0.5.12

插件市场UI优化

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/AirAppMarketCacheService.cs

@@ -1,41 +0,0 @@
-namespace LanMountainDesktop.PluginMarketplace;
-
-internal sealed class AirAppMarketCacheService
-{
-    private readonly string _cacheDirectory;
-
-    public AirAppMarketCacheService(string dataDirectory)
-    {
-        ArgumentException.ThrowIfNullOrWhiteSpace(dataDirectory);
-        _cacheDirectory = Path.Combine(dataDirectory, "cache");
-    }
-
-    public string CacheFilePath => Path.Combine(_cacheDirectory, "index.json");
-
-    public void SaveIndexJson(string json)
-    {
-        ArgumentException.ThrowIfNullOrWhiteSpace(json);
-        Directory.CreateDirectory(_cacheDirectory);
-        File.WriteAllText(CacheFilePath, json);
-    }
-
-    public bool TryReadIndexJson(out string json)
-    {
-        try
-        {
-            if (!File.Exists(CacheFilePath))
-            {
-                json = string.Empty;
-                return false;
-            }
-
-            json = File.ReadAllText(CacheFilePath);
-            return !string.IsNullOrWhiteSpace(json);
-        }
-        catch
-        {
-            json = string.Empty;
-            return false;
-        }
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/AirAppMarketIndexService.cs

@@ -1,77 +0,0 @@
-using System.Net.Http.Headers;
-
-namespace LanMountainDesktop.PluginMarketplace;
-
-internal sealed class AirAppMarketIndexService : IDisposable
-{
-    private readonly AirAppMarketCacheService _cacheService;
-    private readonly HttpClient _httpClient;
-
-    public AirAppMarketIndexService(AirAppMarketCacheService cacheService)
-    {
-        _cacheService = cacheService;
-        _httpClient = new HttpClient
-        {
-            Timeout = TimeSpan.FromSeconds(20)
-        };
-        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-PluginMarketplace/1.0");
-        _httpClient.DefaultRequestHeaders.Accept.Add(
-            new MediaTypeWithQualityHeaderValue("application/json"));
-    }
-
-    public async Task<AirAppMarketLoadResult> LoadAsync(CancellationToken cancellationToken = default)
-    {
-        Exception? networkError = null;
-
-        try
-        {
-            using var response = await _httpClient.GetAsync(
-                AirAppMarketDefaults.DefaultIndexUrl,
-                cancellationToken);
-            var json = await response.Content.ReadAsStringAsync(cancellationToken);
-            response.EnsureSuccessStatusCode();
-
-            var document = AirAppMarketIndexDocument.Load(json, AirAppMarketDefaults.DefaultIndexUrl);
-            _cacheService.SaveIndexJson(json);
-            return new AirAppMarketLoadResult(true, document, AirAppMarketLoadSource.Network, null, null);
-        }
-        catch (OperationCanceledException)
-        {
-            throw;
-        }
-        catch (Exception ex)
-        {
-            networkError = ex;
-        }
-
-        if (_cacheService.TryReadIndexJson(out var cachedJson))
-        {
-            try
-            {
-                var cachedDocument = AirAppMarketIndexDocument.Load(cachedJson, _cacheService.CacheFilePath);
-                return new AirAppMarketLoadResult(
-                    true,
-                    cachedDocument,
-                    AirAppMarketLoadSource.Cache,
-                    networkError?.Message,
-                    null);
-            }
-            catch (Exception cacheEx)
-            {
-                return new AirAppMarketLoadResult(
-                    false,
-                    null,
-                    null,
-                    null,
-                    $"{networkError?.Message ?? "Unknown network error"} | Cached index invalid: {cacheEx.Message}");
-            }
-        }
-
-        return new AirAppMarketLoadResult(false, null, null, null, networkError?.Message ?? "Unknown network error");
-    }
-
-    public void Dispose()
-    {
-        _httpClient.Dispose();
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/AirAppMarketInstallService.cs

@@ -1,83 +0,0 @@
-using System.Security.Cryptography;
-using LanMountainDesktop.PluginSdk;
-
-namespace LanMountainDesktop.PluginMarketplace;
-
-internal sealed class AirAppMarketInstallService : IDisposable
-{
-    private readonly IPluginPackageManager _packageManager;
-    private readonly HttpClient _httpClient;
-    private readonly string _downloadsDirectory;
-
-    public AirAppMarketInstallService(IPluginPackageManager packageManager, string dataDirectory)
-    {
-        _packageManager = packageManager;
-        _downloadsDirectory = Path.Combine(dataDirectory, "downloads");
-        _httpClient = new HttpClient
-        {
-            Timeout = TimeSpan.FromMinutes(2)
-        };
-        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-PluginMarketplace/1.0");
-    }
-
-    public async Task<AirAppMarketInstallResult> InstallAsync(
-        AirAppMarketPluginEntry plugin,
-        CancellationToken cancellationToken = default)
-    {
-        ArgumentNullException.ThrowIfNull(plugin);
-
-        Directory.CreateDirectory(_downloadsDirectory);
-        var downloadPath = Path.Combine(
-            _downloadsDirectory,
-            $"{SanitizeFileName(plugin.Id)}-{SanitizeFileName(plugin.Version)}.laapp");
-
-        try
-        {
-            using var response = await _httpClient.GetAsync(
-                plugin.DownloadUrl,
-                HttpCompletionOption.ResponseHeadersRead,
-                cancellationToken);
-            response.EnsureSuccessStatusCode();
-
-            await using (var responseStream = await response.Content.ReadAsStreamAsync(cancellationToken))
-            await using (var destinationStream = File.Create(downloadPath))
-            {
-                await responseStream.CopyToAsync(destinationStream, cancellationToken);
-            }
-
-            await using var hashStream = File.OpenRead(downloadPath);
-            var hashBytes = await SHA256.HashDataAsync(hashStream, cancellationToken);
-            var actualHash = Convert.ToHexString(hashBytes).ToLowerInvariant();
-            if (!string.Equals(actualHash, plugin.Sha256, StringComparison.OrdinalIgnoreCase))
-            {
-                File.Delete(downloadPath);
-                return new AirAppMarketInstallResult(
-                    false,
-                    null,
-                    $"SHA-256 mismatch. Expected {plugin.Sha256}, actual {actualHash}.");
-            }
-
-            var installResult = _packageManager.InstallPackage(downloadPath);
-            return new AirAppMarketInstallResult(true, installResult, null);
-        }
-        catch (OperationCanceledException)
-        {
-            throw;
-        }
-        catch (Exception ex)
-        {
-            return new AirAppMarketInstallResult(false, null, ex.Message);
-        }
-    }
-
-    public void Dispose()
-    {
-        _httpClient.Dispose();
-    }
-
-    private static string SanitizeFileName(string value)
-    {
-        var invalidChars = Path.GetInvalidFileNameChars();
-        return new string(value.Select(ch => invalidChars.Contains(ch) ? '_' : ch).ToArray());
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/AirAppMarketModels.cs

@@ -1,299 +0,0 @@
-using System.Globalization;
-using System.Text.Json;
-using LanMountainDesktop.PluginSdk;
-
-namespace LanMountainDesktop.PluginMarketplace;
-
-internal static class AirAppMarketDefaults
-{
-    public const string DefaultIndexUrl =
-        "https://raw.githubusercontent.com/wwiinnddyy/LanMountainDesktop/main/airappmarket/index.json";
-}
-
-internal enum AirAppMarketLoadSource
-{
-    Network = 0,
-    Cache = 1
-}
-
-internal enum AirAppMarketInstallState
-{
-    NotInstalled = 0,
-    UpdateAvailable = 1,
-    Installed = 2
-}
-
-internal sealed record AirAppMarketLoadResult(
-    bool Success,
-    AirAppMarketIndexDocument? Document,
-    AirAppMarketLoadSource? Source,
-    string? WarningMessage,
-    string? ErrorMessage);
-
-internal sealed record AirAppMarketInstallResult(
-    bool Success,
-    PluginPackageInstallResult? InstallResult,
-    string? ErrorMessage);
-
-internal sealed class AirAppMarketIndexDocument
-{
-    private static readonly JsonSerializerOptions SerializerOptions = new()
-    {
-        PropertyNameCaseInsensitive = true,
-        ReadCommentHandling = JsonCommentHandling.Skip,
-        AllowTrailingCommas = true
-    };
-
-    public string SchemaVersion { get; init; } = string.Empty;
-
-    public string SourceId { get; init; } = string.Empty;
-
-    public string SourceName { get; init; } = string.Empty;
-
-    public DateTimeOffset GeneratedAt { get; init; }
-
-    public List<AirAppMarketPluginEntry> Plugins { get; init; } = [];
-
-    public static AirAppMarketIndexDocument Load(string json, string sourceName)
-    {
-        ArgumentException.ThrowIfNullOrWhiteSpace(json);
-        ArgumentException.ThrowIfNullOrWhiteSpace(sourceName);
-
-        var document = JsonSerializer.Deserialize<AirAppMarketIndexDocument>(
-            json.TrimStart('\uFEFF'),
-            SerializerOptions);
-
-        if (document is null)
-        {
-            throw new InvalidOperationException($"Failed to parse market index '{sourceName}'.");
-        }
-
-        return document.ValidateAndNormalize(sourceName);
-    }
-
-    private AirAppMarketIndexDocument ValidateAndNormalize(string sourceName)
-    {
-        var plugins = Plugins ?? [];
-        var normalizedPlugins = new List<AirAppMarketPluginEntry>(plugins.Count);
-        var seenIds = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
-
-        foreach (var plugin in plugins)
-        {
-            var normalizedPlugin = plugin.ValidateAndNormalize(sourceName);
-            if (!seenIds.Add(normalizedPlugin.Id))
-            {
-                throw new InvalidOperationException(
-                    $"Market index '{sourceName}' contains duplicate plugin id '{normalizedPlugin.Id}'.");
-            }
-
-            normalizedPlugins.Add(normalizedPlugin);
-        }
-
-        return new AirAppMarketIndexDocument
-        {
-            SchemaVersion = RequireValue(SchemaVersion, nameof(SchemaVersion), sourceName),
-            SourceId = RequireValue(SourceId, nameof(SourceId), sourceName),
-            SourceName = RequireValue(SourceName, nameof(SourceName), sourceName),
-            GeneratedAt = GeneratedAt == default
-                ? throw new InvalidOperationException($"Market index '{sourceName}' is missing a valid generatedAt timestamp.")
-                : GeneratedAt,
-            Plugins = normalizedPlugins
-                .OrderBy(plugin => plugin.Name, StringComparer.OrdinalIgnoreCase)
-                .ToList()
-        };
-    }
-
-    private static string RequireValue(string? value, string propertyName, string sourceName)
-    {
-        var normalized = NormalizeValue(value);
-        if (string.IsNullOrWhiteSpace(normalized))
-        {
-            throw new InvalidOperationException($"Market index '{sourceName}' is missing required property '{propertyName}'.");
-        }
-
-        return normalized;
-    }
-
-    internal static string? NormalizeValue(string? value)
-    {
-        return string.IsNullOrWhiteSpace(value) ? null : value.Trim();
-    }
-
-    internal static string NormalizeVersion(string? value, string propertyName, string sourceName)
-    {
-        var normalized = RequireValue(value, propertyName, sourceName);
-        if (!TryParseVersion(normalized, out _))
-        {
-            throw new InvalidOperationException(
-                $"Market index '{sourceName}' declares invalid version '{normalized}' for '{propertyName}'.");
-        }
-
-        return normalized;
-    }
-
-    internal static void EnsureUrl(string url, string propertyName, string sourceName)
-    {
-        if (!Uri.TryCreate(url, UriKind.Absolute, out var uri) ||
-            (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
-        {
-            throw new InvalidOperationException(
-                $"Market index '{sourceName}' declares invalid URL '{url}' for '{propertyName}'.");
-        }
-    }
-
-    internal static bool TryParseVersion(string? value, out Version? version)
-    {
-        version = null;
-        var normalized = NormalizeValue(value);
-        if (string.IsNullOrWhiteSpace(normalized))
-        {
-            return false;
-        }
-
-        if (normalized.StartsWith("v", StringComparison.OrdinalIgnoreCase))
-        {
-            normalized = normalized[1..];
-        }
-
-        var separatorIndex = normalized.IndexOfAny(['-', '+', ' ']);
-        if (separatorIndex > 0)
-        {
-            normalized = normalized[..separatorIndex];
-        }
-
-        if (!Version.TryParse(normalized, out var parsed))
-        {
-            return false;
-        }
-
-        version = new Version(
-            Math.Max(0, parsed.Major),
-            Math.Max(0, parsed.Minor),
-            Math.Max(0, parsed.Build));
-        return true;
-    }
-}
-
-internal sealed class AirAppMarketPluginEntry
-{
-    public string Id { get; init; } = string.Empty;
-
-    public string Name { get; init; } = string.Empty;
-
-    public string Description { get; init; } = string.Empty;
-
-    public string Author { get; init; } = string.Empty;
-
-    public string Version { get; init; } = string.Empty;
-
-    public string ApiVersion { get; init; } = string.Empty;
-
-    public string MinHostVersion { get; init; } = string.Empty;
-
-    public string DownloadUrl { get; init; } = string.Empty;
-
-    public string Sha256 { get; init; } = string.Empty;
-
-    public long PackageSizeBytes { get; init; }
-
-    public string IconUrl { get; init; } = string.Empty;
-
-    public string HomepageUrl { get; init; } = string.Empty;
-
-    public string RepositoryUrl { get; init; } = string.Empty;
-
-    public List<string> Tags { get; init; } = [];
-
-    public DateTimeOffset PublishedAt { get; init; }
-
-    public DateTimeOffset UpdatedAt { get; init; }
-
-    public string ReleaseNotes { get; init; } = string.Empty;
-
-    public AirAppMarketPluginEntry ValidateAndNormalize(string sourceName)
-    {
-        var normalizedTags = (Tags ?? [])
-            .Select(tag => AirAppMarketIndexDocument.NormalizeValue(tag))
-            .Where(tag => !string.IsNullOrWhiteSpace(tag))
-            .Select(tag => tag!)
-            .Distinct(StringComparer.OrdinalIgnoreCase)
-            .OrderBy(tag => tag, StringComparer.OrdinalIgnoreCase)
-            .ToList();
-
-        var normalizedSha = AirAppMarketIndexDocument.NormalizeValue(Sha256)?.ToLowerInvariant()
-            ?? throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing required property '{nameof(Sha256)}'.");
-
-        if (normalizedSha.Length != 64 || normalizedSha.Any(ch => !Uri.IsHexDigit(ch)))
-        {
-            throw new InvalidOperationException(
-                $"Market index '{sourceName}' declares invalid SHA-256 '{normalizedSha}' for plugin '{Id}'.");
-        }
-
-        var normalizedDownloadUrl = AirAppMarketIndexDocument.NormalizeValue(DownloadUrl)
-            ?? throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing required property '{nameof(DownloadUrl)}'.");
-        var normalizedIconUrl = AirAppMarketIndexDocument.NormalizeValue(IconUrl)
-            ?? throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing required property '{nameof(IconUrl)}'.");
-        var normalizedHomepageUrl = AirAppMarketIndexDocument.NormalizeValue(HomepageUrl)
-            ?? throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing required property '{nameof(HomepageUrl)}'.");
-        var normalizedRepositoryUrl = AirAppMarketIndexDocument.NormalizeValue(RepositoryUrl)
-            ?? throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing required property '{nameof(RepositoryUrl)}'.");
-
-        AirAppMarketIndexDocument.EnsureUrl(normalizedDownloadUrl, nameof(DownloadUrl), sourceName);
-        AirAppMarketIndexDocument.EnsureUrl(normalizedIconUrl, nameof(IconUrl), sourceName);
-        AirAppMarketIndexDocument.EnsureUrl(normalizedHomepageUrl, nameof(HomepageUrl), sourceName);
-        AirAppMarketIndexDocument.EnsureUrl(normalizedRepositoryUrl, nameof(RepositoryUrl), sourceName);
-
-        if (PackageSizeBytes <= 0)
-        {
-            throw new InvalidOperationException(
-                $"Market index '{sourceName}' declares invalid packageSizeBytes '{PackageSizeBytes}' for plugin '{Id}'.");
-        }
-
-        if (PublishedAt == default || UpdatedAt == default)
-        {
-            throw new InvalidOperationException(
-                $"Market index '{sourceName}' is missing valid publish timestamps for plugin '{Id}'.");
-        }
-
-        return new AirAppMarketPluginEntry
-        {
-            Id = AirAppMarketIndexDocument.NormalizeValue(Id)
-                ?? throw new InvalidOperationException($"Market index '{sourceName}' is missing plugin id."),
-            Name = AirAppMarketIndexDocument.NormalizeValue(Name)
-                ?? throw new InvalidOperationException($"Market index '{sourceName}' is missing plugin name."),
-            Description = AirAppMarketIndexDocument.NormalizeValue(Description)
-                ?? throw new InvalidOperationException($"Market index '{sourceName}' is missing plugin description."),
-            Author = AirAppMarketIndexDocument.NormalizeValue(Author)
-                ?? throw new InvalidOperationException($"Market index '{sourceName}' is missing plugin author."),
-            Version = AirAppMarketIndexDocument.NormalizeVersion(Version, nameof(Version), sourceName),
-            ApiVersion = AirAppMarketIndexDocument.NormalizeVersion(ApiVersion, nameof(ApiVersion), sourceName),
-            MinHostVersion = AirAppMarketIndexDocument.NormalizeVersion(MinHostVersion, nameof(MinHostVersion), sourceName),
-            DownloadUrl = normalizedDownloadUrl,
-            Sha256 = normalizedSha,
-            PackageSizeBytes = PackageSizeBytes,
-            IconUrl = normalizedIconUrl,
-            HomepageUrl = normalizedHomepageUrl,
-            RepositoryUrl = normalizedRepositoryUrl,
-            Tags = normalizedTags,
-            PublishedAt = PublishedAt,
-            UpdatedAt = UpdatedAt,
-            ReleaseNotes = AirAppMarketIndexDocument.NormalizeValue(ReleaseNotes)
-                ?? throw new InvalidOperationException($"Market index '{sourceName}' is missing release notes for plugin '{Id}'.")
-        };
-    }
-
-    public string GetVersionSummary()
-    {
-        return string.Format(
-            CultureInfo.InvariantCulture,
-            "v{0} | API {1} | Host >= {2}",
-            Version,
-            ApiVersion,
-            MinHostVersion);
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/LanMountainDesktop.PluginMarketplace.csproj

