+- **AND THEN** 动画完成后执行 `WindowState = Minimized`
+- **AND THEN** 最小化完成后重置 `DesktopPageSlideTransform.X = 0` 和 `DesktopPage.Opacity = 1`
+
+### Requirement: 窗口入场过渡动画
+
+系统 SHALL 在主窗口恢复时播放入场过渡动画，消除 Normal 中间态的视觉闪烁。
+
+#### Scenario: Opacity 淡入入场（所有平台默认）
+- **WHEN** 主窗口从最小化/隐藏状态恢复
+- **THEN** 系统先将 `DesktopPage.Opacity` 设为 0（遮住 Normal 中间态）
+- **AND THEN** 完成 `Minimized → Normal → FullScreen` 状态切换
+- **AND THEN** 等 FullScreen 状态生效后将 `DesktopPage.Opacity` 设为 1，触发淡入动画
+
+#### Scenario: 滑入入场（Windows + 开启设置）
+- **WHEN** 主窗口从最小化/隐藏状态恢复且运行在 Windows 平台且已开启滑入滑出设置
+- **THEN** 系统先将 `DesktopPage.Opacity` 设为 0 且 `DesktopPageSlideTransform.X` 设为屏幕宽度
+- **AND THEN** 完成 `Minimized → Normal → FullScreen` 状态切换
+- **AND THEN** 等 FullScreen 状态生效后同时将 `DesktopPage.Opacity` 设为 1 且 `DesktopPageSlideTransform.X` 设为 0，触发滑入+淡入组合动画
+
+### Requirement: 动画期间交互保护
+
+系统 SHALL 在过渡动画播放期间防止用户交互和状态冲突。
+
+#### Scenario: 动画期间禁止交互
+- **WHEN** 退场或入场动画正在播放
+- **THEN** `DesktopPage.IsHitTestVisible` 设为 `false`
+- **AND THEN** 动画完成后恢复为 `true`
+
+#### Scenario: 动画期间暂停强制全屏
+- **WHEN** 入场动画正在播放且窗口临时处于 Normal 状态
+- **THEN** `OnWindowPropertyChanged` 不执行强制全屏纠正
+- **AND THEN** 入场动画完成后恢复正常强制全屏逻辑
+
+#### Scenario: 防止快速连续操作
+- **WHEN** 用户在动画播放期间再次触发最小化或恢复
+- **THEN** 系统忽略重复操作，避免动画冲突
+
+### Requirement: 滑入滑出设置项
+
+系统 SHALL 在基本设置页面提供"滑入滑出过渡效果"开关，仅 Windows 平台可见。
+
+#### Scenario: 设置项可见性
+- **WHEN** 用户在 Windows 平台打开基本设置页面
+- **THEN** 显示"滑入滑出过渡效果"开关
+- **WHEN** 用户在非 Windows 平台打开基本设置页面
+- **THEN** 不显示该开关
+
+#### Scenario: 设置项默认值
+- **WHEN** 用户首次安装应用
+- **THEN** `EnableSlideTransition` 默认为 `false`
+
+#### Scenario: 设置持久化
+- **WHEN** 用户切换"滑入滑出过渡效果"开关
+- **THEN** 设置值立即持久化到 `AppSettingsSnapshot.EnableSlideTransition`
+- **AND THEN** 下次窗口过渡时立即生效，无需重启
+
+### Requirement: DesktopPage TranslateTransform 声明
+
+系统 SHALL 在 `DesktopPage` 上声明 `TranslateTransform` 和对应的过渡动画。
+
+#### Scenario: XAML 声明
+- **WHEN** MainWindow 初始化
+- **THEN** `DesktopPage` 拥有名为 `DesktopPageSlideTransform` 的 `TranslateTransform`
+- **AND THEN** `DesktopPage.Transitions` 包含 `Opacity` 和 `TranslateTransform.X` 两个过渡
+- **AND THEN** 过渡时长使用 `FluttermotionToken.Duration.Page`（320ms）和 `FluttermotionToken.Duration.Intro`（400ms）
+- **AND THEN** 缓动函数使用 `0.05,0.75,0.10,1.00`（DecelerateBezier）
+
+## MODIFIED Requirements
+
+### Requirement: OnMinimizeClick 行为
+
+**当前**: 直接设置 `WindowState = WindowState.Minimized`，无动画
+
+**修改后**: 先播放退场动画，动画完成后再设置 `WindowState = WindowState.Minimized`
+
+### Requirement: RestoreOrCreateMainWindow 行为
+
+**当前**: `Show() → Normal → FullScreen`，无过渡动画，用户可见 Normal 中间态
+
+**修改后**: 先将 `DesktopPage` 设为不可见（Opacity=0 + 可选滑出位），再执行状态切换，最后播放入场动画
+
+### Requirement: OnWindowPropertyChanged 强制全屏逻辑
+
+**当前**: 任何非 Minimized/FullScreen 状态立即纠正为 FullScreen
+
+**修改后**: 动画期间允许临时 Normal 状态存在，动画完成后恢复强制全屏逻辑
+
+## REMOVED Requirements
+
+无移除的需求。

.trae/specs/window-slide-transition/tasks.md

@@ -0,0 +1,52 @@
+# Tasks
+
+- [x] Task 1: 在 `AppSettingsSnapshot` 中添加 `EnableSlideTransition` 字段
+  - [x] 添加 `public bool EnableSlideTransition { get; set; } = false;`
+  - [x] 在 `Clone()` 方法中无需特殊处理（bool 是值类型）
+
+- [x] Task 2: 在 `MainWindow.axaml` 的 `DesktopPage` 上添加 `TranslateTransform` 和过渡动画
+  - [x] 添加 `<TranslateTransform />`
+  - [x] 在 `Grid.Transitions` 中添加 `TranslateTransform.X` 的 `DoubleTransition`，使用 `FluttermotionToken.Duration.Intro` 和 DecelerateBezier 缓动
+
+- [x] Task 3: 在 `MainWindow.axaml.cs` 中实现退场动画逻辑
+  - [x] 添加 `_isSlideAnimationActive` 标志位
+  - [x] 修改 `OnMinimizeClick`，调用新的 `SlideOutAndMinimizeAsync` 方法
+  - [x] 实现 `SlideOutAndMinimizeAsync`：读取设置 → 播放退场动画（Opacity + 可选滑动）→ 等动画完成 → 最小化 → 重置位置
+  - [x] 动画期间设置 `DesktopPage.IsHitTestVisible = false`
+
+- [x] Task 4: 在 `MainWindow.axaml.cs` 中实现入场动画逻辑
+  - [x] 添加 `public void PrepareEnterAnimation()` 方法：禁用过渡 → 设置初始位置（Opacity=0, X=屏幕宽度或0）→ 重新启用过渡
+  - [x] 添加 `public void PlayEnterAnimation()` 方法：触发入场动画（Opacity=1, X=0）
+  - [x] 添加 `private bool IsSlideTransitionEnabled()` 方法，从设置中读取
+
+- [x] Task 5: 修改 `App.axaml.cs` 的 `RestoreOrCreateMainWindow`
+  - [x] 在窗口状态切换前调用 `mainWindow.PrepareEnterAnimation()`
+  - [x] 在 FullScreen 状态生效后调用 `mainWindow.PlayEnterAnimation()`
+
+- [x] Task 6: 修改 `MainWindow.axaml.cs` 的 `OnWindowPropertyChanged`
+  - [x] 当 `_isSlideAnimationActive` 为 true 时跳过强制全屏逻辑
+
+- [x] Task 7: 在 `GeneralSettingsPageViewModel` 中添加 `EnableSlideTransition` 属性
+  - [x] 添加 `[ObservableProperty] private bool _enableSlideTransition;`
+  - [x] 添加 `OnEnableSlideTransitionChanged` 持久化方法
+  - [x] 在构造函数和 `OnSettingsChanged` 中加载/同步该设置
+  - [x] 添加 `IsSlideTransitionAvailable` 平台检测属性
+
+- [x] Task 8: 在 `GeneralSettingsPage.axaml` 中添加"滑入滑出过渡效果"开关
+  - [x] 在"运行时设置"分组中添加 `SettingsExpander`
+  - [x] 仅 Windows 平台显示（使用 `IsVisible` 绑定到 `IsSlideTransitionAvailable`）
+  - [x] 图标使用 `ArrowRight`
+
+- [x] Task 9: 构建验证
+  - [x] 执行 `dotnet build` 确保无编译错误
+
+# Task Dependencies
+
+- [Task 2] depends on [Task 1]
+- [Task 3] depends on [Task 1, Task 2]
+- [Task 4] depends on [Task 1, Task 2]
+- [Task 5] depends on [Task 4]
+- [Task 6] depends on [Task 3]
+- [Task 7] depends on [Task 1]
+- [Task 8] depends on [Task 7]
+- [Task 9] depends on [Task 3, Task 4, Task 5, Task 6, Task 7, Task 8]

AGENTS.md

@@ -62,7 +62,10 @@ dotnet test LanMountainDesktop.slnx -c Debug
 ### UI
 
 - 主题、资源和视觉语义优先遵守 `docs/VISUAL_SPEC.md` 与 `docs/CORNER_RADIUS_SPEC.md`
-- **组件圆角**：所有内置与插件组件的根边框必须使用 `{DynamicResource DesignCornerRadiusComponent}` 资源。
+- **圆角规范 (AI 强制建议)**：
+    - **桌面组件根容器**：必须且仅能使用 `{DynamicResource DesignCornerRadiusComponent}`。
+    - **内部元素**：必须根据嵌套层级使用 `DesignCornerRadiusSm/Md/Lg` 等 Token，严禁硬编码像素值。
+    - **禁止修改系数**：严禁在圆角资源上乘以任何 `scale` 变量，圆角现在由全局样式固定控制。
 - 设置页相关改动通常同时落在 `Views/`、`ViewModels/`、`Services/` 和 `.trae/specs/`
 - UI 启动与窗口生命周期主线在 `Program.cs` 和 `App.axaml.cs`
 

CHANGELOG.md

@@ -0,0 +1,237 @@
+# 更新日志 / Changelog
+
+## [0.8.4](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.4) - 2026-04-12
+
+### 新增 (Added)
+
+- ✨ **全新淡入淡出动画系统**: 引入了一套全新的淡入淡出动画效果
+  - 提升界面切换和元素显示的视觉流畅度
+  - 为用户带来更加自然优雅的交互体验
+
+### 变更 (Changed)
+
+- ♻️ **SDK 更新**: 更新插件 SDK，优化插件开发接口和兼容性
+- 🎨 **网速显示组件优化**: 优化了网速显示组件的显示效果
+  - 改进数据展示方式，提升可读性
+  - 优化视觉样式，与整体设计语言更加协调
+
+### 修复 (Fixed)
+
+- 无
+
+### 移除 (Removed)
+
+- 无
+
+***
+
+## [0.8.3.5](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.5) - 2026-04-12
+
+### 新增 (Added)
+
+- 无
+
+### 变更 (Changed)
+
+- ✨ **插件设置页面支持 View 展示**: 插件设置页面现在支持使用 View 进行展示
+  - 插件开发者可以通过 View 自定义设置页面的 UI 和交互
+  - 提供更灵活的设置页面展示方式，提升插件用户体验
+  - 兼容原有的设置方式，平滑过渡
+- 🔧 **三指滑动与融合桌面功能开关位置调整**: 将三指滑动与融合桌面功能开关移动到了开发者设置界面
+  - 优化设置页面结构，将高级功能集中管理
+  - 普通用户界面更加简洁，开发者可在已有的开发者设置界面中访问相关设置
+
+### 修复 (Fixed)
+
+- 🐛 **快捷方式组件透明问题**: 修复了快捷方式组件无法正常透明的问题
+  - 问题原因: 组件背景透明属性设置异常或渲染层级问题
+  - 修复方案: 修正透明属性配置，确保快捷方式组件背景透明效果正常显示
+- 🐛 **插件无法正常升级问题**: 修复了插件无法正常升级的问题
+  - 问题原因: 插件升级流程中存在异常，导致升级操作失败或中断
+  - 修复方案: 修复插件升级逻辑，确保插件可以正常检测、下载和安装更新
+- 🐛 **开发者设置项持久化问题**: 修复了开发者设置项不能正确持久化的问题
+  - 问题原因: 开发者设置项的保存或读取逻辑存在缺陷，导致设置无法正确保存或恢复
+  - 修复方案: 修复设置持久化逻辑，确保开发者设置项能够正确保存并在重启后恢复
+
+### 移除 (Removed)
+
+- 🗑️ **不附带 .NET 10 依赖的轻量版安装包**: 移除了不附带 .NET 10 依赖的轻量版安装包
+  - 简化版本发布和维护流程，统一提供完整依赖的安装包
+  - 用户无需担心 .NET 运行时环境，安装后即可直接使用
+
+***
+
+## [0.8.3.4](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.4) - 2026-04-12
+
+### 新增 (Added)
+
+- 无
+
+### 变更 (Changed)
+
+- ♻️ **插件 SDK 更新**: 更新插件 SDK，优化插件开发接口和兼容性
+
+### 修复 (Fixed)
+
+- 🐛 **轻量版 .NET 依赖问题（实验性）**: 实验性修复了轻量版在 .NET 环境下的依赖问题
+  - 问题原因: 轻量版与 .NET 的依赖兼容性存在冲突
+  - 修复方案: 调整依赖配置，提升兼容性（实验性修复，持续观察中）
+
+### 移除 (Removed)
+
+- 无
+
+***
+
+## [0.8.3.3](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.3) - 2026-04-12
+
+### 新增 (Added)
+
+- ✨ **便签组件**: 全新便签组件上线，支持 Markdown 语法
+  - 支持丰富的 Markdown 格式：标题、列表、加粗、斜体、代码块等
+  - 便签内容自动保存，方便记录和管理日常备忘。丰富信息展示途径，让作业布置也可在阑山桌面完成。
+- ✨ **白板主题自适应笔色**: 白板功能新增主题自适应笔色支持
+  - 根据当前主题自动调整画笔颜色，确保在不同主题下都有良好的书写体验
+  - 深色主题下自动切换为浅色笔迹，浅色主题下使用深色笔迹
+
+### 变更 (Changed)
+
+- 🎨 **融合桌面设置组件库样式更新**: 优化融合桌面设置页面的组件库样式
+  - 提升视觉一致性和用户体验
+  - 统一组件风格，与整体设计语言保持协调
+
+### 修复 (Fixed)
+
+- 🐛 **白板无法使用问题**: 修复了白板功能无法正常使用的问题
+  - 问题原因: 相关依赖或初始化逻辑异常导致白板功能失效
+  - 修复方案: 修复了白板的依赖加载和初始化流程，恢复正常使用
+- 🐛 **央官网新闻组件显示问题**: 修复了央官网新闻组件的显示异常
+  - 优化组件渲染逻辑，确保新闻内容正确展示
+- 🐛 **课程表组件显示问题**: 修复了课程表组件的显示异常
+  - 优化组件布局和渲染，确保课程信息正确显示
+- 🐛 **轻量版 .NET 10 依赖问题（实验性）**: 实验性修复了轻量版在 .NET 10 环境下的依赖问题
+  - 问题原因: 轻量版与 .NET 10 的依赖兼容性存在冲突
+  - 修复方案: 调整依赖配置，提升与 .NET 10 的兼容性（实验性修复，持续观察中）
+
+### 移除 (Removed)
+
+- 无
+
+***
+
+## [0.8.3.2](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.2) - 2026-04-09
+
+### 新增 (Added)
+
+- ✨ **应用启动台图标卡片显示选项**: 新增应用启动台图标卡片显示设置
+  - 用户可在设置中选择是否显示应用图标的专属卡片背景
+  - 关闭后仅显示应用图标本身，更加简洁
+  - 支持动态切换，实时预览效果
+
+### 变更 (Changed)
+
+- 无
+
+### 修复 (Fixed)
+
+- 🐛 **应用启动台文件夹应用数量限制**: 修复了应用启动台文件夹无法查看超过12个应用的问题
+  - 问题原因: 文件夹弹窗未实现滚动功能，应用列表超出显示区域后被截断
+  - 修复方案: 为文件夹内容区域添加滚动支持，允许用户滚动查看所有应用
+- 🐛 **电源菜单重启导致关机问题**: 修复了点击电源菜单"重启"选项却触发关机的问题
+  - 问题原因: `SlideToShutDown.exe` 仅支持关机操作，不支持重启，错误地将其用于重启功能
+  - 修复方案: 重启操作改为使用标准的二次确认对话框（所有平台统一），仅关机操作使用 SlideToShutDown 滑动界面
+- 🐛 **课表组件字体显示问题**: 修复了日间模式下课表组件字体颜色与背景色相近导致看不清的问题
+  - 问题原因: 主题切换时增量更新逻辑未同步更新文字颜色
+  - 修复方案: 在 `IncrementalUpdateItems()` 方法中同步更新课程项的文字颜色
+
+### 移除 (Removed)
+
+- 🗑️ **更新页面重复标题**: 移除了更新页面中重复的更新标题，优化页面布局
+
+***
+
+## [0.8.3.1](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.1) - 2026-04-08
+
+### 新增 (Added)
+
+- ✨ **快捷方式组件**: 新增快捷方式组件,可在阑山桌面内便捷打开系统应用与文件
+  - 支持创建快捷方式,统一管理应用和文件
+  - 提供单击打开和双击打开两种交互模式
+  - 支持配置是否显示背景
+- 📝 初始化更新日志文档,为后续版本发布建立基础
+
+### 变更 (Changed)
+
+- 无
+
+### 修复 (Fixed)
+
+- 无
+
+### 移除 (Removed)
+
+- 无
+
+***
+
+所有重要的更改都将记录在此文件中。
+
+格式基于 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.0.0/),
+并且本项目遵循 [语义化版本](https://semver.org/lang/zh-CN/)。
+
+***
+
+## \[格式示例]
+
+### 新增 (Added)
+
+- 待发布的新功能
+
+### 变更 (Changed)
+
+- 待发布的变更
+
+### 修复 (Fixed)
+
+- 待发布的修复
+
+### 移除 (Removed)
+
+- 待发布的移除项
+
+***
+
+## 版本说明
+
+### 版本号规则
+
+本项目采用语义化版本号 `MAJOR.MINOR.PATCH.BUILD`:
+
+- **MAJOR (主版本号)**: 不兼容的 API 修改
+- **MINOR (次版本号)**: 向下兼容的功能性新增
+- **PATCH (修订号)**: 向下兼容的问题修正
+- **BUILD (构建号)**: 内部构建版本,用于区分同一 PATCH 版本的不同构建
+
+### 分类说明
+
+- **新增 (Added)**: 新功能、新特性
+- **变更 (Changed)**: 对现有功能的变更
+- **修复 (Fixed)**: Bug 修复
+- **移除 (Removed)**: 移除的功能或特性
+
+### 图例
+
+- 🎉 **重大更新**: 重要功能或里程碑
+- ✨ **新功能**: 新增功能特性
+- 🐛 **Bug修复**: 问题修复
+- 🔧 **配置**: 配置相关变更
+- 📝 **文档**: 文档更新
+- 🎨 **样式**: UI/UX 改进
+- ♻️ **重构**: 代码重构
+- ⚡ **性能**: 性能优化
+- 🔒 **安全**: 安全相关
+- 🌐 **国际化**: 国际化/本地化
+
+***
+
+## 链接

Directory.Build.props

@@ -4,5 +4,6 @@
     <TargetFramework Condition="'$(TargetFramework)' == ''">net10.0</TargetFramework>
     <Nullable Condition="'$(Nullable)' == ''">enable</Nullable>
     <ImplicitUsings Condition="'$(ImplicitUsings)' == ''">enable</ImplicitUsings>
+    <ServerGarbageCollection>true</ServerGarbageCollection>
   </PropertyGroup>
 </Project>

LanMountainDesktop.Appearance/AppearanceCornerRadiusTokenFactory.cs

@@ -6,23 +6,48 @@ namespace LanMountainDesktop.Appearance;
 
 public static class AppearanceCornerRadiusTokenFactory
 {
-    public static AppearanceCornerRadiusTokens Create(double scale)
+    public static AppearanceCornerRadiusTokens Create(string style)
     {
-        var normalizedScale = GlobalAppearanceSettings.NormalizeCornerRadiusScale(scale);
-        return new AppearanceCornerRadiusTokens(
-            Radius(6, normalizedScale),
-            Radius(12, normalizedScale),
-            Radius(14, normalizedScale),
-            Radius(20, normalizedScale),
-            Radius(28, normalizedScale),
-            Radius(32, normalizedScale),
-            Radius(36, normalizedScale),
-            Radius(18, normalizedScale));
-    }
-
-    private static CornerRadius Radius(double value, double scale)
-    {
-        var scaled = Math.Round(value * scale * 2, MidpointRounding.AwayFromZero) / 2d;
-        return new CornerRadius(scaled);
+        var normalized = GlobalAppearanceSettings.NormalizeCornerRadiusStyle(style);
+        return normalized switch
+        {
+            GlobalAppearanceSettings.CornerRadiusStyleSharp => new AppearanceCornerRadiusTokens(
+                Micro: new CornerRadius(4),
+                Xs: new CornerRadius(8),
+                Sm: new CornerRadius(10),
+                Md: new CornerRadius(14),
+                Lg: new CornerRadius(20),
+                Xl: new CornerRadius(24),
+                Island: new CornerRadius(28),
+                Component: new CornerRadius(20)),
+            GlobalAppearanceSettings.CornerRadiusStyleRounded => new AppearanceCornerRadiusTokens(
+                Micro: new CornerRadius(8),
+                Xs: new CornerRadius(14),
+                Sm: new CornerRadius(16),
+                Md: new CornerRadius(24),
+                Lg: new CornerRadius(32),
+                Xl: new CornerRadius(36),
+                Island: new CornerRadius(40),
+                Component: new CornerRadius(28)),
+            GlobalAppearanceSettings.CornerRadiusStyleOpen => new AppearanceCornerRadiusTokens(
+                Micro: new CornerRadius(10),
+                Xs: new CornerRadius(16),
+                Sm: new CornerRadius(20),
+                Md: new CornerRadius(28),
+                Lg: new CornerRadius(36),
+                Xl: new CornerRadius(40),
+                Island: new CornerRadius(44),
+                Component: new CornerRadius(32)),
+            // Balanced (default)
+            _ => new AppearanceCornerRadiusTokens(
+                Micro: new CornerRadius(6),
+                Xs: new CornerRadius(12),
+                Sm: new CornerRadius(14),
+                Md: new CornerRadius(20),
+                Lg: new CornerRadius(28),
+                Xl: new CornerRadius(32),
+                Island: new CornerRadius(36),
+                Component: new CornerRadius(24))
+        };
     }
 }

LanMountainDesktop.Host.Abstractions/ComponentChromeContext.cs

@@ -7,6 +7,5 @@ public sealed record ComponentChromeContext(
     string ComponentId,
     string? PlacementId,
     double CellSize,
-    double GlobalCornerRadiusScale,
     AppearanceCornerRadiusTokens CornerRadiusTokens,
     SettingsScope Scope = SettingsScope.App);

LanMountainDesktop.Launcher/App.axaml

@@ -0,0 +1,9 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:sty="using:FluentAvalonia.Styling"
+             x:Class="LanMountainDesktop.Launcher.App"
+             RequestedThemeVariant="Default">
+  <Application.Styles>
+    <sty:FluentAvaloniaTheme />
+  </Application.Styles>
+</Application>

LanMountainDesktop.Launcher/App.axaml.cs

@@ -0,0 +1,342 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Launcher.Views;
+
+namespace LanMountainDesktop.Launcher;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        Logger.Initialize();
+        var context = LauncherRuntimeContext.Current;
+        var execution = LauncherExecutionContext.Capture();
+        Logger.Info(
+            $"Launcher App initialize. Command='{context.Command}'; IsGuiMode={context.IsGuiCommand}; " +
+            $"IsPreview={context.IsPreviewCommand}; IsDebugMode={context.IsDebugMode}; " +
+            $"LaunchSource='{context.LaunchSource}'; IsElevated={execution.IsElevated}; " +
+            $"UserSid='{execution.UserSid ?? string.Empty}'; ExplicitAppRoot='{context.ExplicitAppRoot ?? "<none>"}'.");
+
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.ShutdownMode = ShutdownMode.OnExplicitShutdown;
+
+            var context = LauncherRuntimeContext.Current;
+            var execution = LauncherExecutionContext.Capture();
+            Logger.Info(
+                $"Framework initialization completed. Command='{context.Command}'; IsPreview={context.IsPreviewCommand}; " +
+                $"IsDebugMode={context.IsDebugMode}; LaunchSource='{context.LaunchSource}'; " +
+                $"IsElevated={execution.IsElevated}; UserSid='{execution.UserSid ?? string.Empty}'.");
+
+            if (HandlePreviewCommand(context, desktop))
+            {
+                base.OnFrameworkInitializationCompleted();
+                return;
+            }
+
+            if (string.Equals(context.Command, "apply-update", StringComparison.OrdinalIgnoreCase))
+            {
+                var updateWindow = new UpdateWindow();
+                updateWindow.Show();
+                _ = RunApplyUpdateWithWindowAsync(desktop, context, updateWindow);
+            }
+            else
+            {
+                var splashWindow = new SplashWindow();
+                splashWindow.Show();
+                _ = RunCoordinatorWithSplashAsync(desktop, context, splashWindow);
+            }
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+
+    private bool HandlePreviewCommand(CommandContext context, IClassicDesktopStyleApplicationLifetime desktop)
+    {
+        switch (context.Command.ToLowerInvariant())
+        {
+            case "preview-splash":
+            {
+                Logger.Info("Preview command: splash.");
+                var splashWindow = new SplashWindow();
+                splashWindow.SetDebugMode(true);
+                splashWindow.Show();
+                _ = SimulateSplashPreviewAsync(desktop, splashWindow);
+                return true;
+            }
+            case "preview-error":
+            {
+                Logger.Info("Preview command: error.");
+                var errorWindow = new ErrorWindow();
+                errorWindow.SetErrorMessage("[Preview] This is the launcher error window preview.");
+                errorWindow.Show();
+                _ = WaitForWindowCloseAsync(desktop, errorWindow);
+                return true;
+            }
+            case "preview-update":
+            {
+                Logger.Info("Preview command: update.");
+                var updateWindow = new UpdateWindow();
+                updateWindow.SetDebugMode(true);
+                updateWindow.Show();
+                _ = SimulateUpdatePreviewAsync(desktop, updateWindow);
+                return true;
+            }
+            case "preview-oobe":
+            {
+                Logger.Info("Preview command: oobe.");
+                var oobeWindow = new OobeWindow();
+                oobeWindow.Show();
+                _ = SimulateOobePreviewAsync(desktop, oobeWindow);
+                return true;
+            }
+            case "preview-debug":
+            {
+                Logger.Info("Preview command: debug window.");
+                var devDebugWindow = new DevDebugWindow();
+                devDebugWindow.Show();
+                return true;
+            }
+            default:
+                return false;
+        }
+    }
+
+    private async Task SimulateSplashPreviewAsync(IClassicDesktopStyleApplicationLifetime desktop, SplashWindow window)
+    {
+        var stages = new[] { "initializing", "update", "plugins", "launch", "ready" };
+        var messages = new[] { "Initializing...", "Checking updates...", "Checking plugins...", "Launching host...", "Ready" };
+        var reporter = (ISplashStageReporter)window;
+
+        for (var i = 0; i < stages.Length; i++)
+        {
+            reporter.Report(stages[i], messages[i]);
+            await Task.Delay(800).ConfigureAwait(false);
+        }
+
+        await Task.Delay(5000).ConfigureAwait(false);
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(0));
+    }
+
+    private async Task SimulateUpdatePreviewAsync(IClassicDesktopStyleApplicationLifetime desktop, UpdateWindow window)
+    {
+        var stages = new[] { "verify", "extract", "apply", "plugins", "cleanup" };
+
+        for (var i = 0; i < stages.Length; i++)
+        {
+            window.Report(stages[i], $"Processing {stages[i]}...", (i + 1) * 20);
+            await Task.Delay(600).ConfigureAwait(false);
+        }
+
+        window.ReportComplete(true, null);
+        await Task.Delay(3000).ConfigureAwait(false);
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(0));
+    }
+
+    private async Task SimulateOobePreviewAsync(IClassicDesktopStyleApplicationLifetime desktop, OobeWindow window)
+    {
+        try
+        {
+            await window.WaitForEnterAsync().ConfigureAwait(false);
+            Logger.Info("OOBE preview completed by user.");
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("OOBE preview failed.", ex);
+        }
+
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(0));
+    }
+
+    private async Task WaitForWindowCloseAsync(IClassicDesktopStyleApplicationLifetime desktop, Window window)
+    {
+        var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+        window.Closed += (_, _) => tcs.TrySetResult();
+        await tcs.Task.ConfigureAwait(false);
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(0));
+    }
+
+    private static async Task RunCoordinatorWithSplashAsync(
+        IClassicDesktopStyleApplicationLifetime desktop,
+        CommandContext context,
+        SplashWindow splashWindow)
+    {
+        LauncherResult result;
+
+        try
+        {
+            var appRoot = Commands.ResolveAppRoot(context);
+            Logger.Info(
+                $"Coordinator start. Command='{context.Command}'; AppRoot='{appRoot}'; " +
+                $"IsDebugMode={context.IsDebugMode}; LaunchSource='{context.LaunchSource}'; " +
+                $"ResultPath='{context.GetOption("result") ?? "<none>"}'.");
+
+            var deploymentLocator = new DeploymentLocator(appRoot);
+            var coordinator = new LauncherFlowCoordinator(
+                context,
+                deploymentLocator,
+                new OobeStateService(appRoot),
+                new UpdateEngineService(deploymentLocator),
+                new PluginInstallerService());
+
+            result = await coordinator.RunAsync(splashWindow).ConfigureAwait(false);
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Coordinator threw an unhandled exception.", ex);
+            result = new LauncherResult
+            {
+                Success = false,
+                Stage = "launch",
+                Code = "exception",
+                Message = $"Launcher failed: {ex.Message}",
+                ErrorMessage = ex.ToString()
+            };
+        }
+
+        Logger.Info($"Coordinator completed. Success={result.Success}; Stage='{result.Stage}'; Code='{result.Code}'.");
+        await WriteLauncherResultAsync(context, result).ConfigureAwait(false);
+
+        if (!result.Success &&
+            result.Code is not "host_not_found" &&
+            (string.Equals(result.Stage, "launch", StringComparison.OrdinalIgnoreCase) ||
+             string.Equals(result.Stage, "launchHost", StringComparison.OrdinalIgnoreCase)))
+        {
+            await ShowFailureWindowAsync(result).ConfigureAwait(false);
+        }
+
+        Environment.ExitCode = result.Success ? 0 : 1;
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(Environment.ExitCode), DispatcherPriority.Background);
+    }
+
+    private static async Task WriteLauncherResultAsync(CommandContext context, LauncherResult result)
+    {
+        var resultPath = context.GetOption("result");
+        if (string.IsNullOrWhiteSpace(resultPath))
+        {
+            return;
+        }
+
+        try
+        {
+            await Commands.WriteResultIfNeededAsync(resultPath, result).ConfigureAwait(false);
+            Logger.Info($"Launcher result written to '{Path.GetFullPath(resultPath)}'.");
+        }
+        catch (Exception ex)
+        {
+            Logger.Error($"Failed to write launcher result to '{resultPath}'.", ex);
+        }
+    }
+
+    private static async Task ShowFailureWindowAsync(LauncherResult result)
+    {
+        ErrorWindow? errorWindow = null;
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                errorWindow = new ErrorWindow();
+                errorWindow.SetErrorMessage(
+                    $"Failed to start LanMountainDesktop.\n\nStage: {result.Stage}\nCode: {result.Code}\n\n{result.Message}");
+                errorWindow.Show();
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to show launcher failure window.", ex);
+            }
+        });
+
+        if (errorWindow is null)
+        {
+            return;
+        }
+
+        try
+        {
+            await errorWindow.WaitForChoiceAsync().ConfigureAwait(false);
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Failure window closed unexpectedly.", ex);
+        }
+    }
+
+    private static async Task RunApplyUpdateWithWindowAsync(
+        IClassicDesktopStyleApplicationLifetime desktop,
+        CommandContext context,
+        UpdateWindow window)
+    {
+        var appRoot = Commands.ResolveAppRoot(context);
+        var deploymentLocator = new DeploymentLocator(appRoot);
+        var updateEngine = new UpdateEngineService(deploymentLocator);
+        var pluginInstaller = new PluginInstallerService();
+        var pluginUpgrades = new PluginUpgradeQueueService(pluginInstaller);
+
+        var success = true;
+        string? errorMessage = null;
+
+        try
+        {
+            await Dispatcher.UIThread.InvokeAsync(() => window.Report("verify", "Verifying update...", 10));
+            var updateResult = await updateEngine.ApplyPendingUpdateAsync().ConfigureAwait(false);
+            if (!updateResult.Success)
+            {
+                success = false;
+                errorMessage = updateResult.Message;
+            }
+
+            if (success)
+            {
+                await Dispatcher.UIThread.InvokeAsync(() => window.Report("plugins", "Applying plugin upgrades...", 60));
+                var pluginsDir = context.GetOption("plugins-dir") ?? Path.Combine(appRoot, "plugins");
+                var queueResult = pluginUpgrades.ApplyPendingUpgrades(pluginsDir);
+                if (!queueResult.Success && queueResult.Code != "noop")
+                {
+                    Logger.Error($"Plugin upgrade failed during apply-update: {queueResult.Message}");
+                }
+            }
+
+            if (success)
+            {
+                await Dispatcher.UIThread.InvokeAsync(() => window.Report("cleanup", "Cleaning up old deployments...", 90));
+                deploymentLocator.CleanupOldDeployments(minVersionsToKeep: 3);
+            }
+        }
+        catch (Exception ex)
+        {
+            success = false;
+            errorMessage = ex.Message;
+            Logger.Error("Apply-update flow failed.", ex);
+        }
+
+        await Dispatcher.UIThread.InvokeAsync(() => window.ReportComplete(success, errorMessage));
+        await Task.Delay(success ? 1500 : 5000).ConfigureAwait(false);
+
+        await Commands.WriteResultIfNeededAsync(context.GetOption("result"), new LauncherResult
+        {
+            Success = success,
+            Stage = "apply-update",
+            Code = success ? "ok" : "failed",
+            Message = success ? "Update applied successfully." : (errorMessage ?? "Unknown error"),
+            Details = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+            {
+                ["command"] = context.Command,
+                ["launchSource"] = context.LaunchSource
+            }
+        }).ConfigureAwait(false);
+
+        Environment.ExitCode = success ? 0 : 1;
+        await Dispatcher.UIThread.InvokeAsync(() => desktop.Shutdown(Environment.ExitCode), DispatcherPriority.Background);
+    }
+}

LanMountainDesktop.Launcher/AppJsonContext.cs

@@ -0,0 +1,32 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Launcher;
+
+[JsonSourceGenerationOptions(
+    WriteIndented = true,
+    PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase,
+    PropertyNameCaseInsensitive = true)]
+[JsonSerializable(typeof(SignedFileMap))]
+[JsonSerializable(typeof(UpdateFileEntry))]
+[JsonSerializable(typeof(PlondsUpdateMetadata))]
+[JsonSerializable(typeof(PlondsFileMap))]
+[JsonSerializable(typeof(PlondsComponentEntry))]
+[JsonSerializable(typeof(PlondsFileEntry))]
+[JsonSerializable(typeof(PlondsHashDescriptor))]
+[JsonSerializable(typeof(SnapshotMetadata))]
+[JsonSerializable(typeof(AppVersionInfo))]
+[JsonSerializable(typeof(StartupProgressMessage))]
+[JsonSerializable(typeof(LauncherResult))]
+[JsonSerializable(typeof(HostDiscoveryConfig))]
+[JsonSerializable(typeof(PluginManifest))]
+[JsonSerializable(typeof(PendingUpgrade))]
+[JsonSerializable(typeof(List<PendingUpgrade>))]
+[JsonSerializable(typeof(OobeStateFile))]
+[JsonSerializable(typeof(GitHubRelease))]
+[JsonSerializable(typeof(GitHubAsset))]
+[JsonSerializable(typeof(List<GitHubRelease>))]
+internal sealed partial class AppJsonContext : JsonSerializerContext;

LanMountainDesktop.Launcher/Assets/public-key.pem

@@ -0,0 +1,11 @@
+-----BEGIN RSA PUBLIC KEY-----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+-----END RSA PUBLIC KEY-----

