Files
LanMountainDesktop/.trae/specs/avalonia-12-migration/spec.md
lincube 93d6d93815 Migrate to Avalonia 12 and Plugin SDK v5
Upgrade project to the Avalonia 12 baseline and Plugin SDK v5: centralize Avalonia packages, remove legacy WebView.Avalonia usage (use NativeWebView/WebView2 EnvironmentRequested), and update Fluent/Material icon/package usages. Bump multiple package/project versions to 5.0.0 and Avalonia 12.0.1, update plugin template and README/docs to SDK v5, and add PLUGIN_SDK_V5_MIGRATION.md.

Also fix runtime/behavior bugs: make DataLocationResolver use a fixed bootstrap launcher data path and avoid recursive ResolveDataRoot; add legacy-state handling and extraction in OobeStateService; and update component settings tests to reflect migrated storage (DB/backup) and reset cache for test reloads. Various csproj, tests, and docs updated to reflect the migration and ensure build/test compatibility.
2026-04-29 10:16:25 +08:00

2.3 KiB

Avalonia 12 Full Stack Migration

Summary

LanMountainDesktop has moved its desktop stack to the Avalonia 12 baseline. The migration covers the main host, Launcher, Plugin SDK, plugin runtime loading policy, official WebView usage, ClassIsland Markdown, FluentAvalonia, FluentIcons, and Material-related dependencies.

Requirements

Requirement: Centralized Avalonia 12 dependency baseline

The solution SHALL use central package management for direct Avalonia-facing projects and keep the core UI dependency baseline on Avalonia 12.0.1.

Required package baseline:

  • Avalonia* 12.0.1
  • Avalonia.Controls.WebView 12.0.0
  • ClassIsland.Markdown.Avalonia 12.0.0
  • FluentAvaloniaUI 3.0.0-preview1
  • FluentIcons.Avalonia 2.1.325
  • Material.Avalonia 3.16.0
  • Material.Icons.Avalonia 3.0.2

Requirement: Official WebView

The host SHALL use Avalonia.Controls.NativeWebView for the browser widget and SHALL NOT reference WebView.Avalonia, AvaloniaWebView, or .UseDesktopWebView().

Windows WebView2 user data configuration SHALL be supplied through EnvironmentRequested using WindowsWebView2EnvironmentRequestedEventArgs.UserDataFolder.

Requirement: Plugin SDK v5

The Plugin SDK API baseline SHALL be 5.0.0. SDK v4 plugins are treated as incompatible until rebuilt.

The SDK SHALL keep the existing public UI extension shape, including SettingsPageBase and Avalonia Control based desktop components.

Requirement: Launcher data location stability

Launcher data location configuration SHALL be read from a fixed bootstrap Launcher data directory so resolving the selected data root cannot recursively require resolving itself.

Requirement: OOBE state compatibility

The Launcher SHALL read current OOBE state from the resolved Launcher/state directory and SHALL continue to migrate the legacy .launcher/state/first_run_completed marker.

Acceptance

  • dotnet build LanMountainDesktop.slnx -c Debug completes with 0 errors.
  • OobeStateServiceTests pass.
  • Full dotnet test LanMountainDesktop.slnx -c Debug no longer aborts from DataLocationResolver recursion.
  • Plugin template defaults to SDK package version 5.0.0 and manifest apiVersion 5.0.0.
  • Current developer documentation points to SDK v5 and Avalonia 12.