@@ -1,35 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-    <Version>1.0.0</Version>
-    <EnableDynamicLoading>true</EnableDynamicLoading>
-    <OutputPath>bin\$(Configuration)\$(TargetFramework)\content\</OutputPath>
-    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
-    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
-    <PluginPackageOutputDirectory>..\..\..\LanMountainDesktop\bin\$(Configuration)\$(TargetFramework)\Extensions\Plugins\</PluginPackageOutputDirectory>
-    <PluginPackagePath>$(PluginPackageOutputDirectory)$(AssemblyName).laapp</PluginPackagePath>
-    <PluginReleaseOutputDirectory>..\..\releases\</PluginReleaseOutputDirectory>
-    <PluginReleasePackagePath>$(PluginReleaseOutputDirectory)$(AssemblyName).$(Version).laapp</PluginReleasePackagePath>
-    <LegacyLoosePluginOutputDirectory>..\..\..\LanMountainDesktop\bin\$(Configuration)\$(TargetFramework)\Extensions\Plugins\PluginMarketplace\</LegacyLoosePluginOutputDirectory>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\..\LanMountainDesktop.PluginSdk\LanMountainDesktop.PluginSdk.csproj" Private="false" />
-    <None Include="plugin.json" CopyToOutputDirectory="PreserveNewest" />
-    <None Include="Localization\*.json" CopyToOutputDirectory="PreserveNewest" />
-  </ItemGroup>
-
-  <Target Name="CreateLaappPackage" AfterTargets="Build">
-    <MakeDir Directories="$(PluginPackageOutputDirectory)" />
-    <MakeDir Directories="$(PluginReleaseOutputDirectory)" />
-    <RemoveDir Directories="$(LegacyLoosePluginOutputDirectory)" />
-    <Delete Files="$(PluginPackagePath)" TreatErrorsAsWarnings="true" />
-    <Delete Files="$(PluginReleasePackagePath)" TreatErrorsAsWarnings="true" />
-    <ZipDirectory SourceDirectory="$(OutputPath)" DestinationFile="$(PluginPackagePath)" />
-    <Copy SourceFiles="$(PluginPackagePath)" DestinationFiles="$(PluginReleasePackagePath)" />
-  </Target>
-
-</Project>

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/Localization/en-US.json

@@ -1,37 +0,0 @@
-{
-  "market.page_title": "Plugin Marketplace",
-  "market.toolbar.search_placeholder": "Search plugins",
-  "market.toolbar.refresh": "Refresh",
-  "market.status.loading": "Loading the official plugin marketplace...",
-  "market.status.loaded_network_format": "Loaded {0} plugin(s) from the official source.",
-  "market.status.loaded_cache_format": "Official source unavailable. Loaded {0} plugin(s) from cache. Reason: {1}",
-  "market.status.load_failed_format": "Failed to load plugin marketplace: {0}",
-  "market.status.installing_format": "Downloading and staging plugin '{0}'...",
-  "market.status.install_success_format": "Plugin '{0}' has been staged. Restart the app to apply it.",
-  "market.status.install_failed_format": "Failed to install plugin: {0}",
-  "market.status.host_incompatible_format": "This host is too old. Version {0} or newer is required.",
-  "market.list.empty": "The plugin marketplace has not been loaded yet.",
-  "market.list.no_results": "No plugins match the current search.",
-  "market.card.subtitle_format": "{0} · v{1}",
-  "market.card.loaded": "Loaded",
-  "market.card.pending_restart": "Restart required",
-  "market.detail.placeholder": "Select a plugin from the left to inspect details.",
-  "market.detail.author": "Author",
-  "market.detail.version": "Version",
-  "market.detail.api_version": "API Version",
-  "market.detail.min_host_version": "Minimum Host Version",
-  "market.detail.installed_version": "Installed Version",
-  "market.detail.not_installed": "Not installed",
-  "market.detail.market_source": "Market Source",
-  "market.detail.homepage": "Homepage",
-  "market.detail.repository": "Repository",
-  "market.detail.release_notes": "Release Notes",
-  "market.detail.state.not_installed": "Not installed",
-  "market.detail.state.update_available": "Update available",
-  "market.detail.state.installed": "Installed",
-  "market.detail.unknown": "Unknown",
-  "market.button.install": "Install",
-  "market.button.update": "Update",
-  "market.button.installed": "Installed",
-  "market.button.installing": "Installing..."
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/Localization/zh-CN.json

@@ -1,37 +0,0 @@
-{
-  "market.page_title": "插件市场",
-  "market.toolbar.search_placeholder": "搜索插件",
-  "market.toolbar.refresh": "刷新",
-  "market.status.loading": "正在加载官方插件市场…",
-  "market.status.loaded_network_format": "已从官方源加载 {0} 个插件。",
-  "market.status.loaded_cache_format": "官方源不可用，已从缓存加载 {0} 个插件。原因：{1}",
-  "market.status.load_failed_format": "加载插件市场失败：{0}",
-  "market.status.installing_format": "正在下载并暂存插件“{0}”…",
-  "market.status.install_success_format": "插件“{0}”已暂存完成，重启应用后生效。",
-  "market.status.install_failed_format": "安装插件失败：{0}",
-  "market.status.host_incompatible_format": "当前宿主版本过低，至少需要 {0}。",
-  "market.list.empty": "插件市场尚未加载。",
-  "market.list.no_results": "没有匹配的插件。",
-  "market.card.subtitle_format": "{0} · v{1}",
-  "market.card.loaded": "已加载",
-  "market.card.pending_restart": "需重启",
-  "market.detail.placeholder": "从左侧选择一个插件以查看详情。",
-  "market.detail.author": "作者",
-  "market.detail.version": "版本",
-  "market.detail.api_version": "API 版本",
-  "market.detail.min_host_version": "最低宿主版本",
-  "market.detail.installed_version": "当前已安装版本",
-  "market.detail.not_installed": "未安装",
-  "market.detail.market_source": "市场源",
-  "market.detail.homepage": "主页",
-  "market.detail.repository": "仓库",
-  "market.detail.release_notes": "发布说明",
-  "market.detail.state.not_installed": "未安装",
-  "market.detail.state.update_available": "可更新",
-  "market.detail.state.installed": "已安装",
-  "market.detail.unknown": "未知",
-  "market.button.install": "安装",
-  "market.button.update": "更新",
-  "market.button.installed": "已安装",
-  "market.button.installing": "安装中…"
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/PluginMarketplacePlugin.cs

@@ -1,47 +0,0 @@
-using LanMountainDesktop.PluginSdk;
-
-namespace LanMountainDesktop.PluginMarketplace;
-
-[PluginEntrance]
-public sealed class PluginMarketplacePlugin : PluginBase, IDisposable
-{
-    private AirAppMarketIndexService? _indexService;
-    private AirAppMarketInstallService? _installService;
-
-    public override void Initialize(IPluginContext context)
-    {
-        Directory.CreateDirectory(context.DataDirectory);
-
-        var localizer = PluginLocalizer.Create(context);
-        var packageManager = context.GetService<IPluginPackageManager>()
-            ?? throw new InvalidOperationException(
-                "The host does not expose IPluginPackageManager. LanMountainDesktop.PluginMarketplace requires a newer host build.");
-
-        var cacheService = new AirAppMarketCacheService(context.DataDirectory);
-        _indexService = new AirAppMarketIndexService(cacheService);
-        _installService = new AirAppMarketInstallService(packageManager, context.DataDirectory);
-
-        context.RegisterService(cacheService);
-        context.RegisterService(_indexService);
-        context.RegisterService(_installService);
-
-        context.RegisterSettingsPage(new PluginSettingsPageRegistration(
-            "marketplace",
-            localizer.GetString("market.page_title", "插件市场"),
-            () => new PluginMarketplaceSettingsView(
-                context,
-                localizer,
-                packageManager,
-                _indexService,
-                _installService),
-            sortOrder: -100));
-    }
-
-    public void Dispose()
-    {
-        _installService?.Dispose();
-        _indexService?.Dispose();
-        _installService = null;
-        _indexService = null;
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/PluginMarketplaceSettingsView.cs