LanMountainDesktop.Launcher/CommandContext.cs

@@ -0,0 +1,160 @@
+using System.Globalization;
+
+namespace LanMountainDesktop.Launcher;
+
+internal sealed class CommandContext
+{
+    private const string LaunchSourceOptionName = "launch-source";
+
+    private static readonly string[] GuiCommands =
+    [
+        "launch",
+        "apply-update",
+        "preview-splash",
+        "preview-error",
+        "preview-update",
+        "preview-oobe",
+        "preview-debug"
+    ];
+
+    public string Command { get; }
+
+    public string SubCommand { get; }
+
+    public IReadOnlyDictionary<string, string> Options { get; }
+
+    /// <summary>
+    /// 原始命令行参数，用于转发给主程序
+    /// </summary>
+    public IReadOnlyList<string> RawArgs { get; }
+
+    public bool IsLegacyPluginInstall =>
+        Options.ContainsKey("source") &&
+        Options.ContainsKey("plugins-dir") &&
+        Options.ContainsKey("result");
+
+    public string LaunchSource => NormalizeLaunchSource(GetOption(LaunchSourceOptionName)) ?? InferLaunchSource();
+
+    /// <summary>
+    /// 是否处于调试模式（从 Rider/VS 等 IDE 启动）
+    /// 仅当明确指定 --debug 参数或调试器附加时才启用
+    /// </summary>
+    public bool IsDebugMode =>
+        Options.ContainsKey("debug") ||
+        System.Diagnostics.Debugger.IsAttached;
+
+    public bool IsPreviewCommand =>
+        Command.StartsWith("preview-", StringComparison.OrdinalIgnoreCase);
+
+    public bool IsGuiCommand =>
+        GuiCommands.Contains(Command, StringComparer.OrdinalIgnoreCase);
+
+    public bool IsMaintenanceCommand =>
+        string.Equals(LaunchSource, "apply-update", StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(LaunchSource, "plugin-install", StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(Command, "update", StringComparison.OrdinalIgnoreCase) ||
+        string.Equals(Command, "plugin", StringComparison.OrdinalIgnoreCase);
+
+    public string? ExplicitAppRoot => GetOption("app-root");
+
+    private CommandContext(string command, string subCommand, Dictionary<string, string> options, string[] rawArgs)
+    {
+        Command = command;
+        SubCommand = subCommand;
+        Options = options;
+        RawArgs = rawArgs;
+    }
+
+    public static CommandContext FromArgs(string[] args)
+    {
+        var options = ParseOptions(args);
+        var command = args.Length > 0 && !args[0].StartsWith("--", StringComparison.Ordinal)
+            ? args[0]
+            : "launch";
+        var subCommand = args.Length > 1 && !args[1].StartsWith("--", StringComparison.Ordinal)
+            ? args[1]
+            : string.Empty;
+
+        return new CommandContext(command, subCommand, options, args);
+    }
+
+    public string? GetOption(string key)
+    {
+        return Options.TryGetValue(key, out var value) ? value : null;
+    }
+
+    public int GetIntOption(string key, int fallback)
+    {
+        var raw = GetOption(key);
+        return int.TryParse(raw, NumberStyles.Integer, CultureInfo.InvariantCulture, out var value)
+            ? value
+            : fallback;
+    }
+
+    private string InferLaunchSource()
+    {
+        if (IsPreviewCommand)
+        {
+            return "debug-preview";
+        }
+
+        if (string.Equals(Command, "apply-update", StringComparison.OrdinalIgnoreCase))
+        {
+            return "apply-update";
+        }
+
+        if (IsLegacyPluginInstall || string.Equals(Command, "plugin", StringComparison.OrdinalIgnoreCase))
+        {
+            return "plugin-install";
+        }
+
+        return "normal";
+    }
+
+    private static string? NormalizeLaunchSource(string? raw)
+    {
+        if (string.IsNullOrWhiteSpace(raw))
+        {
+            return null;
+        }
+
+        return raw.Trim().ToLowerInvariant() switch
+        {
+            "normal" => "normal",
+            "postinstall" => "postinstall",
+            "apply-update" => "apply-update",
+            "plugin-install" => "plugin-install",
+            "debug-preview" => "debug-preview",
+            _ => null
+        };
+    }
+
+    private static Dictionary<string, string> ParseOptions(string[] args)
+    {
+        var values = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        for (var i = 0; i < args.Length; i++)
+        {
+            var current = args[i];
+            if (!current.StartsWith("--", StringComparison.Ordinal))
+            {
+                continue;
+            }
+
+            var key = current[2..];
+            if (string.IsNullOrWhiteSpace(key))
+            {
+                continue;
+            }
+
+            if (i + 1 < args.Length && !args[i + 1].StartsWith("--", StringComparison.Ordinal))
+            {
+                values[key] = args[++i];
+                continue;
+            }
+
+            values[key] = "true";
+        }
+
+        return values;
+    }
+}

LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.AOT.props

@@ -0,0 +1,66 @@
+<!-- AOT 发布配置文件 -->
+<Project>
+  <PropertyGroup Condition="'$(PublishAot)' == 'true'">
+    <!-- 启用 Native AOT -->
+    <PublishAot>true</PublishAot>
+    
+    <!-- 启用修剪以减小体积 -->
+    <PublishTrimmed>true</PublishTrimmed>
+    <TrimMode>partial</TrimMode>
+    
+    <!-- 自包含（不依赖系统 .NET Runtime） -->
+    <SelfContained>true</SelfContained>
+    
+    <!-- 单文件发布 -->
+    <PublishSingleFile>true</PublishSingleFile>
+    
+    <!-- 包含 native 库到单文件中 -->
+    <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
+    
+    <!-- 压缩单文件 -->
+    <EnableCompressionInSingleFile>true</EnableCompressionInSingleFile>
+    
+    <!-- 优化大小 -->
+    <OptimizationPreference>Size</OptimizationPreference>
+    
+    <!-- 禁用 ReadyToRun（AOT 不需要） -->
+    <PublishReadyToRun>false</PublishReadyToRun>
+    
+    <!-- 注意：RuntimeIdentifier 由 CI/CD 工作流通过 -r 参数传入，不在此处硬编码 -->
+    <!-- 支持的平台：win-x64, win-x86, linux-x64, osx-x64, osx-arm64 -->
+  </PropertyGroup>
+  
+  <!-- AOT 兼容性设置 -->
+  <PropertyGroup>
+    <!-- 允许不安全代码（某些 AOT 场景需要） -->
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    
+    <!-- 启用编译时绑定（Avalonia 需要） -->
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+  </PropertyGroup>
+  
+  <!-- AOT 修剪配置 -->
+  <ItemGroup Condition="'$(PublishAot)' == 'true'">
+    <!-- 保留 Avalonia 必要的类型 -->
+    <TrimmerRootAssembly Include="Avalonia" />
+    <TrimmerRootAssembly Include="Avalonia.Desktop" />
+    
+    <!-- 保留动态序列化类型 -->
+    <TrimmerRootAssembly Include="System.Text.Json" />
+  </ItemGroup>
+  
+  <!-- AOT 兼容性：某些包可能需要特殊处理 -->
+  <PropertyGroup Condition="'$(PublishAot)' == 'true'">
+    <!-- 忽略某些警告 -->
+    <SuppressTrimAnalysisWarnings>false</SuppressTrimAnalysisWarnings>
+    <!-- 允许 IL 警告 -->
+    <TrimmerSingleWarn>false</TrimmerSingleWarn>
+    
+    <!-- AOT 模式下禁用反射式 JSON 序列化，强制使用 Source Generator -->
+    <!-- 之前设置为 true 与 AOT 矛盾，导致 IL2026/IL3050 警告和运行时失败 -->
+    <JsonSerializerIsReflectionEnabledByDefault>false</JsonSerializerIsReflectionEnabledByDefault>
+    
+    <!-- 启用 ISerializable 支持（部分库需要） -->
+    <IsAotCompatible>true</IsAotCompatible>
+  </PropertyGroup>
+</Project>

LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.SingleFile.props

@@ -0,0 +1,29 @@
+<!-- 单文件发布配置文件（非 AOT，但接近单文件体验） -->
+<Project>
+  <PropertyGroup Condition="'$(PublishSingleFileMode)' == 'true'">
+    <!-- 自包含 -->
+    <SelfContained>true</SelfContained>
+    
+    <!-- 单文件发布 -->
+    <PublishSingleFile>true</PublishSingleFile>
+    
+    <!-- 包含 native 库到单文件中 -->
+    <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
+    
+    <!-- 压缩单文件 -->
+    <EnableCompressionInSingleFile>true</EnableCompressionInSingleFile>
+    
+    <!-- ReadyToRun 预编译（提升启动速度） -->
+    <PublishReadyToRun>true</PublishReadyToRun>
+    
+    <!-- 修剪以减小体积 -->
+    <PublishTrimmed>true</PublishTrimmed>
+    <TrimMode>partial</TrimMode>
+    
+    <!-- 优化大小 -->
+    <OptimizationPreference>Size</OptimizationPreference>
+    
+    <!-- 目标运行时 -->
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+  </PropertyGroup>
+</Project>

LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj

@@ -0,0 +1,57 @@
+<Project Sdk="Microsoft.NET.Sdk" TreatAsLocalProperty="Version;PackageVersion;InformationalVersion;AssemblyVersion;FileVersion">
+  
+  <!-- 导入 AOT 配置 -->
+  <Import Project="LanMountainDesktop.Launcher.AOT.props" Condition="Exists('LanMountainDesktop.Launcher.AOT.props')" />
+  
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Version>1.0.0</Version>
+    <PackageVersion>$(Version)</PackageVersion>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    <!-- 应用程序图标 -->
+    <ApplicationIcon>Assets\logo.ico</ApplicationIcon>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!-- 只引用 Shared.Contracts（IPC 协议） -->
+    <ProjectReference Include="..\LanMountainDesktop.Shared.Contracts\LanMountainDesktop.Shared.Contracts.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="11.3.12" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.12" />
+    <PackageReference Include="FluentAvaloniaUI" Version="2.5.0" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.12" />
+    <PackageReference Include="Tmds.DBus.Protocol" Version="0.92.0" />
+  </ItemGroup>
+
+  <!-- 资源文件 -->
+  <ItemGroup>
+    <!-- 公钥文件 -->
+    <None Include="Assets\public-key.pem" CopyToOutputDirectory="PreserveNewest" />
+    <!-- Avalonia 资源文件 -->
+    <AvaloniaResource Include="Assets\logo.ico" />
+  </ItemGroup>
+
+  <Target Name="CopyPublicKeyToLauncherDir" AfterTargets="Build">
+    <PropertyGroup>
+      <PublicKeySource>$(MSBuildProjectDirectory)\Assets\public-key.pem</PublicKeySource>
+      <PublicKeyDestDir>$(OutDir).launcher\update</PublicKeyDestDir>
+    </PropertyGroup>
+    <MakeDir Directories="$(PublicKeyDestDir)" />
+    <Copy SourceFiles="$(PublicKeySource)" DestinationFolder="$(PublicKeyDestDir)" SkipUnchangedFiles="true" />
+  </Target>
+
+  <Target Name="CopyPublicKeyToPublishDir" AfterTargets="Publish">
+    <PropertyGroup>
+      <PublishedKeySource>$(MSBuildProjectDirectory)\Assets\public-key.pem</PublishedKeySource>
+      <PublishedKeyDestDir>$(PublishDir).launcher\update</PublishedKeyDestDir>
+    </PropertyGroup>
+    <MakeDir Directories="$(PublishedKeyDestDir)" />
+    <Copy SourceFiles="$(PublishedKeySource)" DestinationFolder="$(PublishedKeyDestDir)" SkipUnchangedFiles="true" />
+  </Target>
+
+</Project>

LanMountainDesktop.Launcher/LauncherRuntimeContext.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.Launcher;
+
+internal static class LauncherRuntimeContext
+{
+    public static CommandContext Current { get; set; } = CommandContext.FromArgs([]);
+}

LanMountainDesktop.Launcher/Models/LauncherResult.cs

@@ -0,0 +1,42 @@
+using System.Text.Json.Serialization;
+
+namespace LanMountainDesktop.Launcher.Models;
+
+internal sealed class LauncherResult
+{
+    [JsonPropertyName("success")]
+    public bool Success { get; init; }
+
+    [JsonPropertyName("stage")]
+    public string Stage { get; init; } = string.Empty;
+
+    [JsonPropertyName("code")]
+    public string Code { get; init; } = "ok";
+
+    [JsonPropertyName("message")]
+    public string Message { get; init; } = string.Empty;
+
+    [JsonPropertyName("currentVersion")]
+    public string? CurrentVersion { get; init; }
+
+    [JsonPropertyName("targetVersion")]
+    public string? TargetVersion { get; init; }
+
+    [JsonPropertyName("rolledBackTo")]
+    public string? RolledBackTo { get; init; }
+
+    [JsonPropertyName("details")]
+    public Dictionary<string, string> Details { get; init; } = [];
+
+    [JsonPropertyName("installedPackagePath")]
+    public string? InstalledPackagePath { get; init; }
+
+    [JsonPropertyName("manifestId")]
+    public string? ManifestId { get; init; }
+
+    [JsonPropertyName("manifestName")]
+    public string? ManifestName { get; init; }
+
+    [JsonPropertyName("errorMessage")]
+    public string? ErrorMessage { get; init; }
+}

LanMountainDesktop.Launcher/Models/OobeStateModels.cs

@@ -0,0 +1,63 @@
+namespace LanMountainDesktop.Launcher.Models;
+
+internal enum OobeStateStatus
+{
+    FirstRun,
+    Completed,
+    Unavailable,
+    Suppressed
+}
+
+internal sealed class OobeStateFile
+{
+    public int SchemaVersion { get; init; } = 1;
+
+    public string CompletedAtUtc { get; init; } = string.Empty;
+
+    public string UserName { get; init; } = string.Empty;
+
+    public string? UserSid { get; init; }
+
+    public string LaunchSource { get; init; } = string.Empty;
+}
+
+internal sealed class OobeLaunchDecision
+{
+    public OobeStateStatus Status { get; init; }
+
+    public bool ShouldShowOobe { get; init; }
+
+    public string StatePath { get; init; } = string.Empty;
+
+    public string LaunchSource { get; init; } = "normal";
+
+    public bool IsElevated { get; init; }
+
+    public string UserName { get; init; } = string.Empty;
+
+    public string? UserSid { get; init; }
+
+    public string ResultCode { get; init; } = "ok";
+
+    public string SuppressionReason { get; init; } = string.Empty;
+
+    public string ErrorMessage { get; init; } = string.Empty;
+
+    public bool UsedLegacyMarker { get; init; }
+
+    public bool MigratedLegacyMarker { get; init; }
+}
+
+internal sealed class OobeCompletionResult
+{
+    public bool Success { get; init; }
+
+    public string ResultCode { get; init; } = "ok";
+
+    public string ErrorMessage { get; init; } = string.Empty;
+}
+
+internal sealed record LauncherExecutionSnapshot(
+    bool IsElevated,
+    string UserName,
+    string? UserSid);

LanMountainDesktop.Launcher/Models/ReleaseInfo.cs

@@ -0,0 +1,24 @@
+namespace LanMountainDesktop.Launcher.Models;
+
+/// <summary>
+/// GitHub Release 信息
+/// </summary>
+public sealed class ReleaseInfo
+{
+    public required string TagName { get; init; }
+    public required string Name { get; init; }
+    public required bool Prerelease { get; init; }
+    public required DateTime PublishedAt { get; init; }
+    public required List<ReleaseAsset> Assets { get; init; }
+    public string? Body { get; init; }
+}
+
+/// <summary>
+/// Release 资源文件
+/// </summary>
+public sealed class ReleaseAsset
+{
+    public required string Name { get; init; }
+    public required string BrowserDownloadUrl { get; init; }
+    public required long Size { get; init; }
+}

LanMountainDesktop.Launcher/Models/UpdateChannel.cs

@@ -0,0 +1,17 @@
+namespace LanMountainDesktop.Launcher.Models;
+
+/// <summary>
+/// 更新频道
+/// </summary>
+public enum UpdateChannel
+{
+    /// <summary>
+    /// 正式版 - 只检查 prerelease=false 的版本
+    /// </summary>
+    Stable,
+
+    /// <summary>
+    /// 预览版 - 检查所有版本(包括 prerelease=true)
+    /// </summary>
+    Preview
+}

LanMountainDesktop.Launcher/Models/UpdateCheckResult.cs

@@ -0,0 +1,13 @@
+namespace LanMountainDesktop.Launcher.Models;
+
+/// <summary>
+/// 更新检查结果
+/// </summary>
+public sealed class UpdateCheckResult
+{
+    public bool HasUpdate { get; init; }
+    public string? LatestVersion { get; init; }
+    public string? CurrentVersion { get; init; }
+    public ReleaseInfo? Release { get; init; }
+    public string? ErrorMessage { get; init; }
+}

LanMountainDesktop.Launcher/Models/UpdateModels.cs

@@ -0,0 +1,144 @@
+namespace LanMountainDesktop.Launcher.Models;
+
+internal sealed class SignedFileMap
+{
+    public string? FromVersion { get; set; }
+
+    public string? ToVersion { get; set; }
+
+    public string? Platform { get; set; }
+
+    public string? Arch { get; set; }
+
+    public List<UpdateFileEntry> Files { get; set; } = [];
+}
+
+internal sealed class UpdateFileEntry
+{
+    public string Path { get; set; } = string.Empty;
+
+    public string? ArchivePath { get; set; }
+
+    public string Action { get; set; } = "replace";
+
+    public string? Sha256 { get; set; }
+}
+
+internal sealed class SnapshotMetadata
+{
+    public string SnapshotId { get; set; } = string.Empty;
+
+    public string SourceVersion { get; set; } = string.Empty;
+
+    public string? TargetVersion { get; set; }
+
+    public DateTimeOffset CreatedAt { get; set; }
+
+    public string SourceDirectory { get; set; } = string.Empty;
+
+    public string? TargetDirectory { get; set; }
+
+    public string Status { get; set; } = "pending";
+}
+
+internal sealed class UpdateApplyResult
+{
+    public bool Success { get; init; }
+
+    public string Message { get; init; } = string.Empty;
+
+    public string? FromVersion { get; init; }
+
+    public string? ToVersion { get; init; }
+
+    public string? RolledBackTo { get; init; }
+}
+
+internal sealed class PlondsUpdateMetadata
+{
+    public string? DistributionId { get; set; }
+
+    public string? Channel { get; set; }
+
+    public string? SubChannel { get; set; }
+
+    public string? FromVersion { get; set; }
+
+    public string? ToVersion { get; set; }
+
+    public string? FileMapPath { get; set; }
+
+    public string? FileMapSignaturePath { get; set; }
+
+    public Dictionary<string, string> Metadata { get; set; } = [];
+}
+
+internal sealed class PlondsFileMap
+{
+    public string? DistributionId { get; set; }
+
+    public string? FromVersion { get; set; }
+
+    public string? ToVersion { get; set; }
+
+    public string? Version { get; set; }
+
+    public string? Platform { get; set; }
+
+    public string? Arch { get; set; }
+
+    public Dictionary<string, string> Metadata { get; set; } = [];
+
+    public List<PlondsComponentEntry> Components { get; set; } = [];
+
+    public List<PlondsFileEntry> Files { get; set; } = [];
+}
+
+internal sealed class PlondsComponentEntry
+{
+    public string Name { get; set; } = string.Empty;
+
+    public string? Version { get; set; }
+
+    public Dictionary<string, string> Metadata { get; set; } = [];
+
+    public List<PlondsFileEntry> Files { get; set; } = [];
+}
+
+internal sealed class PlondsFileEntry
+{
+    public string Path { get; set; } = string.Empty;
+
+    public string? Action { get; set; } = "replace";
+
+    public string? Url { get; set; }
+
+    public string? ObjectUrl { get; set; }
+
+    public string? ObjectPath { get; set; }
+
+    public string? ObjectKey { get; set; }
+
+    public string? ArchivePath { get; set; }
+
+    public string? Sha256 { get; set; }
+
+    public string? Sha512 { get; set; }
+
+    public string? Sha512Base64 { get; set; }
+
+    public byte[]? Sha512Bytes { get; set; }
+
+    public PlondsHashDescriptor? Hash { get; set; }
+
+    public Dictionary<string, string> Metadata { get; set; } = [];
+}
+
+internal sealed class PlondsHashDescriptor
+{
+    public string? Algorithm { get; set; }
+
+    public string? Value { get; set; }
+
+    public byte[]? Bytes { get; set; }
+}

LanMountainDesktop.Launcher/Program.cs

@@ -0,0 +1,76 @@
+using Avalonia;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Launcher.Services;
+
+namespace LanMountainDesktop.Launcher;
+
+internal static class Program
+{
+    [STAThread]
+    private static async Task<int> Main(string[] args)
+    {
+        var commandContext = CommandContext.FromArgs(args);
+        var execution = LauncherExecutionContext.Capture();
+        Logger.Initialize();
+        Logger.Info(
+            $"Program entry. Command='{commandContext.Command}'; SubCommand='{commandContext.SubCommand}'; " +
+            $"IsGuiMode={commandContext.IsGuiCommand}; IsDebugMode={commandContext.IsDebugMode}; " +
+            $"LaunchSource='{commandContext.LaunchSource}'; IsElevated={execution.IsElevated}; " +
+            $"UserSid='{execution.UserSid ?? string.Empty}'; " +
+            $"HasResultPath={!string.IsNullOrWhiteSpace(commandContext.GetOption("result"))}; " +
+            $"ExplicitAppRoot='{commandContext.ExplicitAppRoot ?? "<none>"}'.");
+
+        try
+        {
+            if (commandContext.IsLegacyPluginInstall)
+            {
+                var installer = new PluginInstallerService();
+                return await Commands.RunLegacyPluginInstallAsync(commandContext, installer).ConfigureAwait(false);
+            }
+
+            if (!commandContext.IsGuiCommand)
+            {
+                return await Commands.RunCliCommandAsync(commandContext).ConfigureAwait(false);
+            }
+
+            LauncherRuntimeContext.Current = commandContext;
+            BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+            return Environment.ExitCode;
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Launcher failed before GUI flow completed.", ex);
+
+            var result = new LauncherResult
+            {
+                Success = false,
+                Stage = "launcher",
+                Code = "launcher_bootstrap_failed",
+                Message = ex.Message,
+                ErrorMessage = ex.ToString(),
+                Details = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+                {
+                    ["command"] = commandContext.Command,
+                    ["subCommand"] = commandContext.SubCommand,
+                    ["launchSource"] = commandContext.LaunchSource,
+                    ["isGuiMode"] = commandContext.IsGuiCommand.ToString(),
+                    ["isDebugMode"] = commandContext.IsDebugMode.ToString(),
+                    ["isElevated"] = execution.IsElevated.ToString(),
+                    ["userSid"] = execution.UserSid ?? string.Empty,
+                    ["explicitAppRoot"] = commandContext.ExplicitAppRoot ?? string.Empty
+                }
+            };
+
+            await Commands.WriteResultIfNeededAsync(commandContext.GetOption("result"), result).ConfigureAwait(false);
+            return 1;
+        }
+    }
+
+    private static AppBuilder BuildAvaloniaApp()
+    {
+        return AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+    }
+}

LanMountainDesktop.Launcher/Properties/AssemblyInfo.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("LanMountainDesktop.Tests")]

LanMountainDesktop.Launcher/Properties/launchSettings.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "Launcher (Launch Mode)": {
+      "commandName": "Project",
+      "commandLineArgs": "launch",
+      "workingDirectory": "$(SolutionDir)",
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    },
+    "Launcher (Update Check)": {
+      "commandName": "Project",
+      "commandLineArgs": "update check",
+      "workingDirectory": "$(SolutionDir)",
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    },
+    "Launcher (Plugin Install)": {
+      "commandName": "Project",
+      "commandLineArgs": "plugin install <path-to-plugin.laapp>",
+      "workingDirectory": "$(SolutionDir)",
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

LanMountainDesktop.Launcher/Services/Commands.cs

@@ -0,0 +1,193 @@
+using System.Text;
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal static class Commands
+{
+    public static async Task<int> RunLegacyPluginInstallAsync(CommandContext context, PluginInstallerService installer)
+    {
+        var resultPath = context.GetOption("result");
+        LauncherResult result;
+        try
+        {
+            var source = context.GetOption("source") ?? string.Empty;
+            var pluginsDir = context.GetOption("plugins-dir") ?? string.Empty;
+            result = installer.InstallPackage(source, pluginsDir);
+        }
+        catch (Exception ex)
+        {
+            result = new LauncherResult
+            {
+                Success = false,
+                Stage = "plugin.install",
+                Code = "failed",
+                Message = ex.Message,
+                ErrorMessage = ex.Message
+            };
+        }
+
+        await WriteResultIfNeededAsync(resultPath, result).ConfigureAwait(false);
+        return result.Success ? 0 : 1;
+    }
+
+    public static async Task<int> RunCliCommandAsync(CommandContext context)
+    {
+        var appRoot = ResolveAppRoot(context);
+        var deploymentLocator = new DeploymentLocator(appRoot);
+        var updateEngine = new UpdateEngineService(deploymentLocator);
+        var pluginInstaller = new PluginInstallerService();
+        var pluginUpgrades = new PluginUpgradeQueueService(pluginInstaller);
+
+        LauncherResult result;
+        try
+        {
+            result = await ExecuteCoreAsync(context, updateEngine, pluginInstaller, pluginUpgrades).ConfigureAwait(false);
+        }
+        catch (Exception ex)
+        {
+            result = new LauncherResult
+            {
+                Success = false,
+                Stage = "command",
+                Code = "exception",
+                Message = ex.Message,
+                ErrorMessage = ex.Message
+            };
+        }
+
+        await WriteResultIfNeededAsync(context.GetOption("result"), result).ConfigureAwait(false);
+        return result.Success ? 0 : 1;
+    }
+
+    private static async Task<LauncherResult> ExecuteCoreAsync(
+        CommandContext context,
+        UpdateEngineService updateEngine,
+        PluginInstallerService pluginInstaller,
+        PluginUpgradeQueueService pluginUpgrades)
+    {
+        switch (context.Command.ToLowerInvariant())
+        {
+            case "update":
+                return await ExecuteUpdateAsync(context, updateEngine).ConfigureAwait(false);
+            case "plugin":
+                return ExecutePluginCommand(context, pluginInstaller, pluginUpgrades);
+            default:
+                return new LauncherResult
+                {
+                    Success = false,
+                    Stage = "command",
+                    Code = "unsupported_command",
+                    Message = $"Unsupported command '{context.Command}'."
+                };
+        }
+    }
+
+    private static async Task<LauncherResult> ExecuteUpdateAsync(CommandContext context, UpdateEngineService updateEngine)
+    {
+        return context.SubCommand.ToLowerInvariant() switch
+        {
+            "check" => updateEngine.CheckPendingUpdate(),
+            "apply" => await updateEngine.ApplyPendingUpdateAsync().ConfigureAwait(false),
+            "rollback" => updateEngine.RollbackLatest(),
+            "download" => await DownloadUpdatePayloadAsync(context, updateEngine).ConfigureAwait(false),
+            _ => new LauncherResult
+            {
+                Success = false,
+                Stage = "update",
+                Code = "unsupported_subcommand",
+                Message = $"Unsupported update sub-command '{context.SubCommand}'."
+            }
+        };
+    }
+
+    private static async Task<LauncherResult> DownloadUpdatePayloadAsync(CommandContext context, UpdateEngineService updateEngine)
+    {
+        return await updateEngine.DownloadAsync(
+            context.GetOption("manifest-url") ?? throw new InvalidOperationException("Missing --manifest-url."),
+            context.GetOption("signature-url") ?? throw new InvalidOperationException("Missing --signature-url."),
+            context.GetOption("archive-url") ?? throw new InvalidOperationException("Missing --archive-url."),
+            CancellationToken.None).ConfigureAwait(false);
+    }
+
+    private static LauncherResult ExecutePluginCommand(
+        CommandContext context,
+        PluginInstallerService pluginInstaller,
+        PluginUpgradeQueueService pluginUpgrades)
+    {
+        switch (context.SubCommand.ToLowerInvariant())
+        {
+            case "install":
+            {
+                var source = context.GetOption("source") ?? throw new InvalidOperationException("Missing --source.");
+                var pluginsDir = context.GetOption("plugins-dir") ?? throw new InvalidOperationException("Missing --plugins-dir.");
+                return pluginInstaller.InstallPackage(source, pluginsDir);
+            }
+            case "update":
+            {
+                var pluginsDir = context.GetOption("plugins-dir") ?? throw new InvalidOperationException("Missing --plugins-dir.");
+                return pluginUpgrades.ApplyPendingUpgrades(pluginsDir);
+            }
+            default:
+                return new LauncherResult
+                {
+                    Success = false,
+                    Stage = "plugin",
+                    Code = "unsupported_subcommand",
+                    Message = $"Unsupported plugin sub-command '{context.SubCommand}'."
+                };
+        }
+    }
+
+    public static async Task WriteResultIfNeededAsync(string? resultPath, LauncherResult result)
+    {
+        if (string.IsNullOrWhiteSpace(resultPath))
+        {
+            return;
+        }
+
+        var fullPath = Path.GetFullPath(resultPath);
+        var dir = Path.GetDirectoryName(fullPath);
+        if (!string.IsNullOrWhiteSpace(dir))
+        {
+            Directory.CreateDirectory(dir);
+        }
+
+        var json = JsonSerializer.Serialize(result, AppJsonContext.Default.LauncherResult);
+        await File.WriteAllTextAsync(fullPath, json, Encoding.UTF8).ConfigureAwait(false);
+    }
+
+    public static string ResolveAppRoot(CommandContext context)
+    {
+        var configured = context.GetOption("app-root");
+        if (!string.IsNullOrWhiteSpace(configured))
+        {
+            return Path.GetFullPath(configured);
+        }
+
+        var baseDir = AppContext.BaseDirectory;
+        
+        // 发布版结构：Launcher 和 app-* 目录在同一目录
+        // 检查当前目录是否有 app-* 子目录（发布版）
+        var appDirs = Directory.GetDirectories(baseDir, "app-*", SearchOption.TopDirectoryOnly);
+        if (appDirs.Length > 0)
+        {
+            // 找到 app-* 目录，说明是发布版结构
+            return baseDir;
+        }
+        
+        // 开发环境：检查父目录是否有主程序
+        var parent = Path.GetFullPath(Path.Combine(baseDir, ".."));
+        var parentHost = OperatingSystem.IsWindows()
+            ? Path.Combine(parent, "LanMountainDesktop.exe")
+            : Path.Combine(parent, "LanMountainDesktop");
+        if (File.Exists(parentHost))
+        {
+            return parent;
+        }
+        
+        // 默认返回 baseDir
+        return baseDir;
+    }
+}

LanMountainDesktop.Launcher/Services/DeferredSplashStageReporter.cs

@@ -0,0 +1,40 @@
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Views;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class DeferredSplashStageReporter : ISplashStageReporter
+{
+    private ISplashStageReporter? _inner;
+    private readonly List<(string Stage, string Message)> _pending = [];
+
+    public void SetInner(ISplashStageReporter inner)
+    {
+        _inner = inner;
+        foreach (var (stage, message) in _pending)
+        {
+            _inner.Report(stage, message);
+        }
+        _pending.Clear();
+    }
+
+    public void Report(string stage, string message)
+    {
+        if (_inner is not null)
+        {
+            _inner.Report(stage, message);
+        }
+        else
+        {
+            _pending.Add((stage, message));
+        }
+    }
+
+    public void ReportStage(string stage, int progress)
+    {
+        if (_inner is not null)
+        {
+            _inner.ReportStage(stage, progress);
+        }
+    }
+}