@@ -1,727 +0,0 @@
-using System.Globalization;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Interactivity;
-using Avalonia.Layout;
-using Avalonia.Media;
-using LanMountainDesktop.PluginSdk;
-
-namespace LanMountainDesktop.PluginMarketplace;
-
-internal sealed class PluginMarketplaceSettingsView : UserControl
-{
-    private static readonly IBrush SurfaceBrush = new SolidColorBrush(Color.Parse("#14000000"));
-    private static readonly IBrush SelectedSurfaceBrush = new SolidColorBrush(Color.Parse("#1F0EA5E9"));
-    private static readonly IBrush SuccessBrush = new SolidColorBrush(Color.Parse("#FF0F766E"));
-    private static readonly IBrush WarningBrush = new SolidColorBrush(Color.Parse("#FF9A6700"));
-    private static readonly IBrush ErrorBrush = new SolidColorBrush(Color.Parse("#FFC42B1C"));
-
-    private readonly PluginLocalizer _localizer;
-    private readonly IPluginPackageManager _packageManager;
-    private readonly AirAppMarketIndexService _indexService;
-    private readonly AirAppMarketInstallService _installService;
-    private readonly Version? _hostVersion;
-
-    private readonly TextBox _searchTextBox;
-    private readonly Button _refreshButton;
-    private readonly TextBlock _statusTextBlock;
-    private readonly StackPanel _pluginListHost;
-    private readonly Border _detailBorder;
-
-    private AirAppMarketIndexDocument? _document;
-    private AirAppMarketPluginEntry? _selectedPlugin;
-    private Dictionary<string, InstalledPluginInfo> _installedPlugins = new(StringComparer.OrdinalIgnoreCase);
-    private bool _isRefreshing;
-    private bool _isInstalling;
-    private bool _hasLoadedOnce;
-
-    public PluginMarketplaceSettingsView(
-        IPluginContext context,
-        PluginLocalizer localizer,
-        IPluginPackageManager packageManager,
-        AirAppMarketIndexService indexService,
-        AirAppMarketInstallService installService)
-    {
-        _localizer = localizer;
-        _packageManager = packageManager;
-        _indexService = indexService;
-        _installService = installService;
-        _hostVersion = context.TryGetProperty<string>(PluginHostPropertyKeys.HostVersion, out var hostVersionText) &&
-                       AirAppMarketIndexDocument.TryParseVersion(hostVersionText, out var parsedHostVersion)
-            ? parsedHostVersion
-            : null;
-
-        _searchTextBox = new TextBox
-        {
-            MinWidth = 240,
-            Watermark = T("market.toolbar.search_placeholder", "搜索插件")
-        };
-        _searchTextBox.PropertyChanged += (_, e) =>
-        {
-            if (e.Property == TextBox.TextProperty)
-            {
-                RebuildSurface();
-            }
-        };
-
-        _refreshButton = new Button
-        {
-            Content = T("market.toolbar.refresh", "刷新"),
-            HorizontalAlignment = HorizontalAlignment.Left
-        };
-        _refreshButton.Click += OnRefreshClick;
-
-        _statusTextBlock = new TextBlock
-        {
-            Text = T("market.status.loading", "正在加载官方插件市场…"),
-            TextWrapping = TextWrapping.Wrap,
-            Foreground = WarningBrush
-        };
-
-        _pluginListHost = new StackPanel
-        {
-            Spacing = 10
-        };
-
-        _detailBorder = CreatePanelShell();
-
-        Content = BuildLayout();
-        AttachedToVisualTree += async (_, _) =>
-        {
-            if (_hasLoadedOnce)
-            {
-                return;
-            }
-
-            _hasLoadedOnce = true;
-            await RefreshAsync();
-        };
-    }
-
-    private Control BuildLayout()
-    {
-        var root = new Grid
-        {
-            RowDefinitions = new RowDefinitions("Auto,*"),
-            RowSpacing = 16
-        };
-
-        var toolbar = new Grid
-        {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 12
-        };
-
-        toolbar.Children.Add(new StackPanel
-        {
-            Spacing = 8,
-            Children =
-            {
-                new StackPanel
-                {
-                    Orientation = Orientation.Horizontal,
-                    Spacing = 10,
-                    Children =
-                    {
-                        _searchTextBox,
-                        _refreshButton
-                    }
-                },
-                _statusTextBlock
-            }
-        });
-
-        var contentGrid = new Grid
-        {
-            ColumnDefinitions = new ColumnDefinitions("360,*"),
-            ColumnSpacing = 16
-        };
-
-        var listShell = CreatePanelShell();
-        listShell.Child = new ScrollViewer
-        {
-            Content = _pluginListHost
-        };
-
-        contentGrid.Children.Add(listShell);
-        contentGrid.Children.Add(_detailBorder);
-        Grid.SetColumn(_detailBorder, 1);
-
-        root.Children.Add(toolbar);
-        root.Children.Add(contentGrid);
-        Grid.SetRow(contentGrid, 1);
-
-        return root;
-    }
-
-    private async void OnRefreshClick(object? sender, RoutedEventArgs e)
-    {
-        await RefreshAsync();
-    }
-
-    private async Task RefreshAsync()
-    {
-        if (_isRefreshing)
-        {
-            return;
-        }
-
-        _isRefreshing = true;
-        _refreshButton.IsEnabled = false;
-        SetStatus(T("market.status.loading", "正在加载官方插件市场…"), WarningBrush);
-
-        try
-        {
-            _installedPlugins = _packageManager
-                .GetInstalledPlugins()
-                .ToDictionary(plugin => plugin.Manifest.Id, StringComparer.OrdinalIgnoreCase);
-
-            var result = await _indexService.LoadAsync();
-            if (!result.Success || result.Document is null)
-            {
-                _document = null;
-                _selectedPlugin = null;
-                SetStatus(
-                    F("market.status.load_failed_format", "加载插件市场失败：{0}", result.ErrorMessage ?? T("market.detail.unknown", "未知错误")),
-                    ErrorBrush);
-                RebuildSurface();
-                return;
-            }
-
-            _document = result.Document;
-            _selectedPlugin = ResolveSelectedPlugin(_selectedPlugin?.Id, result.Document.Plugins);
-
-            var statusMessage = result.Source == AirAppMarketLoadSource.Cache
-                ? F(
-                    "market.status.loaded_cache_format",
-                    "官方源不可用，已从缓存加载 {0} 个插件。原因：{1}",
-                    result.Document.Plugins.Count,
-                    result.WarningMessage ?? T("market.detail.unknown", "未知错误"))
-                : F(
-                    "market.status.loaded_network_format",
-                    "已从官方源加载 {0} 个插件。",
-                    result.Document.Plugins.Count);
-
-            SetStatus(statusMessage, result.Source == AirAppMarketLoadSource.Cache ? WarningBrush : SuccessBrush);
-            RebuildSurface();
-        }
-        finally
-        {
-            _isRefreshing = false;
-            _refreshButton.IsEnabled = true;
-        }
-    }
-
-    private void RebuildSurface()
-    {
-        var filteredPlugins = GetFilteredPlugins();
-        if (filteredPlugins.Count > 0)
-        {
-            _selectedPlugin = ResolveSelectedPlugin(_selectedPlugin?.Id, filteredPlugins);
-        }
-        else
-        {
-            _selectedPlugin = null;
-        }
-
-        BuildPluginList(filteredPlugins);
-        BuildDetailPanel();
-    }
-
-    private List<AirAppMarketPluginEntry> GetFilteredPlugins()
-    {
-        if (_document is null)
-        {
-            return [];
-        }
-
-        var query = (_searchTextBox.Text ?? string.Empty).Trim();
-        var source = _document.Plugins;
-        if (string.IsNullOrWhiteSpace(query))
-        {
-            return source.ToList();
-        }
-
-        return source
-            .Where(plugin =>
-                plugin.Name.Contains(query, StringComparison.OrdinalIgnoreCase) ||
-                plugin.Description.Contains(query, StringComparison.OrdinalIgnoreCase) ||
-                plugin.Author.Contains(query, StringComparison.OrdinalIgnoreCase) ||
-                plugin.Id.Contains(query, StringComparison.OrdinalIgnoreCase) ||
-                plugin.Tags.Any(tag => tag.Contains(query, StringComparison.OrdinalIgnoreCase)))
-            .ToList();
-    }
-
-    private void BuildPluginList(IReadOnlyList<AirAppMarketPluginEntry> plugins)
-    {
-        _pluginListHost.Children.Clear();
-
-        if (_document is null)
-        {
-            _pluginListHost.Children.Add(CreateEmptyState(T("market.list.empty", "插件市场尚未加载。")));
-            return;
-        }
-
-        if (plugins.Count == 0)
-        {
-            _pluginListHost.Children.Add(CreateEmptyState(T("market.list.no_results", "没有匹配的插件。")));
-            return;
-        }
-
-        foreach (var plugin in plugins)
-        {
-            _pluginListHost.Children.Add(CreatePluginCard(plugin));
-        }
-    }
-
-    private Control CreatePluginCard(AirAppMarketPluginEntry plugin)
-    {
-        var installState = ResolveInstallState(plugin, out var installedPlugin);
-        var isSelected = string.Equals(_selectedPlugin?.Id, plugin.Id, StringComparison.OrdinalIgnoreCase);
-
-        var button = new Button
-        {
-            HorizontalContentAlignment = HorizontalAlignment.Stretch,
-            Padding = new Thickness(0),
-            Background = Brushes.Transparent,
-            BorderThickness = new Thickness(0),
-            Content = new Border
-            {
-                Background = isSelected ? SelectedSurfaceBrush : SurfaceBrush,
-                CornerRadius = new CornerRadius(16),
-                Padding = new Thickness(14),
-                Child = new StackPanel
-                {
-                    Spacing = 10,
-                    Children =
-                    {
-                        new Grid
-                        {
-                            ColumnDefinitions = new ColumnDefinitions("Auto,*"),
-                            ColumnSpacing = 12,
-                            Children =
-                            {
-                                CreateMonogramIcon(plugin.Name, 42),
-                                new StackPanel
-                                {
-                                    Spacing = 4,
-                                    Children =
-                                    {
-                                        new TextBlock
-                                        {
-                                            Text = plugin.Name,
-                                            FontSize = 16,
-                                            FontWeight = FontWeight.SemiBold,
-                                            TextWrapping = TextWrapping.Wrap
-                                        },
-                                        new TextBlock
-                                        {
-                                            Text = F("market.card.subtitle_format", "{0} · v{1}", plugin.Author, plugin.Version),
-                                            Foreground = Brushes.Gray,
-                                            TextWrapping = TextWrapping.Wrap
-                                        }
-                                    }
-                                }
-                            }
-                        },
-                        new TextBlock
-                        {
-                            Text = plugin.Description,
-                            TextWrapping = TextWrapping.Wrap,
-                            MaxHeight = 56
-                        },
-                        new StackPanel
-                        {
-                            Orientation = Orientation.Horizontal,
-                            Spacing = 8,
-                            Children =
-                            {
-                                CreateStateChip(T(StateKey(installState), StateFallback(installState))),
-                                CreateStateChip(installedPlugin?.IsLoaded == true
-                                    ? T("market.card.loaded", "已加载")
-                                    : T("market.card.pending_restart", "需重启")),
-                                new TextBlock
-                                {
-                                    Text = string.Join("  ", plugin.Tags.Take(3)),
-                                    VerticalAlignment = VerticalAlignment.Center,
-                                    Foreground = Brushes.Gray
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        };
-
-        button.Click += (_, _) =>
-        {
-            _selectedPlugin = plugin;
-            RebuildSurface();
-        };
-
-        return button;
-    }
-
-    private void BuildDetailPanel()
-    {
-        if (_selectedPlugin is null)
-        {
-            _detailBorder.Child = CreateEmptyState(T("market.detail.placeholder", "从左侧选择一个插件以查看详情。"));
-            return;
-        }
-
-        var plugin = _selectedPlugin;
-        var installState = ResolveInstallState(plugin, out var installedPlugin);
-        var isCompatible = IsCompatibleWithHost(plugin);
-        var installButton = new Button
-        {
-            Content = _isInstalling
-                ? T("market.button.installing", "安装中…")
-                : T(ButtonKey(installState), ButtonFallback(installState)),
-            IsEnabled = !_isInstalling && isCompatible && installState != AirAppMarketInstallState.Installed,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            MinWidth = 120
-        };
-        installButton.Click += async (_, _) => await InstallSelectedPluginAsync(plugin);
-
-        var detailPanel = new StackPanel
-        {
-            Spacing = 14,
-            Children =
-            {
-                new Grid
-                {
-                    ColumnDefinitions = new ColumnDefinitions("Auto,*"),
-                    ColumnSpacing = 14,
-                    Children =
-                    {
-                        CreateMonogramIcon(plugin.Name, 64),
-                        new StackPanel
-                        {
-                            Spacing = 4,
-                            Children =
-                            {
-                                new TextBlock
-                                {
-                                    Text = plugin.Name,
-                                    FontSize = 24,
-                                    FontWeight = FontWeight.SemiBold,
-                                    TextWrapping = TextWrapping.Wrap
-                                },
-                                new TextBlock
-                                {
-                                    Text = plugin.Description,
-                                    TextWrapping = TextWrapping.Wrap
-                                }
-                            }
-                        }
-                    }
-                },
-                new StackPanel
-                {
-                    Orientation = Orientation.Horizontal,
-                    Spacing = 8,
-                    Children =
-                    {
-                        CreateStateChip(T(StateKey(installState), StateFallback(installState))),
-                        CreateStateChip(plugin.GetVersionSummary()),
-                        CreateStateChip(string.Join(", ", plugin.Tags))
-                    }
-                },
-                installButton,
-                CreateInfoRow(T("market.detail.author", "作者"), plugin.Author),
-                CreateInfoRow(T("market.detail.version", "版本"), plugin.Version),
-                CreateInfoRow(T("market.detail.api_version", "API 版本"), plugin.ApiVersion),
-                CreateInfoRow(T("market.detail.min_host_version", "最低宿主版本"), plugin.MinHostVersion),
-                CreateInfoRow(T("market.detail.installed_version", "当前已安装版本"), installedPlugin?.Manifest.Version ?? T("market.detail.not_installed", "未安装")),
-                CreateInfoRow(T("market.detail.market_source", "市场源"), AirAppMarketDefaults.DefaultIndexUrl),
-                CreateInfoRow(T("market.detail.homepage", "主页"), plugin.HomepageUrl),
-                CreateInfoRow(T("market.detail.repository", "仓库"), plugin.RepositoryUrl),
-                new TextBlock
-                {
-                    Text = T("market.detail.release_notes", "发布说明"),
-                    FontSize = 18,
-                    FontWeight = FontWeight.SemiBold
-                },
-                new Border
-                {
-                    Background = SurfaceBrush,
-                    CornerRadius = new CornerRadius(16),
-                    Padding = new Thickness(14),
-                    Child = new TextBlock
-                    {
-                        Text = plugin.ReleaseNotes,
-                        TextWrapping = TextWrapping.Wrap
-                    }
-                }
-            }
-        };
-
-        if (!isCompatible)
-        {
-            detailPanel.Children.Insert(
-                3,
-                new TextBlock
-                {
-                    Text = F(
-                        "market.status.host_incompatible_format",
-                        "当前宿主版本过低，至少需要 {0}。",
-                        plugin.MinHostVersion),
-                    Foreground = ErrorBrush,
-                    TextWrapping = TextWrapping.Wrap
-                });
-        }
-
-        _detailBorder.Child = new ScrollViewer
-        {
-            Content = detailPanel
-        };
-    }
-
-    private async Task InstallSelectedPluginAsync(AirAppMarketPluginEntry plugin)
-    {
-        if (_isInstalling)
-        {
-            return;
-        }
-
-        _isInstalling = true;
-        BuildDetailPanel();
-        SetStatus(
-            F("market.status.installing_format", "正在下载并暂存插件“{0}”…", plugin.Name),
-            WarningBrush);
-
-        try
-        {
-            var result = await _installService.InstallAsync(plugin);
-            if (!result.Success || result.InstallResult is null)
-            {
-                SetStatus(
-                    F(
-                        "market.status.install_failed_format",
-                        "安装插件失败：{0}",
-                        result.ErrorMessage ?? T("market.detail.unknown", "未知错误")),
-                    ErrorBrush);
-                return;
-            }
-
-            _installedPlugins = _packageManager
-                .GetInstalledPlugins()
-                .ToDictionary(item => item.Manifest.Id, StringComparer.OrdinalIgnoreCase);
-            SetStatus(
-                F(
-                    "market.status.install_success_format",
-                    "插件“{0}”已暂存完成，重启应用后生效。",
-                    result.InstallResult.Manifest.Name),
-                SuccessBrush);
-            RebuildSurface();
-        }
-        finally
-        {
-            _isInstalling = false;
-            BuildDetailPanel();
-        }
-    }
-
-    private AirAppMarketPluginEntry? ResolveSelectedPlugin(
-        string? selectedPluginId,
-        IReadOnlyList<AirAppMarketPluginEntry> plugins)
-    {
-        if (plugins.Count == 0)
-        {
-            return null;
-        }
-
-        if (!string.IsNullOrWhiteSpace(selectedPluginId))
-        {
-            var existing = plugins.FirstOrDefault(plugin =>
-                string.Equals(plugin.Id, selectedPluginId, StringComparison.OrdinalIgnoreCase));
-            if (existing is not null)
-            {
-                return existing;
-            }
-        }
-
-        return plugins[0];
-    }
-
-    private AirAppMarketInstallState ResolveInstallState(
-        AirAppMarketPluginEntry plugin,
-        out InstalledPluginInfo? installedPlugin)
-    {
-        if (!_installedPlugins.TryGetValue(plugin.Id, out installedPlugin))
-        {
-            return AirAppMarketInstallState.NotInstalled;
-        }
-
-        return CompareVersions(plugin.Version, installedPlugin.Manifest.Version) > 0
-            ? AirAppMarketInstallState.UpdateAvailable
-            : AirAppMarketInstallState.Installed;
-    }
-
-    private bool IsCompatibleWithHost(AirAppMarketPluginEntry plugin)
-    {
-        if (_hostVersion is null ||
-            !AirAppMarketIndexDocument.TryParseVersion(plugin.MinHostVersion, out var minHostVersion) ||
-            minHostVersion is null)
-        {
-            return true;
-        }
-
-        return _hostVersion >= minHostVersion;
-    }
-
-    private void SetStatus(string message, IBrush foreground)
-    {
-        _statusTextBlock.Text = message;
-        _statusTextBlock.Foreground = foreground;
-    }
-
-    private static int CompareVersions(string? left, string? right)
-    {
-        if (!AirAppMarketIndexDocument.TryParseVersion(left, out var leftVersion))
-        {
-            leftVersion = new Version(0, 0, 0);
-        }
-
-        if (!AirAppMarketIndexDocument.TryParseVersion(right, out var rightVersion))
-        {
-            rightVersion = new Version(0, 0, 0);
-        }
-
-        return (leftVersion ?? new Version(0, 0, 0)).CompareTo(rightVersion ?? new Version(0, 0, 0));
-    }
-
-    private Border CreatePanelShell()
-    {
-        return new Border
-        {
-            Background = SurfaceBrush,
-            CornerRadius = new CornerRadius(18),
-            Padding = new Thickness(16)
-        };
-    }
-
-    private Control CreateEmptyState(string text)
-    {
-        return new Border
-        {
-            Background = SurfaceBrush,
-            CornerRadius = new CornerRadius(16),
-            Padding = new Thickness(18),
-            Child = new TextBlock
-            {
-                Text = text,
-                TextWrapping = TextWrapping.Wrap
-            }
-        };
-    }
-
-    private Border CreateMonogramIcon(string text, double size)
-    {
-        var glyph = string.IsNullOrWhiteSpace(text) ? "?" : text.Trim()[0].ToString().ToUpperInvariant();
-        return new Border
-        {
-            Width = size,
-            Height = size,
-            CornerRadius = new CornerRadius(size / 2),
-            Background = new SolidColorBrush(Color.Parse("#FF0EA5E9")),
-            Child = new TextBlock
-            {
-                Text = glyph,
-                FontSize = Math.Max(16, size * 0.36),
-                FontWeight = FontWeight.Bold,
-                HorizontalAlignment = HorizontalAlignment.Center,
-                VerticalAlignment = VerticalAlignment.Center,
-                TextAlignment = TextAlignment.Center
-            }
-        };
-    }
-
-    private Border CreateStateChip(string text)
-    {
-        return new Border
-        {
-            Background = new SolidColorBrush(Color.Parse("#22000000")),
-            CornerRadius = new CornerRadius(999),
-            Padding = new Thickness(10, 4),
-            Child = new TextBlock
-            {
-                Text = text,
-                FontSize = 12
-            }
-        };
-    }
-
-    private Control CreateInfoRow(string label, string value)
-    {
-        return new StackPanel
-        {
-            Spacing = 4,
-            Children =
-            {
-                new TextBlock
-                {
-                    Text = label,
-                    FontSize = 12,
-                    Foreground = Brushes.Gray
-                },
-                new TextBlock
-                {
-                    Text = string.IsNullOrWhiteSpace(value) ? T("market.detail.unknown", "未知") : value,
-                    TextWrapping = TextWrapping.Wrap
-                }
-            }
-        };
-    }
-
-    private string T(string key, string fallback)
-    {
-        return _localizer.GetString(key, fallback);
-    }
-
-    private string F(string key, string fallback, params object[] args)
-    {
-        return string.Format(CultureInfo.CurrentCulture, T(key, fallback), args);
-    }
-
-    private static string StateKey(AirAppMarketInstallState state)
-    {
-        return state switch
-        {
-            AirAppMarketInstallState.UpdateAvailable => "market.detail.state.update_available",
-            AirAppMarketInstallState.Installed => "market.detail.state.installed",
-            _ => "market.detail.state.not_installed"
-        };
-    }
-
-    private static string StateFallback(AirAppMarketInstallState state)
-    {
-        return state switch
-        {
-            AirAppMarketInstallState.UpdateAvailable => "可更新",
-            AirAppMarketInstallState.Installed => "已安装",
-            _ => "未安装"
-        };
-    }
-
-    private static string ButtonKey(AirAppMarketInstallState state)
-    {
-        return state switch
-        {
-            AirAppMarketInstallState.UpdateAvailable => "market.button.update",
-            AirAppMarketInstallState.Installed => "market.button.installed",
-            _ => "market.button.install"
-        };
-    }
-
-    private static string ButtonFallback(AirAppMarketInstallState state)
-    {
-        return state switch
-        {
-            AirAppMarketInstallState.UpdateAvailable => "更新",
-            AirAppMarketInstallState.Installed => "已安装",
-            _ => "安装"
-        };
-    }
-}

LanAirApp/plugins/LanMountainDesktop.PluginMarketplace/plugin.json

@@ -1,9 +0,0 @@
-{
-  "id": "LanMountainDesktop.PluginMarketplace",
-  "name": "LanMountain Plugin Marketplace",
-  "description": "Official plugin marketplace for browsing and installing LanMountainDesktop plugins.",
-  "author": "LanMountainDesktop",
-  "version": "1.0.0",
-  "apiVersion": "1.0.0",
-  "entranceAssembly": "LanMountainDesktop.PluginMarketplace.dll"
-}

LanMountainDesktop/App.axaml

@@ -16,23 +16,6 @@
         <local:ViewLocator/>
     </Application.DataTemplates>
 
-    <TrayIcon.Icons>
-        <TrayIcons>
-            <TrayIcon Icon="/Assets/avalonia-logo.ico"
-                      ToolTipText="LanMountainDesktop">
-                <TrayIcon.Menu>
-                    <NativeMenu>
-                        <NativeMenuItem Header="设置" Click="OnTraySettingsClick" />
-                        <NativeMenuItemSeparator />
-                        <NativeMenuItem Header="重启应用" Click="OnTrayRestartClick" />
-                        <NativeMenuItemSeparator />
-                        <NativeMenuItem Header="退出应用" Click="OnTrayExitClick" />
-                    </NativeMenu>
-                </TrayIcon.Menu>
-            </TrayIcon>
-        </TrayIcons>
-    </TrayIcon.Icons>
-  
     <Application.Styles>
         <sty:FluentAvaloniaTheme />
         <mi:MaterialIconStyles />

LanMountainDesktop/App.axaml.cs

@@ -1,11 +1,12 @@
-using Avalonia;
+using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Data.Core;
 using Avalonia.Data.Core.Plugins;
 using System;
-using System.Diagnostics;
 using System.Linq;
 using Avalonia.Markup.Xaml;
+using Avalonia.Platform;
 using Avalonia.Threading;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.ViewModels;
@@ -16,13 +17,18 @@ namespace LanMountainDesktop;
 
 public partial class App : Application
 {
+    private readonly AppSettingsService _appSettingsService = new();
+    private readonly LocalizationService _localizationService = new();
+
     private SettingsWindow? _traySettingsWindow;
+    private TrayIcons? _trayIcons;
     private PluginRuntimeService? _pluginRuntimeService;
 
     public PluginRuntimeService? PluginRuntimeService => _pluginRuntimeService;
 
     public override void Initialize()
     {
+        AppLogger.Info("App", "Initializing application resources.");
         ConfigureWebViewUserDataFolder();
         AvaloniaWebViewBuilder.Initialize(default);
         AvaloniaXamlLoader.Load(this);
@@ -30,19 +36,29 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
+        AppLogger.Info("App", "Framework initialization completed.");
         LinuxDesktopEntryInstaller.EnsureInstalled();
         InitializePluginRuntime();
+        AppSettingsService.SettingsSaved += OnAppSettingsSaved;
+        InitializeTrayIcon();
 
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
-            // Avoid duplicate validations from both Avalonia and the CommunityToolkit. 
+            // Avoid duplicate validations from both Avalonia and the CommunityToolkit.
             // More info: https://docs.avaloniaui.net/docs/guides/development-guides/data-validation#manage-validationplugins
             DisableAvaloniaDataAnnotationValidation();
             desktop.ShutdownMode = Avalonia.Controls.ShutdownMode.OnExplicitShutdown;
+            desktop.Exit += (_, _) =>
+            {
+                AppLogger.Info("App", "Desktop lifetime exit triggered.");
+                AppSettingsService.SettingsSaved -= OnAppSettingsSaved;
+                DisposeTrayIcon();
+            };
             desktop.MainWindow = new MainWindow
             {
                 DataContext = new MainWindowViewModel(),
             };
+            AppLogger.Info("App", $"Main window created. LogFile={AppLogger.LogFilePath}");
         }
 
         base.OnFrameworkInitializationCompleted();
@@ -50,6 +66,8 @@ public partial class App : Application
 
     private void OnTrayExitClick(object? sender, EventArgs e)
     {
+        DisposeTrayIcon();
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             desktop.Shutdown();
@@ -89,7 +107,7 @@ public partial class App : Application
             }
             catch (Exception ex)
             {
-                Debug.WriteLine($"[TraySettings] Failed to open settings window: {ex}");
+                AppLogger.Warn("TraySettings", "Failed to open settings window.", ex);
             }
         }, DispatcherPriority.Normal);
     }
@@ -99,6 +117,17 @@ public partial class App : Application
         AppRestartService.TryRestartApplication();
     }
 
+    private void OnAppSettingsSaved(string _)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            if (_trayIcons is not null)
+            {
+                InitializeTrayIcon();
+            }
+        }, DispatcherPriority.Background);
+    }
+
     private void DisableAvaloniaDataAnnotationValidation()
     {
         // Get an array of plugins to remove
@@ -133,9 +162,10 @@ public partial class App : Application
                 userDataFolder,
                 EnvironmentVariableTarget.Process);
         }
-        catch
+        catch (Exception ex)
         {
             // Keep startup resilient if user profile folders are unavailable.
+            AppLogger.Warn("WebView2", "Failed to configure WebView2 user data folder.", ex);
         }
     }
 