LanMountainDesktop.Launcher/Services/DeploymentLocator.cs

@@ -0,0 +1,616 @@
+using System.Globalization;
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class DeploymentLocator
+{
+    private readonly string _appRoot;
+
+    public DeploymentLocator(string appRoot)
+    {
+        _appRoot = appRoot;
+    }
+
+    public string GetAppRoot() => _appRoot;
+
+    public string? FindCurrentDeploymentDirectory()
+    {
+        Console.WriteLine("[DeploymentLocator] Searching for deployment directories (ClassIsland style)...");
+
+        if (!Directory.Exists(_appRoot))
+        {
+            Console.WriteLine("[DeploymentLocator] App root directory does not exist");
+            return null;
+        }
+
+        var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";
+
+        try
+        {
+            var candidates = Directory.GetDirectories(_appRoot, "app-*", SearchOption.TopDirectoryOnly);
+            Console.WriteLine($"[DeploymentLocator] Found {candidates.Length} app-* directories");
+
+            var validInstallations = candidates
+                .Where(path =>
+                {
+                    var hasDestroy = File.Exists(Path.Combine(path, ".destroy"));
+                    var hasPartial = File.Exists(Path.Combine(path, ".partial"));
+                    var hasExe = File.Exists(Path.Combine(path, executable));
+                    var hasCurrent = File.Exists(Path.Combine(path, ".current"));
+                    var version = ParseVersionFromDirectory(path);
+
+                    Console.WriteLine($"[DeploymentLocator] Candidate: {Path.GetFileName(path)} | " +
+                        $"Version={version} | " +
+                        $"Current={hasCurrent} | " +
+                        $"Destroy={hasDestroy} | " +
+                        $"Partial={hasPartial} | " +
+                        $"HasExe={hasExe}");
+
+                    return !hasDestroy && !hasPartial && hasExe;
+                })
+                .Select(path => new
+                {
+                    Path = path,
+                    Version = ParseVersionFromDirectory(path),
+                    HasCurrentMarker = File.Exists(Path.Combine(path, ".current"))
+                })
+                .OrderBy(x => x.HasCurrentMarker ? 0 : 1)  // .current 标记的排å‰<C3A5>é<EFBFBD>¢
+                .ThenByDescending(x => x.Version)  // 然å<C2B6>ŽæŒ‰ç‰ˆæœ¬å<C2AC>·é™<C3A9>åº<C3A5>
+                .ToList();
+
+            if (validInstallations.Count == 0)
+            {
+                Console.WriteLine("[DeploymentLocator] No valid deployment directories found");
+                return null;
+            }
+
+            var best = validInstallations[0];
+            Console.WriteLine($"[DeploymentLocator] Selected: {Path.GetFileName(best.Path)} (current={best.HasCurrentMarker}, version={best.Version})");
+            return best.Path;
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[DeploymentLocator] Error searching for deployments: {ex}");
+            return null;
+        }
+    }
+
+    public HostResolutionResult ResolveHostExecutable(CommandContext context)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+
+        var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";
+        var searchedPaths = new List<string>();
+        var explicitAppRoot = context.ExplicitAppRoot;
+        var devModeConfigIgnored = !context.IsDebugMode && Views.ErrorWindow.CheckDevModeEnabled();
+
+        string? resolvedPath;
+        string? source;
+
+        if (!string.IsNullOrWhiteSpace(explicitAppRoot))
+        {
+            var explicitRoot = Path.GetFullPath(explicitAppRoot);
+            resolvedPath = TryResolveExplicitAppRoot(explicitRoot, executable, searchedPaths, out source);
+        }
+        else
+        {
+            resolvedPath = TryResolvePublishedOrPortableHost(executable, searchedPaths, out source);
+        }
+
+        if (resolvedPath is null && context.IsDebugMode)
+        {
+            resolvedPath = TryResolveDebugHost(executable, searchedPaths, out source);
+        }
+
+        if (resolvedPath is null)
+        {
+            resolvedPath = ResolveHostExecutablePathLegacy();
+            if (!string.IsNullOrWhiteSpace(resolvedPath))
+            {
+                searchedPaths.Add(Path.GetFullPath(resolvedPath));
+                source = "legacy_fallback";
+            }
+        }
+
+        return new HostResolutionResult
+        {
+            Success = !string.IsNullOrWhiteSpace(resolvedPath),
+            ResolvedHostPath = resolvedPath,
+            ResolutionSource = source,
+            AppRoot = _appRoot,
+            ExplicitAppRoot = explicitAppRoot,
+            DevModeConfigIgnored = devModeConfigIgnored,
+            SearchedPaths = searchedPaths
+                .Where(path => !string.IsNullOrWhiteSpace(path))
+                .Distinct(StringComparer.OrdinalIgnoreCase)
+                .ToList()
+        };
+    }
+
+    public string? ResolveHostExecutablePath()
+    {
+        return ResolveHostExecutablePathLegacy();
+    }
+
+    private string? TryResolveExplicitAppRoot(
+        string explicitRoot,
+        string executable,
+        List<string> searchedPaths,
+        out string? source)
+    {
+        var directPath = Path.Combine(explicitRoot, executable);
+        searchedPaths.Add(directPath);
+        if (File.Exists(directPath))
+        {
+            source = "explicit_app_root_direct";
+            return directPath;
+        }
+
+        var deployment = FindBestDeploymentHost(explicitRoot, executable, searchedPaths);
+        if (deployment is not null)
+        {
+            source = "explicit_app_root_deployment";
+            return deployment;
+        }
+
+        source = null;
+        return null;
+    }
+
+    private string? TryResolvePublishedOrPortableHost(
+        string executable,
+        List<string> searchedPaths,
+        out string? source)
+    {
+        var deployment = FindBestDeploymentHost(_appRoot, executable, searchedPaths);
+        if (deployment is not null)
+        {
+            source = "published_deployment";
+            return deployment;
+        }
+
+        var portableCandidates = new[]
+        {
+            Path.Combine(_appRoot, executable),
+            Path.Combine(AppContext.BaseDirectory, executable)
+        };
+
+        foreach (var candidate in portableCandidates
+                     .Select(Path.GetFullPath)
+                     .Distinct(StringComparer.OrdinalIgnoreCase))
+        {
+            searchedPaths.Add(candidate);
+            if (File.Exists(candidate))
+            {
+                source = "portable_host";
+                return candidate;
+            }
+        }
+
+        source = null;
+        return null;
+    }
+
+    private string? TryResolveDebugHost(
+        string executable,
+        List<string> searchedPaths,
+        out string? source)
+    {
+        if (Views.ErrorWindow.CheckDevModeEnabled())
+        {
+            var savedCustomPath = Views.ErrorWindow.GetSavedCustomHostPath();
+            if (!string.IsNullOrWhiteSpace(savedCustomPath))
+            {
+                var fullSavedPath = Path.GetFullPath(savedCustomPath);
+                searchedPaths.Add(fullSavedPath);
+                if (File.Exists(fullSavedPath))
+                {
+                    source = "debug_saved_custom_path";
+                    return fullSavedPath;
+                }
+            }
+        }
+
+        foreach (var devPath in GetDevelopmentPaths(executable))
+        {
+            var fullPath = Path.GetFullPath(devPath);
+            searchedPaths.Add(fullPath);
+            if (File.Exists(fullPath))
+            {
+                source = "debug_build_output";
+                return fullPath;
+            }
+        }
+
+        source = null;
+        return null;
+    }
+
+    private static string? FindBestDeploymentHost(
+        string root,
+        string executable,
+        List<string> searchedPaths)
+    {
+        if (!Directory.Exists(root))
+        {
+            searchedPaths.Add(Path.Combine(root, "app-*", executable));
+            return null;
+        }
+
+        var appDirs = Directory.GetDirectories(root, "app-*", SearchOption.TopDirectoryOnly)
+            .Where(path => !File.Exists(Path.Combine(path, ".destroy")))
+            .Where(path => !File.Exists(Path.Combine(path, ".partial")))
+            .Select(path => new
+            {
+                Path = path,
+                HostPath = Path.Combine(path, executable),
+                HasCurrent = File.Exists(Path.Combine(path, ".current")),
+                Version = ParseVersionFromDirectory(path)
+            })
+            .OrderByDescending(item => item.HasCurrent)
+            .ThenByDescending(item => item.Version)
+            .ToList();
+
+        foreach (var candidate in appDirs)
+        {
+            searchedPaths.Add(candidate.HostPath);
+            if (File.Exists(candidate.HostPath))
+            {
+                return candidate.HostPath;
+            }
+        }
+
+        if (appDirs.Count == 0)
+        {
+            searchedPaths.Add(Path.Combine(root, "app-*", executable));
+        }
+
+        return null;
+    }
+
+    private string? ResolveHostExecutablePathLegacy()
+    {
+        var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";
+        
+        // 1. 首先查找 app-{version} 目录（生产环境）
+        var currentDeployment = FindCurrentDeploymentDirectory();
+        if (!string.IsNullOrWhiteSpace(currentDeployment))
+        {
+            var inDeployment = Path.Combine(currentDeployment, executable);
+            if (File.Exists(inDeployment))
+            {
+                return inDeployment;
+            }
+        }
+
+        var inRoot = Path.Combine(_appRoot, executable);
+        if (File.Exists(inRoot))
+        {
+            return inRoot;
+        }
+
+        var parent = Path.GetFullPath(Path.Combine(_appRoot, ".."));
+        var inParent = Path.Combine(parent, executable);
+        if (File.Exists(inParent))
+        {
+            return inParent;
+        }
+
+        // 4. å¼€å<E282AC>‘模å¼<C3A5>：如果å<C593>¯ç”¨äº†å¼€å<E282AC>‘模å¼<C3A5>，优先使用ä¿<C3A4>存的自定义路径
+        if (Views.ErrorWindow.CheckDevModeEnabled())
+        {
+            var savedCustomPath = Views.ErrorWindow.GetSavedCustomHostPath();
+            if (!string.IsNullOrWhiteSpace(savedCustomPath) && File.Exists(savedCustomPath))
+            {
+                return savedCustomPath;
+            }
+
+            var devPath = ScanDevelopmentPaths(executable);
+            if (!string.IsNullOrWhiteSpace(devPath))
+            {
+                return devPath;
+            }
+        }
+
+        // 5. å¼€å<E282AC>‘模å¼<C3A5>：查找主程åº<C3A5>项目的输出目录
+        var devPaths = GetDevelopmentPaths(executable);
+        foreach (var devPath in devPaths)
+        {
+            if (File.Exists(devPath))
+            {
+                return devPath;
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 扫æ<C2AB><C3A6>å¼€å<E282AC>‘路径（开å<E282AC>‘模å¼<C3A5>）
+    /// </summary>
+    private static string? ScanDevelopmentPaths(string executable)
+    {
+        var possiblePaths = new[]
+        {
+            // ä»?Launcher 项目è¿<C3A8>è¡Œ
+            Path.Combine(AppContext.BaseDirectory, "..", "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            
+            // 从解决方案根目录è¿<C3A8>è¡Œ
+            Path.Combine(AppContext.BaseDirectory, "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            
+            // dev-test 目录
+            Path.Combine(AppContext.BaseDirectory, "..", "dev-test", "app-1.0.0-dev", executable),
+        };
+
+        foreach (var path in possiblePaths.Select(Path.GetFullPath).Distinct())
+        {
+            if (File.Exists(path))
+            {
+                return path;
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 获å<C2B7>–å¼€å<E282AC>‘环境å<C692>¯èƒ½çš„主程åº<C3A5>è·¯å¾?    /// </summary>
+    private static IEnumerable<string> GetDevelopmentPaths(string executable)
+    {
+        var launcherDir = AppContext.BaseDirectory;
+        
+        var possiblePaths = new[]
+        {
+            // ä»?Launcher 项目è¿<C3A8>è¡Œï¼?.\LanMountainDesktop\bin\Debug\net10.0\LanMountainDesktop.exe
+            Path.Combine(launcherDir, "..", "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(launcherDir, "..", "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            
+            // 从解决方案根目录è¿<C3A8>行：LanMountainDesktop\bin\Debug\net10.0\LanMountainDesktop.exe
+            Path.Combine(launcherDir, "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(launcherDir, "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            
+            // ä»?dev-test 目录è¿<C3A8>è¡Œ
+            Path.Combine(launcherDir, "..", "dev-test", "app-1.0.0-dev", executable),
+        };
+
+        return possiblePaths.Select(Path.GetFullPath).Distinct();
+    }
+
+    public string GetCurrentVersion()
+    {
+        var deployment = FindCurrentDeploymentDirectory();
+        if (string.IsNullOrWhiteSpace(deployment))
+        {
+            return "0.0.0";
+        }
+
+        return ParseVersionTextFromDirectory(deployment) ?? "0.0.0";
+    }
+
+    public string BuildNextDeploymentDirectory(string targetVersion)
+    {
+        var sanitized = string.IsNullOrWhiteSpace(targetVersion) ? "0.0.0" : targetVersion.Trim();
+        var index = 0;
+        while (true)
+        {
+            var candidate = Path.Combine(_appRoot, $"app-{sanitized}-{index.ToString(CultureInfo.InvariantCulture)}");
+            if (!Directory.Exists(candidate))
+            {
+                return candidate;
+            }
+
+            index++;
+        }
+    }
+
+    /// <summary>
+    /// 清ç<E280A6>†æ—§ç‰ˆæœ¬éƒ¨ç½²ï¼Œä¿<C3A4>留最近的N个版æœ?    /// </summary>
+    /// <param name="minVersionsToKeep">最少ä¿<C3A4>留版本数，默è®?ä¸?/param>
+    public void CleanupOldDeployments(int minVersionsToKeep = 3)
+    {
+        try
+        {
+            Console.WriteLine($"[DeploymentLocator] Starting cleanup with retention policy: keep at least {minVersionsToKeep} versions");
+
+            if (!Directory.Exists(_appRoot))
+            {
+                return;
+            }
+
+            var candidates = Directory.GetDirectories(_appRoot, "app-*", SearchOption.TopDirectoryOnly);
+
+            var validDeployments = candidates
+                .Where(path => !File.Exists(Path.Combine(path, ".partial")))
+                .Select(path => new
+                {
+                    Path = path,
+                    Version = ParseVersionFromDirectory(path),
+                    IsDestroyed = File.Exists(Path.Combine(path, ".destroy")),
+                    IsCurrent = File.Exists(Path.Combine(path, ".current"))
+                })
+                .OrderByDescending(item => item.Version)
+                .ToList();
+
+            Console.WriteLine($"[DeploymentLocator] Found {validDeployments.Count} valid deployments");
+
+            // 确定è¦<C3A8>ä¿<C3A4>留的版本
+            var versionsToKeep = new HashSet<string>();
+
+            // 1. 总是ä¿<C3A4>留当å‰<C3A5>版本
+            var currentVersion = validDeployments.FirstOrDefault(d => d.IsCurrent);
+            if (currentVersion != null)
+            {
+                versionsToKeep.Add(currentVersion.Path);
+                Console.WriteLine($"[DeploymentLocator] Keep current version: {currentVersion.Path}");
+            }
+
+            // 2. ä¿<C3A4>留最近的N个有效版本（ä¸<C3A4>包括已标记destroy的）
+            var activeVersions = validDeployments
+                .Where(d => !d.IsDestroyed)
+                .Take(minVersionsToKeep)
+                .ToList();
+
+            foreach (var ver in activeVersions)
+            {
+                versionsToKeep.Add(ver.Path);
+                Console.WriteLine($"[DeploymentLocator] Keep recent version: {ver.Path}");
+            }
+
+            // 3. ä¿<C3A4>留有快照的版本（用于回滚）
+            var snapshotDir = Path.Combine(_appRoot, ".launcher", "snapshots");
+            if (Directory.Exists(snapshotDir))
+            {
+                try
+                {
+                    var snapshotFiles = Directory.GetFiles(snapshotDir, "*.json", SearchOption.TopDirectoryOnly);
+                    foreach (var snapshotFile in snapshotFiles)
+                    {
+                        try
+                        {
+                            var json = File.ReadAllText(snapshotFile);
+                            var snapshot = System.Text.Json.JsonSerializer.Deserialize(json, AppJsonContext.Default.SnapshotMetadata);
+                            if (snapshot != null && !string.IsNullOrEmpty(snapshot.SourceDirectory))
+                            {
+                                if (Directory.Exists(snapshot.SourceDirectory))
+                                {
+                                    versionsToKeep.Add(snapshot.SourceDirectory);
+                                    Console.WriteLine($"[DeploymentLocator] Keep version for rollback: {snapshot.SourceDirectory}");
+                                }
+                            }
+                        }
+                        catch
+                        {
+                            // 忽略快照解æž<C3A6>错误
+                        }
+                    }
+                }
+                catch
+                {
+                    // 忽略快照目录访问错误
+                }
+            }
+
+            // 清ç<E280A6>†ä¸<C3A4>需è¦<C3A8>的版本
+            foreach (var deployment in validDeployments)
+            {
+                if (versionsToKeep.Contains(deployment.Path))
+                {
+                    if (deployment.IsDestroyed)
+                    {
+                        try
+                        {
+                            File.Delete(Path.Combine(deployment.Path, ".destroy"));
+                            Console.WriteLine($"[DeploymentLocator] Unmarked for deletion (kept): {deployment.Path}");
+                        }
+                        catch
+                        {
+                            // 忽略å<C2A5>–消标记失败
+                        }
+                    }
+                    continue;
+                }
+
+                if (!deployment.IsDestroyed)
+                {
+                    try
+                    {
+                        File.WriteAllText(Path.Combine(deployment.Path, ".destroy"), string.Empty);
+                        Console.WriteLine($"[DeploymentLocator] Marked for deletion: {deployment.Path}");
+                    }
+                    catch
+                    {
+                        // 忽略标记失败
+                    }
+                }
+
+                // å°<C3A5>试删除
+                try
+                {
+                    Directory.Delete(deployment.Path, recursive: true);
+                    Console.WriteLine($"[DeploymentLocator] Deleted: {deployment.Path}");
+                }
+                catch
+                {
+                    // 忽略删除失败(å<>¯èƒ½æ–‡ä»¶è¢«å<C2AB> ç”?,下次å<C2A1>¯åŠ¨å†<C3A5>试
+                    Console.WriteLine($"[DeploymentLocator] Failed to delete (will retry later): {deployment.Path}");
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[DeploymentLocator] Cleanup failed: {ex.Message}");
+            // 忽略清ç<E280A6>†å¤±è´¥
+        }
+    }
+
+    /// <summary>
+    /// 仅清ç<E280A6>†å·²æ ‡è®°ä¸?destroy的部署（兼容旧方法）
+    /// </summary>
+    [Obsolete("Use CleanupOldDeployments instead")]
+    public void CleanupDestroyedDeployments()
+    {
+        CleanupOldDeployments(3);
+    }
+
+    public static Version ParseVersionFromDirectory(string path)
+    {
+        var text = ParseVersionTextFromDirectory(path);
+        return Version.TryParse(text, out var version) ? version : new Version(0, 0, 0);
+    }
+
+    private static string? ParseVersionTextFromDirectory(string path)
+    {
+        var fileName = Path.GetFileName(path);
+        if (string.IsNullOrWhiteSpace(fileName))
+        {
+            return null;
+        }
+
+        var segments = fileName.Split('-');
+        if (segments.Length < 2)
+        {
+            return null;
+        }
+
+        return segments[1];
+    }
+
+    /// <summary>
+    /// 从部署目录读å<C2BB>–版本信æ<C2A1>?    /// </summary>
+    public AppVersionInfo GetVersionInfo()
+    {
+        var deploymentDir = FindCurrentDeploymentDirectory();
+        if (!string.IsNullOrWhiteSpace(deploymentDir))
+        {
+            var versionFile = Path.Combine(deploymentDir, "version.json");
+            if (File.Exists(versionFile))
+            {
+                try
+                {
+                    var json = File.ReadAllText(versionFile);
+                    var info = JsonSerializer.Deserialize(json, AppJsonContext.Default.AppVersionInfo);
+                    if (info is not null)
+                    {
+                        return info;
+                    }
+                }
+                catch
+                {
+                }
+            }
+        }
+
+        return new AppVersionInfo
+        {
+            Version = GetCurrentVersion(),
+            Codename = "Administrate"
+        };
+}
+
+
+}

LanMountainDesktop.Launcher/Services/FlexibleHostLocator.cs

@@ -0,0 +1,629 @@
+using System.Diagnostics;
+using System.Text.Json;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+    /// 灵活的主程序定位器
+    /// </summary>
+    internal sealed class FlexibleHostLocator
+    {
+        private readonly HostDiscoveryOptions _options;
+        private readonly string _appRoot;
+        private readonly DeploymentLocator _deploymentLocator;
+
+        public FlexibleHostLocator(string appRoot, HostDiscoveryOptions? options = null)
+        {
+            _appRoot = appRoot;
+            _options = options ?? new HostDiscoveryOptions();
+            _deploymentLocator = new DeploymentLocator(appRoot);
+        }
+
+        /// <summary>
+        /// 解析主程序可执行文件路径
+        /// </summary>
+        public string? ResolveHostExecutablePath()
+        {
+            var executable = GetExecutableName();
+            var searchContext = new SearchContext
+            {
+                ExecutableName = executable,
+                AppRoot = _appRoot,
+                Options = _options
+            };
+
+            // ========== 第一阶段：标准路径查找（快速路径）==========
+            
+            // 1. 检查环境变量指定的路径（最高优先级 - 用于调试和特殊场景）
+            var envPath = GetPathFromEnvironment();
+            if (!string.IsNullOrWhiteSpace(envPath))
+            {
+                var validated = ValidateAndReturn(envPath, "environment variable");
+                if (validated != null) return validated;
+            }
+
+            // 2. 使用 DeploymentLocator（ClassIsland 风格的简洁查询 - 优先）
+            Console.WriteLine("[FlexibleHostLocator] Trying quick path: DeploymentLocator.FindCurrentDeploymentDirectory()");
+            var deploymentDir = _deploymentLocator.FindCurrentDeploymentDirectory();
+            if (!string.IsNullOrWhiteSpace(deploymentDir))
+            {
+                var deploymentExePath = Path.Combine(deploymentDir, executable);
+                if (File.Exists(deploymentExePath))
+                {
+                    Console.WriteLine($"[FlexibleHostLocator] Quick path found: {deploymentExePath}");
+                    return deploymentExePath;
+                }
+                Console.WriteLine($"[FlexibleHostLocator] Quick path found dir but no exe: {deploymentExePath}");
+            }
+
+            // 3. 快速路径失败，尝试旧的 SearchDeploymentDirectories 作为 fallback
+            Console.WriteLine("[FlexibleHostLocator] Quick path failed, falling back to SearchDeploymentDirectories");
+            var deploymentPath = SearchDeploymentDirectories(searchContext);
+            if (!string.IsNullOrWhiteSpace(deploymentPath))
+            {
+                return deploymentPath;
+            }
+
+        // 4. 检查 Launcher 同级目录（便携模式）
+        var portablePath = SearchPortableLocation(searchContext);
+        if (!string.IsNullOrWhiteSpace(portablePath))
+        {
+            return portablePath;
+        }
+
+        // ========== 第二阶段：灵活查找（标准路径找不到时）==========
+        
+        // 5. 检查配置文件中的路径 - 用户自定义配置
+        var configPath = GetPathFromConfigFile();
+        if (!string.IsNullOrWhiteSpace(configPath))
+        {
+            var validated = ValidateAndReturn(configPath, "config file");
+            if (validated != null) return validated;
+        }
+
+        // 5. 搜索附近目录（向上、向下各一层）
+        var nearbyPath = SearchNearbyDirectories(searchContext);
+        if (!string.IsNullOrWhiteSpace(nearbyPath))
+        {
+            return nearbyPath;
+        }
+
+        // 7. 开发模式：检查保存的自定义路径
+        if (_options.PreferDevModeConfig && Views.ErrorWindow.CheckDevModeEnabled())
+        {
+            var savedPath = Views.ErrorWindow.GetSavedCustomHostPath();
+            if (!string.IsNullOrWhiteSpace(savedPath))
+            {
+                var validated = ValidateAndReturn(savedPath, "saved dev mode path");
+                if (validated != null) return validated;
+            }
+        }
+
+        // 8. 搜索标准开发路径
+        var devPath = SearchDevelopmentPaths(searchContext);
+        if (!string.IsNullOrWhiteSpace(devPath))
+        {
+            return devPath;
+        }
+
+        // 9. 搜索额外的配置路径
+        var additionalPath = SearchAdditionalPaths(searchContext);
+        if (!string.IsNullOrWhiteSpace(additionalPath))
+        {
+            return additionalPath;
+        }
+
+        // 10. 递归搜索（如果启用）
+        if (_options.RecursiveSearch)
+        {
+            var recursivePath = SearchRecursively(searchContext);
+            if (!string.IsNullOrWhiteSpace(recursivePath))
+            {
+                return recursivePath;
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 从环境变量获取路径
+    /// </summary>
+    private string? GetPathFromEnvironment()
+    {
+        if (string.IsNullOrWhiteSpace(_options.CustomPathEnvVar))
+        {
+            return null;
+        }
+
+        var path = Environment.GetEnvironmentVariable(_options.CustomPathEnvVar);
+        return path;
+    }
+
+    /// <summary>
+    /// 从配置文件获取路径
+    /// </summary>
+    private string? GetPathFromConfigFile()
+    {
+        if (string.IsNullOrWhiteSpace(_options.ConfigFileName))
+        {
+            return null;
+        }
+
+        var configPath = Path.Combine(_appRoot, _options.ConfigFileName);
+        if (!File.Exists(configPath))
+        {
+            return null;
+        }
+
+        try
+        {
+            var json = File.ReadAllText(configPath);
+            var config = JsonSerializer.Deserialize(json, AppJsonContext.Default.HostDiscoveryConfig);
+            if (config?.HostPath != null && File.Exists(config.HostPath))
+            {
+                return config.HostPath;
+            }
+        }
+        catch
+        {
+            // 忽略配置文件读取错误
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 搜索部署目录
+    /// </summary>
+    private string? SearchDeploymentDirectories(SearchContext context)
+    {
+        if (!Directory.Exists(_appRoot))
+        {
+            return null;
+        }
+
+        try
+        {
+            // 查找 app-* 目录
+            var appDirs = Directory.GetDirectories(_appRoot, "app-*", SearchOption.TopDirectoryOnly)
+                .Where(dir => !File.Exists(Path.Combine(dir, ".destroy")))
+                .Where(dir => !File.Exists(Path.Combine(dir, ".partial")))
+                .ToList();
+
+            // 优先选择带 .current 标记的
+            var currentMarked = appDirs
+                .Where(dir => File.Exists(Path.Combine(dir, ".current")))
+                .Select(dir => Path.Combine(dir, context.ExecutableName))
+                .FirstOrDefault(File.Exists);
+
+            if (currentMarked != null)
+            {
+                return currentMarked;
+            }
+
+            // 选择版本号最高的
+            var latest = appDirs
+                .Select(dir => new
+                {
+                    Dir = dir,
+                    Version = ParseVersionFromDirectoryName(dir)
+                })
+                .OrderByDescending(x => x.Version)
+                .Select(x => Path.Combine(x.Dir, context.ExecutableName))
+                .FirstOrDefault(File.Exists);
+
+            return latest;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// 搜索便携模式位置（Launcher 同级目录）
+    /// </summary>
+    private string? SearchPortableLocation(SearchContext context)
+    {
+        try
+        {
+            var launcherDir = AppContext.BaseDirectory;
+            var portablePath = Path.Combine(launcherDir, context.ExecutableName);
+            
+            if (File.Exists(portablePath))
+            {
+                return portablePath;
+            }
+        }
+        catch
+        {
+            // 忽略错误
+        }
+        return null;
+    }
+
+    /// <summary>
+    /// 搜索附近目录（灵活查找，适用于各种部署场景）
+    /// </summary>
+    private string? SearchNearbyDirectories(SearchContext context)
+    {
+        try
+        {
+            var searchDirs = new List<string>();
+            
+            // Launcher 所在目录
+            var launcherDir = AppContext.BaseDirectory;
+            searchDirs.Add(launcherDir);
+            
+            // 上级目录
+            var parentDir = Path.GetFullPath(Path.Combine(launcherDir, ".."));
+            if (Directory.Exists(parentDir))
+            {
+                searchDirs.Add(parentDir);
+            }
+            
+            // 上上级目录
+            var grandparentDir = Path.GetFullPath(Path.Combine(launcherDir, "..", ".."));
+            if (Directory.Exists(grandparentDir))
+            {
+                searchDirs.Add(grandparentDir);
+            }
+            
+            // AppRoot 及其上级
+            if (!string.IsNullOrWhiteSpace(_appRoot) && Directory.Exists(_appRoot))
+            {
+                searchDirs.Add(_appRoot);
+                var appParent = Path.GetFullPath(Path.Combine(_appRoot, ".."));
+                if (Directory.Exists(appParent))
+                {
+                    searchDirs.Add(appParent);
+                }
+            }
+            
+            // 去重后搜索
+            foreach (var dir in searchDirs.Distinct(StringComparer.OrdinalIgnoreCase))
+            {
+                // 直接搜索
+                var directPath = Path.Combine(dir, context.ExecutableName);
+                if (File.Exists(directPath))
+                {
+                    return directPath;
+                }
+                
+                // 搜索子目录（一层）
+                if (Directory.Exists(dir))
+                {
+                    foreach (var subDir in Directory.GetDirectories(dir))
+                    {
+                        var subPath = Path.Combine(subDir, context.ExecutableName);
+                        if (File.Exists(subPath))
+                        {
+                            return subPath;
+                        }
+                    }
+                }
+            }
+        }
+        catch
+        {
+            // 忽略搜索错误
+        }
+        
+        return null;
+    }
+
+    /// <summary>
+    /// 搜索开发路径
+    /// </summary>
+    private string? SearchDevelopmentPaths(SearchContext context)
+    {
+        // 获取 Launcher 所在目录
+        var launcherDir = AppContext.BaseDirectory;
+
+        // 动态构建可能的开发路径（支持不同的项目结构）
+        var possiblePaths = new List<string>();
+
+        // 从解决方案根目录搜索（支持不同的解决方案结构）
+        var solutionRoot = FindSolutionRoot(launcherDir);
+        if (!string.IsNullOrWhiteSpace(solutionRoot))
+        {
+            // 搜索所有可能的 bin 目录
+            possiblePaths.AddRange(SearchBinDirectories(solutionRoot, context.ExecutableName));
+        }
+
+        // 添加硬编码的备用路径
+        possiblePaths.AddRange(new[]
+        {
+            Path.Combine(launcherDir, "..", "..", "LanMountainDesktop", "bin", "Debug", "net10.0", context.ExecutableName),
+            Path.Combine(launcherDir, "..", "..", "LanMountainDesktop", "bin", "Release", "net10.0", context.ExecutableName),
+            Path.Combine(launcherDir, "..", "LanMountainDesktop", "bin", "Debug", "net10.0", context.ExecutableName),
+            Path.Combine(launcherDir, "..", "LanMountainDesktop", "bin", "Release", "net10.0", context.ExecutableName),
+        });
+
+        foreach (var path in possiblePaths.Select(Path.GetFullPath).Distinct())
+        {
+            if (File.Exists(path))
+            {
+                return path;
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 搜索额外的配置路径
+    /// </summary>
+    private string? SearchAdditionalPaths(SearchContext context)
+    {
+        if (_options.AdditionalSearchPaths == null || !_options.AdditionalSearchPaths.Any())
+        {
+            return null;
+        }
+
+        foreach (var pattern in _options.AdditionalSearchPaths)
+        {
+            try
+            {
+                // 替换变量
+                var expandedPattern = ExpandVariables(pattern);
+
+                // 支持通配符
+                if (expandedPattern.Contains('*') || expandedPattern.Contains('?'))
+                {
+                    var dir = Path.GetDirectoryName(expandedPattern) ?? _appRoot;
+                    var filePattern = Path.GetFileName(expandedPattern);
+
+                    if (Directory.Exists(dir))
+                    {
+                        var matches = Directory.GetFiles(dir, filePattern, SearchOption.TopDirectoryOnly);
+                        var validMatch = matches.FirstOrDefault(File.Exists);
+                        if (validMatch != null)
+                        {
+                            return validMatch;
+                        }
+                    }
+                }
+                else if (File.Exists(expandedPattern))
+                {
+                    return expandedPattern;
+                }
+            }
+            catch
+            {
+                // 忽略搜索错误
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 递归搜索
+    /// </summary>
+    private string? SearchRecursively(SearchContext context)
+    {
+        try
+        {
+            var searchDirs = new[] { _appRoot, Path.GetFullPath(Path.Combine(_appRoot, "..")) };
+
+            foreach (var searchDir in searchDirs.Where(Directory.Exists))
+            {
+                var result = SearchDirectoryRecursively(searchDir, context.ExecutableName, 0);
+                if (result != null)
+                {
+                    return result;
+                }
+            }
+        }
+        catch
+        {
+            // 忽略递归搜索错误
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 递归搜索目录
+    /// </summary>
+    private string? SearchDirectoryRecursively(string dir, string executableName, int depth)
+    {
+        if (depth > _options.MaxRecursionDepth)
+        {
+            return null;
+        }
+
+        try
+        {
+            // 检查当前目录
+            var directPath = Path.Combine(dir, executableName);
+            if (File.Exists(directPath))
+            {
+                return directPath;
+            }
+
+            // 检查子目录
+            foreach (var subDir in Directory.GetDirectories(dir))
+            {
+                // 跳过某些目录
+                var dirName = Path.GetFileName(subDir).ToLowerInvariant();
+                if (dirName is ".git" or "node_modules" or ".vs" or "obj" or ".launcher")
+                {
+                    continue;
+                }
+
+                var result = SearchDirectoryRecursively(subDir, executableName, depth + 1);
+                if (result != null)
+                {
+                    return result;
+                }
+            }
+        }
+        catch
+        {
+            // 忽略访问错误
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 查找解决方案根目录
+    /// </summary>
+    private string? FindSolutionRoot(string startDir)
+    {
+        var current = new DirectoryInfo(startDir);
+        while (current != null)
+        {
+            // 查找 .sln 文件
+            if (current.GetFiles("*.sln").Any())
+            {
+                return current.FullName;
+            }
+
+            // 查找 .git 目录作为备选
+            if (current.GetDirectories(".git").Any())
+            {
+                return current.FullName;
+            }
+
+            current = current.Parent;
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 搜索 bin 目录
+    /// </summary>
+    private IEnumerable<string> SearchBinDirectories(string root, string executableName)
+    {
+        var results = new List<string>();
+
+        try
+        {
+            // 查找所有 bin 目录
+            var binDirs = Directory.GetDirectories(root, "bin", SearchOption.AllDirectories);
+
+            foreach (var binDir in binDirs)
+            {
+                // 检查 Debug 和 Release 子目录
+                var configDirs = new[] { "Debug", "Release" };
+                foreach (var config in configDirs)
+                {
+                    var configPath = Path.Combine(binDir, config);
+                    if (Directory.Exists(configPath))
+                    {
+                        // 检查所有 net* 子目录
+                        var frameworkDirs = Directory.GetDirectories(configPath, "net*");
+                        foreach (var fwDir in frameworkDirs)
+                        {
+                            var exePath = Path.Combine(fwDir, executableName);
+                            if (File.Exists(exePath))
+                            {
+                                results.Add(exePath);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        catch
+        {
+            // 忽略搜索错误
+        }
+
+        return results;
+    }
+
+    /// <summary>
+    /// 验证路径并返回
+    /// </summary>
+    private string? ValidateAndReturn(string path, string source)
+    {
+        if (File.Exists(path))
+        {
+            Debug.WriteLine($"Found host executable from {source}: {path}");
+            return path;
+        }
+
+        // 尝试添加 .exe（Windows）
+        if (OperatingSystem.IsWindows() && !path.EndsWith(".exe", StringComparison.OrdinalIgnoreCase))
+        {
+            var withExe = path + ".exe";
+            if (File.Exists(withExe))
+            {
+                Debug.WriteLine($"Found host executable from {source}: {withExe}");
+                return withExe;
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 获取可执行文件名
+    /// </summary>
+    private string GetExecutableName()
+    {
+        var name = _options.ExecutableName;
+        if (OperatingSystem.IsWindows() && !name.EndsWith(".exe", StringComparison.OrdinalIgnoreCase))
+        {
+            name += ".exe";
+        }
+        return name;
+    }
+
+    /// <summary>
+    /// 展开路径变量
+    /// </summary>
+    private string ExpandVariables(string path)
+    {
+        return path
+            .Replace("${AppRoot}", _appRoot)
+            .Replace("${BaseDirectory}", AppContext.BaseDirectory)
+            .Replace("${UserProfile}", Environment.GetFolderPath(Environment.SpecialFolder.UserProfile))
+            .Replace("${LocalAppData}", Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData));
+    }
+
+    /// <summary>
+    /// 从目录名解析版本
+    /// </summary>
+    private static Version ParseVersionFromDirectoryName(string path)
+    {
+        var fileName = Path.GetFileName(path);
+        if (string.IsNullOrWhiteSpace(fileName))
+        {
+            return new Version(0, 0, 0);
+        }
+
+        var segments = fileName.Split('-');
+        if (segments.Length < 2)
+        {
+            return new Version(0, 0, 0);
+        }
+
+        return Version.TryParse(segments[1], out var version) ? version : new Version(0, 0, 0);
+    }
+
+    /// <summary>
+    /// 搜索上下文
+    /// </summary>
+    private class SearchContext
+    {
+        public required string ExecutableName { get; set; }
+        public required string AppRoot { get; set; }
+        public required HostDiscoveryOptions Options { get; set; }
+    }
+}
+
+/// <summary>
+/// 发现配置文件
+/// </summary>
+internal class HostDiscoveryConfig
+{
+    public string? HostPath { get; set; }
+    public List<string>? AdditionalPaths { get; set; }
+}

LanMountainDesktop.Launcher/Services/HostDiscoveryOptions.cs

@@ -0,0 +1,47 @@
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 主程序发现选项
+/// </summary>
+public sealed class HostDiscoveryOptions
+{
+    /// <summary>
+    /// 可执行文件名（Windows 下自动添加 .exe）
+    /// </summary>
+    public string ExecutableName { get; set; } = "LanMountainDesktop";
+
+    /// <summary>
+    /// 额外的搜索路径（支持通配符）
+    /// </summary>
+    public List<string> AdditionalSearchPaths { get; set; } = new();
+
+    /// <summary>
+    /// 是否递归搜索子目录
+    /// </summary>
+    public bool RecursiveSearch { get; set; } = false;
+
+    /// <summary>
+    /// 递归搜索的最大深度
+    /// </summary>
+    public int MaxRecursionDepth { get; set; } = 3;
+
+    /// <summary>
+    /// 环境变量名称，用于指定自定义路径
+    /// </summary>
+    public string? CustomPathEnvVar { get; set; } = "LMD_HOST_PATH";
+
+    /// <summary>
+    /// 配置文件路径（相对于 app root）
+    /// </summary>
+    public string? ConfigFileName { get; set; } = "host-discovery.json";
+
+    /// <summary>
+    /// 是否优先使用开发模式配置
+    /// </summary>
+    public bool PreferDevModeConfig { get; set; } = true;
+
+    /// <summary>
+    /// 搜索超时（毫秒）
+    /// </summary>
+    public int SearchTimeoutMs { get; set; } = 5000;
+}

LanMountainDesktop.Launcher/Services/HostResolutionResult.cs

@@ -0,0 +1,18 @@
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class HostResolutionResult
+{
+    public bool Success { get; init; }
+
+    public string? ResolvedHostPath { get; init; }
+
+    public string? ResolutionSource { get; init; }
+
+    public string AppRoot { get; init; } = string.Empty;
+
+    public string? ExplicitAppRoot { get; init; }
+
+    public bool DevModeConfigIgnored { get; init; }
+
+    public List<string> SearchedPaths { get; init; } = [];
+}

LanMountainDesktop.Launcher/Services/IOobeStep.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.Launcher.Services;
+
+internal interface IOobeStep
+{
+    Task RunAsync(CancellationToken cancellationToken);
+}

LanMountainDesktop.Launcher/Services/ISplashStageReporter.cs

@@ -0,0 +1,11 @@
+namespace LanMountainDesktop.Launcher.Services;
+
+internal interface ISplashStageReporter
+{
+    void Report(string stage, string message);
+    
+    /// <summary>
+    /// 报告阶段和进度（0-100）
+    /// </summary>
+    void ReportStage(string stage, int progress);
+}

LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs

@@ -0,0 +1,192 @@
+using System.Buffers;
+using System.IO.Pipes;
+using System.Text.Json;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Launcher.Services.Ipc;
+
+/// <summary>
+/// Launcher IPC 服务端 - 接收主程序的启动进度报告
+/// 采用持久连接 + 长度前缀协议，支持客户端在同一连接上多次发送消息。
+/// 跨平台实现：Windows 使用命名管道，Linux/macOS 使用 Unix 域套接字
+/// </summary>
+public class LauncherIpcServer : IDisposable
+{
+    private readonly CancellationTokenSource _cts = new();
+    private readonly Action<StartupProgressMessage> _onProgress;
+    private Task? _listenTask;
+    private NamedPipeServerStream? _currentPipe;
+
+    /// <summary>
+    /// 协议：每条消息以 4 字节小端 int32 长度前缀开头，后跟 UTF-8 JSON 正文。
+    /// 这在 Windows Message 模式和 Unix Byte 模式下均能可靠工作。
+    /// </summary>
+    private const int LengthPrefixSize = 4;
+
+    public LauncherIpcServer(Action<StartupProgressMessage> onProgress)
+    {
+        _onProgress = onProgress;
+    }
+
+    /// <summary>
+    /// 启动 IPC 服务端监听
+    /// </summary>
+    public void Start()
+    {
+        _listenTask = Task.Run(ListenLoopAsync, _cts.Token);
+    }
+
+    private async Task ListenLoopAsync()
+    {
+        while (!_cts.Token.IsCancellationRequested)
+        {
+            NamedPipeServerStream? pipe = null;
+            try
+            {
+                pipe = new NamedPipeServerStream(
+                    LauncherIpcConstants.PipeName,
+                    PipeDirection.In,
+                    1,
+                    PipeTransmissionMode.Byte);
+
+                _currentPipe = pipe;
+                await pipe.WaitForConnectionAsync(_cts.Token);
+
+                // 持久连接：在同一连接上循环读取多条消息，直到客户端断开
+                await ReadMessagesFromConnectionAsync(pipe, _cts.Token);
+            }
+            catch (OperationCanceledException)
+            {
+                break;
+            }
+            catch (IOException)
+            {
+                // 客户端断开连接，继续等待新连接
+                continue;
+            }
+            catch (ObjectDisposedException)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"IPC listen error: {ex.Message}");
+                try
+                {
+                    await Task.Delay(200, _cts.Token);
+                }
+                catch (OperationCanceledException)
+                {
+                    break;
+                }
+            }
+            finally
+            {
+                try
+                {
+                    pipe?.Dispose();
+                }
+                catch { }
+
+                if (ReferenceEquals(_currentPipe, pipe))
+                {
+                    _currentPipe = null;
+                }
+            }
+        }
+    }
+
+    /// <summary>
+    /// 从已连接的管道中持续读取消息，直到连接断开或取消
+    /// </summary>
+    private async Task ReadMessagesFromConnectionAsync(NamedPipeServerStream pipe, CancellationToken cancellationToken)
+    {
+        var lengthBuffer = ArrayPool<byte>.Shared.Rent(LengthPrefixSize);
+        try
+        {
+            while (pipe.IsConnected && !cancellationToken.IsCancellationRequested)
+            {
+                // 1. 读取 4 字节长度前缀
+                var totalRead = 0;
+                while (totalRead < LengthPrefixSize)
+                {
+                    var read = await pipe.ReadAsync(lengthBuffer.AsMemory(totalRead, LengthPrefixSize - totalRead), cancellationToken);
+                    if (read == 0)
+                    {
+                        // 连接已关闭
+                        return;
+                    }
+                    totalRead += read;
+                }
+
+                var payloadLength = BitConverter.ToInt32(lengthBuffer, 0);
+                if (payloadLength <= 0 || payloadLength > 1024 * 1024) // 最大 1MB 单条消息
+                {
+                    // 无效长度，跳过此连接
+                    return;
+                }
+
+                // 2. 读取消息正文
+                var payloadBuffer = ArrayPool<byte>.Shared.Rent(payloadLength);
+                try
+                {
+                    totalRead = 0;
+                    while (totalRead < payloadLength)
+                    {
+                        var read = await pipe.ReadAsync(payloadBuffer.AsMemory(totalRead, payloadLength - totalRead), cancellationToken);
+                        if (read == 0)
+                        {
+                            return;
+                        }
+                        totalRead += read;
+                    }
+
+                    // 3. 反序列化并回调
+                    var json = System.Text.Encoding.UTF8.GetString(payloadBuffer, 0, payloadLength);
+                    var message = JsonSerializer.Deserialize(json, AppJsonContext.Default.StartupProgressMessage);
+                    if (message is not null)
+                    {
+                        _onProgress(message);
+                    }
+                }
+                catch (JsonException)
+                {
+                    // 忽略解析错误，继续读取下一条消息
+                }
+                finally
+                {
+                    ArrayPool<byte>.Shared.Return(payloadBuffer);
+                }
+            }
+        }
+        finally
+        {
+            ArrayPool<byte>.Shared.Return(lengthBuffer);
+        }
+    }
+
+    /// <summary>
+    /// 停止 IPC 服务端
+    /// </summary>
+    public void Stop()
+    {
+        _cts.Cancel();
+        try
+        {
+            _currentPipe?.Dispose();
+        }
+        catch { }
+    }
+
+    public void Dispose()
+    {
+        Stop();
+        _cts.Dispose();
+
+        try
+        {
+            _listenTask?.Wait(TimeSpan.FromSeconds(2));
+        }
+        catch { }
+    }
+}

LanMountainDesktop.Launcher/Services/LauncherExecutionContext.cs

@@ -0,0 +1,30 @@
+using System.Security.Principal;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal static class LauncherExecutionContext
+{
+    public static LauncherExecutionSnapshot Capture()
+    {
+        var userName = Environment.UserName ?? string.Empty;
+        if (!OperatingSystem.IsWindows())
+        {
+            return new LauncherExecutionSnapshot(false, userName, null);
+        }
+
+        try
+        {
+            using var identity = WindowsIdentity.GetCurrent();
+            var principal = new WindowsPrincipal(identity);
+            return new LauncherExecutionSnapshot(
+                principal.IsInRole(WindowsBuiltInRole.Administrator),
+                userName,
+                identity.User?.Value);
+        }
+        catch
+        {
+            return new LauncherExecutionSnapshot(false, userName, null);
+        }
+    }
+}

LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs

@@ -0,0 +1,944 @@
+using System.Diagnostics;
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Launcher.Services.Ipc;
+using LanMountainDesktop.Launcher.Views;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class LauncherFlowCoordinator
+{
+    private static readonly string[] LauncherOnlyOptions =
+    [
+        "debug", "show-loading-details", "plugins-dir", "source", "result",
+        "app-root", "launch-source",
+        LauncherIpcConstants.LauncherPidEnvVar,
+        LauncherIpcConstants.PackageRootEnvVar,
+        LauncherIpcConstants.VersionEnvVar,
+        LauncherIpcConstants.CodenameEnvVar
+    ];
+
+    private readonly CommandContext _context;
+    private readonly DeploymentLocator _deploymentLocator;
+    private readonly OobeStateService _oobeStateService;
+    private readonly UpdateEngineService _updateEngine;
+    private readonly PluginInstallerService _pluginInstallerService;
+    private readonly IReadOnlyList<IOobeStep> _oobeSteps;
+
+    public LauncherFlowCoordinator(
+        CommandContext context,
+        DeploymentLocator deploymentLocator,
+        OobeStateService oobeStateService,
+        UpdateEngineService updateEngine,
+        PluginInstallerService pluginInstallerService)
+    {
+        _context = context;
+        _deploymentLocator = deploymentLocator;
+        _oobeStateService = oobeStateService;
+        _updateEngine = updateEngine;
+        _pluginInstallerService = pluginInstallerService;
+        _oobeSteps = [new WelcomeOobeStep(_oobeStateService, _context)];
+    }
+
+    public async Task<LauncherResult> RunAsync(SplashWindow? existingSplashWindow = null)
+    {
+        try
+        {
+            _deploymentLocator.CleanupOldDeployments(minVersionsToKeep: 3);
+            var oobeDecision = _oobeStateService.Evaluate(_context);
+            var launcherContextDetails = BuildLauncherContextDetails(_context, oobeDecision, _deploymentLocator.GetAppRoot());
+
+            if (oobeDecision.ShouldShowOobe)
+            {
+                var legacyInfo = LegacyVersionDetector.DetectLegacyInstallation();
+                if (legacyInfo is not null)
+                {
+                    var migrationResult = await ShowMigrationPromptAsync(legacyInfo).ConfigureAwait(false);
+                    Logger.Info($"Migration prompt completed. Result='{migrationResult}'.");
+                }
+            }
+
+            var splashWindow = existingSplashWindow ?? await Dispatcher.UIThread.InvokeAsync(() =>
+            {
+                var window = new SplashWindow();
+                window.Show();
+                return window;
+            });
+            var reporter = (ISplashStageReporter)splashWindow;
+
+            LoadingDetailsWindow? loadingDetailsWindow = null;
+            if (_context.IsDebugMode || _context.GetOption("show-loading-details") == "true")
+            {
+                await Dispatcher.UIThread.InvokeAsync(() =>
+                {
+                    loadingDetailsWindow = new LoadingDetailsWindow();
+                    loadingDetailsWindow.Show();
+                });
+            }
+
+            var visibilityTcs = new TaskCompletionSource<StartupStage>(TaskCreationOptions.RunContinuationsAsynchronously);
+            var activationFailedTcs = new TaskCompletionSource<string>(TaskCreationOptions.RunContinuationsAsynchronously);
+            var lastStage = StartupStage.Initializing;
+            var lastStageMessage = "launcher-started";
+
+            var loadingState = new LoadingStateMessage();
+            using var ipcServer = new LauncherIpcServer(message =>
+            {
+                Dispatcher.UIThread.Post(() =>
+                {
+                    try
+                    {
+                        lastStage = message.Stage;
+                        lastStageMessage = message.Message ?? string.Empty;
+                        Logger.Info($"IPC stage received. Stage='{message.Stage}'; Message='{message.Message ?? string.Empty}'.");
+
+                        loadingState = loadingState with
+                        {
+                            Stage = message.Stage,
+                            OverallProgressPercent = message.ProgressPercent,
+                            Message = message.Message,
+                            Timestamp = DateTimeOffset.UtcNow
+                        };
+
+                        reporter.Report(MapStartupStageToSplashStage(message.Stage), message.Message ?? message.Stage.ToString());
+                        loadingDetailsWindow?.UpdateLoadingState(loadingState);
+
+                        switch (message.Stage)
+                        {
+                            case StartupStage.DesktopVisible:
+                            case StartupStage.ActivationRedirected:
+                                visibilityTcs.TrySetResult(message.Stage);
+                                break;
+                            case StartupStage.ActivationFailed:
+                                activationFailedTcs.TrySetResult(message.Message ?? "activation_failed");
+                                break;
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Logger.Error("IPC progress callback failed.", ex);
+                    }
+                });
+            });
+            ipcServer.Start();
+
+            try
+            {
+                reporter.Report("update", "Checking updates...");
+                var updateResult = await _updateEngine.ApplyPendingUpdateAsync().ConfigureAwait(false);
+                if (!updateResult.Success)
+                {
+                    return WithAdditionalDetails(updateResult, launcherContextDetails);
+                }
+
+                reporter.Report("plugins", "Applying plugin upgrades...");
+                var pluginsDir = _context.GetOption("plugins-dir") ?? Path.Combine(_deploymentLocator.GetAppRoot(), "plugins");
+                var queueResult = new PluginUpgradeQueueService(_pluginInstallerService).ApplyPendingUpgrades(pluginsDir);
+                if (!queueResult.Success)
+                {
+                    return WithAdditionalDetails(queueResult, launcherContextDetails);
+                }
+
+                if (oobeDecision.ShouldShowOobe)
+                {
+                    await Dispatcher.UIThread.InvokeAsync(() => splashWindow.Hide());
+                    foreach (var step in _oobeSteps)
+                    {
+                        await step.RunAsync(CancellationToken.None).ConfigureAwait(false);
+                    }
+
+                    await Dispatcher.UIThread.InvokeAsync(() => splashWindow.Show());
+                }
+
+                reporter.Report("launch", "Launching desktop...");
+                var launchOutcome = await LaunchHostWithIpcAsync().ConfigureAwait(false);
+                if (!launchOutcome.Result.Success)
+                {
+                    return WithAdditionalDetails(launchOutcome.Result, launcherContextDetails);
+                }
+
+                if (launchOutcome.ImmediateResult is not null)
+                {
+                    await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                    return WithAdditionalDetails(launchOutcome.ImmediateResult, launcherContextDetails);
+                }
+
+                if (launchOutcome.Process is null)
+                {
+                    return BuildResult(
+                        success: false,
+                        stage: "launch",
+                        code: "host_start_failed",
+                        message: "Host launch did not create a process.",
+                        details: MergeDetails(launcherContextDetails, launchOutcome.Details));
+                }
+
+                var processExitTask = launchOutcome.Process.WaitForExitAsync();
+                var completedTask = await Task.WhenAny(
+                    visibilityTcs.Task,
+                    activationFailedTcs.Task,
+                    processExitTask,
+                    Task.Delay(TimeSpan.FromSeconds(30))).ConfigureAwait(false);
+
+                if (completedTask == visibilityTcs.Task)
+                {
+                    var stage = await visibilityTcs.Task.ConfigureAwait(false);
+                    await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                    return BuildResult(
+                        success: true,
+                        stage: "launch",
+                        code: stage == StartupStage.ActivationRedirected ? "activation_redirected" : "ok",
+                        message: stage == StartupStage.ActivationRedirected
+                            ? "Launcher activation was redirected to the existing desktop instance."
+                            : "Desktop is visible and ready.",
+                        details: MergeDetails(launcherContextDetails, launchOutcome.Details));
+                }
+
+                if (completedTask == activationFailedTcs.Task)
+                {
+                    Logger.Warn($"Activation failure received before desktop visibility. Reason='{await activationFailedTcs.Task.ConfigureAwait(false)}'.");
+                    var retryOutcome = await RetryActivationAfterEarlyFailureAsync().ConfigureAwait(false);
+                    if (retryOutcome is not null)
+                    {
+                        await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                        return WithAdditionalDetails(retryOutcome, launcherContextDetails);
+                    }
+                }
+
+                if (completedTask == processExitTask)
+                {
+                    var exitCode = launchOutcome.Process.ExitCode;
+                    Logger.Warn($"Host exited before desktop became visible. ExitCode={exitCode}.");
+
+                    if (exitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired)
+                    {
+                        var retryOutcome = await RetryActivationAfterEarlyFailureAsync().ConfigureAwait(false);
+                        if (retryOutcome is not null)
+                        {
+                            await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                            return WithAdditionalDetails(retryOutcome, launcherContextDetails);
+                        }
+                    }
+
+                    await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                    return BuildResult(
+                        success: false,
+                        stage: "launch",
+                        code: exitCode == HostExitCodes.SecondaryActivationSucceeded ? "activation_redirected" : "host_exited_early",
+                        message: exitCode == HostExitCodes.SecondaryActivationSucceeded
+                            ? "Host redirected activation to the existing desktop instance."
+                            : $"Host exited before the desktop became visible. ExitCode={exitCode}.",
+                        details: MergeDetails(launcherContextDetails, MergeDetails(launchOutcome.Details, new Dictionary<string, string>
+                        {
+                            ["exitCode"] = exitCode.ToString()
+                        })));
+                }
+
+                await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
+                return BuildResult(
+                    success: false,
+                    stage: "launch",
+                    code: "desktop_not_visible",
+                    message: "Host process started, but the desktop never became visible within 30 seconds.",
+                    details: MergeDetails(launcherContextDetails, MergeDetails(launchOutcome.Details, new Dictionary<string, string>
+                    {
+                        ["ipcStage"] = lastStage.ToString(),
+                        ["ipcMessage"] = lastStageMessage
+                    })));
+            }
+            finally
+            {
+                await Dispatcher.UIThread.InvokeAsync(() =>
+                {
+                    try
+                    {
+                        if (splashWindow.IsVisible && splashWindow.IsLoaded)
+                        {
+                            splashWindow.Close();
+                            Logger.Info("Splash window closed in coordinator cleanup.");
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Logger.Error("Failed to close splash window during coordinator cleanup.", ex);
+                    }
+                });
+            }
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Launcher coordinator failed.", ex);
+            return BuildResult(
+                success: false,
+                stage: "launch",
+                code: "exception",
+                message: ex.Message,
+                details: BuildLauncherContextDetails(_context, _oobeStateService.Evaluate(_context), _deploymentLocator.GetAppRoot()),
+                errorMessage: ex.ToString());
+        }
+    }
+
+    private async Task<LauncherResult?> RetryActivationAfterEarlyFailureAsync()
+    {
+        Logger.Warn("Attempting one explicit activation retry after host early failure.");
+        var retryOutcome = await LaunchHostWithIpcAsync(forceDirectMode: true, retryTag: "explicit-activation-retry").ConfigureAwait(false);
+        if (!retryOutcome.Result.Success)
+        {
+            return retryOutcome.Result;
+        }
+
+        if (retryOutcome.ImmediateResult is not null)
+        {
+            return retryOutcome.ImmediateResult;
+        }
+
+        if (retryOutcome.Process is not null)
+        {
+            var retryExitTask = retryOutcome.Process.WaitForExitAsync();
+            var completed = await Task.WhenAny(retryExitTask, Task.Delay(TimeSpan.FromSeconds(15))).ConfigureAwait(false);
+
+            if (completed != retryExitTask)
+            {
+                return BuildResult(
+                    success: true,
+                    stage: "launch",
+                    code: "activation_retry_started",
+                    message: "Activation retry started the host successfully.",
+                    details: retryOutcome.Details);
+            }
+
+            if (retryOutcome.Process.ExitCode == HostExitCodes.SecondaryActivationSucceeded)
+            {
+                return BuildResult(
+                    success: true,
+                    stage: "launch",
+                    code: "activation_redirected",
+                    message: "Activation retry redirected to the existing desktop instance.",
+                    details: retryOutcome.Details);
+            }
+        }
+
+        return BuildResult(
+            success: false,
+            stage: "launch",
+            code: "activation_failed",
+            message: "Activation retry failed to make the desktop visible.",
+            details: retryOutcome.Details);
+    }
+
+    private static async Task CloseWindowsAsync(SplashWindow splashWindow, LoadingDetailsWindow? loadingDetailsWindow)
+    {
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                if (splashWindow.IsVisible && splashWindow.IsLoaded)
+                {
+                    splashWindow.Close();
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to close splash window.", ex);
+            }
+
+            try
+            {
+                if (loadingDetailsWindow is not null && loadingDetailsWindow.IsVisible)
+                {
+                    loadingDetailsWindow.Close();
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to close loading details window.", ex);
+            }
+        });
+    }
+
+    private async Task<HostLaunchOutcome> LaunchHostWithIpcAsync(bool forceDirectMode = false, string? retryTag = null)
+    {
+        var resolution = _deploymentLocator.ResolveHostExecutable(_context);
+        if (!resolution.Success || string.IsNullOrWhiteSpace(resolution.ResolvedHostPath))
+        {
+            var (errorResult, selectedPath) = await ShowHostNotFoundErrorAsync().ConfigureAwait(false);
+            if (errorResult == ErrorWindowResult.Retry)
+            {
+                if (!string.IsNullOrWhiteSpace(selectedPath) && File.Exists(selectedPath))
+                {
+                    return await LaunchHostWithExplicitPathAsync(selectedPath, forceDirectMode, retryTag).ConfigureAwait(false);
+                }
+
+                return await LaunchHostWithIpcAsync(forceDirectMode, retryTag).ConfigureAwait(false);
+            }
+
+            return HostLaunchOutcome.FromResult(BuildResult(
+                success: false,
+                stage: "launchHost",
+                code: "host_not_found",
+                message: "LanMountainDesktop host executable was not found.",
+                details: BuildResolutionDetails(resolution, null, null, "resolve")));
+        }
+
+        return await LaunchHostWithResolvedPathAsync(resolution, forceDirectMode, retryTag).ConfigureAwait(false);
+    }
+
+    private Task<HostLaunchOutcome> LaunchHostWithExplicitPathAsync(string hostPath, bool forceDirectMode, string? retryTag)
+    {
+        var resolution = new HostResolutionResult
+        {
+            Success = true,
+            ResolvedHostPath = Path.GetFullPath(hostPath),
+            ResolutionSource = "user_selected_path",
+            AppRoot = _deploymentLocator.GetAppRoot(),
+            ExplicitAppRoot = Path.GetDirectoryName(hostPath),
+            SearchedPaths = [Path.GetFullPath(hostPath)]
+        };
+
+        return LaunchHostWithResolvedPathAsync(resolution, forceDirectMode, retryTag);
+    }
+
+    private async Task<HostLaunchOutcome> LaunchHostWithResolvedPathAsync(
+        HostResolutionResult resolution,
+        bool forceDirectMode,
+        string? retryTag)
+    {
+        var hostPath = resolution.ResolvedHostPath!;
+        if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
+        {
+            EnsureExecutable(hostPath);
+        }
+
+        var hostWorkingDirectory = Path.GetDirectoryName(hostPath) ?? _deploymentLocator.GetAppRoot();
+        var versionInfo = _deploymentLocator.GetVersionInfo();
+        var forwardedArguments = BuildForwardedArguments(versionInfo);
+
+        var primaryMode = forceDirectMode || !OperatingSystem.IsWindows()
+            ? HostStartMode.Direct
+            : HostStartMode.ShellExecute;
+        var fallbackMode = primaryMode == HostStartMode.ShellExecute
+            ? HostStartMode.Direct
+            : (HostStartMode?)null;
+
+        var firstAttempt = await StartHostProcessAsync(hostPath, hostWorkingDirectory, forwardedArguments, versionInfo, primaryMode, retryTag).ConfigureAwait(false);
+        if (firstAttempt.ProcessCreated && !firstAttempt.ExitedEarly && firstAttempt.Process is not null)
+        {
+            var firstDetails = BuildResolutionDetails(resolution, firstAttempt, null, null);
+            return HostLaunchOutcome.FromProcess(
+                firstAttempt.Process,
+                BuildResult(true, "launchHost", "ok", "Host launched.", firstDetails),
+                firstDetails);
+        }
+
+        if (fallbackMode is null)
+        {
+            return BuildOutcomeFromAttempt(resolution, firstAttempt, null);
+        }
+
+        Logger.Warn(
+            $"Primary host start attempt failed. Retrying with fallback mode '{fallbackMode}'. " +
+            $"FailureReason='{firstAttempt.FailureReason ?? "unknown"}'; ExitCode='{firstAttempt.ExitCode?.ToString() ?? "<none>"}'.");
+
+        var secondAttempt = await StartHostProcessAsync(hostPath, hostWorkingDirectory, forwardedArguments, versionInfo, fallbackMode.Value, retryTag).ConfigureAwait(false);
+        if (secondAttempt.ProcessCreated && !secondAttempt.ExitedEarly && secondAttempt.Process is not null)
+        {
+            var details = BuildResolutionDetails(resolution, firstAttempt, secondAttempt, null);
+            return HostLaunchOutcome.FromProcess(
+                secondAttempt.Process,
+                BuildResult(true, "launchHost", "ok", "Host launched.", details),
+                details);
+        }
+
+        return BuildOutcomeFromAttempt(resolution, secondAttempt, firstAttempt);
+    }
+
+    private static HostLaunchOutcome BuildOutcomeFromAttempt(
+        HostResolutionResult resolution,
+        HostStartAttempt finalAttempt,
+        HostStartAttempt? previousAttempt)
+    {
+        var details = BuildResolutionDetails(
+            resolution,
+            previousAttempt ?? finalAttempt,
+            previousAttempt is null ? null : finalAttempt,
+            !finalAttempt.ProcessCreated
+                ? "start"
+                : finalAttempt.ExitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired
+                    ? "activation"
+                    : "early-exit");
+
+        if (!finalAttempt.ProcessCreated)
+        {
+            return HostLaunchOutcome.FromResult(BuildResult(
+                false,
+                "launchHost",
+                "host_start_failed",
+                $"Failed to start host using start mode '{finalAttempt.StartMode}'.",
+                details));
+        }
+
+        if (finalAttempt.ExitCode == HostExitCodes.SecondaryActivationSucceeded)
+        {
+            return HostLaunchOutcome.FromImmediateResult(BuildResult(
+                true,
+                "launch",
+                "activation_redirected",
+                "Launcher activation was redirected to the existing desktop instance.",
+                details));
+        }
+
+        if (finalAttempt.ExitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired)
+        {
+            return HostLaunchOutcome.FromResult(BuildResult(
+                false,
+                "launch",
+                "activation_failed",
+                $"Host activation handshake failed using start mode '{finalAttempt.StartMode}'.",
+                details));
+        }
+
+        return HostLaunchOutcome.FromResult(BuildResult(
+            false,
+            "launchHost",
+            "host_exited_early",
+            $"Host exited early using start mode '{finalAttempt.StartMode}'.",
+            details));
+    }
+
+    private async Task<HostStartAttempt> StartHostProcessAsync(
+        string hostPath,
+        string hostWorkingDirectory,
+        string arguments,
+        AppVersionInfo versionInfo,
+        HostStartMode startMode,
+        string? retryTag)
+    {
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = hostPath,
+            WorkingDirectory = hostWorkingDirectory,
+            Arguments = arguments,
+            UseShellExecute = startMode == HostStartMode.ShellExecute
+        };
+
+        if (startMode == HostStartMode.Direct)
+        {
+            startInfo.EnvironmentVariables[LauncherIpcConstants.LauncherPidEnvVar] = Environment.ProcessId.ToString();
+            startInfo.EnvironmentVariables[LauncherIpcConstants.PackageRootEnvVar] = _deploymentLocator.GetAppRoot();
+            startInfo.EnvironmentVariables[LauncherIpcConstants.VersionEnvVar] = versionInfo.Version;
+            startInfo.EnvironmentVariables[LauncherIpcConstants.CodenameEnvVar] = versionInfo.Codename;
+        }
+
+        try
+        {
+            var process = Process.Start(startInfo);
+            Logger.Info(
+                $"Host launch requested. Mode='{startMode}'; RetryTag='{retryTag ?? "<none>"}'; Path='{hostPath}'; " +
+                $"WorkingDir='{hostWorkingDirectory}'; Pid={(process is null ? -1 : process.Id)}; Args='{startInfo.Arguments}'.");
+
+            if (process is null)
+            {
+                return HostStartAttempt.StartFailed(startMode, "process_start_returned_null");
+            }
+
+            var exitTask = process.WaitForExitAsync();
+            var completed = await Task.WhenAny(exitTask, Task.Delay(TimeSpan.FromSeconds(2))).ConfigureAwait(false);
+            if (completed == exitTask)
+            {
+                return HostStartAttempt.EarlyExit(startMode, process, process.ExitCode);
+            }
+
+            return HostStartAttempt.Started(startMode, process);
+        }
+        catch (Exception ex)
+        {
+            Logger.Error($"Host start failed. Mode='{startMode}'.", ex);
+            return HostStartAttempt.StartFailed(startMode, ex.GetType().Name);
+        }
+    }
+
+    private string BuildForwardedArguments(AppVersionInfo versionInfo)
+    {
+        var arguments = new System.Text.StringBuilder();
+
+        for (var index = 0; index < _context.RawArgs.Count; index++)
+        {
+            var arg = _context.RawArgs[index];
+
+            if (arg == _context.Command || arg == _context.SubCommand)
+            {
+                continue;
+            }
+
+            if (arg.StartsWith("--", StringComparison.Ordinal))
+            {
+                var key = arg[2..];
+                var equalsIndex = key.IndexOf('=');
+                if (equalsIndex >= 0)
+                {
+                    key = key[..equalsIndex];
+                }
+
+                if (LauncherOnlyOptions.Contains(key, StringComparer.OrdinalIgnoreCase))
+                {
+                    if (equalsIndex < 0 &&
+                        index + 1 < _context.RawArgs.Count &&
+                        !_context.RawArgs[index + 1].StartsWith("--", StringComparison.Ordinal))
+                    {
+                        index++;
+                    }
+
+                    continue;
+                }
+            }
+
+            if (arguments.Length > 0)
+            {
+                arguments.Append(' ');
+            }
+
+            arguments.Append(QuoteArgument(arg));
+        }
+
+        if (arguments.Length > 0)
+        {
+            arguments.Append(' ');
+        }
+
+        arguments.Append($"--{LauncherIpcConstants.LauncherPidEnvVar}={Environment.ProcessId}");
+        arguments.Append($" --{LauncherIpcConstants.PackageRootEnvVar}={QuoteArgument(_deploymentLocator.GetAppRoot())}");
+        arguments.Append($" --{LauncherIpcConstants.VersionEnvVar}={versionInfo.Version}");
+        arguments.Append($" --{LauncherIpcConstants.CodenameEnvVar}={QuoteArgument(versionInfo.Codename)}");
+
+        return arguments.ToString();
+    }
+
+    private async Task<(ErrorWindowResult Result, string? CustomPath)> ShowHostNotFoundErrorAsync()
+    {
+        ErrorWindow? errorWindow = null;
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                errorWindow = new ErrorWindow();
+                errorWindow.SetErrorMessage("LanMountainDesktop host executable was not found.");
+                errorWindow.Show();
+                Logger.Warn("Host not found. Showing error window.");
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to show host-not-found error window.", ex);
+            }
+        });
+
+        if (errorWindow is null)
+        {
+            return (ErrorWindowResult.Exit, null);
+        }
+
+        ErrorWindowResult result;
+        string? customPath;
+        try
+        {
+            result = await errorWindow.WaitForChoiceAsync().ConfigureAwait(false);
+            customPath = errorWindow.GetCustomHostPath();
+            Logger.Info($"Host-not-found window result='{result}'; HasCustomPath={!string.IsNullOrWhiteSpace(customPath)}.");
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Failed while waiting for host-not-found window result.", ex);
+            result = ErrorWindowResult.Exit;
+            customPath = null;
+        }
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                if (errorWindow.IsVisible && errorWindow.IsLoaded)
+                {
+                    errorWindow.Close();
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to close host-not-found error window.", ex);
+            }
+        });
+
+        return (result, customPath);
+    }
+
+    private async Task<MigrationResult> ShowMigrationPromptAsync(LegacyVersionInfo legacyInfo)
+    {
+        MigrationPromptWindow? migrationWindow = null;
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                migrationWindow = new MigrationPromptWindow();
+                migrationWindow.SetLegacyInfo(legacyInfo);
+                migrationWindow.Show();
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to show migration prompt window.", ex);
+            }
+        });
+
+        if (migrationWindow is null)
+        {
+            return MigrationResult.Skipped;
+        }
+
+        MigrationResult result;
+        try
+        {
+            result = await migrationWindow.WaitForChoiceAsync().ConfigureAwait(false);
+        }
+        catch (Exception ex)
+        {
+            Logger.Error("Failed while waiting for migration prompt result.", ex);
+            result = MigrationResult.Skipped;
+        }
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                if (migrationWindow.IsVisible && migrationWindow.IsLoaded)
+                {
+                    migrationWindow.Close();
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("Failed to close migration prompt window.", ex);
+            }
+        });
+
+        return result;
+    }
+
+    private static string MapStartupStageToSplashStage(StartupStage stage) => stage switch
+    {
+        StartupStage.Initializing => "initializing",
+        StartupStage.LoadingSettings => "settings",
+        StartupStage.LoadingPlugins => "plugins",
+        StartupStage.InitializingUI => "ui",
+        StartupStage.ShellInitialized => "shell",
+        StartupStage.DesktopVisible => "ready",
+        StartupStage.ActivationRedirected => "activation",
+        StartupStage.ActivationFailed => "error",
+        StartupStage.Ready => "ready",
+        _ => "launch"
+    };
+
+    private static LauncherResult BuildResult(
+        bool success,
+        string stage,
+        string code,
+        string message,
+        Dictionary<string, string>? details = null,
+        string? errorMessage = null)
+    {
+        Logger.Info($"Launcher result prepared. Success={success}; Stage='{stage}'; Code='{code}'.");
+        return new LauncherResult
+        {
+            Success = success,
+            Stage = stage,
+            Code = code,
+            Message = message,
+            ErrorMessage = errorMessage,
+            Details = details ?? []
+        };
+    }
+
+    private static LauncherResult WithAdditionalDetails(LauncherResult result, Dictionary<string, string> details)
+    {
+        return new LauncherResult
+        {
+            Success = result.Success,
+            Stage = result.Stage,
+            Code = result.Code,
+            Message = result.Message,
+            CurrentVersion = result.CurrentVersion,
+            TargetVersion = result.TargetVersion,
+            RolledBackTo = result.RolledBackTo,
+            Details = MergeDetails(details, result.Details),
+            InstalledPackagePath = result.InstalledPackagePath,
+            ManifestId = result.ManifestId,
+            ManifestName = result.ManifestName,
+            ErrorMessage = result.ErrorMessage
+        };
+    }
+
+    private static Dictionary<string, string> BuildLauncherContextDetails(
+        CommandContext context,
+        OobeLaunchDecision oobeDecision,
+        string appRoot)
+    {
+        return new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["command"] = context.Command,
+            ["launchSource"] = context.LaunchSource,
+            ["isGuiMode"] = context.IsGuiCommand.ToString(),
+            ["isDebugMode"] = context.IsDebugMode.ToString(),
+            ["isElevated"] = oobeDecision.IsElevated.ToString(),
+            ["resolvedAppRoot"] = appRoot,
+            ["oobeStatePath"] = oobeDecision.StatePath,
+            ["oobeStateStatus"] = oobeDecision.Status.ToString(),
+            ["oobeDecision"] = oobeDecision.ShouldShowOobe ? "show" : "skip",
+            ["oobeSuppressionReason"] = oobeDecision.SuppressionReason,
+            ["oobeResultCode"] = oobeDecision.ResultCode,
+            ["userSid"] = oobeDecision.UserSid ?? string.Empty,
+            ["usedLegacyOobeMarker"] = oobeDecision.UsedLegacyMarker.ToString(),
+            ["migratedLegacyOobeMarker"] = oobeDecision.MigratedLegacyMarker.ToString(),
+            ["oobeStateError"] = oobeDecision.ErrorMessage
+        };
+    }
+
+    private static Dictionary<string, string> BuildResolutionDetails(
+        HostResolutionResult resolution,
+        HostStartAttempt? firstAttempt,
+        HostStartAttempt? secondAttempt,
+        string? failureStage)
+    {
+        var details = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+        {
+            ["resolvedAppRoot"] = resolution.AppRoot,
+            ["explicitAppRoot"] = resolution.ExplicitAppRoot ?? string.Empty,
+            ["resolvedHostPath"] = resolution.ResolvedHostPath ?? string.Empty,
+            ["resolutionSource"] = resolution.ResolutionSource ?? string.Empty,
+            ["devModeConfigIgnored"] = resolution.DevModeConfigIgnored.ToString(),
+            ["searchedPaths"] = string.Join(" | ", resolution.SearchedPaths),
+            ["failureStage"] = failureStage ?? string.Empty
+        };
+
+        if (firstAttempt is not null)
+        {
+            details["startMode"] = firstAttempt.StartMode.ToString();
+            details["processCreated"] = firstAttempt.ProcessCreated.ToString();
+            details["hostPid"] = firstAttempt.ProcessId?.ToString() ?? string.Empty;
+            details["firstAttemptFailureReason"] = firstAttempt.FailureReason ?? string.Empty;
+            details["firstAttemptExitCode"] = firstAttempt.ExitCode?.ToString() ?? string.Empty;
+        }
+
+        if (secondAttempt is not null)
+        {
+            details["fallbackStartMode"] = secondAttempt.StartMode.ToString();
+            details["fallbackProcessCreated"] = secondAttempt.ProcessCreated.ToString();
+            details["fallbackHostPid"] = secondAttempt.ProcessId?.ToString() ?? string.Empty;
+            details["fallbackFailureReason"] = secondAttempt.FailureReason ?? string.Empty;
+            details["fallbackExitCode"] = secondAttempt.ExitCode?.ToString() ?? string.Empty;
+        }
+
+        return details;
+    }
+
+    private static Dictionary<string, string> MergeDetails(
+        Dictionary<string, string> left,
+        Dictionary<string, string> right)
+    {
+        var merged = new Dictionary<string, string>(left, StringComparer.OrdinalIgnoreCase);
+        foreach (var pair in right)
+        {
+            merged[pair.Key] = pair.Value;
+        }
+
+        return merged;
+    }
+
+    private static string QuoteArgument(string value)
+    {
+        if (string.IsNullOrEmpty(value))
+        {
+            return "\"\"";
+        }
+
+        if (!value.Contains('"') && !value.Contains(' ') && !value.Contains('\t'))
+        {
+            return value;
+        }
+
+        var builder = new System.Text.StringBuilder();
+        builder.Append('"');
+        foreach (var ch in value)
+        {
+            if (ch == '"')
+            {
+                builder.Append("\\\"");
+            }
+            else
+            {
+                builder.Append(ch);
+            }
+        }
+
+        builder.Append('"');
+        return builder.ToString();
+    }
+
+    private static void EnsureExecutable(string path)
+    {
+        if (OperatingSystem.IsWindows())
+        {
+            return;
+        }
+
+        try
+        {
+            var mode = File.GetUnixFileMode(path);
+            mode |= UnixFileMode.UserExecute | UnixFileMode.GroupExecute | UnixFileMode.OtherExecute;
+            File.SetUnixFileMode(path, mode);
+        }
+        catch
+        {
+        }
+    }
+
+    private enum HostStartMode
+    {
+        ShellExecute,
+        Direct
+    }
+
+    private sealed record HostStartAttempt(
+        HostStartMode StartMode,
+        bool ProcessCreated,
+        Process? Process,
+        bool ExitedEarly,
+        int? ExitCode,
+        string? FailureReason)
+    {
+        public int? ProcessId => Process?.Id;
+
+        public static HostStartAttempt Started(HostStartMode startMode, Process process) =>
+            new(startMode, true, process, false, null, null);
+
+        public static HostStartAttempt EarlyExit(HostStartMode startMode, Process process, int exitCode) =>
+            new(startMode, true, process, true, exitCode, null);
+
+        public static HostStartAttempt StartFailed(HostStartMode startMode, string failureReason) =>
+            new(startMode, false, null, false, null, failureReason);
+    }
+
+    private sealed record HostLaunchOutcome(
+        LauncherResult Result,
+        Process? Process,
+        LauncherResult? ImmediateResult,
+        Dictionary<string, string> Details)
+    {
+        public static HostLaunchOutcome FromResult(LauncherResult result) =>
+            new(result, null, result.Success ? result : null, result.Details);
+
+        public static HostLaunchOutcome FromImmediateResult(LauncherResult result) =>
+            new(result, null, result, result.Details);
+
+        public static HostLaunchOutcome FromProcess(Process process, LauncherResult result, Dictionary<string, string> details) =>
+            new(result, process, null, details);
+    }
+}