@@ -149,7 +179,77 @@ public partial class App : Application
         }
         catch (Exception ex)
         {
-            Debug.WriteLine($"[PluginRuntime] Failed to initialize plugin runtime: {ex}");
+            AppLogger.Warn("PluginRuntime", "Failed to initialize plugin runtime.", ex);
         }
     }
+
+    private void InitializeTrayIcon()
+    {
+        try
+        {
+            DisposeTrayIcon();
+
+            using var iconStream = AssetLoader.Open(new Uri("avares://LanMountainDesktop/Assets/avalonia-logo.ico"));
+            var trayIcon = new TrayIcon
+            {
+                Icon = new WindowIcon(iconStream),
+                ToolTipText = L("tray.tooltip", "LanMountainDesktop"),
+                Menu = BuildTrayMenu(),
+                IsVisible = true
+            };
+
+            _trayIcons = [trayIcon];
+            TrayIcon.SetIcons(this, _trayIcons);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("TrayIcon", "Failed to initialize tray icon.", ex);
+        }
+    }
+
+    private NativeMenu BuildTrayMenu()
+    {
+        var menu = new NativeMenu();
+
+        var settingsItem = new NativeMenuItem(L("tray.menu.settings", "设置"));
+        settingsItem.Click += OnTraySettingsClick;
+        menu.Items.Add(settingsItem);
+
+        menu.Items.Add(new NativeMenuItemSeparator());
+
+        var restartItem = new NativeMenuItem(L("tray.menu.restart", "重启应用"));
+        restartItem.Click += OnTrayRestartClick;
+        menu.Items.Add(restartItem);
+
+        menu.Items.Add(new NativeMenuItemSeparator());
+
+        var exitItem = new NativeMenuItem(L("tray.menu.exit", "退出应用"));
+        exitItem.Click += OnTrayExitClick;
+        menu.Items.Add(exitItem);
+
+        return menu;
+    }
+
+    private void DisposeTrayIcon()
+    {
+        if (_trayIcons is null)
+        {
+            return;
+        }
+
+        TrayIcon.SetIcons(this, null);
+        foreach (var trayIcon in _trayIcons)
+        {
+            trayIcon.Dispose();
+        }
+
+        _trayIcons = null;
+    }
+
+    private string L(string key, string fallback)
+    {
+        var snapshot = _appSettingsService.Load();
+        var languageCode = _localizationService.NormalizeLanguageCode(snapshot.LanguageCode);
+        return _localizationService.GetString(languageCode, key, fallback);
+    }
 }

LanMountainDesktop/LanMountainDesktop.csproj

@@ -40,6 +40,7 @@
     </PackageReference>
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
     <PackageReference Include="DotNetCampus.AvaloniaInkCanvas" Version="1.0.1" />
+    <PackageReference Include="Downloader" Version="4.1.1" />
     <PackageReference Include="FluentAvaloniaUI" Version="2.5.0" />
     <PackageReference Include="FluentIcons.Avalonia" Version="2.0.319" />
     <PackageReference Include="FluentIcons.Avalonia.Fluent" Version="2.0.319" />

LanMountainDesktop/Localization/en-US.json

@@ -1,5 +1,9 @@
 {
     "app.title":  "LanMountainDesktop",
+    "tray.tooltip":  "LanMountainDesktop",
+    "tray.menu.settings":  "Settings",
+    "tray.menu.restart":  "Restart App",
+    "tray.menu.exit":  "Exit App",
     "button.back_to_windows":  "Back to Windows",
     "tooltip.back_to_windows":  "Back to Windows",
     "tooltip.open_settings":  "Settings",
@@ -302,15 +306,17 @@
     "settings.launcher.hidden_empty":  "No hidden items.",
     "settings.launcher.hidden_type_folder":  "Folder",
     "settings.launcher.hidden_type_shortcut":  "Shortcut",
-    "settings.launcher.restore_button":  "Show Again",
+    "settings.launcher.restore_button":  "Unhide",
     "settings.plugins.title":  "Plugins",
     "settings.plugins.runtime_header":  "Plugin Runtime",
     "settings.plugins.runtime_desc":  "Review plugin runtime state and load results.",
     "settings.plugins.runtime_hint":  "This page shows discovery status, load results, and runtime diagnostics for installed plugins.",
     "settings.plugins.runtime_status":  "Plugin runtime status will appear here after plugin discovery completes.",
     "settings.plugins.installed_header":  "Installed Plugins",
-    "settings.plugins.installed_desc":  "Enable or disable plugins here. Detailed plugin settings appear as separate settings pages.",
-    "settings.plugins.restart_hint":  "Plugin enable state changes take effect after restarting the app.",
+    "settings.plugins.installed_desc":  "Review installed plugins and remove them here.",
+    "settings.plugins.import_header":  "Install From Package",
+    "settings.plugins.import_desc":  "Open a .laapp package and stage it into the local plugin directory.",
+    "settings.plugins.restart_hint":  "Plugin installation and deletion changes take effect after restarting the app.",
     "settings.plugins.empty":  "No plugins found.",
     "settings.plugins.runtime_unavailable":  "Plugin runtime is not available.",
     "settings.plugins.summary_format":  "Detected {0} plugin(s); enabled {1}; loaded {2}; settings pages {3}; widgets {4}; failures {5}.",
@@ -325,6 +331,7 @@
     "settings.plugins.toggle_result_format":  "Plugin '{0}' was {1} for the next launch. Restart the app to apply page and widget changes.",
     "settings.plugins.toggle_state_enabled":  "enabled",
     "settings.plugins.toggle_state_disabled":  "disabled",
+    "settings.plugins.toggle_failed_detail_format":  "Failed to update plugin '{0}': {1}",
     "settings.plugins.install_button":  "Open .laapp package",
     "settings.plugins.install_unavailable":  "Plugin runtime is unavailable, so .laapp packages cannot be installed right now.",
     "settings.plugins.install_hint_format":  "Open a .laapp package to install it into: {0}",
@@ -334,14 +341,20 @@
     "settings.plugins.install_copy_failed":  "Failed to copy the selected .laapp package.",
     "settings.plugins.install_success_format":  "Installed plugin '{0}'. Restart the app to apply newly added settings pages and widgets.",
     "settings.plugins.install_failed_format":  "Failed to install plugin package: {0}",
+    "settings.plugins.delete_button":  "Delete plugin",
+    "settings.plugins.delete_success_format":  "Plugin '{0}' was staged for deletion. Restart the app to finish removing it.",
+    "settings.plugins.delete_failed_format":  "Failed to delete plugin: {0}",
+    "settings.plugins.delete_failed_detail_format":  "Failed to delete plugin '{0}': {1}",
+    "settings.plugins.publisher_format":  "Publisher: {0}",
+    "settings.plugins.publisher_unknown":  "Unknown publisher",
     "settings.plugins.source_package":  ".laapp package",
     "settings.plugins.source_manifest":  "Loose manifest",
     "settings.plugins.subtitle_format":  "{0} | {1} | {2}",
     "settings.plugins.detail_format":  "Settings pages: {0} | Widgets: {1}",
-    "settings.plugins.market_header":  "Official Market",
-    "settings.plugins.market_desc":  "Browse plugins from the official LanAirApp source and stage installs.",
-    "settings.plugins.market_hint":  "Use the official market source hosted in LanAirApp to discover and stage plugin installs.",
-    "settings.plugins.market_unavailable":  "Plugin runtime is not available, so the official market cannot be opened right now.",
+    "settings.nav.plugin_market":  "Plugin Market",
+    "settings.plugin_market.title":  "Plugin Market",
+    "settings.plugin_market.subtitle":  "Browse plugins from the official LanAirApp source and stage installs.",
+    "settings.plugin_market.unavailable":  "Plugin runtime is not available, so the official market cannot be opened right now.",
     "market.toolbar.search_placeholder":  "Search plugins",
     "market.toolbar.refresh":  "Refresh",
     "market.status.loading":  "Loading the official plugin market...",
@@ -364,6 +377,15 @@
     "market.detail.min_host_version":  "Minimum Host Version",
     "market.detail.installed_version":  "Installed Version",
     "market.detail.not_installed":  "Not installed",
+    "market.detail.readme":  "README",
+    "market.detail.plugin_information":  "Plugin Information",
+    "market.detail.author_subtitle_format":  "By {0}",
+    "market.detail.package_size":  "Package Size",
+    "market.detail.published_at":  "Published At",
+    "market.detail.updated_at":  "Updated At",
+    "market.detail.tags":  "Tags",
+    "market.detail.project":  "Project",
+    "market.detail.state":  "Install State",
     "market.detail.market_source":  "Market Source",
     "market.detail.homepage":  "Homepage",
     "market.detail.repository":  "Repository",

LanMountainDesktop/Localization/zh-CN.json

@@ -1,5 +1,9 @@
 {
     "app.title":  "LanMountainDesktop",
+    "tray.tooltip":  "LanMountainDesktop",
+    "tray.menu.settings":  "设置",
+    "tray.menu.restart":  "重启应用",
+    "tray.menu.exit":  "退出应用",
     "button.back_to_windows":  "回到Windows",
     "tooltip.back_to_windows":  "回到Windows",
     "tooltip.open_settings":  "设置",
@@ -302,15 +306,17 @@
     "settings.launcher.hidden_empty":  "暂无隐藏项目。",
     "settings.launcher.hidden_type_folder":  "文件夹",
     "settings.launcher.hidden_type_shortcut":  "快捷方式",
-    "settings.launcher.restore_button":  "重新显示",
+    "settings.launcher.restore_button":  "取消隐藏",
     "settings.plugins.title":  "插件",
     "settings.plugins.runtime_header":  "插件运行时",
     "settings.plugins.runtime_desc":  "查看插件运行时状态、加载结果与诊断信息。",
     "settings.plugins.runtime_hint":  "这里展示已安装插件的发现结果、加载状态和运行时诊断信息。",
     "settings.plugins.runtime_status":  "插件扫描完成后，运行时状态会显示在这里。",
     "settings.plugins.installed_header":  "已安装插件",
-    "settings.plugins.installed_desc":  "在这里启用或禁用插件。插件自己的详细设置会作为独立设置页出现。",
-    "settings.plugins.restart_hint":  "插件启用状态变更会在重启应用后生效。",
+    "settings.plugins.installed_desc":  "在这里查看和删除已安装的插件。",
+    "settings.plugins.import_header":  "从安装包导入",
+    "settings.plugins.import_desc":  "打开一个 .laapp 插件包，并将其暂存到本地插件目录。",
+    "settings.plugins.restart_hint":  "插件安装和删除变更会在重启应用后生效。",
     "settings.plugins.empty":  "未找到插件。",
     "settings.plugins.runtime_unavailable":  "插件运行时不可用。",
     "settings.plugins.summary_format":  "共检测到 {0} 个插件；已启用 {1} 个；已加载 {2} 个；设置页 {3} 个；组件 {4} 个；失败 {5} 个。",
@@ -325,6 +331,7 @@
     "settings.plugins.toggle_result_format":  "插件“{0}”已在下次启动时设为{1}。重启应用后，设置页和组件变更才会生效。",
     "settings.plugins.toggle_state_enabled":  "启用",
     "settings.plugins.toggle_state_disabled":  "禁用",
+    "settings.plugins.toggle_failed_detail_format":  "更新插件“{0}”状态失败：{1}",
     "settings.plugins.install_button":  "打开 .laapp 插件包",
     "settings.plugins.install_unavailable":  "插件运行时不可用，暂时无法安装 .laapp 插件包。",
     "settings.plugins.install_hint_format":  "打开一个 .laapp 插件包，安装到：{0}",
@@ -334,14 +341,20 @@
     "settings.plugins.install_copy_failed":  "复制所选 .laapp 插件包失败。",
     "settings.plugins.install_success_format":  "插件“{0}”安装完成。重启应用后，新增的设置页和组件才会生效。",
     "settings.plugins.install_failed_format":  "安装插件包失败：{0}",
+    "settings.plugins.delete_button":  "删除插件",
+    "settings.plugins.delete_success_format":  "插件“{0}”已暂存删除。重启应用后会完成移除。",
+    "settings.plugins.delete_failed_format":  "删除插件失败：{0}",
+    "settings.plugins.delete_failed_detail_format":  "删除插件“{0}”失败：{1}",
+    "settings.plugins.publisher_format":  "发布者：{0}",
+    "settings.plugins.publisher_unknown":  "未知发布者",
     "settings.plugins.source_package":  ".laapp 包",
     "settings.plugins.source_manifest":  "散装清单",
     "settings.plugins.subtitle_format":  "{0} | {1} | {2}",
     "settings.plugins.detail_format":  "设置页：{0} | 组件：{1}",
-    "settings.plugins.market_header":  "官方市场",
-    "settings.plugins.market_desc":  "浏览来自 LanAirApp 官方源的插件，并将安装暂存到本地。",
-    "settings.plugins.market_hint":  "这里使用托管在 LanAirApp 仓库中的官方市场索引来发现插件并暂存安装。",
-    "settings.plugins.market_unavailable":  "插件运行时不可用，暂时无法打开官方市场。",
+    "settings.nav.plugin_market":  "插件市场",
+    "settings.plugin_market.title":  "插件市场",
+    "settings.plugin_market.subtitle":  "浏览来自 LanAirApp 官方源的插件，并将安装暂存到本地。",
+    "settings.plugin_market.unavailable":  "插件运行时不可用，暂时无法打开官方市场。",
     "market.toolbar.search_placeholder":  "搜索插件",
     "market.toolbar.refresh":  "刷新",
     "market.status.loading":  "正在加载官方插件市场...",
@@ -364,6 +377,15 @@
     "market.detail.min_host_version":  "最低宿主版本",
     "market.detail.installed_version":  "已安装版本",
     "market.detail.not_installed":  "未安装",
+    "market.detail.readme":  "README",
+    "market.detail.plugin_information":  "插件信息",
+    "market.detail.author_subtitle_format":  "作者：{0}",
+    "market.detail.package_size":  "包大小",
+    "market.detail.published_at":  "首次发布",
+    "market.detail.updated_at":  "最近更新",
+    "market.detail.tags":  "标签",
+    "market.detail.project":  "项目",
+    "market.detail.state":  "安装状态",
     "market.detail.market_source":  "市场源",
     "market.detail.homepage":  "主页",
     "market.detail.repository":  "仓库",

LanMountainDesktop/Program.cs

@@ -2,6 +2,7 @@ using Avalonia;
 using Avalonia.WebView.Desktop;
 using LanMountainDesktop.Services;
 using System;
+using System.Threading.Tasks;
 
 namespace LanMountainDesktop;
 
@@ -11,8 +12,27 @@ sealed class Program
     // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
     // yet and stuff might break.
     [STAThread]
-    public static void Main(string[] args) => BuildAvaloniaApp(LoadConfiguredRenderMode())
-        .StartWithClassicDesktopLifetime(args);
+    public static void Main(string[] args)
+    {
+        AppLogger.Initialize();
+        RegisterGlobalExceptionLogging();
+
+        var diagnostics = StartupDiagnosticsService.Run(args);
+        StartupDiagnosticsService.ShowLegacyExecutableWarningIfNeeded(diagnostics);
+
+        try
+        {
+            var renderMode = LoadConfiguredRenderMode();
+            AppLogger.Info("Startup", $"Resolved render mode '{renderMode}'.");
+            BuildAvaloniaApp(renderMode).StartWithClassicDesktopLifetime(args);
+            AppLogger.Info("Startup", "Application exited normally.");
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Critical("Startup", "Application terminated during startup.", ex);
+            throw;
+        }
+    }
 
     // Avalonia configuration, don't remove; also used by visual designer.
     public static AppBuilder BuildAvaloniaApp(string renderMode = AppRenderingModeHelper.Default)
@@ -44,9 +64,26 @@ sealed class Program
         {
             return AppRenderingModeHelper.Normalize(new AppSettingsService().Load().AppRenderMode);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("Startup", "Failed to load configured render mode. Falling back to default.", ex);
             return AppRenderingModeHelper.Default;
         }
     }
+
+    private static void RegisterGlobalExceptionLogging()
+    {
+        AppDomain.CurrentDomain.UnhandledException += (_, eventArgs) =>
+        {
+            AppLogger.Critical(
+                "UnhandledException",
+                $"Unhandled exception. IsTerminating={eventArgs.IsTerminating}",
+                eventArgs.ExceptionObject as Exception);
+        };
+
+        TaskScheduler.UnobservedTaskException += (_, eventArgs) =>
+        {
+            AppLogger.Error("TaskScheduler", "Unobserved task exception.", eventArgs.Exception);
+        };
+    }
 }

LanMountainDesktop/Services/AppLogger.cs

@@ -0,0 +1,169 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace LanMountainDesktop.Services;
+
+public static class AppLogger
+{
+    private static readonly object SyncRoot = new();
+    private static bool _initialized;
+    private static string _logDirectory = string.Empty;
+    private static string _logFilePath = string.Empty;
+
+    public static string LogDirectory
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logDirectory;
+        }
+    }
+
+    public static string LogFilePath
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logFilePath;
+        }
+    }
+
+    public static void Initialize()
+    {
+        lock (SyncRoot)
+        {
+            if (_initialized)
+            {
+                return;
+            }
+
+            var preferredDirectory = Path.Combine(AppContext.BaseDirectory, "log");
+            var fallbackDirectory = Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                "LanMountainDesktop",
+                "log");
+
+            var preferredReady = TryPrepareDirectory(preferredDirectory, out var preferredError);
+            var fallbackReady = false;
+            string? fallbackError = null;
+
+            if (preferredReady)
+            {
+                _logDirectory = preferredDirectory;
+            }
+            else
+            {
+                fallbackReady = TryPrepareDirectory(fallbackDirectory, out fallbackError);
+                _logDirectory = fallbackReady ? fallbackDirectory : preferredDirectory;
+            }
+
+            _logFilePath = Path.Combine(_logDirectory, $"app-{DateTime.Now:yyyyMMdd}.log");
+            _initialized = true;
+
+            WriteCore(
+                "INFO",
+                "Logger",
+                $"Initialized. Directory={_logDirectory}; File={_logFilePath}; PreferredDirectory={preferredDirectory}");
+
+            if (!preferredReady && !string.IsNullOrWhiteSpace(preferredError))
+            {
+                WriteCore(
+                    "WARN",
+                    "Logger",
+                    $"Failed to use program log directory '{preferredDirectory}'. Falling back to '{_logDirectory}'. Reason: {preferredError}");
+            }
+
+            if (!preferredReady && !fallbackReady && !string.IsNullOrWhiteSpace(fallbackError))
+            {
+                Trace.WriteLine(
+                    $"[LanMountainDesktop][Logger][ERROR] Failed to initialize fallback log directory '{fallbackDirectory}': {fallbackError}");
+            }
+        }
+    }
+
+    public static void Info(string category, string message)
+    {
+        Write("INFO", category, message, null);
+    }
+
+    public static void Warn(string category, string message, Exception? exception = null)
+    {
+        Write("WARN", category, message, exception);
+    }
+
+    public static void Error(string category, string message, Exception? exception = null)
+    {
+        Write("ERROR", category, message, exception);
+    }
+
+    public static void Critical(string category, string message, Exception? exception = null)
+    {
+        Write("CRITICAL", category, message, exception);
+    }
+
+    private static void Write(string level, string category, string message, Exception? exception)
+    {
+        EnsureInitialized();
+
+        var payload = exception is null
+            ? message
+            : $"{message}{Environment.NewLine}{exception}";
+        WriteCore(level, category, payload);
+    }
+
+    private static void EnsureInitialized()
+    {
+        if (_initialized)
+        {
+            return;
+        }
+
+        Initialize();
+    }
+
+    private static void WriteCore(string level, string category, string message)
+    {
+        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var line = $"[{timestamp}] [{level}] [{category}] {message}";
+
+        lock (SyncRoot)
+        {
+            try
+            {
+                var directory = Path.GetDirectoryName(_logFilePath);
+                if (!string.IsNullOrWhiteSpace(directory))
+                {
+                    Directory.CreateDirectory(directory);
+                }
+
+                File.AppendAllText(_logFilePath, line + Environment.NewLine, Encoding.UTF8);
+            }
+            catch (Exception ex)
+            {
+                Trace.WriteLine($"[LanMountainDesktop][Logger][ERROR] {ex}");
+            }
+        }
+
+        Trace.WriteLine(line);
+    }
+
+    private static bool TryPrepareDirectory(string directory, out string? error)
+    {
+        try
+        {
+            Directory.CreateDirectory(directory);
+            var probePath = Path.Combine(directory, $".probe-{Guid.NewGuid():N}.tmp");
+            File.WriteAllText(probePath, "probe");
+            File.Delete(probePath);
+            error = null;
+            return true;
+        }
+        catch (Exception ex)
+        {
+            error = ex.Message;
+            return false;
+        }
+    }
+}

LanMountainDesktop/Services/AppSettingsService.cs

@@ -63,8 +63,9 @@ public sealed class AppSettingsService
                 return loadedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("AppSettings", $"Failed to load settings from '{_settingsPath}'.", ex);
             return new AppSettingsSnapshot();
         }
     }
@@ -95,9 +96,9 @@ public sealed class AppSettingsService
 
             SettingsSaved?.Invoke(InstanceId);
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("AppSettings", $"Failed to save settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -136,8 +137,9 @@ public sealed class AppSettingsService
             var json = File.ReadAllText(_settingsPath);
             return JsonSerializer.Deserialize<AppSettingsSnapshot>(json, SerializerOptions) ?? new AppSettingsSnapshot();
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("AppSettings", $"Failed to deserialize settings from '{_settingsPath}'.", ex);
             return new AppSettingsSnapshot();
         }
     }

LanMountainDesktop/Services/ComponentSettingsService.cs

@@ -51,8 +51,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return document.DefaultSettings.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to load component settings from '{_settingsPath}'.", ex);
             return new ComponentSettingsSnapshot();
         }
     }
@@ -76,9 +77,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("ComponentSettings", $"Failed to save default component settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -99,8 +100,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return document.DefaultSettings.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to load component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
             return new ComponentSettingsSnapshot();
         }
     }
@@ -124,9 +129,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to save component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -151,9 +159,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 }
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to delete component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -174,8 +185,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return JsonSerializer.Deserialize<T>(settingsElement.GetRawText(), SerializerOptions) ?? new T();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to load plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
             return new T();
         }
     }
@@ -197,9 +212,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to save plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -222,9 +240,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 }
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to delete plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -373,8 +394,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 DefaultSettings = NormalizeSnapshot(legacySnapshot)
             };
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to deserialize component settings from '{_settingsPath}'.", ex);
             return new ComponentSettingsDocumentSnapshot();
         }
     }
@@ -428,8 +450,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to migrate legacy component settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/DesktopLayoutSettingsService.cs

@@ -80,8 +80,9 @@ public sealed class DesktopLayoutSettingsService
                 return normalizedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to load desktop layout settings from '{_settingsPath}'.", ex);
             return new DesktopLayoutSettingsSnapshot();
         }
     }
@@ -99,9 +100,9 @@ public sealed class DesktopLayoutSettingsService
                 UpdateCache(snapshotToPersist, writeTimeUtc, DateTime.UtcNow);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("DesktopLayout", $"Failed to save desktop layout settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -141,8 +142,9 @@ public sealed class DesktopLayoutSettingsService
             var snapshot = JsonSerializer.Deserialize<DesktopLayoutSettingsSnapshot>(json, SerializerOptions);
             return NormalizeSnapshot(snapshot);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to deserialize desktop layout settings from '{_settingsPath}'.", ex);
             return new DesktopLayoutSettingsSnapshot();
         }
     }
@@ -174,8 +176,9 @@ public sealed class DesktopLayoutSettingsService
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to migrate legacy desktop layout settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/FileOperationRetryHelper.cs

@@ -0,0 +1,98 @@
+using System;
+using System.IO;
+using System.Threading;
+
+namespace LanMountainDesktop.Services;
+
+internal static class FileOperationRetryHelper
+{
+    private static readonly TimeSpan[] RetryDelays =
+    [
+        TimeSpan.FromMilliseconds(120),
+        TimeSpan.FromMilliseconds(250),
+        TimeSpan.FromMilliseconds(500)
+    ];
+
+    public static void CopyWithRetry(string sourceFilePath, string destinationFilePath, bool overwrite, string category)
+    {
+        Retry(
+            () => File.Copy(sourceFilePath, destinationFilePath, overwrite),
+            category,
+            $"Copy '{sourceFilePath}' -> '{destinationFilePath}'");
+    }
+
+    public static void MoveWithOverwriteRetry(string sourceFilePath, string destinationFilePath, string category)
+    {
+        Retry(
+            () => File.Move(sourceFilePath, destinationFilePath, overwrite: true),
+            category,
+            $"Move '{sourceFilePath}' -> '{destinationFilePath}'");
+    }
+
+    public static void DeleteFileWithRetry(string filePath, string category)
+    {
+        Retry(
+            () =>
+            {
+                if (File.Exists(filePath))
+                {
+                    File.Delete(filePath);
+                }
+            },
+            category,
+            $"Delete file '{filePath}'");
+    }
+
+    public static void DeleteDirectoryWithRetry(string directoryPath, bool recursive, string category)
+    {
+        Retry(
+            () =>
+            {
+                if (Directory.Exists(directoryPath))
+                {
+                    Directory.Delete(directoryPath, recursive);
+                }
+            },
+            category,
+            $"Delete directory '{directoryPath}'");
+    }
+
+    private static void Retry(Action action, string category, string operationDescription)
+    {
+        Exception? lastException = null;
+
+        for (var attempt = 0; attempt <= RetryDelays.Length; attempt++)
+        {
+            try
+            {
+                action();
+                return;
+            }
+            catch (Exception ex) when (IsRetriable(ex))
+            {
+                lastException = ex;
+                if (attempt >= RetryDelays.Length)
+                {
+                    break;
+                }
+
+                var delay = RetryDelays[attempt];
+                AppLogger.Warn(
+                    category,
+                    $"{operationDescription} failed on attempt {attempt + 1}. Retrying after {delay.TotalMilliseconds:0} ms.",
+                    ex);
+                Thread.Sleep(delay);
+            }
+        }
+
+        if (lastException is not null)
+        {
+            throw lastException;
+        }
+    }
+
+    private static bool IsRetriable(Exception exception)
+    {
+        return exception is IOException or UnauthorizedAccessException;
+    }
+}

LanMountainDesktop/Services/GitHubReleaseUpdateService.cs

@@ -45,6 +45,7 @@ public sealed class GitHubReleaseUpdateService : IDisposable
     private readonly string _owner;
     private readonly string _repo;
     private readonly HttpClient _httpClient;
+    private readonly ResumableDownloadService _downloadService;
     private readonly bool _ownsHttpClient;
 
     public GitHubReleaseUpdateService(
@@ -69,6 +70,8 @@ public sealed class GitHubReleaseUpdateService : IDisposable
             _ownsHttpClient = false;
         }
 
+        _downloadService = new ResumableDownloadService(_httpClient);
+
         if (!_httpClient.DefaultRequestHeaders.UserAgent.Any())
         {
             _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-Updater/1.0");
@@ -187,59 +190,20 @@ public sealed class GitHubReleaseUpdateService : IDisposable
             return new UpdateDownloadResult(false, null, "Destination file path is empty.");
         }
 
-        try
-        {
-            var directory = Path.GetDirectoryName(destinationFilePath);
-            if (!string.IsNullOrWhiteSpace(directory))
-            {
-                Directory.CreateDirectory(directory);
-            }
+        var progressAdapter = progress is null
+            ? null
+            : new Progress<DownloadProgressInfo>(info => progress.Report(info.Progress));
 
-            using var response = await _httpClient.GetAsync(
-                asset.BrowserDownloadUrl,
-                HttpCompletionOption.ResponseHeadersRead,
-                cancellationToken);
+        var result = await _downloadService.DownloadAsync(
+            asset.BrowserDownloadUrl,
+            destinationFilePath,
+            new DownloadOptions(ExpectedSizeBytes: asset.SizeBytes > 0 ? asset.SizeBytes : null),
+            progressAdapter,
+            cancellationToken);
 
-            if (!response.IsSuccessStatusCode)
-            {
-                return new UpdateDownloadResult(
-                    false,
-                    null,
-                    $"HTTP {(int)response.StatusCode}: {response.ReasonPhrase}");
-            }
-
-            var contentLength = response.Content.Headers.ContentLength ??
-                                (asset.SizeBytes > 0 ? asset.SizeBytes : -1);
-
-            await using var sourceStream = await response.Content.ReadAsStreamAsync(cancellationToken);
-            await using var destinationStream = File.Create(destinationFilePath);
-
-            var buffer = new byte[81920];
-            long totalRead = 0;
-            int read;
-            while ((read = await sourceStream.ReadAsync(buffer, cancellationToken)) > 0)
-            {
-                await destinationStream.WriteAsync(buffer.AsMemory(0, read), cancellationToken);
-                totalRead += read;
-
-                if (contentLength > 0)
-                {
-                    progress?.Report(Math.Clamp(totalRead / (double)contentLength, 0d, 1d));
-                }
-            }
-
-            progress?.Report(1d);
-
-            return new UpdateDownloadResult(true, destinationFilePath, null);
-        }
-        catch (OperationCanceledException)
-        {
-            throw;
-        }
-        catch (Exception ex)
-        {
-            return new UpdateDownloadResult(false, null, ex.Message);
-        }
+        return result.Success
+            ? new UpdateDownloadResult(true, result.FilePath ?? destinationFilePath, null)
+            : new UpdateDownloadResult(false, null, result.ErrorMessage);
     }
 
     public async Task<GitHubReleaseInfo?> GetReleaseByTagAsync(

LanMountainDesktop/Services/LauncherSettingsService.cs

@@ -85,8 +85,9 @@ public sealed class LauncherSettingsService
                 return normalizedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to load launcher settings from '{_settingsPath}'.", ex);
             return new LauncherSettingsSnapshot();
         }
     }
@@ -106,9 +107,9 @@ public sealed class LauncherSettingsService
 
             SettingsSaved?.Invoke(InstanceId);
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("LauncherSettings", $"Failed to save launcher settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -148,8 +149,9 @@ public sealed class LauncherSettingsService
             var snapshot = JsonSerializer.Deserialize<LauncherSettingsSnapshot>(json, SerializerOptions);
             return NormalizeSnapshot(snapshot);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to deserialize launcher settings from '{_settingsPath}'.", ex);
             return new LauncherSettingsSnapshot();
         }
     }
@@ -180,8 +182,9 @@ public sealed class LauncherSettingsService
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to migrate legacy launcher settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/ResumableDownloadService.cs

@@ -0,0 +1,412 @@
+using System;
+using System.Collections.Concurrent;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Downloader;
+
+namespace LanMountainDesktop.Services;
+
+public sealed record DownloadProgressInfo(
+    long DownloadedBytes,
+    long? TotalBytes,
+    double Progress,
+    bool IsResuming,
+    bool IsParallel);
+
+public sealed record DownloadOptions(
+    long? ExpectedSizeBytes = null,
+    int MaxParallelSegments = 4,
+    int ParallelThresholdBytes = 8 * 1024 * 1024,
+    int BufferSize = 128 * 1024);
+
+public sealed record DownloadResult(
+    bool Success,
+    string? FilePath,
+    string? ErrorMessage,
+    bool UsedResume,
+    bool UsedParallelDownload);
+
+public sealed class ResumableDownloadService
+{
+    private static readonly ConcurrentDictionary<string, SemaphoreSlim> DestinationGates =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    public ResumableDownloadService(System.Net.Http.HttpClient httpClient)
+    {
+    }
+
+    public async Task<DownloadResult> DownloadAsync(
+        string source,
+        string destinationFilePath,
+        DownloadOptions? options = null,
+        IProgress<DownloadProgressInfo>? progress = null,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(source);
+        ArgumentException.ThrowIfNullOrWhiteSpace(destinationFilePath);
+
+        var normalizedOptions = NormalizeOptions(options);
+        var fullDestinationPath = Path.GetFullPath(destinationFilePath);
+        var destinationGate = DestinationGates.GetOrAdd(
+            fullDestinationPath,
+            static _ => new SemaphoreSlim(1, 1));
+
+        await destinationGate.WaitAsync(cancellationToken);
+        try
+        {
+            if (File.Exists(source))
+            {
+                return await CopyLocalFileAsync(
+                    source,
+                    fullDestinationPath,
+                    normalizedOptions,
+                    progress,
+                    cancellationToken);
+            }
+
+            if (!Uri.TryCreate(source, UriKind.Absolute, out var sourceUri) ||
+                (sourceUri.Scheme != Uri.UriSchemeHttp && sourceUri.Scheme != Uri.UriSchemeHttps))
+            {
+                return new DownloadResult(false, null, $"Unsupported download source '{source}'.", false, false);
+            }
+
+            return await DownloadRemoteFileAsync(
+                sourceUri,
+                fullDestinationPath,
+                normalizedOptions,
+                progress,
+                cancellationToken);
+        }
+        catch (OperationCanceledException)
+        {
+            throw;
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(
+                "Downloader",
+                $"Download failed. Source='{source}'; Destination='{fullDestinationPath}'.",
+                ex);
+            return new DownloadResult(false, null, ex.Message, false, false);
+        }
+        finally
+        {
+            destinationGate.Release();
+        }
+    }
+
+    private async Task<DownloadResult> CopyLocalFileAsync(
+        string sourceFilePath,
+        string destinationFilePath,
+        DownloadOptions options,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        var fullSourcePath = Path.GetFullPath(sourceFilePath);
+        var fullDestinationPath = Path.GetFullPath(destinationFilePath);
+        var totalBytes = new FileInfo(fullSourcePath).Length;
+
+        var tempFilePath = BuildTempFilePath(fullDestinationPath);
+        PrepareDestination(fullDestinationPath);
+
+        if (CanReuseCompletedDestination(fullDestinationPath, totalBytes))
+        {
+            progress?.Report(new DownloadProgressInfo(totalBytes, totalBytes, 1d, false, false));
+            CleanupLocalPartialArtifacts(tempFilePath);
+            return new DownloadResult(true, fullDestinationPath, null, false, false);
+        }
+
+        long existingBytes = 0;
+        if (File.Exists(tempFilePath))
+        {
+            existingBytes = new FileInfo(tempFilePath).Length;
+            if (existingBytes > totalBytes)
+            {
+                CleanupLocalPartialArtifacts(tempFilePath);
+                existingBytes = 0;
+            }
+        }
+
+        if (!File.Exists(tempFilePath))
+        {
+            await using var tempCreateStream = new FileStream(
+                tempFilePath,
+                FileMode.Create,
+                FileAccess.Write,
+                FileShare.Read,
+                options.BufferSize,
+                FileOptions.Asynchronous | FileOptions.SequentialScan);
+        }
+
+        if (existingBytes >= totalBytes)
+        {
+            CompleteLocalCopy(tempFilePath, fullDestinationPath);
+            progress?.Report(new DownloadProgressInfo(totalBytes, totalBytes, 1d, existingBytes > 0, false));
+            return new DownloadResult(true, fullDestinationPath, null, existingBytes > 0, false);
+        }
+
+        await using var sourceStream = new FileStream(
+            fullSourcePath,
+            FileMode.Open,
+            FileAccess.Read,
+            FileShare.Read,
+            options.BufferSize,
+            FileOptions.Asynchronous | FileOptions.SequentialScan);
+        await using var destinationStream = new FileStream(
+            tempFilePath,
+            FileMode.Open,
+            FileAccess.Write,
+            FileShare.Read,
+            options.BufferSize,
+            FileOptions.Asynchronous | FileOptions.SequentialScan);
+
+        if (existingBytes > 0)
+        {
+            sourceStream.Seek(existingBytes, SeekOrigin.Begin);
+            destinationStream.Seek(existingBytes, SeekOrigin.Begin);
+        }
+
+        await CopyStreamAsync(
+            sourceStream,
+            destinationStream,
+            existingBytes,
+            totalBytes,
+            progress,
+            cancellationToken);
+
+        CompleteLocalCopy(tempFilePath, fullDestinationPath);
+        return new DownloadResult(true, fullDestinationPath, null, existingBytes > 0, false);
+    }
+
+    private async Task<DownloadResult> DownloadRemoteFileAsync(
+        Uri sourceUri,
+        string destinationFilePath,
+        DownloadOptions options,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        PrepareDestination(destinationFilePath);
+
+        if (CanReuseCompletedDestination(destinationFilePath, options.ExpectedSizeBytes))
+        {
+            var existingLength = new FileInfo(destinationFilePath).Length;
+            progress?.Report(new DownloadProgressInfo(existingLength, options.ExpectedSizeBytes, 1d, false, false));
+            CleanupDownloaderArtifacts(destinationFilePath);
+            return new DownloadResult(true, destinationFilePath, null, false, false);
+        }
+
+        var usedResume = HasDownloaderResumeArtifacts(destinationFilePath);
+        var usedParallelDownload = ShouldUseParallelDownload(options);
+        var configuration = CreateConfiguration(options, usedParallelDownload);
+        using var downloader = new DownloadService(configuration);
+
+        downloader.DownloadProgressChanged += (_, args) =>
+        {
+            progress?.Report(MapProgress(args, options.ExpectedSizeBytes, usedResume, usedParallelDownload));
+        };
+
+        using var cancellationRegistration = cancellationToken.Register(() =>
+        {
+            try
+            {
+                downloader.CancelAsync();
+            }
+            catch (Exception ex)
+            {
+                AppLogger.Warn(
+                    "Downloader",
+                    $"Failed to cancel Downloader request for '{destinationFilePath}'.",
+                    ex);
+            }
+        });
+
+        AppLogger.Info(
+            "Downloader",
+            $"Starting remote download. Source='{sourceUri}'; Destination='{destinationFilePath}'; Parallel={usedParallelDownload}; ChunkCount={configuration.ChunkCount}; Resume={usedResume}.");
+
+        await downloader.DownloadFileTaskAsync(sourceUri.AbsoluteUri, destinationFilePath);
+
+        if (!File.Exists(destinationFilePath))
+        {
+            throw new FileNotFoundException(
+                $"Downloader completed without producing '{destinationFilePath}'.",
+                destinationFilePath);
+        }
+
+        var finalLength = new FileInfo(destinationFilePath).Length;
+        progress?.Report(new DownloadProgressInfo(
+            finalLength,
+            options.ExpectedSizeBytes ?? finalLength,
+            1d,
+            usedResume,
+            usedParallelDownload));
+
+        AppLogger.Info(
+            "Downloader",
+            $"Remote download completed. Source='{sourceUri}'; Destination='{destinationFilePath}'; Size={finalLength}; Parallel={usedParallelDownload}; Resume={usedResume}.");
+
+        return new DownloadResult(true, destinationFilePath, null, usedResume, usedParallelDownload);
+    }
+
+    private static async Task CopyStreamAsync(
+        Stream sourceStream,
+        Stream destinationStream,
+        long initialDownloadedBytes,
+        long totalBytes,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        var buffer = new byte[128 * 1024];
+        var downloadedBytes = initialDownloadedBytes;
+        progress?.Report(new DownloadProgressInfo(downloadedBytes, totalBytes, downloadedBytes / (double)totalBytes, initialDownloadedBytes > 0, false));
+
+        while (true)
+        {
+            var read = await sourceStream.ReadAsync(buffer.AsMemory(0, buffer.Length), cancellationToken);
+            if (read <= 0)
+            {
+                break;
+            }
+
+            await destinationStream.WriteAsync(buffer.AsMemory(0, read), cancellationToken);
+            downloadedBytes += read;
+            progress?.Report(new DownloadProgressInfo(
+                downloadedBytes,
+                totalBytes,
+                Math.Clamp(downloadedBytes / (double)totalBytes, 0d, 1d),
+                initialDownloadedBytes > 0,
+                false));
+        }
+
+        await destinationStream.FlushAsync(cancellationToken);
+    }
+
+    private static DownloadConfiguration CreateConfiguration(DownloadOptions options, bool useParallelDownload)
+    {
+        return new DownloadConfiguration
+        {
+            BufferBlockSize = options.BufferSize,
+            ChunkCount = useParallelDownload ? options.MaxParallelSegments : 1,
+            ParallelCount = useParallelDownload ? options.MaxParallelSegments : 1,
+            ParallelDownload = useParallelDownload,
+            MinimumSizeOfChunking = options.ParallelThresholdBytes,
+            MaxTryAgainOnFailure = 3,
+            ResumeDownloadIfCan = true,
+            ClearPackageOnCompletionWithFailure = false,
+            FileExistPolicy = FileExistPolicy.Delete,
+            DownloadFileExtension = ".part"
+        };
+    }
+
+    private static DownloadProgressInfo MapProgress(
+        DownloadProgressChangedEventArgs args,
+        long? expectedSizeBytes,
+        bool isResuming,
+        bool isParallel)
+    {
+        var totalBytes = args.TotalBytesToReceive > 0
+            ? args.TotalBytesToReceive
+            : expectedSizeBytes;
+        var downloadedBytes = Math.Max(0L, args.ReceivedBytesSize);
+        var normalizedProgress = args.ProgressPercentage > 1d
+            ? args.ProgressPercentage / 100d
+            : args.ProgressPercentage;
+
+        if (totalBytes is > 0 && normalizedProgress <= 0d)
+        {
+            normalizedProgress = downloadedBytes / (double)totalBytes.Value;
+        }
+
+        return new DownloadProgressInfo(
+            downloadedBytes,
+            totalBytes,
+            Math.Clamp(normalizedProgress, 0d, 1d),
+            isResuming,
+            isParallel);
+    }
+
+    private static bool CanReuseCompletedDestination(string destinationFilePath, long? expectedSizeBytes)
+    {
+        if (!File.Exists(destinationFilePath))
+        {
+            return false;
+        }
+
+        if (expectedSizeBytes is not > 0)
+        {
+            return false;
+        }
+
+        return new FileInfo(destinationFilePath).Length == expectedSizeBytes.Value;
+    }
+
+    private static void PrepareDestination(string destinationFilePath)
+    {
+        var directory = Path.GetDirectoryName(destinationFilePath);
+        if (!string.IsNullOrWhiteSpace(directory))
+        {
+            Directory.CreateDirectory(directory);
+        }
+    }
+
+    private static void CleanupLocalPartialArtifacts(string tempFilePath)
+    {
+        if (File.Exists(tempFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(tempFilePath, "Downloader");
+        }
+    }
+
+    private static void CompleteLocalCopy(string tempFilePath, string destinationFilePath)
+    {
+        if (!File.Exists(tempFilePath))
+        {
+            return;
+        }
+
+        FileOperationRetryHelper.MoveWithOverwriteRetry(tempFilePath, destinationFilePath, "Downloader");
+    }
+
+    private static void CleanupDownloaderArtifacts(string destinationFilePath)
+    {
+        var transientFilePath = BuildTempFilePath(destinationFilePath);
+        var metadataFilePath = BuildPackageFilePath(destinationFilePath);
+
+        if (File.Exists(transientFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(transientFilePath, "Downloader");
+        }
+
+        if (File.Exists(metadataFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(metadataFilePath, "Downloader");
+        }
+    }
+
+    private static bool HasDownloaderResumeArtifacts(string destinationFilePath)
+    {
+        return File.Exists(BuildTempFilePath(destinationFilePath)) ||
+               File.Exists(BuildPackageFilePath(destinationFilePath));
+    }
+
+    private static bool ShouldUseParallelDownload(DownloadOptions options)
+    {
+        return options.MaxParallelSegments > 1;
+    }
+
+    private static DownloadOptions NormalizeOptions(DownloadOptions? options)
+    {
+        var normalized = options ?? new DownloadOptions();
+        return normalized with
+        {
+            MaxParallelSegments = Math.Clamp(normalized.MaxParallelSegments, 1, 8),
+            ParallelThresholdBytes = Math.Max(1_048_576, normalized.ParallelThresholdBytes),
+            BufferSize = Math.Max(16 * 1024, normalized.BufferSize)
+        };
+    }
+
+    private static string BuildTempFilePath(string destinationFilePath) => destinationFilePath + ".part";
+
+    private static string BuildPackageFilePath(string destinationFilePath) => destinationFilePath + ".download";
+}