LanMountainDesktop.Launcher/Services/LegacyVersionDetector.cs

@@ -0,0 +1,344 @@
+using System.Diagnostics;
+using Microsoft.Win32;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 老版本检测器 - 检测 0.8.x 及更早的单应用模式安装
+/// </summary>
+internal sealed class LegacyVersionDetector
+{
+    private const string LegacyAppName = "LanMountainDesktop";
+    private const string LegacyExeName = "LanMountainDesktop.exe";
+
+    /// <summary>
+    /// 检测是否存在老版本安装
+    /// </summary>
+    public static LegacyVersionInfo? DetectLegacyInstallation()
+    {
+        // 1. 检查注册表（安装版）
+        var registryInfo = DetectFromRegistry();
+        if (registryInfo != null)
+        {
+            return registryInfo;
+        }
+
+        // 2. 检查常见安装目录
+        var commonPaths = DetectFromCommonPaths();
+        if (commonPaths != null)
+        {
+            return commonPaths;
+        }
+
+        // 3. 检查便携版位置
+        var portableInfo = DetectPortableInstallation();
+        if (portableInfo != null)
+        {
+            return portableInfo;
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 从注册表检测安装信息
+    /// </summary>
+    private static LegacyVersionInfo? DetectFromRegistry()
+    {
+        try
+        {
+            // 检查 HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall
+            using var key = Registry.LocalMachine.OpenSubKey(
+                @$"Software\Microsoft\Windows\CurrentVersion\Uninstall\{LegacyAppName}");
+            
+            if (key != null)
+            {
+                var installLocation = key.GetValue("InstallLocation") as string;
+                var displayVersion = key.GetValue("DisplayVersion") as string;
+                var uninstallString = key.GetValue("UninstallString") as string;
+
+                if (!string.IsNullOrWhiteSpace(installLocation) && 
+                    File.Exists(Path.Combine(installLocation, LegacyExeName)))
+                {
+                    return new LegacyVersionInfo
+                    {
+                        Version = displayVersion ?? "0.8.x",
+                        InstallPath = installLocation,
+                        UninstallCommand = uninstallString,
+                        InstallType = LegacyInstallType.Registry
+                    };
+                }
+            }
+
+            // 检查 HKCU（用户级安装）
+            using var userKey = Registry.CurrentUser.OpenSubKey(
+                @$"Software\Microsoft\Windows\CurrentVersion\Uninstall\{LegacyAppName}");
+            
+            if (userKey != null)
+            {
+                var installLocation = userKey.GetValue("InstallLocation") as string;
+                var displayVersion = userKey.GetValue("DisplayVersion") as string;
+                var uninstallString = userKey.GetValue("UninstallString") as string;
+
+                if (!string.IsNullOrWhiteSpace(installLocation) && 
+                    File.Exists(Path.Combine(installLocation, LegacyExeName)))
+                {
+                    return new LegacyVersionInfo
+                    {
+                        Version = displayVersion ?? "0.8.x",
+                        InstallPath = installLocation,
+                        UninstallCommand = uninstallString,
+                        InstallType = LegacyInstallType.Registry
+                    };
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[LegacyVersionDetector] Registry detection failed: {ex.Message}");
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 从常见安装路径检测
+    /// </summary>
+    private static LegacyVersionInfo? DetectFromCommonPaths()
+    {
+        var commonPaths = new[]
+        {
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), LegacyAppName),
+        };
+
+        foreach (var path in commonPaths)
+        {
+            try
+            {
+                if (Directory.Exists(path))
+                {
+                    // 检查是否存在老版本的特征文件（没有 app-* 目录）
+                    var exePath = Path.Combine(path, LegacyExeName);
+                    var hasAppDirs = Directory.GetDirectories(path, "app-*").Length > 0;
+
+                    if (File.Exists(exePath) && !hasAppDirs)
+                    {
+                        // 尝试读取版本信息
+                        var version = TryGetFileVersion(exePath);
+                        
+                        return new LegacyVersionInfo
+                        {
+                            Version = version ?? "0.8.x",
+                            InstallPath = path,
+                            UninstallCommand = FindUninstaller(path),
+                            InstallType = LegacyInstallType.CommonPath
+                        };
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[LegacyVersionDetector] Path detection failed for {path}: {ex.Message}");
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 检测便携版安装
+    /// </summary>
+    private static LegacyVersionInfo? DetectPortableInstallation()
+    {
+        try
+        {
+            // 检查启动器所在目录的父目录（便携版常见布局）
+            var launcherDir = AppContext.BaseDirectory;
+            var parentDir = Path.GetFullPath(Path.Combine(launcherDir, ".."));
+
+            if (Directory.Exists(parentDir))
+            {
+                var exePath = Path.Combine(parentDir, LegacyExeName);
+                var hasAppDirs = Directory.GetDirectories(parentDir, "app-*").Length > 0;
+
+                // 如果存在 exe 且没有 app-* 目录，可能是老版本
+                if (File.Exists(exePath) && !hasAppDirs)
+                {
+                    var version = TryGetFileVersion(exePath);
+                    
+                    // 检查是否真的是老版本（通过文件版本或特定标记）
+                    if (IsLegacyVersion(version))
+                    {
+                        return new LegacyVersionInfo
+                        {
+                            Version = version ?? "0.8.x",
+                            InstallPath = parentDir,
+                            UninstallCommand = null, // 便携版没有卸载程序
+                            InstallType = LegacyInstallType.Portable
+                        };
+                    }
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[LegacyVersionDetector] Portable detection failed: {ex.Message}");
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 查找卸载程序
+    /// </summary>
+    private static string? FindUninstaller(string installPath)
+    {
+        try
+        {
+            // 常见的卸载程序命名
+            var uninstallerNames = new[] { "unins000.exe", "uninstall.exe", "Uninstall.exe" };
+            
+            foreach (var name in uninstallerNames)
+            {
+                var path = Path.Combine(installPath, name);
+                if (File.Exists(path))
+                {
+                    return path;
+                }
+            }
+        }
+        catch { }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 获取文件版本
+    /// </summary>
+    private static string? TryGetFileVersion(string filePath)
+    {
+        try
+        {
+            var versionInfo = FileVersionInfo.GetVersionInfo(filePath);
+            return versionInfo.FileVersion;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// 判断是否为老版本（版本号 < 1.0.0）
+    /// </summary>
+    private static bool IsLegacyVersion(string? version)
+    {
+        if (string.IsNullOrWhiteSpace(version))
+        {
+            return true; // 无法确定版本时，保守认为是老版本
+        }
+
+        if (Version.TryParse(version.Split(' ')[0], out var v))
+        {
+            return v.Major < 1;
+        }
+
+        return true;
+    }
+
+    /// <summary>
+    /// 打开卸载界面
+    /// </summary>
+    public static void OpenUninstallInterface(LegacyVersionInfo info)
+    {
+        try
+        {
+            if (!string.IsNullOrWhiteSpace(info.UninstallCommand))
+            {
+                // 有卸载命令，直接执行
+                var parts = info.UninstallCommand.Split(new[] { ' ' }, 2);
+                var fileName = parts[0].Trim('"');
+                var arguments = parts.Length > 1 ? parts[1] : "";
+                Logger.Info(
+                    $"Opening legacy uninstall interface with elevation reason 'legacy_uninstall'. " +
+                    $"InstallPath='{info.InstallPath}'; Version='{info.Version}'.");
+
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = fileName,
+                    Arguments = arguments,
+                    UseShellExecute = true,
+                    Verb = "runas" // 请求管理员权限
+                });
+            }
+            else
+            {
+                // 没有卸载命令，打开系统卸载面板
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "appwiz.cpl",
+                    UseShellExecute = true
+                });
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[LegacyVersionDetector] Failed to open uninstall: {ex.Message}");
+            
+            // 兜底：打开系统卸载面板
+            try
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "appwiz.cpl",
+                    UseShellExecute = true
+                });
+            }
+            catch { }
+        }
+    }
+
+    /// <summary>
+    /// 在资源管理器中显示老版本位置
+    /// </summary>
+    public static void ShowInExplorer(string path)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "explorer.exe",
+                Arguments = $"/select,\"{path}\"",
+                UseShellExecute = false
+            });
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[LegacyVersionDetector] Failed to show in explorer: {ex.Message}");
+        }
+    }
+}
+
+/// <summary>
+/// 老版本信息
+/// </summary>
+public class LegacyVersionInfo
+{
+    public string Version { get; set; } = "0.8.x";
+    public string InstallPath { get; set; } = "";
+    public string? UninstallCommand { get; set; }
+    public LegacyInstallType InstallType { get; set; }
+}
+
+/// <summary>
+/// 老版本安装类型
+/// </summary>
+public enum LegacyInstallType
+{
+    Registry,    // 注册表安装版
+    CommonPath,  // 常见路径安装
+    Portable     // 便携版
+}

LanMountainDesktop.Launcher/Services/Logger.cs

@@ -0,0 +1,138 @@
+using System.Text;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 简单的日志记录器 - 同时输出到控制台和文件
+/// </summary>
+internal static class Logger
+{
+    private static readonly object _lock = new();
+    private static string? _logFilePath;
+    private static bool _initialized;
+
+    /// <summary>
+    /// 初始化日志记录器
+    /// </summary>
+    public static void Initialize()
+    {
+        if (_initialized)
+        {
+            return;
+        }
+
+        try
+        {
+            var logDir = GetLogDirectory();
+            if (!string.IsNullOrEmpty(logDir))
+            {
+                Directory.CreateDirectory(logDir);
+                var timestamp = DateTime.Now.ToString("yyyyMMdd_HHmmss");
+                _logFilePath = Path.Combine(logDir, $"launcher_{timestamp}.log");
+                Console.WriteLine($"[Logger] Log file initialized: {_logFilePath}");
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[Logger] Failed to initialize log file: {ex.Message}");
+        }
+
+        _initialized = true;
+    }
+
+    /// <summary>
+    /// 获取日志文件路径
+    /// </summary>
+    public static string? GetLogFilePath()
+    {
+        return _logFilePath;
+    }
+
+    /// <summary>
+    /// 获取日志目录
+    /// </summary>
+    private static string? GetLogDirectory()
+    {
+        try
+        {
+            var appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+            if (!string.IsNullOrEmpty(appData))
+            {
+                return Path.Combine(appData, "LanMountainDesktop", ".launcher", "logs");
+            }
+        }
+        catch
+        {
+        }
+
+        try
+        {
+            var launcherDir = AppContext.BaseDirectory;
+            return Path.Combine(launcherDir, ".launcher", "logs");
+        }
+        catch
+        {
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 记录信息日志
+    /// </summary>
+    public static void Info(string message)
+    {
+        WriteLog("INFO", message);
+    }
+
+    /// <summary>
+    /// 记录警告日志
+    /// </summary>
+    public static void Warn(string message)
+    {
+        WriteLog("WARN", message);
+    }
+
+    /// <summary>
+    /// 记录错误日志
+    /// </summary>
+    public static void Error(string message)
+    {
+        WriteLog("ERROR", message);
+    }
+
+    /// <summary>
+    /// 记录错误日志（带异常）
+    /// </summary>
+    public static void Error(string message, Exception exception)
+    {
+        WriteLog("ERROR", $"{message}\n{exception}");
+    }
+
+    /// <summary>
+    /// 写入日志
+    /// </summary>
+    private static void WriteLog(string level, string message)
+    {
+        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var logLine = $"[{timestamp}] [{level}] {message}";
+
+        Console.WriteLine(logLine);
+
+        if (string.IsNullOrEmpty(_logFilePath))
+        {
+            return;
+        }
+
+        try
+        {
+            lock (_lock)
+            {
+                File.AppendAllText(_logFilePath, logLine + Environment.NewLine, Encoding.UTF8);
+            }
+        }
+        catch
+        {
+        }
+    }
+}

LanMountainDesktop.Launcher/Services/OobeStateService.cs

@@ -0,0 +1,221 @@
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class OobeStateService
+{
+    private const int CurrentSchemaVersion = 1;
+
+    private readonly string _stateDirectory;
+    private readonly string _statePath;
+    private readonly string _legacyMarkerPath;
+    private readonly LauncherExecutionSnapshot _executionSnapshot;
+
+    public OobeStateService(
+        string appRoot,
+        string? stateRootOverride = null,
+        LauncherExecutionSnapshot? executionSnapshot = null)
+    {
+        _ = Path.GetFullPath(appRoot);
+        _executionSnapshot = executionSnapshot ?? LauncherExecutionContext.Capture();
+
+        var stateRoot = string.IsNullOrWhiteSpace(stateRootOverride)
+            ? GetDefaultStateRoot()
+            : Path.GetFullPath(stateRootOverride);
+        _stateDirectory = Path.Combine(stateRoot, ".launcher", "state");
+        _statePath = Path.Combine(_stateDirectory, "oobe-state.json");
+        _legacyMarkerPath = Path.Combine(_stateDirectory, "first_run_completed");
+    }
+
+    public OobeLaunchDecision Evaluate(CommandContext context)
+    {
+        var decision = EvaluateCore(context);
+        Logger.Info(
+            $"OOBE decision evaluated. LaunchSource='{decision.LaunchSource}'; Status='{decision.Status}'; " +
+            $"ShouldShow={decision.ShouldShowOobe}; IsElevated={decision.IsElevated}; " +
+            $"StatePath='{decision.StatePath}'; SuppressionReason='{decision.SuppressionReason}'; " +
+            $"ResultCode='{decision.ResultCode}'; UserSid='{decision.UserSid ?? string.Empty}'.");
+        return decision;
+    }
+
+    public OobeCompletionResult MarkCompleted(CommandContext context)
+    {
+        try
+        {
+            Directory.CreateDirectory(_stateDirectory);
+            var payload = new OobeStateFile
+            {
+                SchemaVersion = CurrentSchemaVersion,
+                CompletedAtUtc = DateTimeOffset.UtcNow.ToString("O"),
+                UserName = _executionSnapshot.UserName,
+                UserSid = _executionSnapshot.UserSid,
+                LaunchSource = context.LaunchSource
+            };
+
+            var tempPath = Path.Combine(_stateDirectory, $"oobe-state.{Guid.NewGuid():N}.tmp");
+            var json = JsonSerializer.Serialize(payload, AppJsonContext.Default.OobeStateFile);
+            File.WriteAllText(tempPath, json);
+            File.Move(tempPath, _statePath, overwrite: true);
+            TryDeleteLegacyMarker();
+
+            Logger.Info(
+                $"OOBE completion persisted. LaunchSource='{context.LaunchSource}'; StatePath='{_statePath}'; " +
+                $"UserSid='{_executionSnapshot.UserSid ?? string.Empty}'.");
+
+            return new OobeCompletionResult
+            {
+                Success = true,
+                ResultCode = "ok"
+            };
+        }
+        catch (Exception ex)
+        {
+            Logger.Warn(
+                $"Failed to persist OOBE state. LaunchSource='{context.LaunchSource}'; StatePath='{_statePath}'; " +
+                $"Error='{ex.Message}'.");
+            return new OobeCompletionResult
+            {
+                Success = false,
+                ResultCode = "oobe_state_unavailable",
+                ErrorMessage = ex.Message
+            };
+        }
+    }
+
+    private OobeLaunchDecision EvaluateCore(CommandContext context)
+    {
+        if (string.Equals(context.LaunchSource, "debug-preview", StringComparison.OrdinalIgnoreCase))
+        {
+            return BuildSuppressedDecision(context, "debug_preview", "oobe_suppressed_debug_preview");
+        }
+
+        if (context.IsMaintenanceCommand)
+        {
+            return BuildSuppressedDecision(context, "maintenance", "oobe_suppressed_maintenance");
+        }
+
+        try
+        {
+            var migratedLegacyMarker = false;
+            if (File.Exists(_statePath))
+            {
+                using var stream = File.OpenRead(_statePath);
+                var state = JsonSerializer.Deserialize(stream, AppJsonContext.Default.OobeStateFile);
+                if (state is null || state.SchemaVersion <= 0 || string.IsNullOrWhiteSpace(state.CompletedAtUtc))
+                {
+                    return BuildUnavailableDecision(context, "OOBE state file is invalid.");
+                }
+
+                return BuildDecision(context, OobeStateStatus.Completed, shouldShowOobe: false, migratedLegacyMarker: false);
+            }
+
+            if (File.Exists(_legacyMarkerPath))
+            {
+                migratedLegacyMarker = TryMigrateLegacyMarker(context);
+                return BuildDecision(context, OobeStateStatus.Completed, shouldShowOobe: false, usedLegacyMarker: true, migratedLegacyMarker: migratedLegacyMarker);
+            }
+
+            if (_executionSnapshot.IsElevated)
+            {
+                return BuildSuppressedDecision(context, "elevated", "oobe_suppressed_elevated");
+            }
+
+            if (string.Equals(context.LaunchSource, "postinstall", StringComparison.OrdinalIgnoreCase))
+            {
+                return BuildDecision(context, OobeStateStatus.FirstRun, shouldShowOobe: true);
+            }
+
+            return BuildDecision(context, OobeStateStatus.FirstRun, shouldShowOobe: true);
+        }
+        catch (Exception ex)
+        {
+            return BuildUnavailableDecision(context, ex.Message);
+        }
+    }
+
+    private bool TryMigrateLegacyMarker(CommandContext context)
+    {
+        var result = MarkCompleted(context);
+        return result.Success;
+    }
+
+    private void TryDeleteLegacyMarker()
+    {
+        try
+        {
+            if (File.Exists(_legacyMarkerPath))
+            {
+                File.Delete(_legacyMarkerPath);
+            }
+        }
+        catch
+        {
+        }
+    }
+
+    private OobeLaunchDecision BuildDecision(
+        CommandContext context,
+        OobeStateStatus status,
+        bool shouldShowOobe,
+        bool usedLegacyMarker = false,
+        bool migratedLegacyMarker = false)
+    {
+        return new OobeLaunchDecision
+        {
+            Status = status,
+            ShouldShowOobe = shouldShowOobe,
+            StatePath = _statePath,
+            LaunchSource = context.LaunchSource,
+            IsElevated = _executionSnapshot.IsElevated,
+            UserName = _executionSnapshot.UserName,
+            UserSid = _executionSnapshot.UserSid,
+            UsedLegacyMarker = usedLegacyMarker,
+            MigratedLegacyMarker = migratedLegacyMarker,
+            ResultCode = "ok"
+        };
+    }
+
+    private OobeLaunchDecision BuildSuppressedDecision(CommandContext context, string reason, string resultCode)
+    {
+        return new OobeLaunchDecision
+        {
+            Status = OobeStateStatus.Suppressed,
+            ShouldShowOobe = false,
+            StatePath = _statePath,
+            LaunchSource = context.LaunchSource,
+            IsElevated = _executionSnapshot.IsElevated,
+            UserName = _executionSnapshot.UserName,
+            UserSid = _executionSnapshot.UserSid,
+            SuppressionReason = reason,
+            ResultCode = resultCode
+        };
+    }
+
+    private OobeLaunchDecision BuildUnavailableDecision(CommandContext context, string errorMessage)
+    {
+        return new OobeLaunchDecision
+        {
+            Status = OobeStateStatus.Unavailable,
+            ShouldShowOobe = false,
+            StatePath = _statePath,
+            LaunchSource = context.LaunchSource,
+            IsElevated = _executionSnapshot.IsElevated,
+            UserName = _executionSnapshot.UserName,
+            UserSid = _executionSnapshot.UserSid,
+            ResultCode = "oobe_state_unavailable",
+            ErrorMessage = errorMessage
+        };
+    }
+
+    private static string GetDefaultStateRoot()
+    {
+        var appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+        if (string.IsNullOrWhiteSpace(appData))
+        {
+            throw new InvalidOperationException("LocalApplicationData is unavailable.");
+        }
+
+        return Path.Combine(appData, "LanMountainDesktop");
+    }
+}

LanMountainDesktop.Launcher/Services/PluginInstallerService.cs

@@ -0,0 +1,271 @@
+using System.IO.Compression;
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 插件安装服务 - 简化版，不依赖 PluginSdk
+/// </summary>
+internal sealed class PluginInstallerService
+{
+    private const string ManifestFileName = "manifest.json";
+    private const string PackageFileExtension = ".lmdp";
+    private const string RuntimeDirectoryName = "runtime";
+    
+    private static readonly TimeSpan[] RetryDelays =
+    [
+        TimeSpan.FromMilliseconds(120),
+        TimeSpan.FromMilliseconds(250),
+        TimeSpan.FromMilliseconds(500)
+    ];
+
+    public LauncherResult InstallPackage(string sourcePath, string pluginsDirectory)
+    {
+        var fullSourcePath = Path.GetFullPath(sourcePath);
+        var fullPluginsDirectory = Path.GetFullPath(pluginsDirectory);
+
+        if (!File.Exists(fullSourcePath))
+        {
+            throw new FileNotFoundException($"Plugin package '{fullSourcePath}' was not found.", fullSourcePath);
+        }
+
+        if (TryBuildElevationRequiredResult(fullPluginsDirectory) is { } elevationRequiredResult)
+        {
+            return elevationRequiredResult;
+        }
+
+        var manifest = ReadManifestFromPackage(fullSourcePath);
+        Directory.CreateDirectory(fullPluginsDirectory);
+        var destinationPath = Path.Combine(fullPluginsDirectory, BuildInstalledPackageFileName(manifest.Id));
+        var stagingPath = destinationPath + ".incoming";
+        DeleteFileWithRetry(stagingPath);
+        CopyWithRetry(fullSourcePath, stagingPath, overwrite: true);
+        RemoveExistingPluginPackages(fullPluginsDirectory, manifest.Id, destinationPath, stagingPath);
+        MoveWithOverwriteRetry(stagingPath, destinationPath);
+
+        return new LauncherResult
+        {
+            Success = true,
+            Stage = "plugin.install",
+            Code = "ok",
+            Message = "Plugin installed.",
+            InstalledPackagePath = destinationPath,
+            ManifestId = manifest.Id,
+            ManifestName = manifest.Name
+        };
+    }
+
+    private static LauncherResult? TryBuildElevationRequiredResult(string pluginsDirectory)
+    {
+        if (!OperatingSystem.IsWindows())
+        {
+            return null;
+        }
+
+        var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+        if (string.IsNullOrWhiteSpace(localAppData))
+        {
+            return null;
+        }
+
+        var allowedRoot = EnsureTrailingSeparator(Path.Combine(Path.GetFullPath(localAppData), "LanMountainDesktop"));
+        var normalizedPluginsDirectory = EnsureTrailingSeparator(Path.GetFullPath(pluginsDirectory));
+        if (normalizedPluginsDirectory.StartsWith(allowedRoot, StringComparison.OrdinalIgnoreCase))
+        {
+            return null;
+        }
+
+        Logger.Warn(
+            $"Plugin installation requires explicit elevation. Reason='plugin_requires_elevation'; " +
+            $"PluginsDirectory='{pluginsDirectory}'; AllowedRoot='{allowedRoot}'.");
+
+        return new LauncherResult
+        {
+            Success = false,
+            Stage = "plugin.install",
+            Code = "plugin_elevation_required",
+            Message = "Plugin installation outside the current user's LanMountainDesktop data directory requires explicit elevation.",
+            ErrorMessage = "Plugin installation target is outside the current user's LanMountainDesktop data directory.",
+            Details = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+            {
+                ["pluginsDirectory"] = pluginsDirectory,
+                ["allowedRoot"] = allowedRoot,
+                ["elevationReason"] = "outside_user_scope"
+            }
+        };
+    }
+
+    public PluginManifest ReadManifestFromPackage(string packagePath)
+    {
+        using var archive = ZipFile.OpenRead(packagePath);
+        var entries = archive.Entries
+            .Where(entry => string.Equals(entry.Name, ManifestFileName, StringComparison.OrdinalIgnoreCase))
+            .ToArray();
+
+        if (entries.Length == 0)
+        {
+            throw new InvalidOperationException(
+                $"Plugin package '{packagePath}' does not contain '{ManifestFileName}'.");
+        }
+
+        if (entries.Length > 1)
+        {
+            throw new InvalidOperationException(
+                $"Plugin package '{packagePath}' contains multiple '{ManifestFileName}' files.");
+        }
+
+        using var stream = entries[0].Open();
+        using var reader = new StreamReader(stream);
+        var json = reader.ReadToEnd();
+        var manifest = JsonSerializer.Deserialize(json, AppJsonContext.Default.PluginManifest);
+        if (manifest == null)
+        {
+            throw new InvalidOperationException($"Failed to deserialize manifest from '{packagePath}'.");
+        }
+        return manifest;
+    }
+
+    private void RemoveExistingPluginPackages(string pluginsDirectory, string pluginId, string destinationPath, string stagingPath)
+    {
+        var runtimeRootDirectory = EnsureTrailingSeparator(Path.Combine(Path.GetFullPath(pluginsDirectory), RuntimeDirectoryName));
+        var pendingDeletionDir = Path.Combine(pluginsDirectory, ".pending-deletions");
+        Directory.CreateDirectory(pendingDeletionDir);
+
+        foreach (var existingPackagePath in Directory
+                     .EnumerateFiles(pluginsDirectory, "*" + PackageFileExtension, SearchOption.AllDirectories)
+                     .Select(Path.GetFullPath)
+                     .Where(path => !path.StartsWith(runtimeRootDirectory, StringComparison.OrdinalIgnoreCase)))
+        {
+            try
+            {
+                if (string.Equals(existingPackagePath, Path.GetFullPath(destinationPath), StringComparison.OrdinalIgnoreCase) ||
+                    string.Equals(existingPackagePath, Path.GetFullPath(stagingPath), StringComparison.OrdinalIgnoreCase))
+                {
+                    continue;
+                }
+
+                var existingManifest = ReadManifestFromPackage(existingPackagePath);
+                if (!string.Equals(existingManifest.Id, pluginId, StringComparison.OrdinalIgnoreCase))
+                {
+                    continue;
+                }
+
+                TryRemoveExistingPackage(existingPackagePath, pendingDeletionDir);
+            }
+            catch
+            {
+            }
+        }
+
+        CleanupPendingDeletions(pendingDeletionDir);
+    }
+
+    private void TryRemoveExistingPackage(string existingPackagePath, string pendingDeletionDir)
+    {
+        try
+        {
+            DeleteFileWithRetry(existingPackagePath);
+        }
+        catch (IOException)
+        {
+            var fileName = Path.GetFileName(existingPackagePath);
+            var pendingPath = Path.Combine(pendingDeletionDir, $"{fileName}.{Guid.NewGuid():N}.pending");
+            File.Move(existingPackagePath, pendingPath);
+        }
+    }
+
+    private static void CleanupPendingDeletions(string pendingDeletionDir)
+    {
+        if (!Directory.Exists(pendingDeletionDir))
+        {
+            return;
+        }
+
+        foreach (var pendingFile in Directory.EnumerateFiles(pendingDeletionDir, "*.pending"))
+        {
+            try
+            {
+                File.Delete(pendingFile);
+            }
+            catch
+            {
+            }
+        }
+    }
+
+    private static void CopyWithRetry(string sourcePath, string destinationPath, bool overwrite)
+    {
+        Retry(() => File.Copy(sourcePath, destinationPath, overwrite));
+    }
+
+    private static void MoveWithOverwriteRetry(string sourcePath, string destinationPath)
+    {
+        Retry(() => File.Move(sourcePath, destinationPath, overwrite: true));
+    }
+
+    private static void DeleteFileWithRetry(string filePath)
+    {
+        Retry(() =>
+        {
+            if (File.Exists(filePath))
+            {
+                File.Delete(filePath);
+            }
+        });
+    }
+
+    private static void Retry(Action action)
+    {
+        Exception? lastException = null;
+        for (var attempt = 0; attempt <= RetryDelays.Length; attempt++)
+        {
+            try
+            {
+                action();
+                return;
+            }
+            catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
+            {
+                lastException = ex;
+                if (attempt >= RetryDelays.Length)
+                {
+                    break;
+                }
+
+                Thread.Sleep(RetryDelays[attempt]);
+            }
+        }
+
+        if (lastException is not null)
+        {
+            throw lastException;
+        }
+    }
+
+    private static string BuildInstalledPackageFileName(string pluginId)
+    {
+        var invalidChars = Path.GetInvalidFileNameChars();
+        var fileName = new string(pluginId.Select(ch => invalidChars.Contains(ch) ? '_' : ch).ToArray());
+        return fileName + PackageFileExtension;
+    }
+
+    private static string EnsureTrailingSeparator(string path)
+    {
+        return path.EndsWith(Path.DirectorySeparatorChar.ToString(), StringComparison.Ordinal)
+            ? path
+            : path + Path.DirectorySeparatorChar;
+    }
+}
+
+/// <summary>
+/// 简化的插件清单模型
+/// </summary>
+public class PluginManifest
+{
+    public string Id { get; set; } = "";
+    public string Name { get; set; } = "";
+    public string Version { get; set; } = "";
+    public string? Description { get; set; }
+    public string? Author { get; set; }
+}

LanMountainDesktop.Launcher/Services/PluginUpgradeQueueService.cs

@@ -0,0 +1,94 @@
+using System.Text.Json;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class PluginUpgradeQueueService
+{
+    private const string PendingUpgradesFileName = ".pending-plugin-upgrades.json";
+
+    private readonly PluginInstallerService _installerService;
+
+    public PluginUpgradeQueueService(PluginInstallerService installerService)
+    {
+        _installerService = installerService;
+    }
+
+    public LauncherResult ApplyPendingUpgrades(string pluginsDirectory)
+    {
+        var pendingPath = Path.Combine(pluginsDirectory, PendingUpgradesFileName);
+        if (!File.Exists(pendingPath))
+        {
+            return new LauncherResult
+            {
+                Success = true,
+                Stage = "plugin.update",
+                Code = "noop",
+                Message = "No pending plugin upgrades."
+            };
+        }
+
+        var text = File.ReadAllText(pendingPath);
+        var pending = JsonSerializer.Deserialize(text, AppJsonContext.Default.ListPendingUpgrade) ?? [];
+        var failures = new List<string>();
+        var succeeded = new List<PendingUpgrade>();
+
+        foreach (var item in pending)
+        {
+            if (!item.IsValid())
+            {
+                failures.Add(item.PluginId);
+                continue;
+            }
+
+            try
+            {
+                _installerService.InstallPackage(item.SourcePackagePath, pluginsDirectory);
+                succeeded.Add(item);
+            }
+            catch
+            {
+                failures.Add(item.PluginId);
+            }
+        }
+
+        var remaining = pending
+            .Except(succeeded)
+            .Where(item => failures.Contains(item.PluginId, StringComparer.OrdinalIgnoreCase))
+            .ToList();
+
+        if (remaining.Count == 0)
+        {
+            File.Delete(pendingPath);
+        }
+        else
+        {
+            File.WriteAllText(pendingPath, JsonSerializer.Serialize(remaining, AppJsonContext.Default.ListPendingUpgrade));
+        }
+
+        return new LauncherResult
+        {
+            Success = failures.Count == 0,
+            Stage = "plugin.update",
+            Code = failures.Count == 0 ? "ok" : "partial_failed",
+            Message = failures.Count == 0
+                ? $"Applied {succeeded.Count} pending plugin upgrade(s)."
+                : $"Applied {succeeded.Count} upgrades, failed: {string.Join(", ", failures)}."
+        };
+    }
+}
+
+internal sealed record PendingUpgrade(
+    string PluginId,
+    string SourcePackagePath,
+    string TargetVersion,
+    DateTimeOffset CreatedAt)
+{
+    public bool IsValid()
+    {
+        return !string.IsNullOrWhiteSpace(PluginId) &&
+               !string.IsNullOrWhiteSpace(SourcePackagePath) &&
+               !string.IsNullOrWhiteSpace(TargetVersion) &&
+               File.Exists(SourcePackagePath);
+    }
+}

LanMountainDesktop.Launcher/Services/UpdateCheckService.cs

@@ -0,0 +1,161 @@
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using LanMountainDesktop.Launcher.Models;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 更新检查服务 - 基于 GitHub Release API
+/// </summary>
+internal sealed class UpdateCheckService
+{
+    private const string GitHubApiBase = "https://api.github.com";
+    private readonly string _repoOwner;
+    private readonly string _repoName;
+    private readonly HttpClient _httpClient;
+
+    public UpdateCheckService(string repoOwner, string repoName)
+    {
+        _repoOwner = repoOwner;
+        _repoName = repoName;
+        _httpClient = new HttpClient();
+        _httpClient.DefaultRequestHeaders.Add("User-Agent", "LanMountainDesktop-Launcher");
+        _httpClient.DefaultRequestHeaders.Add("Accept", "application/vnd.github+json");
+    }
+
+    /// <summary>
+    /// 检查更新
+    /// </summary>
+    public async Task<UpdateCheckResult> CheckForUpdateAsync(
+        string currentVersion,
+        UpdateChannel channel,
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            var releases = await FetchReleasesAsync(cancellationToken);
+            
+            // 根据频道过滤版本
+            var filteredReleases = channel == UpdateChannel.Stable
+                ? releases.Where(r => !r.Prerelease).ToList()
+                : releases;
+
+            // 找到最新版本
+            var latestRelease = filteredReleases
+                .OrderByDescending(r => ParseVersion(r.TagName))
+                .FirstOrDefault();
+
+            if (latestRelease == null)
+            {
+                return new UpdateCheckResult
+                {
+                    HasUpdate = false,
+                    CurrentVersion = currentVersion,
+                    ErrorMessage = "No releases found"
+                };
+            }
+
+            var latestVersion = ParseVersionString(latestRelease.TagName);
+            var current = ParseVersion(currentVersion);
+            var latest = ParseVersion(latestVersion);
+
+            return new UpdateCheckResult
+            {
+                HasUpdate = latest > current,
+                LatestVersion = latestVersion,
+                CurrentVersion = currentVersion,
+                Release = latestRelease
+            };
+        }
+        catch (Exception ex)
+        {
+            return new UpdateCheckResult
+            {
+                HasUpdate = false,
+                CurrentVersion = currentVersion,
+                ErrorMessage = ex.Message
+            };
+        }
+    }
+
+    /// <summary>
+    /// 获取所有 Release
+    /// </summary>
+    private async Task<List<ReleaseInfo>> FetchReleasesAsync(CancellationToken cancellationToken)
+    {
+        var url = $"{GitHubApiBase}/repos/{_repoOwner}/{_repoName}/releases";
+        var response = await _httpClient.GetAsync(url, cancellationToken);
+        response.EnsureSuccessStatusCode();
+
+        var json = await response.Content.ReadAsStringAsync(cancellationToken);
+        var releases = JsonSerializer.Deserialize(json, AppJsonContext.Default.ListGitHubRelease);
+
+        return releases?.Select(r => new ReleaseInfo
+        {
+            TagName = r.TagName ?? "",
+            Name = r.Name ?? "",
+            Prerelease = r.Prerelease,
+            PublishedAt = r.PublishedAt,
+            Body = r.Body,
+            Assets = r.Assets?.Select(a => new ReleaseAsset
+            {
+                Name = a.Name ?? "",
+                BrowserDownloadUrl = a.BrowserDownloadUrl ?? "",
+                Size = a.Size
+            }).ToList() ?? []
+        }).ToList() ?? [];
+    }
+
+    /// <summary>
+    /// 从 tag 解析版本号 (例如: v1.0.0 -> 1.0.0)
+    /// </summary>
+    private static string ParseVersionString(string tag)
+    {
+        return tag.TrimStart('v', 'V');
+    }
+
+    /// <summary>
+    /// 解析版本号
+    /// </summary>
+    private static Version ParseVersion(string versionString)
+    {
+        var cleaned = ParseVersionString(versionString);
+        return Version.TryParse(cleaned, out var version) ? version : new Version(0, 0, 0);
+    }
+}
+
+// GitHub API 响应模型
+internal sealed class GitHubRelease
+{
+    [JsonPropertyName("tag_name")]
+    public string? TagName { get; set; }
+
+    [JsonPropertyName("name")]
+    public string? Name { get; set; }
+
+    [JsonPropertyName("prerelease")]
+    public bool Prerelease { get; set; }
+
+    [JsonPropertyName("published_at")]
+    public DateTime PublishedAt { get; set; }
+
+    [JsonPropertyName("body")]
+    public string? Body { get; set; }
+
+    [JsonPropertyName("assets")]
+    public List<GitHubAsset>? Assets { get; set; }
+}
+
+internal sealed class GitHubAsset
+{
+    [JsonPropertyName("name")]
+    public string? Name { get; set; }
+
+    [JsonPropertyName("browser_download_url")]
+    public string? BrowserDownloadUrl { get; set; }
+
+    [JsonPropertyName("size")]
+    public long Size { get; set; }
+}