LanMountainDesktop/Services/StartupDiagnosticsService.cs

@@ -0,0 +1,193 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace LanMountainDesktop.Services;
+
+public sealed class StartupDiagnosticsResult
+{
+    public string ExecutablePath { get; init; } = string.Empty;
+
+    public string BaseDirectory { get; init; } = string.Empty;
+
+    public string ExecutableName { get; init; } = string.Empty;
+
+    public bool IsLegacyExecutableLaunch { get; init; }
+
+    public IReadOnlyList<string> FoundLegacyArtifacts { get; init; } = Array.Empty<string>();
+
+    public IReadOnlyList<string> DeletedLegacyArtifacts { get; init; } = Array.Empty<string>();
+
+    public IReadOnlyList<string> FailedLegacyArtifacts { get; init; } = Array.Empty<string>();
+}
+
+public static class StartupDiagnosticsService
+{
+    private const string CurrentExecutableName = "LanMountainDesktop.exe";
+
+    private static readonly string[] LegacyArtifactNames =
+    [
+        "LanMontainDesktop.exe",
+        "LanMontainDesktop.dll",
+        "LanMontainDesktop.deps.json",
+        "LanMontainDesktop.runtimeconfig.json",
+        "LanMontainDesktop.pdb",
+        "LanMontainDesktop.exe.WebView2"
+    ];
+
+    public static StartupDiagnosticsResult Run(string[] args)
+    {
+        var executablePath = ResolveExecutablePath();
+        var baseDirectory = AppContext.BaseDirectory;
+        var executableName = Path.GetFileName(executablePath);
+        var assemblyVersion = Assembly.GetEntryAssembly()?.GetName().Version?.ToString() ?? "unknown";
+        var fileVersion = string.Empty;
+
+        try
+        {
+            if (!string.IsNullOrWhiteSpace(executablePath) && File.Exists(executablePath))
+            {
+                fileVersion = FileVersionInfo.GetVersionInfo(executablePath).FileVersion ?? string.Empty;
+            }
+        }
+        catch
+        {
+            // Keep diagnostics best-effort.
+        }
+
+        AppLogger.Info(
+            "Startup",
+            $"Application starting. ExecutablePath={executablePath}; BaseDirectory={baseDirectory}; ExecutableName={executableName}; AssemblyVersion={assemblyVersion}; FileVersion={fileVersion}; Args=[{string.Join(", ", args)}]");
+
+        var foundLegacyArtifacts = LegacyArtifactNames
+            .Select(name => Path.Combine(baseDirectory, name))
+            .Where(path => File.Exists(path) || Directory.Exists(path))
+            .OrderBy(path => path, StringComparer.OrdinalIgnoreCase)
+            .ToList();
+
+        var deletedLegacyArtifacts = new List<string>();
+        var failedLegacyArtifacts = new List<string>();
+        foreach (var legacyArtifact in foundLegacyArtifacts)
+        {
+            if (string.Equals(legacyArtifact, executablePath, StringComparison.OrdinalIgnoreCase))
+            {
+                continue;
+            }
+
+            if (TryDeleteLegacyArtifact(legacyArtifact, out var error))
+            {
+                deletedLegacyArtifacts.Add(legacyArtifact);
+            }
+            else if (!string.IsNullOrWhiteSpace(error))
+            {
+                failedLegacyArtifacts.Add($"{legacyArtifact} ({error})");
+            }
+        }
+
+        if (foundLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Found legacy artifacts: {string.Join("; ", foundLegacyArtifacts)}");
+        }
+
+        if (deletedLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Info(
+                "StartupDiagnostics",
+                $"Deleted legacy artifacts: {string.Join("; ", deletedLegacyArtifacts)}");
+        }
+
+        if (failedLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Failed to delete legacy artifacts: {string.Join("; ", failedLegacyArtifacts)}");
+        }
+
+        var isLegacyExecutableLaunch = string.Equals(
+            executableName,
+            "LanMontainDesktop.exe",
+            StringComparison.OrdinalIgnoreCase);
+
+        if (isLegacyExecutableLaunch)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Legacy executable launch detected. Current executable should be '{CurrentExecutableName}', but actual executable is '{executableName}'.");
+        }
+
+        return new StartupDiagnosticsResult
+        {
+            ExecutablePath = executablePath,
+            BaseDirectory = baseDirectory,
+            ExecutableName = executableName,
+            IsLegacyExecutableLaunch = isLegacyExecutableLaunch,
+            FoundLegacyArtifacts = foundLegacyArtifacts,
+            DeletedLegacyArtifacts = deletedLegacyArtifacts,
+            FailedLegacyArtifacts = failedLegacyArtifacts
+        };
+    }
+
+    public static void ShowLegacyExecutableWarningIfNeeded(StartupDiagnosticsResult diagnostics)
+    {
+        if (!diagnostics.IsLegacyExecutableLaunch)
+        {
+            return;
+        }
+
+        var message =
+            "检测到当前是从旧残留可执行文件启动的。\r\n\r\n" +
+            $"当前文件: {diagnostics.ExecutableName}\r\n" +
+            $"当前路径: {diagnostics.ExecutablePath}\r\n\r\n" +
+            $"请改用 {CurrentExecutableName} 启动，以免继续读取旧残留文件。\r\n" +
+            $"日志目录: {AppLogger.LogDirectory}";
+
+        WindowsNativeDialogService.ShowWarning("LanMountainDesktop 启动诊断", message);
+    }
+
+    private static string ResolveExecutablePath()
+    {
+        try
+        {
+            return Environment.ProcessPath ??
+                   Process.GetCurrentProcess().MainModule?.FileName ??
+                   string.Empty;
+        }
+        catch
+        {
+            return string.Empty;
+        }
+    }
+
+    private static bool TryDeleteLegacyArtifact(string path, out string? error)
+    {
+        try
+        {
+            if (File.Exists(path))
+            {
+                File.Delete(path);
+                error = null;
+                return true;
+            }
+
+            if (Directory.Exists(path))
+            {
+                Directory.Delete(path, recursive: true);
+                error = null;
+                return true;
+            }
+
+            error = null;
+            return false;
+        }
+        catch (Exception ex)
+        {
+            error = ex.Message;
+            return false;
+        }
+    }
+}

LanMountainDesktop/Services/WindowsNativeDialogService.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace LanMountainDesktop.Services;
+
+internal static class WindowsNativeDialogService
+{
+    private const uint Ok = 0x00000000;
+    private const uint IconWarning = 0x00000030;
+
+    public static void ShowWarning(string caption, string message)
+    {
+        if (!OperatingSystem.IsWindows())
+        {
+            return;
+        }
+
+        try
+        {
+            _ = MessageBoxW(IntPtr.Zero, message, caption, Ok | IconWarning);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("StartupDiagnostics", "Failed to show legacy executable warning dialog.", ex);
+        }
+    }
+
+    [DllImport("user32.dll", EntryPoint = "MessageBoxW", CharSet = CharSet.Unicode, SetLastError = true)]
+    private static extern int MessageBoxW(IntPtr hWnd, string text, string caption, uint type);
+}

LanMountainDesktop/Services/WindowsStartupService.cs

@@ -30,8 +30,9 @@ public sealed class WindowsStartupService
             return runKey?.GetValue(ValueName) is string value &&
                    !string.IsNullOrWhiteSpace(value);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("WindowsStartup", "Failed to query startup registry state.", ex);
             return false;
         }
     }
@@ -67,8 +68,9 @@ public sealed class WindowsStartupService
 
             return IsEnabled() == enabled;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("WindowsStartup", $"Failed to set startup registry state. Enabled={enabled}", ex);
             return false;
         }
     }

LanMountainDesktop/Views/MainWindow.DesktopPaging.cs

@@ -13,6 +13,7 @@ using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using Avalonia.Threading;
 using Avalonia.VisualTree;
+using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 
@@ -1069,12 +1070,12 @@ public partial class MainWindow
 
     private void RenderLauncherHiddenItemsList()
     {
-        if (LauncherHiddenItemsListPanel is null || LauncherHiddenItemsEmptyTextBlock is null)
+        if (LauncherHiddenItemsSettingsExpander is null || LauncherHiddenItemsEmptyTextBlock is null)
         {
             return;
         }
 
-        LauncherHiddenItemsListPanel.Children.Clear();
+        LauncherHiddenItemsSettingsExpander.Items.Clear();
         var hiddenItems = BuildLauncherHiddenItems();
         LauncherHiddenItemsEmptyTextBlock.IsVisible = hiddenItems.Count == 0;
         if (hiddenItems.Count == 0)
@@ -1084,7 +1085,7 @@ public partial class MainWindow
 
         foreach (var hiddenItem in hiddenItems)
         {
-            LauncherHiddenItemsListPanel.Children.Add(CreateLauncherHiddenItemRow(hiddenItem));
+            LauncherHiddenItemsSettingsExpander.Items.Add(CreateLauncherHiddenItemRow(hiddenItem));
         }
     }
 
@@ -1186,92 +1187,47 @@ public partial class MainWindow
             : fileName;
     }
 
-    private Control CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
+    private SettingsExpanderItem CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
     {
-        Control icon = hiddenItem.IconBitmap is not null
-            ? new Image
-            {
-                Source = hiddenItem.IconBitmap,
-                Width = 24,
-                Height = 24,
-                Stretch = Stretch.Uniform
-            }
-            : new Border
-            {
-                Width = 24,
-                Height = 24,
-                CornerRadius = new CornerRadius(999),
-                Background = GetThemeBrush("AdaptiveButtonBackgroundBrush"),
-                Child = new TextBlock
-                {
-                    Text = hiddenItem.Monogram,
-                    FontSize = 10,
-                    FontWeight = FontWeight.Bold,
-                    HorizontalAlignment = HorizontalAlignment.Center,
-                    VerticalAlignment = VerticalAlignment.Center
-                }
-            };
-
         var typeText = hiddenItem.Kind == LauncherEntryKind.Folder
             ? L("settings.launcher.hidden_type_folder", "Folder")
             : L("settings.launcher.hidden_type_shortcut", "Shortcut");
 
-        var infoPanel = new StackPanel
-        {
-            Orientation = Orientation.Horizontal,
-            Spacing = 10,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Stretch
-        };
-        infoPanel.Children.Add(icon);
-        infoPanel.Children.Add(new StackPanel
-        {
-            Spacing = 2,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            Children =
-            {
-                new TextBlock
-                {
-                    Text = hiddenItem.DisplayName,
-                    TextTrimming = TextTrimming.CharacterEllipsis,
-                    MaxLines = 1
-                },
-                new TextBlock
-                {
-                    Text = typeText,
-                    FontSize = 11,
-                    Opacity = 0.7
-                }
-            }
-        });
-
         var restoreButton = new Button
         {
-            Content = L("settings.launcher.restore_button", "Show Again"),
+            Content = L("settings.launcher.restore_button", "Unhide"),
             MinWidth = 110,
             Padding = new Thickness(12, 6),
             Tag = new LauncherHiddenItemToken(hiddenItem.Kind, hiddenItem.Key)
         };
         restoreButton.Click += OnRestoreLauncherHiddenItemClick;
 
-        var row = new Grid
+        return new SettingsExpanderItem
         {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 10
+            Content = hiddenItem.DisplayName,
+            Description = typeText,
+            IconSource = CreateLauncherHiddenItemIconSource(hiddenItem),
+            IsClickEnabled = false,
+            Footer = restoreButton
         };
-        row.Children.Add(infoPanel);
-        Grid.SetColumn(infoPanel, 0);
-        row.Children.Add(restoreButton);
-        Grid.SetColumn(restoreButton, 1);
+    }
 
-        return new Border
+    private IconSource CreateLauncherHiddenItemIconSource(LauncherHiddenItemView hiddenItem)
+    {
+        if (hiddenItem.IconBitmap is not null)
         {
-            Classes = { "glass-panel" },
-            BorderThickness = new Thickness(0),
-            CornerRadius = new CornerRadius(14),
-            Padding = new Thickness(10, 8),
-            Child = row
+            return new ImageIconSource
+            {
+                Source = hiddenItem.IconBitmap
+            };
+        }
+
+        return new FluentIcons.Avalonia.Fluent.SymbolIconSource
+        {
+            Symbol = hiddenItem.Kind == LauncherEntryKind.Folder
+                ? FluentIcons.Common.Symbol.Folder
+                : FluentIcons.Common.Symbol.Apps,
+            IconVariant = FluentIcons.Common.IconVariant.Regular
         };
     }
 

LanMountainDesktop/Views/MainWindow.Localization.cs

@@ -119,6 +119,7 @@ public partial class MainWindow
         SettingsNavUpdateItem.Content = L("settings.nav.update", "Update");
         SettingsNavLauncherItem.Content = L("settings.nav.launcher", "App Launcher");
         SettingsNavPluginsItem.Content = L("settings.nav.plugins", "Plugins");
+        SettingsNavPluginMarketItem.Content = L("settings.nav.plugin_market", "Plugin Market");
 
         WallpaperPanelTitleTextBlock.Text = L("settings.wallpaper.title", "Personalize your wallpaper");
         WallpaperPlacementSettingsExpander.Header = L("settings.wallpaper.placement_label", "Placement");
@@ -283,6 +284,7 @@ public partial class MainWindow
         LauncherHiddenItemsEmptyTextBlock.Text = L("settings.launcher.hidden_empty", "No hidden items.");
 
         ApplyPluginSettingsLocalization();
+        ApplyPluginMarketSettingsLocalization();
 
         SettingsNavAboutItem.Content = L("settings.nav.about", "About");
         AboutPanelTitleTextBlock.Text = L("settings.about.title", "About");

LanMountainDesktop/Views/MainWindow.Settings.cs

@@ -115,7 +115,8 @@ public partial class MainWindow
             UpdateSettingsPanel is null ||
             LauncherSettingsPanel is null ||
             AboutSettingsPanel is null ||
-            PluginSettingsPanel is null)
+            PluginSettingsPanel is null ||
+            PluginMarketSettingsPanel is null)
         {
             return;
         }
@@ -133,6 +134,7 @@ public partial class MainWindow
         AboutSettingsPanel.IsVisible = tag == "About";
         LauncherSettingsPanel.IsVisible = tag == "Launcher";
         PluginSettingsPanel.IsVisible = tag == "Plugins";
+        PluginMarketSettingsPanel.IsVisible = tag == "PluginMarket";
         UpdatePluginSettingsPageVisibility(tag);
 
         if (tag == "Launcher")
@@ -140,6 +142,16 @@ public partial class MainWindow
             RenderLauncherHiddenItemsList();
         }
 
+        if (tag == "Plugins")
+        {
+            PluginSettingsPanel.RefreshFromRuntime();
+        }
+
+        if (tag == "PluginMarket")
+        {
+            PluginMarketSettingsPanel.RefreshFromRuntime();
+        }
+
         if (tag == "Grid")
         {
             UpdateGridPreviewLayout();
@@ -2793,7 +2805,6 @@ public partial class MainWindow
     // --- LauncherSettingsPage ---
     internal TextBlock LauncherSettingsPanelTitleTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherSettingsPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander LauncherHiddenItemsSettingsExpander => LauncherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("LauncherHiddenItemsSettingsExpander")!;
-    internal StackPanel LauncherHiddenItemsListPanel => LauncherSettingsPanel.FindControl<StackPanel>("LauncherHiddenItemsListPanel")!;
     internal TextBlock LauncherHiddenItemsEmptyTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsEmptyTextBlock")!;
     internal TextBlock LauncherHiddenItemsDescriptionTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsDescriptionTextBlock")!;
 

LanMountainDesktop/Views/MainWindow.axaml

@@ -436,6 +436,11 @@
                                         <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
                                     </ui:NavigationViewItem.IconSource>
                                 </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavPluginMarketItem" Content="插件市场" Tag="PluginMarket" ToolTip.Tip="插件市场">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
                             </ui:NavigationView.MenuItems>
 
                             <ScrollViewer x:Name="SettingsContentScrollViewer"
@@ -459,6 +464,7 @@
                                     <pages:LauncherSettingsPage x:Name="LauncherSettingsPanel" IsVisible="False" />
                                     <pages:AboutSettingsPage x:Name="AboutSettingsPanel" IsVisible="False" />
                                     <pages:PluginSettingsPage x:Name="PluginSettingsPanel" IsVisible="False" />
+                                    <pages:PluginMarketSettingsPage x:Name="PluginMarketSettingsPanel" IsVisible="False" />
                                 </Grid>
                             </ScrollViewer>
                         </ui:NavigationView>

LanMountainDesktop/Views/SettingsPages/LauncherSettingsPage.axaml

@@ -31,12 +31,6 @@
                                    IsVisible="False"
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                    Text="No hidden items." />
-                        <ScrollViewer MaxHeight="420"
-                                      VerticalScrollBarVisibility="Auto"
-                                      HorizontalScrollBarVisibility="Disabled">
-                            <StackPanel x:Name="LauncherHiddenItemsListPanel"
-                                        Spacing="8" />
-                        </ScrollViewer>
                     </StackPanel>
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>

LanMountainDesktop/Views/SettingsWindow.Controls.cs

@@ -211,7 +211,6 @@ public partial class SettingsWindow
     // --- LauncherSettingsPage ---
     internal TextBlock LauncherSettingsPanelTitleTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherSettingsPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander LauncherHiddenItemsSettingsExpander => LauncherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("LauncherHiddenItemsSettingsExpander")!;
-    internal StackPanel LauncherHiddenItemsListPanel => LauncherSettingsPanel.FindControl<StackPanel>("LauncherHiddenItemsListPanel")!;
     internal TextBlock LauncherHiddenItemsEmptyTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsEmptyTextBlock")!;
     internal TextBlock LauncherHiddenItemsDescriptionTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsDescriptionTextBlock")!;
 

LanMountainDesktop/Views/SettingsWindow.Core.cs

@@ -69,6 +69,7 @@ public partial class SettingsWindow
         AddSettingsNavItem(SettingsSecondaryNavHost, "Update", Symbol.ArrowSync, "Update");
         AddSettingsNavItem(SettingsSecondaryNavHost, "About", Symbol.Info, "About");
         AddSettingsNavItem(SettingsSecondaryNavHost, "Plugins", Symbol.PuzzlePiece, "Plugins");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "PluginMarket", Symbol.PuzzlePiece, "Plugin Market");
     }
 
     private void OnSettingsNavItemClick(object? sender, RoutedEventArgs e)
@@ -229,6 +230,7 @@ public partial class SettingsWindow
         AboutSettingsPanel.IsVisible = tag == "About";
         LauncherSettingsPanel.IsVisible = tag == "Launcher";
         PluginSettingsPanel.IsVisible = tag == "Plugins";
+        PluginMarketSettingsPanel.IsVisible = tag == "PluginMarket";
         UpdatePluginSettingsPageVisibility(tag);
 
         if (tag == "Launcher")
@@ -236,6 +238,16 @@ public partial class SettingsWindow
             RenderLauncherHiddenItemsList();
         }
 
+        if (tag == "Plugins")
+        {
+            PluginSettingsPanel.RefreshFromRuntime();
+        }
+
+        if (tag == "PluginMarket")
+        {
+            PluginMarketSettingsPanel.RefreshFromRuntime();
+        }
+
         if (tag == "Grid")
         {
             UpdateGridPreviewLayout();

LanMountainDesktop/Views/SettingsWindow.Localization.cs

@@ -74,6 +74,7 @@ public partial class SettingsWindow
         SetSettingsNavItemLabel(GetSettingsNavItem("About"), L("settings.nav.about", "About"));
         SetSettingsNavItemLabel(GetSettingsNavItem("Launcher"), L("settings.nav.launcher", "App Launcher"));
         SetSettingsNavItemLabel(GetSettingsNavItem("Plugins"), L("settings.nav.plugins", "Plugins"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("PluginMarket"), L("settings.nav.plugin_market", "Plugin Market"));
 
         WallpaperPanelTitleTextBlock.Text = L("settings.wallpaper.title", "Personalize your wallpaper");
         WallpaperPlacementSettingsExpander.Header = L("settings.wallpaper.placement_label", "Placement");
@@ -177,6 +178,7 @@ public partial class SettingsWindow
         LauncherHiddenItemsEmptyTextBlock.Text = L("settings.launcher.hidden_empty", "No hidden items.");
 
         ApplyPluginSettingsLocalization();
+        ApplyPluginMarketSettingsLocalization();
 
         AboutPanelTitleTextBlock.Text = L("settings.about.title", "About");
         VersionTextBlock.Text = Lf("settings.about.version_format", "Version: {0}", GetAppVersionText());

LanMountainDesktop/Views/SettingsWindow.WeatherLauncher.cs

@@ -11,6 +11,7 @@ using Avalonia.Layout;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using Avalonia.Threading;
+using FluentAvalonia.UI.Controls;
 using FluentIcons.Common;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
@@ -626,18 +627,18 @@ public partial class SettingsWindow
         return string.Create(CultureInfo.InvariantCulture, $"{temperatureC:0.#}°C");
     }
 
-    private static Symbol ResolveWeatherPreviewSymbol(int? weatherCode, bool isNight)
+    private static FluentIcons.Common.Symbol ResolveWeatherPreviewSymbol(int? weatherCode, bool isNight)
     {
         return weatherCode switch
         {
-            0 => isNight ? Symbol.WeatherMoon : Symbol.WeatherSunny,
-            1 or 2 => isNight ? Symbol.WeatherPartlyCloudyNight : Symbol.WeatherPartlyCloudyDay,
-            3 or 7 => Symbol.WeatherRainShowersDay,
-            8 or 9 => Symbol.WeatherRain,
-            4 => Symbol.WeatherThunderstorm,
-            13 or 14 or 15 or 16 => Symbol.WeatherSnow,
-            18 or 32 => Symbol.WeatherFog,
-            _ => isNight ? Symbol.WeatherPartlyCloudyNight : Symbol.WeatherPartlyCloudyDay
+            0 => isNight ? FluentIcons.Common.Symbol.WeatherMoon : FluentIcons.Common.Symbol.WeatherSunny,
+            1 or 2 => isNight ? FluentIcons.Common.Symbol.WeatherPartlyCloudyNight : FluentIcons.Common.Symbol.WeatherPartlyCloudyDay,
+            3 or 7 => FluentIcons.Common.Symbol.WeatherRainShowersDay,
+            8 or 9 => FluentIcons.Common.Symbol.WeatherRain,
+            4 => FluentIcons.Common.Symbol.WeatherThunderstorm,
+            13 or 14 or 15 or 16 => FluentIcons.Common.Symbol.WeatherSnow,
+            18 or 32 => FluentIcons.Common.Symbol.WeatherFog,
+            _ => isNight ? FluentIcons.Common.Symbol.WeatherPartlyCloudyNight : FluentIcons.Common.Symbol.WeatherPartlyCloudyDay
         };
     }
 
@@ -782,7 +783,7 @@ public partial class SettingsWindow
 
     private void RenderLauncherHiddenItemsList()
     {
-        LauncherHiddenItemsListPanel.Children.Clear();
+        LauncherHiddenItemsSettingsExpander.Items.Clear();
         var hiddenItems = BuildLauncherHiddenItems();
         LauncherHiddenItemsEmptyTextBlock.IsVisible = hiddenItems.Count == 0;
         if (hiddenItems.Count == 0)
@@ -792,7 +793,7 @@ public partial class SettingsWindow
 
         foreach (var hiddenItem in hiddenItems)
         {
-            LauncherHiddenItemsListPanel.Children.Add(CreateLauncherHiddenItemRow(hiddenItem));
+            LauncherHiddenItemsSettingsExpander.Items.Add(CreateLauncherHiddenItemRow(hiddenItem));
         }
     }
 
@@ -864,82 +865,47 @@ public partial class SettingsWindow
         return string.IsNullOrWhiteSpace(fileName) ? key : fileName;
     }
 
-    private Control CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
+    private SettingsExpanderItem CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
     {
-        Control icon = hiddenItem.IconBitmap is not null
-            ? new Image
-            {
-                Source = hiddenItem.IconBitmap,
-                Width = 24,
-                Height = 24,
-                Stretch = Stretch.Uniform
-            }
-            : new Border
-            {
-                Width = 24,
-                Height = 24,
-                CornerRadius = new CornerRadius(999),
-                Background = GetThemeBrush("AdaptiveButtonBackgroundBrush"),
-                Child = new TextBlock
-                {
-                    Text = hiddenItem.Monogram,
-                    FontSize = 10,
-                    FontWeight = FontWeight.Bold,
-                    HorizontalAlignment = HorizontalAlignment.Center,
-                    VerticalAlignment = VerticalAlignment.Center
-                }
-            };
-
         var typeText = hiddenItem.Kind == LauncherEntryKind.Folder
             ? L("settings.launcher.hidden_type_folder", "Folder")
             : L("settings.launcher.hidden_type_shortcut", "Shortcut");
 
-        var infoPanel = new StackPanel
-        {
-            Orientation = Orientation.Horizontal,
-            Spacing = 10,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Stretch
-        };
-        infoPanel.Children.Add(icon);
-        infoPanel.Children.Add(new StackPanel
-        {
-            Spacing = 2,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            Children =
-            {
-                new TextBlock { Text = hiddenItem.DisplayName, TextTrimming = TextTrimming.CharacterEllipsis, MaxLines = 1 },
-                new TextBlock { Text = typeText, FontSize = 11, Opacity = 0.7 }
-            }
-        });
-
         var restoreButton = new Button
         {
-            Content = L("settings.launcher.restore_button", "Show Again"),
+            Content = L("settings.launcher.restore_button", "Unhide"),
             MinWidth = 110,
             Padding = new Thickness(12, 6),
             Tag = new LauncherHiddenItemToken(hiddenItem.Kind, hiddenItem.Key)
         };
         restoreButton.Click += OnRestoreLauncherHiddenItemClick;
 
-        var row = new Grid
+        return new SettingsExpanderItem
         {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 10
+            Content = hiddenItem.DisplayName,
+            Description = typeText,
+            IconSource = CreateLauncherHiddenItemIconSource(hiddenItem),
+            IsClickEnabled = false,
+            Footer = restoreButton
         };
-        row.Children.Add(infoPanel);
-        Grid.SetColumn(infoPanel, 0);
-        row.Children.Add(restoreButton);
-        Grid.SetColumn(restoreButton, 1);
+    }
 
-        return new Border
+    private IconSource CreateLauncherHiddenItemIconSource(LauncherHiddenItemView hiddenItem)
+    {
+        if (hiddenItem.IconBitmap is not null)
         {
-            Classes = { "glass-panel" },
-            BorderThickness = new Thickness(0),
-            CornerRadius = new CornerRadius(14),
-            Padding = new Thickness(10, 8),
-            Child = row
+            return new ImageIconSource
+            {
+                Source = hiddenItem.IconBitmap
+            };
+        }
+
+        return new FluentIcons.Avalonia.Fluent.SymbolIconSource
+        {
+            Symbol = hiddenItem.Kind == LauncherEntryKind.Folder
+                ? FluentIcons.Common.Symbol.Folder
+                : FluentIcons.Common.Symbol.Apps,
+            IconVariant = FluentIcons.Common.IconVariant.Regular
         };
     }
 

LanMountainDesktop/Views/SettingsWindow.axaml

@@ -253,6 +253,7 @@
                                     <pages:LauncherSettingsPage x:Name="LauncherSettingsPanel" IsVisible="False" />
                                     <pages:AboutSettingsPage x:Name="AboutSettingsPanel" IsVisible="False" />
                                     <pages:PluginSettingsPage x:Name="PluginSettingsPanel" IsVisible="False" />
+                                    <pages:PluginMarketSettingsPage x:Name="PluginMarketSettingsPanel" IsVisible="False" />
                                 </Grid>
                             </ScrollViewer>
                         </Border>