LanMountainDesktop.Launcher/Services/WelcomeOobeStep.cs

@@ -0,0 +1,50 @@
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Views;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class WelcomeOobeStep : IOobeStep
+{
+    private readonly CommandContext _context;
+    private readonly OobeStateService _oobeStateService;
+
+    public WelcomeOobeStep(OobeStateService oobeStateService, CommandContext context)
+    {
+        _oobeStateService = oobeStateService;
+        _context = context;
+    }
+
+    public async Task RunAsync(CancellationToken cancellationToken)
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+
+        OobeWindow? window = null;
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            window = new OobeWindow();
+            window.Show();
+        });
+
+        if (window is null)
+        {
+            return;
+        }
+
+        await window.WaitForEnterAsync().ConfigureAwait(false);
+        var completion = _oobeStateService.MarkCompleted(_context);
+        if (!completion.Success)
+        {
+            Logger.Warn(
+                $"OOBE completion state was not persisted. ResultCode='{completion.ResultCode}'; " +
+                $"Error='{completion.ErrorMessage}'.");
+        }
+
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            if (window.IsVisible)
+            {
+                window.Close();
+            }
+        });
+    }
+}

LanMountainDesktop.Launcher/ViewModels/DevDebugWindowViewModel.cs

@@ -0,0 +1,263 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Windows.Input;
+
+namespace LanMountainDesktop.Launcher.ViewModels;
+
+/// <summary>
+/// 开发调试窗口 ViewModel
+/// </summary>
+public sealed class DevDebugWindowViewModel : INotifyPropertyChanged
+{
+    private bool _isSplashEnabled = true;
+    private bool _isErrorEnabled = true;
+    private bool _isUpdateEnabled = true;
+    private bool _isOobeEnabled = true;
+    private string _statusMessage = "就绪";
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    #region 页面开关
+
+    /// <summary>
+    /// 启动画面是否启用实际功能
+    /// </summary>
+    public bool IsSplashEnabled
+    {
+        get => _isSplashEnabled;
+        set
+        {
+            if (_isSplashEnabled != value)
+            {
+                _isSplashEnabled = value;
+                OnPropertyChanged();
+                UpdateStatus($"启动画面: {(value ? "功能模式" : "仅查看")}");
+            }
+        }
+    }
+
+    /// <summary>
+    /// 错误页面是否启用实际功能
+    /// </summary>
+    public bool IsErrorEnabled
+    {
+        get => _isErrorEnabled;
+        set
+        {
+            if (_isErrorEnabled != value)
+            {
+                _isErrorEnabled = value;
+                OnPropertyChanged();
+                UpdateStatus($"错误页面: {(value ? "功能模式" : "仅查看")}");
+            }
+        }
+    }
+
+    /// <summary>
+    /// 更新页面是否启用实际功能
+    /// </summary>
+    public bool IsUpdateEnabled
+    {
+        get => _isUpdateEnabled;
+        set
+        {
+            if (_isUpdateEnabled != value)
+            {
+                _isUpdateEnabled = value;
+                OnPropertyChanged();
+                UpdateStatus($"更新页面: {(value ? "功能模式" : "仅查看")}");
+            }
+        }
+    }
+
+    /// <summary>
+    /// OOBE页面是否启用实际功能
+    /// </summary>
+    public bool IsOobeEnabled
+    {
+        get => _isOobeEnabled;
+        set
+        {
+            if (_isOobeEnabled != value)
+            {
+                _isOobeEnabled = value;
+                OnPropertyChanged();
+                UpdateStatus($"OOBE页面: {(value ? "功能模式" : "仅查看")}");
+            }
+        }
+    }
+
+    #endregion
+
+    #region 状态信息
+
+    /// <summary>
+    /// 状态消息
+    /// </summary>
+    public string StatusMessage
+    {
+        get => _statusMessage;
+        private set
+        {
+            if (_statusMessage != value)
+            {
+                _statusMessage = value;
+                OnPropertyChanged();
+            }
+        }
+    }
+
+    #endregion
+
+    #region 命令
+
+    /// <summary>
+    /// 打开启动画面命令
+    /// </summary>
+    public ICommand OpenSplashCommand { get; }
+
+    /// <summary>
+    /// 打开错误页面命令
+    /// </summary>
+    public ICommand OpenErrorCommand { get; }
+
+    /// <summary>
+    /// 打开更新页面命令
+    /// </summary>
+    public ICommand OpenUpdateCommand { get; }
+
+    /// <summary>
+    /// 打开OOBE页面命令
+    /// </summary>
+    public ICommand OpenOobeCommand { get; }
+
+    /// <summary>
+    /// 全部切换到查看模式命令
+    /// </summary>
+    public ICommand SetAllViewOnlyCommand { get; }
+
+    /// <summary>
+    /// 全部切换到功能模式命令
+    /// </summary>
+    public ICommand SetAllFunctionalCommand { get; }
+
+    /// <summary>
+    /// 关闭窗口命令
+    /// </summary>
+    public ICommand CloseCommand { get; }
+
+    #endregion
+
+    #region 事件
+
+    /// <summary>
+    /// 请求打开启动画面
+    /// </summary>
+    public event EventHandler<SplashOpenEventArgs>? OpenSplashRequested;
+
+    /// <summary>
+    /// 请求打开错误页面
+    /// </summary>
+    public event EventHandler<ErrorOpenEventArgs>? OpenErrorRequested;
+
+    /// <summary>
+    /// 请求打开更新页面
+    /// </summary>
+    public event EventHandler<UpdateOpenEventArgs>? OpenUpdateRequested;
+
+    /// <summary>
+    /// 请求打开OOBE页面
+    /// </summary>
+    public event EventHandler<OobeOpenEventArgs>? OpenOobeRequested;
+
+    /// <summary>
+    /// 请求关闭窗口
+    /// </summary>
+    public event EventHandler? CloseRequested;
+
+    #endregion
+
+    public DevDebugWindowViewModel()
+    {
+        OpenSplashCommand = new RelayCommand(() =>
+        {
+            OpenSplashRequested?.Invoke(this, new SplashOpenEventArgs(IsSplashEnabled));
+        });
+
+        OpenErrorCommand = new RelayCommand(() =>
+        {
+            OpenErrorRequested?.Invoke(this, new ErrorOpenEventArgs(IsErrorEnabled));
+        });
+
+        OpenUpdateCommand = new RelayCommand(() =>
+        {
+            OpenUpdateRequested?.Invoke(this, new UpdateOpenEventArgs(IsUpdateEnabled));
+        });
+
+        OpenOobeCommand = new RelayCommand(() =>
+        {
+            OpenOobeRequested?.Invoke(this, new OobeOpenEventArgs(IsOobeEnabled));
+        });
+
+        SetAllViewOnlyCommand = new RelayCommand(() =>
+        {
+            IsSplashEnabled = false;
+            IsErrorEnabled = false;
+            IsUpdateEnabled = false;
+            IsOobeEnabled = false;
+            UpdateStatus("全部页面已切换到查看模式");
+        });
+
+        SetAllFunctionalCommand = new RelayCommand(() =>
+        {
+            IsSplashEnabled = true;
+            IsErrorEnabled = true;
+            IsUpdateEnabled = true;
+            IsOobeEnabled = true;
+            UpdateStatus("全部页面已切换到功能模式");
+        });
+
+        CloseCommand = new RelayCommand(() =>
+        {
+            CloseRequested?.Invoke(this, EventArgs.Empty);
+        });
+    }
+
+    private void UpdateStatus(string message)
+    {
+        StatusMessage = $"[{DateTime.Now:HH:mm:ss}] {message}";
+    }
+
+    private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+}
+
+#region 事件参数
+
+public class SplashOpenEventArgs : EventArgs
+{
+    public bool IsFunctional { get; }
+    public SplashOpenEventArgs(bool isFunctional) => IsFunctional = isFunctional;
+}
+
+public class ErrorOpenEventArgs : EventArgs
+{
+    public bool IsFunctional { get; }
+    public ErrorOpenEventArgs(bool isFunctional) => IsFunctional = isFunctional;
+}
+
+public class UpdateOpenEventArgs : EventArgs
+{
+    public bool IsFunctional { get; }
+    public UpdateOpenEventArgs(bool isFunctional) => IsFunctional = isFunctional;
+}
+
+public class OobeOpenEventArgs : EventArgs
+{
+    public bool IsFunctional { get; }
+    public OobeOpenEventArgs(bool isFunctional) => IsFunctional = isFunctional;
+}
+
+#endregion

LanMountainDesktop.Launcher/ViewModels/RelayCommand.cs

@@ -0,0 +1,67 @@
+using System.Windows.Input;
+
+namespace LanMountainDesktop.Launcher.ViewModels;
+
+/// <summary>
+/// 简单的命令实现
+/// </summary>
+public class RelayCommand : ICommand
+{
+    private readonly Action _execute;
+    private readonly Func<bool>? _canExecute;
+
+    public RelayCommand(Action execute, Func<bool>? canExecute = null)
+    {
+        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+        _canExecute = canExecute;
+    }
+
+    public bool CanExecute(object? parameter)
+    {
+        return _canExecute?.Invoke() ?? true;
+    }
+
+    public void Execute(object? parameter)
+    {
+        _execute();
+    }
+
+    public event EventHandler? CanExecuteChanged;
+
+    public void RaiseCanExecuteChanged()
+    {
+        CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+}
+
+/// <summary>
+/// 带参数的 RelayCommand
+/// </summary>
+public class RelayCommand<T> : ICommand
+{
+    private readonly Action<T> _execute;
+    private readonly Predicate<T>? _canExecute;
+
+    public RelayCommand(Action<T> execute, Predicate<T>? canExecute = null)
+    {
+        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+        _canExecute = canExecute;
+    }
+
+    public bool CanExecute(object? parameter)
+    {
+        return _canExecute?.Invoke((T)parameter!) ?? true;
+    }
+
+    public void Execute(object? parameter)
+    {
+        _execute((T)parameter!);
+    }
+
+    public event EventHandler? CanExecuteChanged;
+
+    public void RaiseCanExecuteChanged()
+    {
+        CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+}

LanMountainDesktop.Launcher/Views/DevDebugWindow.axaml

@@ -0,0 +1,182 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:vm="clr-namespace:LanMountainDesktop.Launcher.ViewModels"
+        mc:Ignorable="d" d:DesignWidth="500" d:DesignHeight="600"
+        x:Class="LanMountainDesktop.Launcher.Views.DevDebugWindow"
+        x:DataType="vm:DevDebugWindowViewModel"
+        Title="开发调试窗口 - Launcher"
+        Width="500"
+        Height="600"
+        WindowStartupLocation="CenterScreen"
+        Icon="/Assets/logo.ico">
+
+  <Design.DataContext>
+    <vm:DevDebugWindowViewModel />
+  </Design.DataContext>
+
+  <Border Padding="20"
+          Background="{DynamicResource SystemControlBackgroundAltHighBrush}">
+    <Grid RowDefinitions="Auto,*,Auto,Auto">
+      
+      <!-- 标题 -->
+      <StackPanel Grid.Row="0" Margin="0,0,0,20">
+        <TextBlock Text="🛠️ 开发调试窗口"
+                   FontSize="24"
+                   FontWeight="Bold"
+                   Foreground="{DynamicResource SystemControlForegroundBaseHighBrush}" />
+        <TextBlock Text="用于开发和调试 Launcher 的各个页面"
+                   FontSize="12"
+                   Opacity="0.7"
+                   Margin="0,5,0,0"
+                   Foreground="{DynamicResource SystemControlForegroundBaseMediumBrush}" />
+      </StackPanel>
+
+      <!-- 页面列表 -->
+      <ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto">
+        <StackPanel Spacing="15">
+          
+          <!-- 启动画面 -->
+          <Border Background="{DynamicResource SystemControlBackgroundAltMediumBrush}"
+                  CornerRadius="8"
+                  Padding="15">
+            <Grid ColumnDefinitions="*,Auto">
+              <StackPanel Grid.Column="0">
+                <TextBlock Text="🚀 启动画面 (SplashWindow)"
+                           FontWeight="SemiBold"
+                           FontSize="14" />
+                <TextBlock Text="显示启动进度和状态"
+                           FontSize="11"
+                           Opacity="0.6"
+                           Margin="0,3,0,0" />
+              </StackPanel>
+              <StackPanel Grid.Column="1" Spacing="8">
+                <ToggleSwitch Content="启用功能"
+                              IsChecked="{Binding IsSplashEnabled}"
+                              OnContent="功能"
+                              OffContent="查看" />
+                <Button Content="打开"
+                        Command="{Binding OpenSplashCommand}"
+                        HorizontalAlignment="Right" />
+              </StackPanel>
+            </Grid>
+          </Border>
+
+          <!-- 错误页面 -->
+          <Border Background="{DynamicResource SystemControlBackgroundAltMediumBrush}"
+                  CornerRadius="8"
+                  Padding="15">
+            <Grid ColumnDefinitions="*,Auto">
+              <StackPanel Grid.Column="0">
+                <TextBlock Text="❌ 错误页面 (ErrorWindow)"
+                           FontWeight="SemiBold"
+                           FontSize="14" />
+                <TextBlock Text="显示错误信息和重试选项"
+                           FontSize="11"
+                           Opacity="0.6"
+                           Margin="0,3,0,0" />
+              </StackPanel>
+              <StackPanel Grid.Column="1" Spacing="8">
+                <ToggleSwitch Content="启用功能"
+                              IsChecked="{Binding IsErrorEnabled}"
+                              OnContent="功能"
+                              OffContent="查看" />
+                <Button Content="打开"
+                        Command="{Binding OpenErrorCommand}"
+                        HorizontalAlignment="Right" />
+              </StackPanel>
+            </Grid>
+          </Border>
+
+          <!-- 更新页面 -->
+          <Border Background="{DynamicResource SystemControlBackgroundAltMediumBrush}"
+                  CornerRadius="8"
+                  Padding="15">
+            <Grid ColumnDefinitions="*,Auto">
+              <StackPanel Grid.Column="0">
+                <TextBlock Text="⬆️ 更新页面 (UpdateWindow)"
+                           FontWeight="SemiBold"
+                           FontSize="14" />
+                <TextBlock Text="显示更新进度和状态"
+                           FontSize="11"
+                           Opacity="0.6"
+                           Margin="0,3,0,0" />
+              </StackPanel>
+              <StackPanel Grid.Column="1" Spacing="8">
+                <ToggleSwitch Content="启用功能"
+                              IsChecked="{Binding IsUpdateEnabled}"
+                              OnContent="功能"
+                              OffContent="查看" />
+                <Button Content="打开"
+                        Command="{Binding OpenUpdateCommand}"
+                        HorizontalAlignment="Right" />
+              </StackPanel>
+            </Grid>
+          </Border>
+
+          <!-- OOBE页面 -->
+          <Border Background="{DynamicResource SystemControlBackgroundAltMediumBrush}"
+                  CornerRadius="8"
+                  Padding="15">
+            <Grid ColumnDefinitions="*,Auto">
+              <StackPanel Grid.Column="0">
+                <TextBlock Text="👋 OOBE页面 (OobeWindow)"
+                           FontWeight="SemiBold"
+                           FontSize="14" />
+                <TextBlock Text="首次运行引导页面"
+                           FontSize="11"
+                           Opacity="0.6"
+                           Margin="0,3,0,0" />
+              </StackPanel>
+              <StackPanel Grid.Column="1" Spacing="8">
+                <ToggleSwitch Content="启用功能"
+                              IsChecked="{Binding IsOobeEnabled}"
+                              OnContent="功能"
+                              OffContent="查看" />
+                <Button Content="打开"
+                        Command="{Binding OpenOobeCommand}"
+                        HorizontalAlignment="Right" />
+              </StackPanel>
+            </Grid>
+          </Border>
+
+        </StackPanel>
+      </ScrollViewer>
+
+      <!-- 批量操作 -->
+      <StackPanel Grid.Row="2" 
+                  Orientation="Horizontal"
+                  HorizontalAlignment="Center"
+                  Spacing="10"
+                  Margin="0,15">
+        <Button Content="全部设为查看模式"
+                Command="{Binding SetAllViewOnlyCommand}"
+                Background="{DynamicResource SystemControlBackgroundAltMediumBrush}" />
+        <Button Content="全部设为功能模式"
+                Command="{Binding SetAllFunctionalCommand}"
+                Background="{DynamicResource SystemControlHighlightAccentBrush}"
+                Foreground="White" />
+      </StackPanel>
+
+      <!-- 底部状态栏 -->
+      <Border Grid.Row="3"
+              Background="{DynamicResource SystemControlBackgroundAltMediumBrush}"
+              CornerRadius="4"
+              Padding="10">
+        <Grid ColumnDefinitions="*,Auto">
+          <TextBlock Grid.Column="0"
+                     Text="{Binding StatusMessage}"
+                     FontSize="11"
+                     Opacity="0.8"
+                     TextTrimming="CharacterEllipsis" />
+          <Button Grid.Column="1"
+                  Content="关闭"
+                  Command="{Binding CloseCommand}"
+                  Padding="15,5" />
+        </Grid>
+      </Border>
+
+    </Grid>
+  </Border>
+</Window>

LanMountainDesktop.Launcher/Views/DevDebugWindow.axaml.cs

@@ -0,0 +1,196 @@
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Launcher.ViewModels;
+using LanMountainDesktop.Launcher.Views;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 开发调试窗口
+/// </summary>
+public partial class DevDebugWindow : Window
+{
+    private readonly DevDebugWindowViewModel _viewModel;
+
+    public DevDebugWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+
+        _viewModel = new DevDebugWindowViewModel();
+        DataContext = _viewModel;
+
+        // 订阅事件
+        _viewModel.OpenSplashRequested += OnOpenSplashRequested;
+        _viewModel.OpenErrorRequested += OnOpenErrorRequested;
+        _viewModel.OpenUpdateRequested += OnOpenUpdateRequested;
+        _viewModel.OpenOobeRequested += OnOpenOobeRequested;
+        _viewModel.CloseRequested += OnCloseRequested;
+    }
+
+    /// <summary>
+    /// 打开启动画面
+    /// </summary>
+    private void OnOpenSplashRequested(object? sender, SplashOpenEventArgs e)
+    {
+        var splashWindow = new SplashWindow();
+        
+        if (!e.IsFunctional)
+        {
+            // 查看模式：显示模拟内容
+            splashWindow.SetDebugMode(true);
+        }
+        
+        splashWindow.Show();
+        
+        if (e.IsFunctional)
+        {
+            // 功能模式：模拟正常启动流程
+            _ = SimulateSplashProgress(splashWindow);
+        }
+    }
+
+    /// <summary>
+    /// 打开错误页面
+    /// </summary>
+    private void OnOpenErrorRequested(object? sender, ErrorOpenEventArgs e)
+    {
+        var errorWindow = new ErrorWindow();
+        
+        if (!e.IsFunctional)
+        {
+            // 查看模式：显示模拟错误
+            errorWindow.SetDebugMode(true);
+            errorWindow.SetErrorMessage("[调试模式] 这是一个模拟的错误消息，用于查看错误页面的样式和布局。");
+        }
+        else
+        {
+            // 功能模式：显示真实错误
+            errorWindow.SetErrorMessage("找不到阑山桌面应用程序。\n\n请检查应用安装是否完整。");
+        }
+        
+        errorWindow.Show();
+    }
+
+    /// <summary>
+    /// 打开更新页面
+    /// </summary>
+    private void OnOpenUpdateRequested(object? sender, UpdateOpenEventArgs e)
+    {
+        var updateWindow = new UpdateWindow();
+        
+        if (!e.IsFunctional)
+        {
+            // 查看模式：显示模拟更新
+            updateWindow.SetDebugMode(true);
+        }
+        
+        updateWindow.Show();
+        
+        if (e.IsFunctional)
+        {
+            // 功能模式：模拟更新进度
+            _ = SimulateUpdateProgress(updateWindow);
+        }
+    }
+
+    /// <summary>
+    /// 打开OOBE页面
+    /// </summary>
+    private void OnOpenOobeRequested(object? sender, OobeOpenEventArgs e)
+    {
+        var oobeWindow = new OobeWindow();
+        
+        if (!e.IsFunctional)
+        {
+            // 查看模式：显示调试标记（通过标题）
+            oobeWindow.Title = "[调试模式] 欢迎使用阑山桌面";
+        }
+        
+        oobeWindow.Show();
+        
+        if (e.IsFunctional)
+        {
+            // 功能模式：等待用户点击后自动关闭
+            _ = SimulateOobeProgress(oobeWindow);
+        }
+    }
+
+    /// <summary>
+    /// 模拟OOBE流程
+    /// </summary>
+    private async Task SimulateOobeProgress(OobeWindow oobeWindow)
+    {
+        try
+        {
+            // 等待用户点击开始按钮
+            await oobeWindow.WaitForEnterAsync();
+            
+            // 用户点击后，窗口会自动关闭（通过OobeWindow内部的动画和关闭逻辑）
+            Console.WriteLine("[DevDebugWindow] OOBE completed by user");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[DevDebugWindow] Error during OOBE simulation: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 关闭窗口
+    /// </summary>
+    private void OnCloseRequested(object? sender, EventArgs e)
+    {
+        Close();
+    }
+
+    /// <summary>
+    /// 模拟启动画面进度
+    /// </summary>
+    private async Task SimulateSplashProgress(SplashWindow splashWindow)
+    {
+        var stages = new[] { "初始化", "检查更新", "加载组件", "启动应用" };
+        var reporter = (ISplashStageReporter)splashWindow;
+        
+        for (int i = 0; i < stages.Length; i++)
+        {
+            reporter.ReportStage(stages[i], (i + 1) * 25);
+            await Task.Delay(500);
+        }
+        
+        // 3秒后关闭
+        await Task.Delay(3000);
+        splashWindow.Close();
+    }
+
+    /// <summary>
+    /// 模拟更新进度
+    /// </summary>
+    private async Task SimulateUpdateProgress(UpdateWindow updateWindow)
+    {
+        var stages = new[] { "下载", "验证", "安装", "清理" };
+        
+        foreach (var stage in stages)
+        {
+            updateWindow.Report(stage, $"正在{stage}...", Array.IndexOf(stages, stage) * 25 + 10);
+            await Task.Delay(800);
+        }
+        
+        updateWindow.ReportComplete(true, null);
+        
+        // 2秒后关闭
+        await Task.Delay(2000);
+        updateWindow.Close();
+    }
+
+    protected override void OnClosed(EventArgs e)
+    {
+        // 取消订阅事件
+        _viewModel.OpenSplashRequested -= OnOpenSplashRequested;
+        _viewModel.OpenErrorRequested -= OnOpenErrorRequested;
+        _viewModel.OpenUpdateRequested -= OnOpenUpdateRequested;
+        _viewModel.OpenOobeRequested -= OnOpenOobeRequested;
+        _viewModel.CloseRequested -= OnCloseRequested;
+        
+        base.OnClosed(e);
+    }
+}

LanMountainDesktop.Launcher/Views/ErrorDebugWindow.axaml

@@ -0,0 +1,107 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        mc:Ignorable="d"
+        d:DesignWidth="420"
+        d:DesignHeight="320"
+        x:Class="LanMountainDesktop.Launcher.Views.ErrorDebugWindow"
+        x:DataType="views:ErrorDebugWindow"
+        Title="调试模式"
+        Width="420"
+        Height="320"
+        CanResize="False"
+        WindowStartupLocation="CenterOwner"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:ErrorDebugWindow />
+  </Design.DataContext>
+
+  <Grid Margin="24" RowDefinitions="Auto,*,Auto">
+    <!-- 标题 -->
+    <TextBlock Grid.Row="0"
+               Text="调试设置"
+               FontSize="20"
+               FontWeight="SemiBold"
+               Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+               Margin="0,0,0,16" />
+
+    <!-- 设置内容 -->
+    <StackPanel Grid.Row="1" Spacing="16">
+      <!-- 开发模式开关 -->
+      <Border Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+              CornerRadius="{DynamicResource ControlCornerRadius}"
+              Padding="16,12">
+        <Grid ColumnDefinitions="*,Auto">
+          <StackPanel Grid.Column="0" VerticalAlignment="Center">
+            <TextBlock Text="开发模式"
+                       FontSize="14"
+                       Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+            <TextBlock Text="启用后自动扫描开发目录"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="0,2,0,0" />
+          </StackPanel>
+          <ToggleSwitch x:Name="DevModeToggle"
+                        Grid.Column="1"
+                        OnContent="开"
+                        OffContent="关" />
+        </Grid>
+      </Border>
+
+      <!-- 应用路径选择 -->
+      <Border Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+              CornerRadius="{DynamicResource ControlCornerRadius}"
+              Padding="16,12">
+        <Grid RowDefinitions="Auto,Auto" ColumnDefinitions="*,Auto">
+          <TextBlock Grid.Row="0" Grid.Column="0"
+                     Text="应用路径"
+                     FontSize="14"
+                     Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+          <TextBlock x:Name="PathTextBlock"
+                     Grid.Row="1" Grid.Column="0"
+                     Text="未选择"
+                     FontSize="12"
+                     Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                     TextTrimming="CharacterEllipsis"
+                     Margin="0,4,12,0" />
+          <Button x:Name="BrowseButton"
+                  Grid.Row="0" Grid.RowSpan="2" Grid.Column="1"
+                  Content="浏览..."
+                  VerticalAlignment="Center" />
+        </Grid>
+      </Border>
+
+      <!-- 提示信息 -->
+      <Border Background="{DynamicResource SystemFillColorCautionBackgroundBrush}"
+              CornerRadius="{DynamicResource ControlCornerRadius}"
+              Padding="12,10"
+              IsVisible="True">
+        <TextBlock Text="此功能仅供开发人员使用"
+                   FontSize="12"
+                   Foreground="{DynamicResource SystemFillColorCautionBrush}"
+                   TextWrapping="Wrap" />
+      </Border>
+    </StackPanel>
+
+    <!-- 按钮区域 -->
+    <StackPanel Grid.Row="2"
+                Orientation="Horizontal"
+                HorizontalAlignment="Right"
+                Spacing="12"
+                Margin="0,16,0,0">
+      <Button x:Name="CancelButton"
+              Content="取消"
+              Width="80"
+              Height="32" />
+      <Button x:Name="OkButton"
+              Content="确定"
+              Width="80"
+              Height="32"
+              Theme="{DynamicResource AccentButtonTheme}" />
+    </StackPanel>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/ErrorDebugWindow.axaml.cs

@@ -0,0 +1,172 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Platform.Storage;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 错误调试窗口 - 开发人员专用调试设置
+/// </summary>
+public partial class ErrorDebugWindow : Window
+{
+    private string? _selectedHostPath;
+    private bool _isInitialized = false;
+
+    /// <summary>
+    /// 是否启用了开发模式
+    /// </summary>
+    public bool IsDevModeEnabled { get; private set; }
+
+    /// <summary>
+    /// 选择的主程序路径
+    /// </summary>
+    public string? SelectedHostPath => _selectedHostPath;
+
+    public ErrorDebugWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        
+        // 延迟到窗口加载完成后再初始化组件
+        this.Loaded += OnWindowLoaded;
+    }
+
+    public ErrorDebugWindow(bool devModeEnabled, string? initialPath) : this()
+    {
+        IsDevModeEnabled = devModeEnabled;
+        _selectedHostPath = initialPath;
+    }
+
+    /// <summary>
+    /// 窗口加载完成事件
+    /// </summary>
+    private void OnWindowLoaded(object? sender, RoutedEventArgs e)
+    {
+        if (_isInitialized) return;
+        _isInitialized = true;
+        
+        Console.WriteLine("[ErrorDebugWindow] Window loaded, initializing components...");
+        InitializeComponents();
+        
+        // 设置初始值（在视觉树准备好后）
+        var devModeToggle = this.FindControl<ToggleSwitch>("DevModeToggle");
+        if (devModeToggle is not null)
+        {
+            devModeToggle.IsChecked = IsDevModeEnabled;
+        }
+
+        UpdatePathDisplay(_selectedHostPath);
+    }
+
+    private void InitializeComponents()
+    {
+        // 开发模式开关
+        var devModeToggle = this.FindControl<ToggleSwitch>("DevModeToggle");
+        if (devModeToggle is not null)
+        {
+            devModeToggle.IsCheckedChanged += (s, e) =>
+            {
+                IsDevModeEnabled = devModeToggle.IsChecked ?? false;
+                Console.WriteLine($"[ErrorDebugWindow] DevMode changed to: {IsDevModeEnabled}");
+            };
+            Console.WriteLine("[ErrorDebugWindow] DevModeToggle event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorDebugWindow] Failed to find DevModeToggle!");
+        }
+
+        // 浏览按钮
+        var browseButton = this.FindControl<Button>("BrowseButton");
+        if (browseButton is not null)
+        {
+            browseButton.Click += OnBrowseClick;
+            Console.WriteLine("[ErrorDebugWindow] BrowseButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorDebugWindow] Failed to find BrowseButton!");
+        }
+
+        // 确定按钮
+        var okButton = this.FindControl<Button>("OkButton");
+        if (okButton is not null)
+        {
+            okButton.Click += (s, e) => Close();
+            Console.WriteLine("[ErrorDebugWindow] OkButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorDebugWindow] Failed to find OkButton!");
+        }
+
+        // 取消按钮
+        var cancelButton = this.FindControl<Button>("CancelButton");
+        if (cancelButton is not null)
+        {
+            cancelButton.Click += (s, e) =>
+            {
+                // 取消时恢复原始状态
+                IsDevModeEnabled = false;
+                _selectedHostPath = null;
+                Console.WriteLine("[ErrorDebugWindow] Cancel clicked, resetting state");
+                Close();
+            };
+            Console.WriteLine("[ErrorDebugWindow] CancelButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorDebugWindow] Failed to find CancelButton!");
+        }
+        
+        Console.WriteLine("[ErrorDebugWindow] Components initialization completed");
+    }
+
+    /// <summary>
+    /// 浏览按钮点击
+    /// </summary>
+    private async void OnBrowseClick(object? sender, RoutedEventArgs e)
+    {
+        var storageProvider = StorageProvider;
+        if (storageProvider is null) return;
+
+        var options = new FilePickerOpenOptions
+        {
+            Title = "选择阑山桌面主程序",
+            AllowMultiple = false,
+            FileTypeFilter = new[]
+            {
+                new FilePickerFileType("可执行文件")
+                {
+                    Patterns = OperatingSystem.IsWindows()
+                        ? new[] { "*.exe" }
+                        : new[] { "*" }
+                }
+            }
+        };
+
+        var result = await storageProvider.OpenFilePickerAsync(options);
+        if (result.Count > 0)
+        {
+            _selectedHostPath = result[0].Path.LocalPath;
+            Console.WriteLine($"[ErrorDebugWindow] Selected host path: {_selectedHostPath}");
+            UpdatePathDisplay(_selectedHostPath);
+        }
+    }
+
+    /// <summary>
+    /// 更新路径显示
+    /// </summary>
+    private void UpdatePathDisplay(string? path)
+    {
+        var pathTextBlock = this.FindControl<TextBlock>("PathTextBlock");
+        if (pathTextBlock is not null)
+        {
+            pathTextBlock.Text = string.IsNullOrEmpty(path) ? "未选择" : path;
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorDebugWindow] Failed to find PathTextBlock!");
+        }
+    }
+}

LanMountainDesktop.Launcher/Views/ErrorWindow.axaml

@@ -0,0 +1,105 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        mc:Ignorable="d"
+        d:DesignWidth="520"
+        d:DesignHeight="280"
+        x:Class="LanMountainDesktop.Launcher.Views.ErrorWindow"
+        x:DataType="views:ErrorWindow"
+        Title="阑山桌面"
+        Width="520"
+        Height="280"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:ErrorWindow />
+  </Design.DataContext>
+
+  <!-- Fluent Design 风格对话框布局 -->
+  <Grid RowDefinitions="*,Auto">
+    <!-- 主内容区域：左侧图标 + 右侧文字 -->
+    <Grid Grid.Row="0" Margin="24,24,24,16" ColumnDefinitions="Auto,*">
+      
+      <!-- 左侧：错误图标（可点击进入调试模式） -->
+      <Border x:Name="ErrorIconBorder"
+              Grid.Column="0"
+              Width="48"
+              Height="48"
+              Margin="0,4,16,0"
+              Background="{DynamicResource SystemFillColorCriticalBackgroundBrush}"
+              CornerRadius="24"
+              VerticalAlignment="Top">
+        <TextBlock Text="&#xEA39;"
+                   FontSize="24"
+                   FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                   Foreground="{DynamicResource SystemFillColorCriticalBrush}"
+                   HorizontalAlignment="Center"
+                   VerticalAlignment="Center"/>
+      </Border>
+      
+      <!-- 右侧：标题 + 内容 -->
+      <StackPanel Grid.Column="1" Spacing="8">
+        <!-- 标题 -->
+        <TextBlock x:Name="TitleText"
+                   Text="启动失败"
+                   FontSize="18"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                   TextWrapping="Wrap"/>
+        
+        <!-- 错误信息 -->
+        <TextBlock x:Name="ErrorMessageText"
+                   Text="找不到阑山桌面应用程序。"
+                   FontSize="14"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="20"/>
+        
+        <!-- 建议信息 -->
+        <TextBlock x:Name="SuggestionText"
+                   Text="请确保应用程序已正确安装，或尝试重新安装。"
+                   FontSize="13"
+                   Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="18"
+                   Margin="0,4,0,0"/>
+      </StackPanel>
+    </Grid>
+
+    <!-- 底部：按钮区域 -->
+    <Border Grid.Row="1"
+            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Padding="24,16">
+      <Grid ColumnDefinitions="*,Auto">
+        <Button x:Name="OpenLogButton"
+                Grid.Column="0"
+                Content="打开日志"
+                Width="100"
+                Height="32"
+                FontSize="13"
+                HorizontalAlignment="Left"/>
+        <StackPanel Grid.Column="1"
+                    Orientation="Horizontal" 
+                    Spacing="8">
+          <Button x:Name="ExitButton"
+                  Content="退出"
+                  Width="80"
+                  Height="32"
+                  FontSize="13"/>
+          <Button x:Name="RetryButton"
+                  Content="重试"
+                  Width="80"
+                  Height="32"
+                  FontSize="13"
+                  Theme="{DynamicResource AccentButtonTheme}"/>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs

@@ -0,0 +1,542 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Platform.Storage;
+using LanMountainDesktop.Launcher.Services;
+using System.Diagnostics;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 错误窗口 - 显示启动失败信息，支持调试模式（隐藏入口）
+/// </summary>
+public partial class ErrorWindow : Window
+{
+    private readonly TaskCompletionSource<ErrorWindowResult> _completionSource = new();
+    private int _iconClickCount = 0;
+    private const int DebugModeClickThreshold = 5;
+    private bool _isDebugMode = false;
+    private string? _customHostPath;
+    private bool _devModeEnabled;
+
+    public ErrorWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+
+        // 先加载保存的状态
+        _devModeEnabled = LoadDevModeStateInternal();
+        _customHostPath = LoadCustomHostPathInternal();
+
+        // 延迟到窗口加载完成后再初始化组件，确保视觉树已准备好
+        this.Loaded += OnWindowLoaded;
+        this.Opened += OnWindowOpened;
+    }
+
+    /// <summary>
+    /// 窗口加载完成事件 - 视觉树已准备好
+    /// </summary>
+    private void OnWindowLoaded(object? sender, RoutedEventArgs e)
+    {
+        Console.WriteLine("[ErrorWindow] Window loaded, initializing components...");
+        InitializeComponents();
+    }
+
+    /// <summary>
+    /// 窗口打开事件
+    /// </summary>
+    private void OnWindowOpened(object? sender, EventArgs e)
+    {
+        Console.WriteLine("[ErrorWindow] Window opened and visible");
+    }
+
+    private void InitializeComponents()
+    {
+        Console.WriteLine("[ErrorWindow] Initializing components...");
+        
+        // 错误图标点击事件（进入调试模式 - 隐藏功能）
+        var errorIconBorder = this.FindControl<Border>("ErrorIconBorder");
+        if (errorIconBorder is not null)
+        {
+            errorIconBorder.PointerPressed += OnErrorIconClick;
+            Console.WriteLine("[ErrorWindow] ErrorIconBorder event bound successfully");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorWindow] Failed to find ErrorIconBorder!");
+        }
+
+        // 按钮事件
+        var retryButton = this.FindControl<Button>("RetryButton");
+        var exitButton = this.FindControl<Button>("ExitButton");
+        var openLogButton = this.FindControl<Button>("OpenLogButton");
+
+        if (retryButton is not null)
+        {
+            retryButton.Click += OnRetryClick;
+            Console.WriteLine("[ErrorWindow] RetryButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorWindow] Failed to find RetryButton!");
+        }
+
+        if (exitButton is not null)
+        {
+            exitButton.Click += OnExitClick;
+            Console.WriteLine("[ErrorWindow] ExitButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorWindow] Failed to find ExitButton!");
+        }
+
+        if (openLogButton is not null)
+        {
+            openLogButton.Click += OnOpenLogClick;
+            Console.WriteLine("[ErrorWindow] OpenLogButton event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[ErrorWindow] Failed to find OpenLogButton!");
+        }
+        
+        Console.WriteLine("[ErrorWindow] Components initialization completed");
+    }
+
+    /// <summary>
+    /// 设置错误消息
+    /// </summary>
+    public void SetErrorMessage(string message)
+    {
+        var errorText = this.FindControl<TextBlock>("ErrorMessageText");
+        if (errorText is not null)
+        {
+            errorText.Text = message;
+        }
+    }
+
+    /// <summary>
+    /// 设置调试模式
+    /// </summary>
+    public void SetDebugMode(bool isDebugMode)
+    {
+        _isDebugMode = isDebugMode;
+        var titleText = this.FindControl<TextBlock>("TitleText");
+        if (titleText is not null && isDebugMode)
+        {
+            titleText.Text = "[调试模式] 错误页面";
+        }
+    }
+
+    /// <summary>
+    /// 获取用户选择的主程序路径
+    /// </summary>
+    public string? GetCustomHostPath() => _customHostPath;
+
+    /// <summary>
+    /// 是否启用了开发模式
+    /// </summary>
+    public bool IsDevModeEnabled() => _devModeEnabled;
+
+    /// <summary>
+    /// 等待用户选择
+    /// </summary>
+    public Task<ErrorWindowResult> WaitForChoiceAsync()
+    {
+        return _completionSource.Task;
+    }
+
+    /// <summary>
+    /// 错误图标点击事件 - 连续点击 5 次进入调试模式（隐藏功能）
+    /// </summary>
+    private void OnErrorIconClick(object? sender, Avalonia.Input.PointerPressedEventArgs e)
+    {
+        _iconClickCount++;
+
+        if (_iconClickCount >= DebugModeClickThreshold && !_isDebugMode)
+        {
+            EnterDebugMode();
+        }
+    }
+
+    /// <summary>
+    /// 进入调试模式 - 显示调试窗口
+    /// </summary>
+    private async void EnterDebugMode()
+    {
+        _isDebugMode = true;
+
+        // 创建并显示调试窗口
+        var debugWindow = new ErrorDebugWindow(_devModeEnabled, _customHostPath)
+        {
+            WindowStartupLocation = WindowStartupLocation.CenterOwner
+        };
+
+        // 订阅调试窗口关闭事件
+        debugWindow.Closed += (s, e) =>
+        {
+            // 更新状态
+            _devModeEnabled = debugWindow.IsDevModeEnabled;
+            _customHostPath = debugWindow.SelectedHostPath;
+
+            // 保存开发模式状态和自定义路径
+            SaveDevModeStateInternal(_devModeEnabled);
+            SaveCustomHostPathInternal(_customHostPath);
+
+            // 如果启用了开发模式且没有选择路径，自动扫描
+            if (_devModeEnabled && string.IsNullOrEmpty(_customHostPath))
+            {
+                ScanDevPaths();
+                // 扫描到路径后也保存
+                if (!string.IsNullOrEmpty(_customHostPath))
+                {
+                    SaveCustomHostPathInternal(_customHostPath);
+                }
+            }
+        };
+
+        await debugWindow.ShowDialog(this);
+    }
+
+    /// <summary>
+    /// 扫描开发路径
+    /// </summary>
+    private void ScanDevPaths()
+    {
+        var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";
+        var possiblePaths = new[]
+        {
+            Path.Combine(AppContext.BaseDirectory, "..", "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "LanMountainDesktop", "bin", "Debug", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "LanMountainDesktop", "bin", "Release", "net10.0", executable),
+            Path.Combine(AppContext.BaseDirectory, "..", "dev-test", "app-1.0.0-dev", executable),
+        };
+
+        foreach (var path in possiblePaths.Select(Path.GetFullPath).Distinct())
+        {
+            if (File.Exists(path))
+            {
+                _customHostPath = path;
+                break;
+            }
+        }
+    }
+
+    /// <summary>
+    /// 获取配置存储的基础目录
+    /// </summary>
+    private static string GetConfigBaseDirectory()
+    {
+        try
+        {
+            // 优先使用 LocalApplicationData（用户状态）
+            var appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+            if (!string.IsNullOrEmpty(appData))
+            {
+                var configDir = Path.Combine(appData, "LanMountainDesktop", ".launcher");
+                return configDir;
+            }
+        }
+        catch
+        {
+            // LocalApplicationData 不可用，回退到 Launcher 所在目录
+        }
+
+        // 回退方案：使用 Launcher 所在目录
+        try
+        {
+            var launcherDir = AppContext.BaseDirectory;
+            var configDir = Path.Combine(launcherDir, ".launcher");
+            return configDir;
+        }
+        catch
+        {
+            // 最后的兜底：使用当前目录
+            return Path.Combine(Directory.GetCurrentDirectory(), ".launcher");
+        }
+    }
+
+    /// <summary>
+    /// 确保配置目录存在
+    /// </summary>
+    private static bool EnsureConfigDirectory(string dirPath)
+    {
+        try
+        {
+            if (!Directory.Exists(dirPath))
+            {
+                Directory.CreateDirectory(dirPath);
+                Console.WriteLine($"[ErrorWindow] Created config directory: {dirPath}");
+            }
+            return true;
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to create config directory: {ex.Message}");
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// 保存开发模式状态（内部方法）
+    /// </summary>
+    private static void SaveDevModeStateInternal(bool enabled)
+    {
+        try
+        {
+            var configDir = GetConfigBaseDirectory();
+            if (!EnsureConfigDirectory(configDir))
+            {
+                Console.Error.WriteLine("[ErrorWindow] Cannot save dev mode: config directory unavailable");
+                return;
+            }
+
+            var devModeFile = Path.Combine(configDir, "devmode.config");
+            File.WriteAllText(devModeFile, enabled ? "1" : "0");
+            Console.WriteLine($"[ErrorWindow] Dev mode state saved: {enabled}");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to save dev mode state: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 加载开发模式状态（内部方法）
+    /// </summary>
+    private static bool LoadDevModeStateInternal()
+    {
+        try
+        {
+            var configDir = GetConfigBaseDirectory();
+            var devModeFile = Path.Combine(configDir, "devmode.config");
+
+            if (File.Exists(devModeFile))
+            {
+                var content = File.ReadAllText(devModeFile).Trim();
+                var enabled = content == "1";
+                Console.WriteLine($"[ErrorWindow] Dev mode state loaded: {enabled}");
+                return enabled;
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to load dev mode state: {ex.Message}");
+        }
+        return false;
+    }
+
+    /// <summary>
+    /// 保存自定义主程序路径（内部方法）
+    /// </summary>
+    private static void SaveCustomHostPathInternal(string? path)
+    {
+        try
+        {
+            var configDir = GetConfigBaseDirectory();
+            if (!EnsureConfigDirectory(configDir))
+            {
+                Console.Error.WriteLine("[ErrorWindow] Cannot save custom path: config directory unavailable");
+                return;
+            }
+
+            var hostPathFile = Path.Combine(configDir, "custom-host-path.config");
+            File.WriteAllText(hostPathFile, path ?? string.Empty);
+            Console.WriteLine($"[ErrorWindow] Custom host path saved: {path}");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to save custom host path: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 加载自定义主程序路径（内部方法）
+    /// </summary>
+    private static string? LoadCustomHostPathInternal()
+    {
+        try
+        {
+            var configDir = GetConfigBaseDirectory();
+            var hostPathFile = Path.Combine(configDir, "custom-host-path.config");
+
+            if (File.Exists(hostPathFile))
+            {
+                var content = File.ReadAllText(hostPathFile).Trim();
+                // 验证路径是否仍然有效
+                if (!string.IsNullOrEmpty(content) && File.Exists(content))
+                {
+                    Console.WriteLine($"[ErrorWindow] Custom host path loaded: {content}");
+                    return content;
+                }
+
+                // 路径已失效，清理配置文件
+                if (!string.IsNullOrEmpty(content))
+                {
+                    Console.WriteLine($"[ErrorWindow] Custom host path is no longer valid: {content}");
+                    try
+                    {
+                        File.Delete(hostPathFile);
+                        Console.WriteLine("[ErrorWindow] Cleared invalid custom host path");
+                    }
+                    catch (Exception clearEx)
+                    {
+                        Console.Error.WriteLine($"[ErrorWindow] Failed to clear invalid host path: {clearEx.Message}");
+                    }
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to load custom host path: {ex.Message}");
+        }
+        return null;
+    }
+
+    /// <summary>
+    /// 检查是否启用了开发模式（静态方法，启动时调用）
+    /// </summary>
+    public static bool CheckDevModeEnabled()
+    {
+        return LoadDevModeStateInternal();
+    }
+
+    /// <summary>
+    /// 获取保存的自定义主程序路径（静态方法，启动时调用）
+    /// </summary>
+    public static string? GetSavedCustomHostPath()
+    {
+        return LoadCustomHostPathInternal();
+    }
+
+    private void OnRetryClick(object? sender, RoutedEventArgs e)
+    {
+        _completionSource.TrySetResult(ErrorWindowResult.Retry);
+    }
+
+    private void OnExitClick(object? sender, RoutedEventArgs e)
+    {
+        _completionSource.TrySetResult(ErrorWindowResult.Exit);
+    }
+
+    /// <summary>
+    /// 打开日志文件
+    /// </summary>
+    private async void OnOpenLogClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            var logFilePath = Logger.GetLogFilePath();
+
+            if (string.IsNullOrEmpty(logFilePath) || !File.Exists(logFilePath))
+            {
+                // 如果没有日志文件，打开日志目录
+                var logDir = Path.GetDirectoryName(logFilePath);
+                if (!string.IsNullOrEmpty(logDir) && Directory.Exists(logDir))
+                {
+                    OpenFolder(logDir);
+                }
+                else
+                {
+                    // 尝试打开配置目录
+                    var configDir = GetConfigBaseDirectory();
+                    if (Directory.Exists(configDir))
+                    {
+                        OpenFolder(configDir);
+                    }
+                    else
+                    {
+                        Console.WriteLine("[ErrorWindow] No log file or directory available");
+                    }
+                }
+                return;
+            }
+
+            Console.WriteLine($"[ErrorWindow] Opening log file: {logFilePath}");
+            OpenFile(logFilePath);
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to open log: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 打开文件
+    /// </summary>
+    private static void OpenFile(string filePath)
+    {
+        try
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "explorer.exe",
+                    Arguments = $"\"{filePath}\"",
+                    UseShellExecute = true
+                });
+            }
+            else if (OperatingSystem.IsMacOS())
+            {
+                Process.Start("open", filePath);
+            }
+            else if (OperatingSystem.IsLinux())
+            {
+                Process.Start("xdg-open", filePath);
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to open file: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 打开文件夹
+    /// </summary>
+    private static void OpenFolder(string folderPath)
+    {
+        try
+        {
+            if (OperatingSystem.IsWindows())
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "explorer.exe",
+                    Arguments = $"\"{folderPath}\"",
+                    UseShellExecute = true
+                });
+            }
+            else if (OperatingSystem.IsMacOS())
+            {
+                Process.Start("open", folderPath);
+            }
+            else if (OperatingSystem.IsLinux())
+            {
+                Process.Start("xdg-open", folderPath);
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[ErrorWindow] Failed to open folder: {ex.Message}");
+        }
+    }
+}
+
+/// <summary>
+/// 错误窗口用户选择结果
+/// </summary>
+public enum ErrorWindowResult
+{
+    /// <summary>
+    /// 重试
+    /// </summary>
+    Retry,
+
+    /// <summary>
+    /// 退出
+    /// </summary>
+    Exit
+}

LanMountainDesktop.Launcher/Views/LoadingDetailsWindow.axaml

@@ -0,0 +1,234 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        mc:Ignorable="d"
+        d:DesignWidth="600"
+        d:DesignHeight="500"
+        x:Class="LanMountainDesktop.Launcher.Views.LoadingDetailsWindow"
+        Title="LanMountain Desktop - Loading Details"
+        Width="600"
+        Height="500"
+        WindowStartupLocation="CenterScreen"
+        CanResize="True"
+        MinWidth="500"
+        MinHeight="400"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        Icon="/Assets/logo.ico">
+
+  <Grid RowDefinitions="Auto,*,Auto,Auto">
+    <Border Grid.Row="0"
+            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Padding="20,16">
+      <Grid ColumnDefinitions="*,Auto">
+        <StackPanel Grid.Column="0" Spacing="4">
+          <TextBlock Text="Starting LanMountain Desktop"
+                     FontSize="18"
+                     FontWeight="SemiBold"
+                     Foreground="{DynamicResource TextFillColorPrimaryBrush}"/>
+          <TextBlock x:Name="SubtitleText"
+                     Text="Initializing..."
+                     FontSize="13"
+                     Foreground="{DynamicResource TextFillColorSecondaryBrush}"/>
+        </StackPanel>
+        <Border Grid.Column="1"
+                Background="{DynamicResource AccentFillColorDefaultBrush}"
+                CornerRadius="12"
+                Padding="12,6"
+                VerticalAlignment="Center">
+          <TextBlock x:Name="PercentText"
+                     Text="0%"
+                     FontSize="16"
+                     FontWeight="Bold"
+                     Foreground="White"/>
+        </Border>
+      </Grid>
+    </Border>
+
+    <Grid Grid.Row="1" Margin="16,12">
+      <Grid.RowDefinitions>
+        <RowDefinition Height="Auto"/>
+        <RowDefinition Height="Auto"/>
+        <RowDefinition Height="*"/>
+      </Grid.RowDefinitions>
+
+      <ProgressBar x:Name="OverallProgressBar"
+                   Grid.Row="0"
+                   Height="8"
+                   Minimum="0"
+                   Maximum="100"
+                   Value="0"
+                   CornerRadius="4"
+                   Margin="0,0,0,16"/>
+
+      <Border Grid.Row="1"
+              Background="{DynamicResource CardBackgroundFillColorSecondaryBrush}"
+              CornerRadius="8"
+              Padding="16,12"
+              Margin="0,0,0,12">
+        <Grid RowDefinitions="Auto,Auto,Auto" ColumnDefinitions="Auto,*">
+          <Border Grid.Row="0" Grid.RowSpan="3" Grid.Column="0"
+                  Width="40"
+                  Height="40"
+                  CornerRadius="20"
+                  Background="{DynamicResource AccentFillColorDefaultBrush}"
+                  Margin="0,0,12,0"
+                  VerticalAlignment="Center">
+            <TextBlock x:Name="CurrentItemIcon"
+                       Text="&#xE768;"
+                       FontSize="20"
+                       FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                       Foreground="White"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center"/>
+          </Border>
+
+          <TextBlock x:Name="CurrentItemName"
+                     Grid.Row="0" Grid.Column="1"
+                     Text="Initializing..."
+                     FontSize="15"
+                     FontWeight="SemiBold"
+                     Foreground="{DynamicResource TextFillColorPrimaryBrush}"/>
+
+          <TextBlock x:Name="CurrentItemDescription"
+                     Grid.Row="1" Grid.Column="1"
+                     Text="Preparing components"
+                     FontSize="13"
+                     Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                     Margin="0,4,0,0"/>
+
+          <Grid Grid.Row="2" Grid.Column="1" Margin="0,8,0,0">
+            <ProgressBar x:Name="CurrentItemProgress"
+                         Height="4"
+                         Minimum="0"
+                         Maximum="100"
+                         Value="0"
+                         CornerRadius="2"/>
+          </Grid>
+        </Grid>
+      </Border>
+
+      <Border Grid.Row="2"
+              Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+              CornerRadius="8">
+        <Grid RowDefinitions="Auto,*">
+          <Grid Grid.Row="0" Margin="12,8" ColumnDefinitions="*,Auto,Auto">
+            <TextBlock Grid.Column="0"
+                       Text="Loading Items"
+                       FontSize="12"
+                       FontWeight="SemiBold"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"/>
+            <TextBlock x:Name="CompletedCountText"
+                       Grid.Column="1"
+                       Text="0"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="0,0,4,0"/>
+            <TextBlock Grid.Column="2"
+                       Text="Done"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"/>
+          </Grid>
+
+          <ScrollViewer Grid.Row="1"
+                        VerticalScrollBarVisibility="Auto"
+                        Margin="8,0,8,8">
+            <ItemsControl x:Name="LoadingItemsList">
+              <ItemsControl.ItemTemplate>
+                <DataTemplate DataType="views:LoadingItemViewModel">
+                  <Grid ColumnDefinitions="Auto,*,Auto,Auto"
+                        Margin="4,3"
+                        Opacity="{Binding Opacity}">
+                    <TextBlock Grid.Column="0"
+                               Text="{Binding StatusIcon}"
+                               FontSize="14"
+                               FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                               Foreground="{Binding StatusColor}"
+                               Margin="0,0,8,0"
+                               VerticalAlignment="Center"/>
+
+                    <TextBlock Grid.Column="1"
+                               Text="{Binding Name}"
+                               FontSize="13"
+                               Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                               TextTrimming="CharacterEllipsis"
+                               VerticalAlignment="Center"/>
+
+                    <TextBlock Grid.Column="2"
+                               Text="{Binding ProgressText}"
+                               FontSize="12"
+                               Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                               Margin="8,0"
+                               VerticalAlignment="Center"/>
+
+                    <Border Grid.Column="3"
+                            Background="{Binding TypeBackground}"
+                            CornerRadius="4"
+                            Padding="6,2"
+                            VerticalAlignment="Center">
+                      <TextBlock Text="{Binding TypeLabel}"
+                                 FontSize="11"
+                                 Foreground="{Binding TypeForeground}"/>
+                    </Border>
+                  </Grid>
+                </DataTemplate>
+              </ItemsControl.ItemTemplate>
+            </ItemsControl>
+          </ScrollViewer>
+        </Grid>
+      </Border>
+    </Grid>
+
+    <Border x:Name="ErrorPanel"
+            Grid.Row="2"
+            Background="{DynamicResource SystemFillColorCriticalBackgroundBrush}"
+            BorderBrush="{DynamicResource SystemFillColorCriticalBrush}"
+            BorderThickness="1"
+            CornerRadius="8"
+            Padding="12,10"
+            Margin="16,0,16,12"
+            IsVisible="False">
+      <Grid ColumnDefinitions="Auto,*">
+        <TextBlock Grid.Column="0"
+                   Text="&#xE783;"
+                   FontSize="16"
+                   FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                   Foreground="{DynamicResource SystemFillColorCriticalBrush}"
+                   Margin="0,0,8,0"
+                   VerticalAlignment="Center"/>
+        <TextBlock x:Name="ErrorText"
+                   Grid.Column="1"
+                   Text="An error occurred while loading."
+                   FontSize="13"
+                   Foreground="{DynamicResource SystemFillColorCriticalBrush}"
+                   TextWrapping="Wrap"/>
+      </Grid>
+    </Border>
+
+    <Border Grid.Row="3"
+            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Padding="16,12">
+      <Grid ColumnDefinitions="*,Auto">
+        <TextBlock x:Name="VersionText"
+                   Grid.Column="0"
+                   Text="v1.0.0"
+                   FontSize="12"
+                   Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                   VerticalAlignment="Center"/>
+        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="8">
+          <Button x:Name="DetailsButton"
+                  Content="Details"
+                  Width="90"
+                  Height="32"
+                  FontSize="13"/>
+          <Button x:Name="CancelButton"
+                  Content="Cancel"
+                  Width="90"
+                  Height="32"
+                  FontSize="13"/>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/LoadingDetailsWindow.axaml.cs

@@ -0,0 +1,392 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Media;
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 鍔犺浇璇︽儏绐楀彛 - 鏄剧ず璇︾粏鐨勫姞杞界姸鎬佸拰杩涘害
+/// </summary>
+public partial class LoadingDetailsWindow : Window
+{
+    private readonly ObservableCollection<LoadingItemViewModel> _items = new();
+    private readonly DispatcherTimer _updateTimer;
+    private DateTimeOffset _startTime;
+
+    public LoadingDetailsWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+
+        var itemsList = this.FindControl<ItemsControl>("LoadingItemsList");
+        if (itemsList != null)
+        {
+            itemsList.ItemsSource = _items;
+        }
+
+        _updateTimer = new DispatcherTimer
+        {
+            Interval = TimeSpan.FromMilliseconds(100)
+        };
+        _updateTimer.Tick += OnUpdateTimerTick;
+
+        _startTime = DateTimeOffset.UtcNow;
+    }
+
+    /// <summary>
+    /// 绐楀彛鍔犺浇瀹屾垚
+    /// </summary>
+    protected override void OnLoaded(RoutedEventArgs e)
+    {
+        base.OnLoaded(e);
+        _updateTimer.Start();
+    }
+
+    /// <summary>
+    /// 绐楀彛鍏抽棴
+    /// </summary>
+    protected override void OnClosing(WindowClosingEventArgs e)
+    {
+        _updateTimer.Stop();
+        base.OnClosing(e);
+    }
+
+    /// <summary>
+    /// 鏇存柊鍔犺浇鐘舵€?    /// </summary>
+    public void UpdateLoadingState(LoadingStateMessage state)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            try
+            {
+                // 鏇存柊鏍囬<E98F8D>鍜屽壇鏍囬<E98F8D>
+                UpdateHeader(state);
+
+                // 鏇存柊鏁翠綋杩涘害
+                UpdateOverallProgress(state);
+
+                UpdateCurrentItem(state);
+
+                // 鏇存柊鍒楄〃
+                UpdateItemsList(state);
+
+                // 鏇存柊閿欒<E996BF>淇℃伅
+                UpdateErrorPanel(state);
+
+                // 鏇存柊瀹屾垚璁℃暟
+                UpdateCompletedCount(state);
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"[LoadingDetailsWindow] Error updating state: {ex.Message}");
+            }
+        });
+    }
+
+    /// <summary>
+    /// 鏇存柊鏍囬<E98F8D>
+    /// </summary>
+    private void UpdateHeader(LoadingStateMessage state)
+    {
+        var subtitleText = this.FindControl<TextBlock>("SubtitleText");
+        if (subtitleText != null)
+        {
+            subtitleText.Text = GetStageDescription(state.Stage);
+        }
+    }
+
+    /// <summary>
+    /// 鏇存柊鏁翠綋杩涘害
+    /// </summary>
+    private void UpdateOverallProgress(LoadingStateMessage state)
+    {
+        var progressBar = this.FindControl<ProgressBar>("OverallProgressBar");
+        var percentText = this.FindControl<TextBlock>("PercentText");
+
+        if (progressBar != null)
+        {
+            progressBar.Value = state.OverallProgressPercent;
+        }
+
+        if (percentText != null)
+        {
+            percentText.Text = $"{state.OverallProgressPercent}%";
+        }
+    }
+
+    /// <summary>
+    /// 鏇存柊褰撳墠娲诲姩椤?    /// </summary>
+    private void UpdateCurrentItem(LoadingStateMessage state)
+    {
+        var currentItem = state.ActiveItems.FirstOrDefault();
+        if (currentItem == null) return;
+
+        var nameText = this.FindControl<TextBlock>("CurrentItemName");
+        var descText = this.FindControl<TextBlock>("CurrentItemDescription");
+        var progressBar = this.FindControl<ProgressBar>("CurrentItemProgress");
+        var iconText = this.FindControl<TextBlock>("CurrentItemIcon");
+
+        if (nameText != null)
+        {
+            nameText.Text = currentItem.Name;
+        }
+
+        if (descText != null)
+        {
+            descText.Text = currentItem.Message ?? GetItemDescription(currentItem);
+        }
+
+        if (progressBar != null)
+        {
+            progressBar.Value = currentItem.ProgressPercent;
+        }
+
+        if (iconText != null)
+        {
+            iconText.Text = GetItemIcon(currentItem.Type);
+        }
+    }
+
+    /// <summary>
+    /// 鏇存柊鍒楄〃
+    /// </summary>
+    private void UpdateItemsList(LoadingStateMessage state)
+    {
+        foreach (var item in state.ActiveItems)
+        {
+            var existing = _items.FirstOrDefault(i => i.Id == item.Id);
+            if (existing != null)
+            {
+                existing.UpdateFrom(item);
+            }
+            else
+            {
+                _items.Add(new LoadingItemViewModel(item));
+            }
+        }
+
+        // 绉婚櫎宸插畬鎴愮殑椤癸紙淇濈暀鏈€杩戝畬鎴愮殑5涓<35>級
+        var completedItems = _items.Where(i => i.State == LoadingState.Completed).ToList();
+        if (completedItems.Count > 5)
+        {
+            var itemsToRemove = completedItems.OrderBy(i => i.CompletedTime).Take(completedItems.Count - 5);
+            foreach (var item in itemsToRemove)
+            {
+                _items.Remove(item);
+            }
+        }
+
+        // 鎸夌姸鎬佹帓搴忥細杩涜<E69DA9>涓?-> 绛夊緟涓?-> 宸插畬鎴?-> 澶辫触
+        var sortedItems = _items.OrderBy(i => GetStatePriority(i.State)).ToList();
+        _items.Clear();
+        foreach (var item in sortedItems)
+        {
+            _items.Add(item);
+        }
+    }
+
+    /// <summary>
+    /// 鏇存柊閿欒<E996BF>闈㈡澘
+    /// </summary>
+    private void UpdateErrorPanel(LoadingStateMessage state)
+    {
+        var errorPanel = this.FindControl<Border>("ErrorPanel");
+        var errorText = this.FindControl<TextBlock>("ErrorText");
+
+        if (errorPanel != null)
+        {
+            errorPanel.IsVisible = state.HasErrors;
+        }
+
+        if (errorText != null && state.ErrorMessages?.Any() == true)
+        {
+            errorText.Text = string.Join("\n", state.ErrorMessages.Take(3));
+        }
+    }
+
+    /// <summary>
+    /// 鏇存柊瀹屾垚璁℃暟
+    /// </summary>
+    private void UpdateCompletedCount(LoadingStateMessage state)
+    {
+        var countText = this.FindControl<TextBlock>("CompletedCountText");
+        if (countText != null)
+        {
+            countText.Text = state.CompletedCount.ToString();
+        }
+    }
+
+    /// <summary>
+    /// 瀹氭椂鏇存柊
+    /// </summary>
+    private void OnUpdateTimerTick(object? sender, EventArgs e)
+    {
+        // 鍙<>互鍦ㄨ繖閲屾坊鍔犳椂闂存樉绀虹瓑瀹炴椂鏇存柊
+    }
+
+    /// <summary>
+    /// 鑾峰彇闃舵<E99783>鎻忚堪
+    /// </summary>
+    private static string GetStageDescription(StartupStage stage) => stage switch
+    {
+        StartupStage.Initializing => "正在初始化系统...",
+        StartupStage.LoadingSettings => "正在加载设置...",
+        StartupStage.LoadingPlugins => "正在加载插件...",
+        StartupStage.InitializingUI => "正在初始化界面...",
+        StartupStage.ShellInitialized => "桌面外壳已初始化",
+        StartupStage.DesktopVisible => "桌面已经可见",
+        StartupStage.ActivationRedirected => "已激活现有实例",
+        StartupStage.ActivationFailed => "现有实例激活失败",
+        StartupStage.Ready => "加载完成",
+        _ => "正在加载..."
+    };
+
+    /// <summary>
+    /// 鑾峰彇椤规弿杩?    /// </summary>
+    private static string GetItemDescription(LoadingItem item)
+    {
+        if (!string.IsNullOrEmpty(item.Description))
+            return item.Description;
+
+        return item.Type switch
+        {
+            LoadingItemType.Plugin => "姝ｅ湪鍔犺浇鎻掍欢...",
+            LoadingItemType.Component => "姝ｅ湪鍔犺浇缁勪欢...",
+            LoadingItemType.Resource => "姝ｅ湪鍔犺浇璧勬簮...",
+            LoadingItemType.Data => "姝ｅ湪鍔犺浇鏁版嵁...",
+            LoadingItemType.Network => "姝ｅ湪涓嬭浇...",
+            _ => "姝ｅ湪澶勭悊..."
+        };
+    }
+
+    /// <summary>
+    /// 鑾峰彇椤瑰浘鏍?    /// </summary>
+    private static string GetItemIcon(LoadingItemType type) => type switch
+    {
+        LoadingItemType.Plugin => "\uE768",
+        LoadingItemType.Component => "\uE7C4",
+        LoadingItemType.Resource => "\uE7C5",
+        LoadingItemType.Data => "\uE7C6",
+        LoadingItemType.Network => "\uE774",
+        LoadingItemType.Settings => "\uE713",
+        LoadingItemType.System => "\uE7C7",
+        _ => "\uE768"
+    };
+
+    /// <summary>
+    /// 鑾峰彇鐘舵€佷紭鍏堢骇
+    /// </summary>
+    private static int GetStatePriority(LoadingState state) => state switch
+    {
+        LoadingState.InProgress => 0,
+        LoadingState.Pending => 1,
+        LoadingState.Completed => 2,
+        LoadingState.Failed => 3,
+        LoadingState.Timeout => 4,
+        LoadingState.Cancelled => 5,
+        _ => 6
+    };
+}
+
+/// <summary>
+/// 鍔犺浇椤硅<E6A4A4>鍥炬ā鍨?/// </summary>
+public class LoadingItemViewModel : INotifyPropertyChanged
+{
+    public string Id { get; }
+    public string Name { get; private set; }
+    public LoadingItemType Type { get; private set; }
+    public LoadingState State { get; private set; }
+    public int ProgressPercent { get; private set; }
+    public DateTimeOffset? CompletedTime { get; private set; }
+
+    public string StatusIcon => GetStatusIcon(State);
+    public IBrush StatusColor => GetStatusColor(State);
+    public string ProgressText => State == LoadingState.Completed ? "瀹屾垚" : $"{ProgressPercent}%";
+    public string TypeLabel => GetTypeLabel(Type);
+    public IBrush TypeBackground => GetTypeBackground(Type);
+    public IBrush TypeForeground => GetTypeForeground(Type);
+    public double Opacity => State == LoadingState.Completed ? 0.6 : 1.0;
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    public LoadingItemViewModel(LoadingItem item)
+    {
+        Id = item.Id;
+        UpdateFrom(item);
+    }
+
+    public void UpdateFrom(LoadingItem item)
+    {
+        Name = item.Name;
+        Type = item.Type;
+        State = item.State;
+        ProgressPercent = item.ProgressPercent;
+
+        if (State == LoadingState.Completed && !CompletedTime.HasValue)
+        {
+            CompletedTime = DateTimeOffset.UtcNow;
+        }
+
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(string.Empty));
+    }
+
+    private static string GetStatusIcon(LoadingState state) => state switch
+    {
+        LoadingState.Pending => "\uE7C3",
+        LoadingState.InProgress => "\uE768",
+        LoadingState.Completed => "\uE73E",
+        LoadingState.Failed => "\uE783",
+        LoadingState.Timeout => "\uE71A",
+        LoadingState.Cancelled => "\uE711",
+        _ => "\uE7C3"
+    };
+
+    private static IBrush GetStatusColor(LoadingState state) => state switch
+    {
+        LoadingState.Pending => new SolidColorBrush(Colors.Gray),
+        LoadingState.InProgress => new SolidColorBrush(Colors.DodgerBlue),
+        LoadingState.Completed => new SolidColorBrush(Colors.Green),
+        LoadingState.Failed => new SolidColorBrush(Colors.Red),
+        LoadingState.Timeout => new SolidColorBrush(Colors.Orange),
+        LoadingState.Cancelled => new SolidColorBrush(Colors.Gray),
+        _ => new SolidColorBrush(Colors.Gray)
+    };
+
+    private static string GetTypeLabel(LoadingItemType type) => type switch
+    {
+        LoadingItemType.Plugin => "鎻掍欢",
+        LoadingItemType.Component => "缁勪欢",
+        LoadingItemType.Resource => "璧勬簮",
+        LoadingItemType.Data => "鏁版嵁",
+        LoadingItemType.Network => "缃戠粶",
+        LoadingItemType.Settings => "璁剧疆",
+        LoadingItemType.System => "绯荤粺",
+        _ => "鍏朵粬"
+    };
+
+    private static IBrush GetTypeBackground(LoadingItemType type) => type switch
+    {
+        LoadingItemType.Plugin => new SolidColorBrush(Color.Parse("#E3F2FD")),
+        LoadingItemType.Component => new SolidColorBrush(Color.Parse("#F3E5F5")),
+        LoadingItemType.Resource => new SolidColorBrush(Color.Parse("#E8F5E9")),
+        LoadingItemType.Data => new SolidColorBrush(Color.Parse("#FFF3E0")),
+        LoadingItemType.Network => new SolidColorBrush(Color.Parse("#E0F7FA")),
+        _ => new SolidColorBrush(Color.Parse("#F5F5F5"))
+    };
+
+    private static IBrush GetTypeForeground(LoadingItemType type) => type switch
+    {
+        LoadingItemType.Plugin => new SolidColorBrush(Color.Parse("#1976D2")),
+        LoadingItemType.Component => new SolidColorBrush(Color.Parse("#7B1FA2")),
+        LoadingItemType.Resource => new SolidColorBrush(Color.Parse("#388E3C")),
+        LoadingItemType.Data => new SolidColorBrush(Color.Parse("#F57C00")),
+        LoadingItemType.Network => new SolidColorBrush(Color.Parse("#0097A7")),
+        _ => new SolidColorBrush(Color.Parse("#616161"))
+    };
+}
+

LanMountainDesktop.Launcher/Views/MigrationPromptWindow.axaml

@@ -0,0 +1,149 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        mc:Ignorable="d"
+        d:DesignWidth="520"
+        d:DesignHeight="360"
+        x:Class="LanMountainDesktop.Launcher.Views.MigrationPromptWindow"
+        x:DataType="views:MigrationPromptWindow"
+        Title="阑山桌面 - 版本迁移"
+        Width="520"
+        Height="360"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:MigrationPromptWindow />
+  </Design.DataContext>
+
+  <Grid RowDefinitions="*,Auto">
+    <!-- 主内容区域 -->
+    <Grid Grid.Row="0" Margin="24,24,24,16" ColumnDefinitions="Auto,*">
+
+      <!-- 左侧：信息图标 -->
+      <Border Grid.Column="0"
+              Width="48"
+              Height="48"
+              Margin="0,4,16,0"
+              Background="{DynamicResource SystemFillColorCautionBackgroundBrush}"
+              CornerRadius="24"
+              VerticalAlignment="Top">
+        <TextBlock Text="&#xE7BA;"
+                   FontSize="24"
+                   FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                   Foreground="{DynamicResource SystemFillColorCautionBrush}"
+                   HorizontalAlignment="Center"
+                   VerticalAlignment="Center"/>
+      </Border>
+
+      <!-- 右侧：内容 -->
+      <StackPanel Grid.Column="1" Spacing="12">
+        <!-- 标题 -->
+        <TextBlock Text="检测到旧版本"
+                   FontSize="18"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                   TextWrapping="Wrap"/>
+
+        <!-- 说明文字 -->
+        <TextBlock x:Name="DescriptionText"
+                   Text="检测到您的系统中安装了旧版本的阑山桌面（0.8.4）。新版本采用了全新的架构，建议卸载旧版本以获得更好的体验。"
+                   FontSize="14"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="20"/>
+
+        <!-- 老版本信息卡片 -->
+        <Border Margin="0,8,0,0"
+                Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+                CornerRadius="8"
+                Padding="16,12">
+          <Grid RowDefinitions="Auto,Auto,Auto" ColumnDefinitions="Auto,*">
+            <!-- 版本号 -->
+            <TextBlock Grid.Row="0" Grid.Column="0"
+                       Text="版本："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"/>
+            <TextBlock x:Name="VersionText"
+                       Grid.Row="0" Grid.Column="1"
+                       Text="0.8.4"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="8,0,0,0"/>
+
+            <!-- 安装路径 -->
+            <TextBlock Grid.Row="1" Grid.Column="0"
+                       Text="位置："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                       Margin="0,4,0,0"/>
+            <TextBlock x:Name="PathText"
+                       Grid.Row="1" Grid.Column="1"
+                       Text="C:\Program Files\LanMountainDesktop"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       TextTrimming="CharacterEllipsis"
+                       Margin="8,4,0,0"/>
+
+            <!-- 安装类型 -->
+            <TextBlock Grid.Row="2" Grid.Column="0"
+                       Text="类型："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                       Margin="0,4,0,0"/>
+            <TextBlock x:Name="TypeText"
+                       Grid.Row="2" Grid.Column="1"
+                       Text="安装版"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="8,4,0,0"/>
+          </Grid>
+        </Border>
+
+        <!-- 提示信息 -->
+        <TextBlock Text="卸载旧版本不会影响新版本的使用，您的个人数据将保留。"
+                   FontSize="12"
+                   Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                   TextWrapping="Wrap"
+                   Margin="0,4,0,0"/>
+      </StackPanel>
+    </Grid>
+
+    <!-- 底部：按钮区域 -->
+    <Border Grid.Row="1"
+            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Padding="24,16">
+      <Grid ColumnDefinitions="*,Auto">
+        <!-- 左侧：查看位置按钮 -->
+        <Button x:Name="ShowLocationButton"
+                Grid.Column="0"
+                Content="查看位置"
+                Width="100"
+                Height="32"
+                FontSize="13"
+                HorizontalAlignment="Left"/>
+
+        <!-- 右侧：操作按钮 -->
+        <StackPanel Grid.Column="1"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="SkipButton"
+                  Content="暂不处理"
+                  Width="100"
+                  Height="32"
+                  FontSize="13"/>
+          <Button x:Name="UninstallButton"
+                  Content="卸载旧版本"
+                  Width="100"
+                  Height="32"
+                  FontSize="13"
+                  Theme="{DynamicResource AccentButtonTheme}"/>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/MigrationPromptWindow.axaml.cs

@@ -0,0 +1,157 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using LanMountainDesktop.Launcher.Services;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 迁移提示窗口 - 提示用户卸载旧版本
+/// </summary>
+public partial class MigrationPromptWindow : Window
+{
+    private readonly TaskCompletionSource<MigrationResult> _completionSource = new();
+    private LegacyVersionInfo? _legacyInfo;
+
+    public MigrationPromptWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        InitializeEventHandlers();
+    }
+
+    /// <summary>
+    /// 设置老版本信息
+    /// </summary>
+    public void SetLegacyInfo(LegacyVersionInfo info)
+    {
+        _legacyInfo = info;
+
+        // 更新 UI
+        var versionText = this.FindControl<TextBlock>("VersionText");
+        var pathText = this.FindControl<TextBlock>("PathText");
+        var typeText = this.FindControl<TextBlock>("TypeText");
+        var descriptionText = this.FindControl<TextBlock>("DescriptionText");
+
+        if (versionText != null)
+        {
+            versionText.Text = info.Version;
+        }
+
+        if (pathText != null)
+        {
+            pathText.Text = info.InstallPath;
+        }
+
+        if (typeText != null)
+        {
+            typeText.Text = info.InstallType switch
+            {
+                LegacyInstallType.Registry => "安装版",
+                LegacyInstallType.Portable => "便携版",
+                _ => "未知"
+            };
+        }
+
+        if (descriptionText != null)
+        {
+            descriptionText.Text = $"检测到您的系统中安装了旧版本的阑山桌面（{info.Version}）。新版本采用了全新的架构，建议卸载旧版本以获得更好的体验。";
+        }
+    }
+
+    /// <summary>
+    /// 初始化事件处理程序
+    /// </summary>
+    private void InitializeEventHandlers()
+    {
+        var showLocationButton = this.FindControl<Button>("ShowLocationButton");
+        var skipButton = this.FindControl<Button>("SkipButton");
+        var uninstallButton = this.FindControl<Button>("UninstallButton");
+
+        if (showLocationButton != null)
+        {
+            showLocationButton.Click += OnShowLocationClick;
+        }
+
+        if (skipButton != null)
+        {
+            skipButton.Click += OnSkipClick;
+        }
+
+        if (uninstallButton != null)
+        {
+            uninstallButton.Click += OnUninstallClick;
+        }
+    }
+
+    /// <summary>
+    /// 查看位置按钮点击
+    /// </summary>
+    private void OnShowLocationClick(object? sender, RoutedEventArgs e)
+    {
+        if (_legacyInfo != null)
+        {
+            LegacyVersionDetector.ShowInExplorer(_legacyInfo.InstallPath);
+        }
+    }
+
+    /// <summary>
+    /// 跳过按钮点击
+    /// </summary>
+    private void OnSkipClick(object? sender, RoutedEventArgs e)
+    {
+        _completionSource.TrySetResult(MigrationResult.Skipped);
+        Close();
+    }
+
+    /// <summary>
+    /// 卸载按钮点击
+    /// </summary>
+    private void OnUninstallClick(object? sender, RoutedEventArgs e)
+    {
+        if (_legacyInfo != null)
+        {
+            LegacyVersionDetector.OpenUninstallInterface(_legacyInfo);
+        }
+
+        _completionSource.TrySetResult(MigrationResult.UninstallOpened);
+        Close();
+    }
+
+    /// <summary>
+    /// 等待用户选择
+    /// </summary>
+    public Task<MigrationResult> WaitForChoiceAsync()
+    {
+        return _completionSource.Task;
+    }
+
+    /// <summary>
+    /// 窗口关闭事件
+    /// </summary>
+    protected override void OnClosing(WindowClosingEventArgs e)
+    {
+        // 如果还没有完成，标记为跳过
+        if (!_completionSource.Task.IsCompleted)
+        {
+            _completionSource.TrySetResult(MigrationResult.Skipped);
+        }
+
+        base.OnClosing(e);
+    }
+}
+
+/// <summary>
+/// 迁移结果
+/// </summary>
+public enum MigrationResult
+{
+    /// <summary>
+    /// 用户选择跳过
+    /// </summary>
+    Skipped,
+
+    /// <summary>
+    /// 已打开卸载界面
+    /// </summary>
+    UninstallOpened
+}

LanMountainDesktop.Launcher/Views/OobeWindow.axaml

@@ -0,0 +1,76 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        mc:Ignorable="d"
+        d:DesignWidth="600"
+        d:DesignHeight="500"
+        x:Class="LanMountainDesktop.Launcher.Views.OobeWindow"
+        x:DataType="views:OobeWindow"
+        Title="欢迎使用阑山桌面"
+        Width="600"
+        Height="500"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:OobeWindow />
+  </Design.DataContext>
+
+  <Grid x:Name="ContentGrid">
+    <!-- 主内容区域 -->
+    <Grid Margin="48" RowDefinitions="*,Auto">
+      <!-- 中央内容区域 -->
+      <StackPanel Grid.Row="0" 
+                  VerticalAlignment="Center" 
+                  HorizontalAlignment="Center"
+                  Spacing="24">
+        
+        <!-- 顶部：完成状态勾号图标 -->
+        <Border Width="80"
+                Height="80"
+                Background="{DynamicResource SystemFillColorSuccessBackgroundBrush}"
+                CornerRadius="40"
+                HorizontalAlignment="Center">
+          <ui:SymbolIcon Symbol="Accept"
+                         FontSize="40"
+                         Foreground="{DynamicResource SystemFillColorSuccessBrush}"
+                         HorizontalAlignment="Center"
+                         VerticalAlignment="Center"/>
+        </Border>
+        
+        <!-- 中央：欢迎文字 -->
+        <StackPanel Spacing="8" HorizontalAlignment="Center">
+          <TextBlock Text="欢迎使用阑山桌面"
+                     FontSize="28"
+                     FontWeight="SemiBold"
+                     Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                     HorizontalAlignment="Center" />
+          <TextBlock Text="你的桌面，不止一面"
+                     FontSize="14"
+                     Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                     HorizontalAlignment="Center" />
+        </StackPanel>
+        
+      </StackPanel>
+
+      <!-- 底部：圆形开始按钮 -->
+      <Button Grid.Row="1"
+              x:Name="EnterButton"
+              HorizontalAlignment="Center"
+              Width="56"
+              Height="56"
+              Margin="0,0,0,16"
+              Theme="{DynamicResource AccentButtonTheme}"
+              CornerRadius="28">
+        <ui:SymbolIcon Symbol="Forward"
+                       FontSize="24"
+                       Foreground="{DynamicResource TextOnAccentFillColorPrimaryBrush}"/>
+      </Button>
+    </Grid>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/OobeWindow.axaml.cs

@@ -0,0 +1,197 @@
+using Avalonia;
+using Avalonia.Animation;
+using Avalonia.Animation.Easings;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Media;
+using Avalonia.Styling;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// OOBE（首次使用体验）窗口 - 欢迎页面
+/// </summary>
+public partial class OobeWindow : Window
+{
+    private readonly TaskCompletionSource<bool> _completionSource = new();
+    private bool _isTransitioning = false;
+
+    public OobeWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+
+        // 延迟到窗口加载完成后再初始化
+        this.Loaded += OnWindowLoaded;
+        this.Opened += OnWindowOpened;
+    }
+
+    /// <summary>
+    /// 窗口加载完成事件
+    /// </summary>
+    private void OnWindowLoaded(object? sender, RoutedEventArgs e)
+    {
+        Console.WriteLine("[OobeWindow] Window loaded, initializing components...");
+
+        var enterButton = this.FindControl<Button>("EnterButton");
+        if (enterButton is not null)
+        {
+            enterButton.Click += OnEnterClick;
+            Console.WriteLine("[OobeWindow] EnterButton event bound successfully");
+        }
+        else
+        {
+            Console.Error.WriteLine("[OobeWindow] Failed to find EnterButton!");
+        }
+    }
+
+    /// <summary>
+    /// 窗口打开事件 - 播放入场动画
+    /// </summary>
+    private async void OnWindowOpened(object? sender, EventArgs e)
+    {
+        Console.WriteLine("[OobeWindow] Window opened, playing entrance animation...");
+        await PlayEntranceAnimationAsync();
+    }
+
+    /// <summary>
+    /// 播放入场动画
+    /// </summary>
+    private async Task PlayEntranceAnimationAsync()
+    {
+        try
+        {
+            // 获取内容元素
+            var contentGrid = this.FindControl<Grid>("ContentGrid");
+            if (contentGrid is null)
+            {
+                // 如果没有命名网格，直接返回
+                return;
+            }
+
+            // 创建淡入动画
+            var fadeInAnimation = new Animation
+            {
+                Duration = TimeSpan.FromMilliseconds(600),
+                Easing = new CubicEaseOut(),
+                Children =
+                {
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(OpacityProperty, 0.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(0)
+                    },
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(OpacityProperty, 1.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(600)
+                    }
+                }
+            };
+
+            // 创建向上滑动动画
+            var slideUpAnimation = new Animation
+            {
+                Duration = TimeSpan.FromMilliseconds(600),
+                Easing = new CubicEaseOut(),
+                Children =
+                {
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(TranslateTransform.YProperty, 30.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(0)
+                    },
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(TranslateTransform.YProperty, 0.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(600)
+                    }
+                }
+            };
+
+            // 应用动画
+            await fadeInAnimation.RunAsync(contentGrid);
+            await slideUpAnimation.RunAsync(contentGrid);
+
+            Console.WriteLine("[OobeWindow] Entrance animation completed");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[OobeWindow] Error playing entrance animation: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 等待用户点击开始按钮
+    /// </summary>
+    public Task WaitForEnterAsync() => _completionSource.Task;
+
+    /// <summary>
+    /// 进入按钮点击事件
+    /// </summary>
+    private async void OnEnterClick(object? sender, RoutedEventArgs e)
+    {
+        if (_isTransitioning) return;
+        _isTransitioning = true;
+
+        Console.WriteLine("[OobeWindow] Enter button clicked, starting transition...");
+
+        try
+        {
+            // 播放退出动画
+            await PlayExitAnimationAsync();
+
+            // 完成 OOBE
+            _completionSource.TrySetResult(true);
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[OobeWindow] Error during transition: {ex.Message}");
+            _completionSource.TrySetResult(true);
+        }
+    }
+
+    /// <summary>
+    /// 播放退出动画
+    /// </summary>
+    private async Task PlayExitAnimationAsync()
+    {
+        try
+        {
+            var contentGrid = this.FindControl<Grid>("ContentGrid");
+            if (contentGrid is null)
+            {
+                // 如果没有命名网格，直接延迟后返回
+                await Task.Delay(200);
+                return;
+            }
+
+            // 创建淡出动画
+            var fadeOutAnimation = new Animation
+            {
+                Duration = TimeSpan.FromMilliseconds(200),
+                Easing = new CubicEaseIn(),
+                Children =
+                {
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(OpacityProperty, 1.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(0)
+                    },
+                    new KeyFrame
+                    {
+                        Setters = { new Setter(OpacityProperty, 0.0) },
+                        KeyTime = TimeSpan.FromMilliseconds(200)
+                    }
+                }
+            };
+
+            await fadeOutAnimation.RunAsync(contentGrid);
+            Console.WriteLine("[OobeWindow] Exit animation completed");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[OobeWindow] Error playing exit animation: {ex.Message}");
+        }
+    }
+}

LanMountainDesktop.Launcher/Views/SplashWindow.axaml

@@ -0,0 +1,87 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        mc:Ignorable="d"
+        d:DesignWidth="480"
+        d:DesignHeight="320"
+        x:Class="LanMountainDesktop.Launcher.Views.SplashWindow"
+        x:DataType="views:SplashWindow"
+        Title="LanMountain Desktop"
+        Width="480"
+        Height="320"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        SystemDecorations="None"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:SplashWindow />
+  </Design.DataContext>
+
+  <Grid>
+    <!-- 左上角：应用名称 -->
+    <TextBlock x:Name="AppNameText"
+               Text="LanMountain Desktop"
+               FontSize="24"
+               FontWeight="SemiBold"
+               VerticalAlignment="Top"
+               HorizontalAlignment="Left"
+               Margin="24,24,0,0"
+               Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+
+    <!-- 底部区域：进度条和状态 -->
+    <Grid VerticalAlignment="Bottom" Margin="24,0,24,24">
+      <Grid.RowDefinitions>
+        <RowDefinition Height="Auto"/>
+        <RowDefinition Height="Auto"/>
+      </Grid.RowDefinitions>
+      
+      <!-- 第一行：左下角版本信息，右下角阶段文字 -->
+      <Grid Grid.Row="0" Margin="0,0,0,8">
+        <Grid.ColumnDefinitions>
+          <ColumnDefinition Width="*"/>
+          <ColumnDefinition Width="Auto"/>
+        </Grid.ColumnDefinitions>
+        
+        <!-- 左下角：版本和开发代号 - 可点击打开开发者界面（隐藏功能） -->
+        <Border x:Name="VersionTextBorder"
+                Grid.Column="0"
+                Background="Transparent"
+                Cursor="Hand"
+                HorizontalAlignment="Left"
+                VerticalAlignment="Bottom">
+          <TextBlock x:Name="VersionText"
+                     FontSize="11"
+                     Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                     Opacity="0.8"
+                     Text="1.0.0 (Administrate)" />
+        </Border>
+        
+        <!-- 右下角：阶段文字 -->
+        <TextBlock x:Name="StatusText"
+                   Grid.Column="1"
+                   FontSize="11"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   HorizontalAlignment="Right"
+                   VerticalAlignment="Bottom"
+                   Opacity="0.8"
+                   Text="Initializing..." />
+      </Grid>
+      
+      <!-- 底部：进度条 -->
+      <ProgressBar x:Name="ProgressIndicator"
+                   Grid.Row="1"
+                   Minimum="0"
+                   Maximum="100"
+                   Value="0"
+                   Height="4"
+                   IsIndeterminate="False"
+                   Foreground="{DynamicResource AccentFillColorDefaultBrush}"
+                   Background="{DynamicResource ControlStrokeColorDefaultBrush}" />
+    </Grid>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/SplashWindow.axaml.cs

@@ -0,0 +1,250 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Services;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 启动画面窗口 - 简洁设计
+/// </summary>
+public partial class SplashWindow : Window, ISplashStageReporter
+{
+    private int _versionTextClickCount = 0;
+    private const int DebugModeClickThreshold = 5;
+    private bool _isDebugModeOpened = false;
+
+    public SplashWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        
+        // 延迟到窗口加载完成后再绑定事件
+        this.Loaded += OnWindowLoaded;
+    }
+
+    /// <summary>
+    /// 窗口加载完成事件
+    /// </summary>
+    private void OnWindowLoaded(object? sender, RoutedEventArgs e)
+    {
+        Console.WriteLine("[SplashWindow] Window loaded, binding events...");
+        
+        // 绑定版本文本点击事件（隐藏功能：点击5次打开开发者界面）
+        var versionTextBorder = this.FindControl<Border>("VersionTextBorder");
+        if (versionTextBorder is not null)
+        {
+            versionTextBorder.PointerPressed += OnVersionTextClick;
+            Console.WriteLine("[SplashWindow] VersionTextBorder click event bound");
+        }
+        else
+        {
+            Console.Error.WriteLine("[SplashWindow] Failed to find VersionTextBorder!");
+        }
+    }
+
+    /// <summary>
+    /// 版本文本点击事件 - 连续点击5次打开开发者界面（隐藏功能）
+    /// </summary>
+    private void OnVersionTextClick(object? sender, PointerPressedEventArgs e)
+    {
+        if (_isDebugModeOpened) return;
+        
+        _versionTextClickCount++;
+        Console.WriteLine($"[SplashWindow] Version text clicked {_versionTextClickCount}/{DebugModeClickThreshold}");
+
+        if (_versionTextClickCount >= DebugModeClickThreshold)
+        {
+            OpenDebugWindow();
+        }
+    }
+
+    /// <summary>
+    /// 打开开发者调试窗口
+    /// </summary>
+    private async void OpenDebugWindow()
+    {
+        _isDebugModeOpened = true;
+        Console.WriteLine("[SplashWindow] Opening debug window...");
+
+        try
+        {
+            // 加载保存的状态
+            var devModeEnabled = ErrorWindow.CheckDevModeEnabled();
+            var customHostPath = ErrorWindow.GetSavedCustomHostPath();
+
+            var debugWindow = new ErrorDebugWindow(devModeEnabled, customHostPath)
+            {
+                WindowStartupLocation = WindowStartupLocation.CenterScreen
+            };
+
+            // 订阅窗口关闭事件以保存状态
+            debugWindow.Closed += (s, e) =>
+            {
+                Console.WriteLine("[SplashWindow] Debug window closed");
+                _isDebugModeOpened = false;
+                _versionTextClickCount = 0;
+            };
+
+            await debugWindow.ShowDialog(this);
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[SplashWindow] Error opening debug window: {ex.Message}");
+            _isDebugModeOpened = false;
+            _versionTextClickCount = 0;
+        }
+    }
+
+    /// <summary>
+    /// 更新进度和状态
+    /// </summary>
+    public void Report(string stage, string message)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var progressIndicator = this.FindControl<ProgressBar>("ProgressIndicator");
+            
+            if (statusText is null || progressIndicator is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] Controls not found: StatusText={statusText != null}, ProgressIndicator={progressIndicator != null}");
+                return;
+            }
+
+            // 更新状态文本
+            statusText.Text = message;
+
+            // 根据阶段更新进度
+            var progress = ResolveProgress(stage);
+            if (progress > 0)
+            {
+                progressIndicator.IsIndeterminate = false;
+                progressIndicator.Value = progress;
+            }
+            else
+            {
+                progressIndicator.IsIndeterminate = true;
+            }
+        });
+    }
+
+    /// <summary>
+    /// 更新进度（0-100）
+    /// </summary>
+    public void UpdateProgress(int percent, string? message = null)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var progressIndicator = this.FindControl<ProgressBar>("ProgressIndicator");
+            
+            if (statusText is null || progressIndicator is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] Controls not found in UpdateProgress");
+                return;
+            }
+
+            if (!string.IsNullOrEmpty(message))
+            {
+                statusText.Text = message;
+            }
+
+            progressIndicator.IsIndeterminate = false;
+            progressIndicator.Value = Math.Clamp(percent, 0, 100);
+        });
+    }
+
+    /// <summary>
+    /// 更新状态文本
+    /// </summary>
+    public void UpdateStatus(string message)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            if (statusText is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] StatusText not found in UpdateStatus");
+                return;
+            }
+            statusText.Text = message;
+        });
+    }
+
+    /// <summary>
+    /// 报告阶段和进度（0-100）
+    /// </summary>
+    public void ReportStage(string stage, int progress)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var progressIndicator = this.FindControl<ProgressBar>("ProgressIndicator");
+            
+            if (statusText is null || progressIndicator is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] Controls not found in ReportStage");
+                return;
+            }
+
+            statusText.Text = stage;
+            progressIndicator.IsIndeterminate = false;
+            progressIndicator.Value = Math.Clamp(progress, 0, 100);
+        });
+    }
+
+    /// <summary>
+    /// 设置版本和开发代号
+    /// </summary>
+    public void SetVersionInfo(string version, string codename)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var versionText = this.FindControl<TextBlock>("VersionText");
+            if (versionText is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] VersionText not found in SetVersionInfo");
+                return;
+            }
+            versionText.Text = $"{version} ({codename})";
+        });
+    }
+
+    /// <summary>
+    /// 设置调试模式
+    /// </summary>
+    public void SetDebugMode(bool isDebugMode)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            if (statusText is null)
+            {
+                Console.Error.WriteLine($"[SplashWindow] StatusText not found in SetDebugMode");
+                return;
+            }
+            if (isDebugMode)
+            {
+                statusText.Text = "[Debug Mode] Splash Preview";
+            }
+        });
+    }
+
+    /// <summary>
+    /// 根据阶段名称解析进度值
+    /// </summary>
+    private static int ResolveProgress(string stage)
+    {
+        return stage.ToLowerInvariant() switch
+        {
+            "initializing" => 10,
+            "update" => 30,
+            "plugins" => 50,
+            "launch" => 70,
+            "ready" => 100,
+            _ => 0
+        };
+    }
+}

LanMountainDesktop.Launcher/Views/UpdateWindow.axaml

@@ -0,0 +1,108 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        mc:Ignorable="d"
+        d:DesignWidth="480"
+        d:DesignHeight="320"
+        x:Class="LanMountainDesktop.Launcher.Views.UpdateWindow"
+        x:DataType="views:UpdateWindow"
+        Title="阑山桌面 - 更新"
+        Width="480"
+        Height="320"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        SystemDecorations="None"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:UpdateWindow />
+  </Design.DataContext>
+
+  <Grid>
+    <!-- 顶部：应用名称和最小化按钮 -->
+    <Grid VerticalAlignment="Top" Margin="24,24,24,0">
+      <StackPanel Orientation="Horizontal" HorizontalAlignment="Left" VerticalAlignment="Center" Spacing="8">
+        <TextBlock x:Name="TitleText"
+                   Text="阑山桌面"
+                   FontSize="24"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+        <Border Background="{DynamicResource AccentFillColorDefaultBrush}"
+                CornerRadius="4"
+                Padding="6,2"
+                VerticalAlignment="Center">
+          <TextBlock Text="Update"
+                     FontSize="11"
+                     FontWeight="SemiBold"
+                     Foreground="{DynamicResource TextOnAccentFillColorPrimaryBrush}" />
+        </Border>
+      </StackPanel>
+
+      <!-- 最小化按钮 -->
+      <Button x:Name="MinimizeButton"
+              HorizontalAlignment="Right"
+              VerticalAlignment="Center"
+              Width="32"
+              Height="32"
+              Background="Transparent"
+              BorderThickness="0">
+        <TextBlock Text="&#xE921;"
+                   FontSize="12"
+                   FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   HorizontalAlignment="Center"
+                   VerticalAlignment="Center"/>
+      </Button>
+    </Grid>
+
+    <!-- 底部区域：进度条和状态 -->
+    <Grid VerticalAlignment="Bottom" Margin="24,0,24,24">
+      <Grid.RowDefinitions>
+        <RowDefinition Height="Auto"/>
+        <RowDefinition Height="Auto"/>
+      </Grid.RowDefinitions>
+      
+      <!-- 第一行：左下角状态，右下角百分比 -->
+      <Grid Grid.Row="0" Margin="0,0,0,8">
+        <Grid.ColumnDefinitions>
+          <ColumnDefinition Width="*"/>
+          <ColumnDefinition Width="Auto"/>
+        </Grid.ColumnDefinitions>
+        
+        <!-- 左下角：状态文字 -->
+        <TextBlock x:Name="StatusText"
+                   Grid.Column="0"
+                   FontSize="11"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   Opacity="0.8"
+                   HorizontalAlignment="Left"
+                   VerticalAlignment="Bottom"
+                   Text="正在更新，请稍候..." />
+        
+        <!-- 右下角：百分比 -->
+        <TextBlock x:Name="PercentText"
+                   Grid.Column="1"
+                   FontSize="11"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   Opacity="0.8"
+                   HorizontalAlignment="Right"
+                   VerticalAlignment="Bottom"
+                   Text="0%" />
+      </Grid>
+      
+      <!-- 底部：进度条 -->
+      <ProgressBar x:Name="ProgressIndicator"
+                   Grid.Row="1"
+                   Minimum="0"
+                   Maximum="100"
+                   Value="0"
+                   Height="4"
+                   IsIndeterminate="True"
+                   Foreground="{DynamicResource AccentFillColorDefaultBrush}"
+                   Background="{DynamicResource ControlStrokeColorDefaultBrush}" />
+    </Grid>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/UpdateWindow.axaml.cs

@@ -0,0 +1,123 @@
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using Avalonia.Threading;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 更新进度窗口 - 用于 apply-update 命令模式下显示更新/插件升级进度
+/// </summary>
+public partial class UpdateWindow : Window
+{
+    public UpdateWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        InitializeEventHandlers();
+    }
+
+    /// <summary>
+    /// 初始化事件处理程序
+    /// </summary>
+    private void InitializeEventHandlers()
+    {
+        var minimizeButton = this.FindControl<Button>("MinimizeButton");
+        if (minimizeButton != null)
+        {
+            minimizeButton.Click += (s, e) =>
+            {
+                this.WindowState = WindowState.Minimized;
+            };
+        }
+    }
+
+    /// <summary>
+    /// 更新状态和进度
+    /// </summary>
+    public void Report(string stage, string message, int progressPercent = -1)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var progressIndicator = this.FindControl<ProgressBar>("ProgressIndicator");
+            var percentText = this.FindControl<TextBlock>("PercentText");
+
+            if (statusText is null || progressIndicator is null || percentText is null)
+            {
+                Console.Error.WriteLine($"[UpdateWindow] Controls not found in Report: StatusText={statusText != null}, ProgressIndicator={progressIndicator != null}, PercentText={percentText != null}");
+                return;
+            }
+
+            statusText.Text = message;
+
+            if (progressPercent >= 0)
+            {
+                progressIndicator.IsIndeterminate = false;
+                progressIndicator.Value = progressPercent;
+                percentText.Text = $"{progressPercent}%";
+            }
+            else
+            {
+                progressIndicator.IsIndeterminate = true;
+                percentText.Text = "";
+            }
+        });
+    }
+
+    /// <summary>
+    /// 显示更新完成状态
+    /// </summary>
+    public void ReportComplete(bool success, string? errorMessage = null)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var progressIndicator = this.FindControl<ProgressBar>("ProgressIndicator");
+            var percentText = this.FindControl<TextBlock>("PercentText");
+            var titleText = this.FindControl<TextBlock>("TitleText");
+
+            if (statusText is null || progressIndicator is null || percentText is null || titleText is null)
+            {
+                Console.Error.WriteLine($"[UpdateWindow] Controls not found in ReportComplete");
+                return;
+            }
+
+            progressIndicator.IsIndeterminate = false;
+            progressIndicator.Value = 100;
+            percentText.Text = "100%";
+
+            if (success)
+            {
+                statusText.Text = "更新完成";
+            }
+            else
+            {
+                titleText.Text = "更新失败";
+                statusText.Text = errorMessage ?? "更新过程中发生错误";
+            }
+        });
+    }
+
+    /// <summary>
+    /// 设置调试模式
+    /// </summary>
+    public void SetDebugMode(bool isDebugMode)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            var statusText = this.FindControl<TextBlock>("StatusText");
+            var titleText = this.FindControl<TextBlock>("TitleText");
+
+            if (statusText is null || titleText is null)
+            {
+                Console.Error.WriteLine($"[UpdateWindow] Controls not found in SetDebugMode");
+                return;
+            }
+
+            if (isDebugMode)
+            {
+                titleText.Text = "[调试模式] 更新页面";
+                statusText.Text = "预览更新进度界面";
+            }
+        });
+    }
+}

LanMountainDesktop.Launcher/app.manifest

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="LanMountainDesktop.Launcher"/>
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+    <security>
+      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+        <!-- 明确指定不需要管理员权限 -->
+        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+  
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows 10/11 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />
+    </application>
+  </compatibility>
+</assembly>

LanMountainDesktop.PluginIsolation.Contracts/AppearanceContracts.cs

@@ -0,0 +1,12 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public sealed record PluginAppearanceSnapshotRequest(string SessionId);
+
+public sealed record PluginAppearanceSnapshot(
+    string ThemeVariant,
+    string? AccentColor = null,
+    double CornerRadiusScale = 1.0,
+    IReadOnlyDictionary<string, double>? CornerRadiusTokens = null,
+    IReadOnlyDictionary<string, string>? ResourceAliases = null);
+
+public sealed record PluginAppearanceChangedNotification(PluginAppearanceSnapshot Snapshot);

LanMountainDesktop.PluginIsolation.Contracts/DiagnosticsContracts.cs

@@ -0,0 +1,45 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public sealed record PluginHeartbeatPing(
+    string SessionId,
+    DateTimeOffset SentAtUtc);
+
+public sealed record PluginHeartbeatPong(
+    string SessionId,
+    DateTimeOffset ReceivedAtUtc);
+
+public sealed record PluginLogEntry(
+    string Level,
+    string Category,
+    string Message,
+    DateTimeOffset TimestampUtc,
+    string? Exception = null);
+
+public static class PluginLogLevels
+{
+    public const string Trace = "trace";
+    public const string Debug = "debug";
+    public const string Information = "information";
+    public const string Warning = "warning";
+    public const string Error = "error";
+    public const string Critical = "critical";
+}
+
+public sealed record PluginFaultReport(
+    string SessionId,
+    string FaultKind,
+    bool IsFatal,
+    string Message,
+    string? StackTrace = null,
+    int? WorkerProcessId = null,
+    int? ExitCode = null,
+    DateTimeOffset? OccurredAtUtc = null);
+
+public static class PluginFaultKinds
+{
+    public const string ManagedException = "managed-exception";
+    public const string NativeCrash = "native-crash";
+    public const string WatchdogTimeout = "watchdog-timeout";
+    public const string StartupFailure = "startup-failure";
+    public const string ForcedTermination = "forced-termination";
+}

LanMountainDesktop.PluginIsolation.Contracts/LanMountainDesktop.PluginIsolation.Contracts.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Version>1.0.0</Version>
+    <PackageId>LanMountainDesktop.PluginIsolation.Contracts</PackageId>
+    <IsPackable>true</IsPackable>
+    <Authors>LanMountainDesktop</Authors>
+    <Description>Transport-neutral IPC contracts for the LanMountainDesktop plugin isolation architecture.</Description>
+    <PackageTags>LanMountainDesktop;Plugin;IPC;Isolation;Contracts</PackageTags>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <RepositoryUrl>https://github.com/wwiinnddyy/LanMountainDesktop</RepositoryUrl>
+    <RepositoryType>git</RepositoryType>
+    <PackageLicenseExpression>LGPL-3.0-or-later</PackageLicenseExpression>
+    <Copyright>Copyright (c) LanMountainDesktop Contributors</Copyright>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="README.md" Pack="true" PackagePath="\" />
+  </ItemGroup>
+</Project>

LanMountainDesktop.PluginIsolation.Contracts/LifecycleContracts.cs

@@ -0,0 +1,33 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public sealed record PluginInitializeRequest(
+    string PluginId,
+    string SessionId,
+    string HostPipeName,
+    string DataDirectory,
+    IReadOnlyDictionary<string, string>? StartupProperties = null);
+
+public sealed record PluginInitializeResponse(
+    bool Succeeded,
+    string? ErrorCode = null,
+    string? ErrorMessage = null);
+
+public sealed record PluginStopRequest(
+    string Reason,
+    bool RestartRequested = false);
+
+public sealed record PluginRestartRequest(string Reason);
+
+public sealed record PluginLifecycleStateChanged(
+    string State,
+    string? Detail = null);
+
+public static class PluginLifecycleStates
+{
+    public const string Starting = "starting";
+    public const string Ready = "ready";
+    public const string Degraded = "degraded";
+    public const string Stopping = "stopping";
+    public const string Stopped = "stopped";
+    public const string Faulted = "faulted";
+}

LanMountainDesktop.PluginIsolation.Contracts/PluginCapabilityDeclaration.cs

@@ -0,0 +1,17 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public sealed record PluginCapabilityDeclaration(
+    string Name,
+    string Version,
+    string? Description = null);
+
+public static class PluginCapabilityNames
+{
+    public const string Settings = "settings";
+    public const string Appearance = "appearance";
+    public const string DesktopComponentUi = "ui.desktop-component";
+    public const string ComponentEditorUi = "ui.component-editor";
+    public const string SettingsPageUi = "ui.settings-page";
+    public const string Logging = "diagnostics.log";
+    public const string FaultReporting = "diagnostics.fault";
+}

LanMountainDesktop.PluginIsolation.Contracts/PluginIpcErrorCodes.cs

@@ -0,0 +1,15 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public static class PluginIpcErrorCodes
+{
+    public const string ProtocolMismatch = "protocol_mismatch";
+    public const string SessionRejected = "session_rejected";
+    public const string CapabilityDenied = "capability_denied";
+    public const string InvalidRequest = "invalid_request";
+    public const string UnsupportedRoute = "unsupported_route";
+    public const string SettingsConflict = "settings_conflict";
+    public const string UiAttachRejected = "ui_attach_rejected";
+    public const string WorkerFaulted = "worker_faulted";
+    public const string WorkerExited = "worker_exited";
+    public const string HeartbeatTimeout = "heartbeat_timeout";
+}

LanMountainDesktop.PluginIsolation.Contracts/PluginIpcRoutes.cs

@@ -0,0 +1,56 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public static class PluginIpcRoutes
+{
+    public static class Session
+    {
+        public const string Handshake = "session/handshake";
+        public const string Capabilities = "session/capabilities";
+        public const string Ready = "session/ready";
+    }
+
+    public static class Lifecycle
+    {
+        public const string Initialize = "lifecycle/initialize";
+        public const string Stop = "lifecycle/stop";
+        public const string RestartRequest = "lifecycle/restart-request";
+        public const string StateChanged = "lifecycle/state-changed";
+    }
+
+    public static class Settings
+    {
+        public const string GetSnapshot = "settings/get-snapshot";
+        public const string Write = "settings/write";
+        public const string Changed = "settings/changed";
+    }
+
+    public static class Appearance
+    {
+        public const string GetSnapshot = "appearance/get-snapshot";
+        public const string Changed = "appearance/changed";
+    }
+
+    public static class Ui
+    {
+        public const string Attach = "ui/attach";
+        public const string Detach = "ui/detach";
+        public const string Command = "ui/command";
+        public const string StateChanged = "ui/state-changed";
+    }
+
+    public static class Heartbeat
+    {
+        public const string Ping = "heartbeat/ping";
+        public const string Pong = "heartbeat/pong";
+    }
+
+    public static class Log
+    {
+        public const string Write = "log/write";
+    }
+
+    public static class Fault
+    {
+        public const string Report = "fault/report";
+    }
+}

LanMountainDesktop.PluginIsolation.Contracts/PluginIsolationJsonContext.cs

@@ -0,0 +1,39 @@
+using System.Text.Json.Serialization;
+
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+[JsonSourceGenerationOptions(
+    PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase,
+    PropertyNameCaseInsensitive = true,
+    DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull)]
+[JsonSerializable(typeof(PluginCapabilityDeclaration))]
+[JsonSerializable(typeof(List<PluginCapabilityDeclaration>))]
+[JsonSerializable(typeof(PluginSessionHandshakeRequest))]
+[JsonSerializable(typeof(PluginSessionHandshakeResponse))]
+[JsonSerializable(typeof(PluginReadyNotification))]
+[JsonSerializable(typeof(PluginInitializeRequest))]
+[JsonSerializable(typeof(PluginInitializeResponse))]
+[JsonSerializable(typeof(PluginStopRequest))]
+[JsonSerializable(typeof(PluginRestartRequest))]
+[JsonSerializable(typeof(PluginLifecycleStateChanged))]
+[JsonSerializable(typeof(PluginSettingsSnapshotRequest))]
+[JsonSerializable(typeof(PluginSettingsSnapshotResponse))]
+[JsonSerializable(typeof(PluginSettingsWriteRequest))]
+[JsonSerializable(typeof(PluginSettingsWriteResponse))]
+[JsonSerializable(typeof(PluginSettingsChangedNotification))]
+[JsonSerializable(typeof(PluginAppearanceSnapshotRequest))]
+[JsonSerializable(typeof(PluginAppearanceSnapshot))]
+[JsonSerializable(typeof(PluginAppearanceChangedNotification))]
+[JsonSerializable(typeof(PluginUiSurfaceDescriptor))]
+[JsonSerializable(typeof(List<PluginUiSurfaceDescriptor>))]
+[JsonSerializable(typeof(PluginUiAttachRequest))]
+[JsonSerializable(typeof(PluginUiAttachResponse))]
+[JsonSerializable(typeof(PluginUiDetachNotification))]
+[JsonSerializable(typeof(PluginUiCommandRequest))]
+[JsonSerializable(typeof(PluginUiCommandResponse))]
+[JsonSerializable(typeof(PluginUiStateChangedNotification))]
+[JsonSerializable(typeof(PluginHeartbeatPing))]
+[JsonSerializable(typeof(PluginHeartbeatPong))]
+[JsonSerializable(typeof(PluginLogEntry))]
+[JsonSerializable(typeof(PluginFaultReport))]
+public partial class PluginIsolationJsonContext : JsonSerializerContext;

LanMountainDesktop.PluginIsolation.Contracts/PluginIsolationProtocolVersion.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.PluginIsolation.Contracts;
+
+public static class PluginIsolationProtocolVersion
+{
+    public const string Current = "1.0";
+}