LanMountainDesktop/installer/ChineseSimplified.isl

@@ -0,0 +1,418 @@
+; *** Inno Setup version 6.5.0+ Chinese Simplified messages ***
+;
+; To download user-contributed translations of this file, go to:
+;   https://jrsoftware.org/files/istrans/
+;
+; Note: When translating this text, do not add periods (.) to the end of
+; messages that didn't have them already, because on those messages Inno
+; Setup adds the periods automatically (appending a period would result in
+; two periods being displayed).
+;
+; Maintained by Zhenghan Yang
+; Email: 847320916@QQ.com
+; Translation based on network resource
+; The latest Translation is on https://github.com/kira-96/Inno-Setup-Chinese-Simplified-Translation
+;
+
+[LangOptions]
+; The following three entries are very important. Be sure to read and 
+; understand the '[LangOptions] section' topic in the help file.
+LanguageName=简体中文
+; If Language Name display incorrect, uncomment next line
+; LanguageName=<7B80><4F53><4E2D><6587>
+; About LanguageID, to reference link:
+; https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c
+LanguageID=$0804
+; About CodePage, to reference link:
+; https://docs.microsoft.com/en-us/windows/win32/intl/code-page-identifiers
+LanguageCodePage=936
+; If the language you are translating to requires special font faces or
+; sizes, uncomment any of the following entries and change them accordingly.
+;DialogFontName=
+;DialogFontSize=9
+;DialogFontBaseScaleWidth=7
+;DialogFontBaseScaleHeight=15
+;WelcomeFontName=Segoe UI
+;WelcomeFontSize=14
+
+[Messages]
+
+; *** 应用程序标题
+SetupAppTitle=安装
+SetupWindowTitle=安装 - %1
+UninstallAppTitle=卸载
+UninstallAppFullTitle=%1 卸载
+
+; *** Misc. common
+InformationTitle=信息
+ConfirmTitle=确认
+ErrorTitle=错误
+
+; *** SetupLdr messages
+SetupLdrStartupMessage=现在将安装 %1。您想要继续吗？
+LdrCannotCreateTemp=无法创建临时文件。安装程序已中止
+LdrCannotExecTemp=无法执行临时目录中的文件。安装程序已中止
+HelpTextNote=
+
+; *** 启动错误消息
+LastErrorMessage=%1。%n%n错误 %2: %3
+SetupFileMissing=安装目录中缺少文件 %1。请修正这个问题或者获取程序的新副本。
+SetupFileCorrupt=安装文件已损坏。请获取程序的新副本。
+SetupFileCorruptOrWrongVer=安装文件已损坏，或是与这个安装程序的版本不兼容。请修正这个问题或获取新的程序副本。
+InvalidParameter=无效的命令行参数：%n%n%1
+SetupAlreadyRunning=安装程序正在运行。
+WindowsVersionNotSupported=此程序不支持当前计算机运行的 Windows 版本。
+WindowsServicePackRequired=此程序需要 %1 服务包 %2 或更高版本。
+NotOnThisPlatform=此程序不能在 %1 上运行。
+OnlyOnThisPlatform=此程序只能在 %1 上运行。
+OnlyOnTheseArchitectures=此程序只能安装到为下列处理器架构设计的 Windows 版本中：%n%n%1
+WinVersionTooLowError=此程序需要 %1 版本 %2 或更高。
+WinVersionTooHighError=此程序不能安装于 %1 版本 %2 或更高。
+AdminPrivilegesRequired=在安装此程序时您必须以管理员身份登录。
+PowerUserPrivilegesRequired=在安装此程序时您必须以管理员身份或有权限的用户组身份登录。
+SetupAppRunningError=安装程序发现 %1 当前正在运行。%n%n请先关闭正在运行的程序，然后点击“确定”继续，或点击“取消”退出。
+UninstallAppRunningError=卸载程序发现 %1 当前正在运行。%n%n请先关闭正在运行的程序，然后点击“确定”继续，或点击“取消”退出。
+
+; *** 启动问题
+PrivilegesRequiredOverrideTitle=选择安装程序模式
+PrivilegesRequiredOverrideInstruction=选择安装模式
+PrivilegesRequiredOverrideText1=%1 可以为所有用户安装(需要管理员权限)，或仅为您安装。
+PrivilegesRequiredOverrideText2=%1 可以仅为您安装，或为所有用户安装(需要管理员权限)。
+PrivilegesRequiredOverrideAllUsers=为所有用户安装(&A)
+PrivilegesRequiredOverrideAllUsersRecommended=为所有用户安装(&A) (建议选项)
+PrivilegesRequiredOverrideCurrentUser=仅为我安装(&M)
+PrivilegesRequiredOverrideCurrentUserRecommended=仅为我安装(&M) (建议选项)
+
+; *** 其他错误
+ErrorCreatingDir=安装程序无法创建目录“%1”
+ErrorTooManyFilesInDir=无法在目录“%1”中创建文件，因为里面包含太多文件
+
+; *** 安装程序公共消息
+ExitSetupTitle=退出安装程序
+ExitSetupMessage=安装程序尚未完成。如果现在退出，将不会安装该程序。%n%n您之后可以再次运行安装程序完成安装。%n%n现在退出安装程序吗？
+AboutSetupMenuItem=关于安装程序(&A)...
+AboutSetupTitle=关于安装程序
+AboutSetupMessage=%1 版本 %2%n%3%n%n%1 主页：%n%4
+AboutSetupNote=
+TranslatorNote=简体中文翻译由Kira(847320916@qq.com)维护。项目地址：https://github.com/kira-96/Inno-Setup-Chinese-Simplified-Translation
+
+; *** 按钮
+ButtonBack=< 上一步(&B)
+ButtonNext=下一步(&N) >
+ButtonInstall=安装(&I)
+ButtonOK=确定
+ButtonCancel=取消
+ButtonYes=是(&Y)
+ButtonYesToAll=全是(&A)
+ButtonNo=否(&N)
+ButtonNoToAll=全否(&O)
+ButtonFinish=完成(&F)
+ButtonBrowse=浏览(&B)...
+ButtonWizardBrowse=浏览(&R)...
+ButtonNewFolder=新建文件夹(&M)
+
+; *** “选择语言”对话框消息
+SelectLanguageTitle=选择安装语言
+SelectLanguageLabel=选择安装时使用的语言。
+
+; *** 公共向导文字
+ClickNext=点击“下一步”继续，或点击“取消”退出安装程序。
+BeveledLabel=
+BrowseDialogTitle=浏览文件夹
+BrowseDialogLabel=在下面的列表中选择一个文件夹，然后点击“确定”。
+NewFolderName=新建文件夹
+
+; *** “欢迎”向导页
+WelcomeLabel1=欢迎使用 [name] 安装向导
+WelcomeLabel2=现在将安装 [name/ver] 到您的电脑中。%n%n建议您在继续安装前关闭所有其他应用程序。
+
+; *** “密码”向导页
+WizardPassword=密码
+PasswordLabel1=这个安装程序有密码保护。
+PasswordLabel3=请输入密码，然后点击“下一步”继续。密码区分大小写。
+PasswordEditLabel=密码(&P)：
+IncorrectPassword=您输入的密码不正确，请重新输入。
+
+; *** “许可协议”向导页
+WizardLicense=许可协议
+LicenseLabel=请在继续安装前阅读以下重要信息。
+LicenseLabel3=请仔细阅读下列许可协议。在继续安装前您必须同意这些协议条款。
+LicenseAccepted=我同意此协议(&A)
+LicenseNotAccepted=我不同意此协议(&D)
+
+; *** “信息”向导页
+WizardInfoBefore=信息
+InfoBeforeLabel=请在继续安装前阅读以下重要信息。
+InfoBeforeClickLabel=准备好继续安装后，点击“下一步”。
+WizardInfoAfter=信息
+InfoAfterLabel=请在继续安装前阅读以下重要信息。
+InfoAfterClickLabel=准备好继续安装后，点击“下一步”。
+
+; *** “用户信息”向导页
+WizardUserInfo=用户信息
+UserInfoDesc=请输入您的信息。
+UserInfoName=用户名(&U)：
+UserInfoOrg=组织(&O)：
+UserInfoSerial=序列号(&S)：
+UserInfoNameRequired=您必须输入用户名。
+
+; *** “选择目标目录”向导页
+WizardSelectDir=选择目标位置
+SelectDirDesc=您想将 [name] 安装在哪里？
+SelectDirLabel3=安装程序将安装 [name] 到下面的文件夹中。
+SelectDirBrowseLabel=点击“下一步”继续。如果您想选择其他文件夹，点击“浏览”。
+DiskSpaceGBLabel=至少需要有 [gb] GB 的可用磁盘空间。
+DiskSpaceMBLabel=至少需要有 [mb] MB 的可用磁盘空间。
+CannotInstallToNetworkDrive=安装程序无法安装到一个网络驱动器。
+CannotInstallToUNCPath=安装程序无法安装到一个 UNC 路径。
+InvalidPath=您必须输入一个带驱动器卷标的完整路径，例如：%n%nC:\APP%n%n或UNC路径：%n%n\\server\share
+InvalidDrive=您选定的驱动器或 UNC 共享不存在或不能访问。请选择其他位置。
+DiskSpaceWarningTitle=磁盘空间不足
+DiskSpaceWarning=安装程序至少需要 %1 KB 的可用空间才能安装，但选定驱动器只有 %2 KB 的可用空间。%n%n您一定要继续吗？
+DirNameTooLong=文件夹名称或路径太长。
+InvalidDirName=文件夹名称无效。
+BadDirName32=文件夹名称不能包含下列任何字符：%n%n%1
+DirExistsTitle=文件夹已存在
+DirExists=文件夹：%n%n%1%n%n已经存在。您一定要安装到这个文件夹中吗？
+DirDoesntExistTitle=文件夹不存在
+DirDoesntExist=文件夹：%n%n%1%n%n不存在。您想要创建此文件夹吗？
+
+; *** “选择组件”向导页
+WizardSelectComponents=选择组件
+SelectComponentsDesc=您想安装哪些程序组件？
+SelectComponentsLabel2=选中您想安装的组件；取消您不想安装的组件。然后点击“下一步”继续。
+FullInstallation=完全安装
+; if possible don't translate 'Compact' as 'Minimal' (I mean 'Minimal' in your language)
+CompactInstallation=简洁安装
+CustomInstallation=自定义安装
+NoUninstallWarningTitle=组件已存在
+NoUninstallWarning=安装程序检测到下列组件已安装在您的电脑中：%n%n%1%n%n取消选中这些组件不会卸载它们。%n%n确定要继续吗？
+ComponentSize1=%1 KB
+ComponentSize2=%1 MB
+ComponentsDiskSpaceGBLabel=当前选择的组件需要至少 [gb] GB 的磁盘空间。
+ComponentsDiskSpaceMBLabel=当前选择的组件需要至少 [mb] MB 的磁盘空间。
+
+; *** “选择附加任务”向导页
+WizardSelectTasks=选择附加任务
+SelectTasksDesc=您想要安装程序执行哪些附加任务？
+SelectTasksLabel2=选择您想要安装程序在安装 [name] 时执行的附加任务，然后点击“下一步”。
+
+; *** “选择开始菜单文件夹”向导页
+WizardSelectProgramGroup=选择开始菜单文件夹
+SelectStartMenuFolderDesc=安装程序应该在哪里放置程序的快捷方式？
+SelectStartMenuFolderLabel3=安装程序将在下列“开始”菜单文件夹中创建程序的快捷方式。
+SelectStartMenuFolderBrowseLabel=点击“下一步”继续。如果您想选择其他文件夹，点击“浏览”。
+MustEnterGroupName=您必须输入一个文件夹名。
+GroupNameTooLong=文件夹名或路径太长。
+InvalidGroupName=无效的文件夹名字。
+BadGroupName=文件夹名不能包含下列任何字符：%n%n%1
+NoProgramGroupCheck2=不创建开始菜单文件夹(&D)
+
+; *** “准备安装”向导页
+WizardReady=准备安装
+ReadyLabel1=安装程序准备就绪，现在可以开始安装 [name] 到您的电脑。
+ReadyLabel2a=点击“安装”继续此安装程序。如果您想重新考虑或修改任何设置，点击“上一步”。
+ReadyLabel2b=点击“安装”继续此安装程序。
+ReadyMemoUserInfo=用户信息：
+ReadyMemoDir=目标位置：
+ReadyMemoType=安装类型：
+ReadyMemoComponents=已选择组件：
+ReadyMemoGroup=开始菜单文件夹：
+ReadyMemoTasks=附加任务：
+
+; *** TExtractionWizardPage 向导页面与 ExtractArchive
+ExtractingLabel=正在解压文件...
+ButtonStopExtraction=停止解压(&S)
+StopExtraction=您确定要停止解压吗？
+ErrorExtractionAborted=解压已中止
+ErrorExtractionFailed=解压失败：%1
+
+; *** 压缩文件解压失败详情
+ArchiveIncorrectPassword=压缩文件密码不正确
+ArchiveIsCorrupted=压缩文件已损坏
+ArchiveUnsupportedFormat=不支持的压缩文件格式
+
+; *** TDownloadWizardPage 向导页面和 DownloadTemporaryFile
+DownloadingLabel2=正在下载文件...
+ButtonStopDownload=停止下载(&S)
+StopDownload=您确定要停止下载吗？
+ErrorDownloadAborted=下载已中止
+ErrorDownloadFailed=下载失败：%1 %2
+ErrorDownloadSizeFailed=获取下载大小失败：%1 %2
+ErrorProgress=无效的进度：%1 / %2
+ErrorFileSize=文件大小错误：预期 %1，实际 %2
+
+; *** “正在准备安装”向导页
+WizardPreparing=正在准备安装
+PreparingDesc=安装程序正在准备安装 [name] 到您的电脑。
+PreviousInstallNotCompleted=先前的程序安装或卸载未完成，您需要重启您的电脑以完成。%n%n在重启电脑后，再次运行安装程序以完成 [name] 的安装。
+CannotContinue=安装程序不能继续。请点击“取消”退出。
+ApplicationsFound=以下应用程序正在使用将由安装程序更新的文件。建议您允许安装程序自动关闭这些应用程序。
+ApplicationsFound2=以下应用程序正在使用将由安装程序更新的文件。建议您允许安装程序自动关闭这些应用程序。安装完成后，安装程序将尝试重新启动这些应用程序。
+CloseApplications=自动关闭应用程序(&A)
+DontCloseApplications=不要关闭应用程序(&D)
+ErrorCloseApplications=安装程序无法自动关闭所有应用程序。建议您在继续之前，关闭所有在使用需要由安装程序更新的文件的应用程序。
+PrepareToInstallNeedsRestart=安装程序必须重启您的计算机。计算机重启后，请再次运行安装程序以完成 [name] 的安装。%n%n是否立即重新启动？
+
+; *** “正在安装”向导页
+WizardInstalling=正在安装
+InstallingLabel=安装程序正在安装 [name] 到您的电脑，请稍候。
+
+; *** “安装完成”向导页
+FinishedHeadingLabel=[name] 安装完成
+FinishedLabelNoIcons=安装程序已在您的电脑中安装了 [name]。
+FinishedLabel=安装程序已在您的电脑中安装了 [name]。您可以通过已安装的快捷方式运行此应用程序。
+ClickFinish=点击“完成”退出安装程序。
+FinishedRestartLabel=为完成 [name] 的安装，安装程序必须重新启动您的电脑。要立即重启吗？
+FinishedRestartMessage=为完成 [name] 的安装，安装程序必须重新启动您的电脑。%n%n要立即重启吗？
+ShowReadmeCheck=是，我想查阅自述文件
+YesRadio=是，立即重启电脑(&Y)
+NoRadio=否，稍后重启电脑(&N)
+; used for example as 'Run MyProg.exe'
+RunEntryExec=运行 %1
+; used for example as 'View Readme.txt'
+RunEntryShellExec=查阅 %1
+
+; *** “安装程序需要下一张磁盘”提示
+ChangeDiskTitle=安装程序需要下一张磁盘
+SelectDiskLabel2=请插入磁盘 %1 并点击“确定”。%n%n如果这个磁盘中的文件可以在下列文件夹之外的文件夹中找到，请输入正确的路径或点击“浏览”。
+PathLabel=路径(&P)：
+FileNotInDir2=“%2”中找不到文件“%1”。请插入正确的磁盘或选择其他文件夹。
+SelectDirectoryLabel=请指定下一张磁盘的位置。
+
+; *** 安装阶段消息
+SetupAborted=安装程序未完成安装。%n%n请修正这个问题并重新运行安装程序。
+AbortRetryIgnoreSelectAction=选择操作
+AbortRetryIgnoreRetry=重试(&T)
+AbortRetryIgnoreIgnore=忽略错误并继续(&I)
+AbortRetryIgnoreCancel=关闭安装程序
+RetryCancelSelectAction=选择操作
+RetryCancelRetry=重试(&T)
+RetryCancelCancel=取消(&C)
+
+; *** 安装状态消息
+StatusClosingApplications=正在关闭应用程序...
+StatusCreateDirs=正在创建目录...
+StatusExtractFiles=正在提取文件...
+StatusDownloadFiles=正在下载文件...
+StatusCreateIcons=正在创建快捷方式...
+StatusCreateIniEntries=正在创建 INI 条目...
+StatusCreateRegistryEntries=正在创建注册表条目...
+StatusRegisterFiles=正在注册文件...
+StatusSavingUninstall=正在保存卸载信息...
+StatusRunProgram=正在完成安装...
+StatusRestartingApplications=正在重启应用程序...
+StatusRollback=正在撤销更改...
+
+; *** 其他错误
+ErrorInternal2=内部错误：%1
+ErrorFunctionFailedNoCode=%1 失败
+ErrorFunctionFailed=%1 失败；错误代码 %2
+ErrorFunctionFailedWithMessage=%1 失败；错误代码 %2.%n%3
+ErrorExecutingProgram=无法执行文件：%n%1
+
+; *** 注册表错误
+ErrorRegOpenKey=打开注册表项时出错：%n%1\%2
+ErrorRegCreateKey=创建注册表项时出错：%n%1\%2
+ErrorRegWriteKey=写入注册表项时出错：%n%1\%2
+
+; *** INI 错误
+ErrorIniEntry=在文件“%1”中创建 INI 条目时出错。
+
+; *** 文件复制错误
+FileAbortRetryIgnoreSkipNotRecommended=跳过此文件(&S) (不推荐)
+FileAbortRetryIgnoreIgnoreNotRecommended=忽略错误并继续(&I) (不推荐)
+SourceIsCorrupted=源文件已损坏
+SourceDoesntExist=源文件“%1”不存在
+SourceVerificationFailed=源文件验证失败: %1
+VerificationSignatureDoesntExist=签名文件“%1”不存在
+VerificationSignatureInvalid=签名文件“%1”无效
+VerificationKeyNotFound=签名文件“%1”使用了未知密钥
+VerificationFileNameIncorrect=文件名不正确
+VerificationFileTagIncorrect=文件标签不正确
+VerificationFileSizeIncorrect=文件大小不正确
+VerificationFileHashIncorrect=文件哈希值不正确
+ExistingFileReadOnly2=无法替换现有文件，它是只读的。
+ExistingFileReadOnlyRetry=移除只读属性并重试(&R)
+ExistingFileReadOnlyKeepExisting=保留现有文件(&K)
+ErrorReadingExistingDest=尝试读取现有文件时出错：
+FileExistsSelectAction=选择操作
+FileExists2=文件已经存在。
+FileExistsOverwriteExisting=覆盖已存在的文件(&O)
+FileExistsKeepExisting=保留现有的文件(&K)
+FileExistsOverwriteOrKeepAll=为所有冲突文件执行此操作(&D)
+ExistingFileNewerSelectAction=选择操作
+ExistingFileNewer2=现有的文件比安装程序将要安装的文件还要新。
+ExistingFileNewerOverwriteExisting=覆盖已存在的文件(&O)
+ExistingFileNewerKeepExisting=保留现有的文件(&K) (推荐)
+ExistingFileNewerOverwriteOrKeepAll=为所有冲突文件执行此操作(&D)
+ErrorChangingAttr=尝试更改下列现有文件的属性时出错：
+ErrorCreatingTemp=尝试在目标目录创建文件时出错：
+ErrorReadingSource=尝试读取下列源文件时出错：
+ErrorCopying=尝试复制下列文件时出错：
+ErrorDownloading=下载文件时出错：
+ErrorExtracting=解压压缩文件时出错：
+ErrorReplacingExistingFile=尝试替换现有文件时出错：
+ErrorRestartReplace=重启并替换失败：
+ErrorRenamingTemp=尝试重命名下列目标目录中的一个文件时出错：
+ErrorRegisterServer=无法注册 DLL/OCX：%1
+ErrorRegSvr32Failed=RegSvr32 失败；退出代码 %1
+ErrorRegisterTypeLib=无法注册类库：%1
+
+; *** 卸载显示名字标记
+; used for example as 'My Program (32-bit)'
+UninstallDisplayNameMark=%1 (%2)
+; used for example as 'My Program (32-bit, All users)'
+UninstallDisplayNameMarks=%1 (%2, %3)
+UninstallDisplayNameMark32Bit=32 位
+UninstallDisplayNameMark64Bit=64 位
+UninstallDisplayNameMarkAllUsers=所有用户
+UninstallDisplayNameMarkCurrentUser=当前用户
+
+; *** 安装后错误
+ErrorOpeningReadme=尝试打开自述文件时出错。
+ErrorRestartingComputer=安装程序无法重启电脑，请手动重启。
+
+; *** 卸载消息
+UninstallNotFound=文件“%1”不存在。无法卸载。
+UninstallOpenError=文件“%1”不能被打开。无法卸载。
+UninstallUnsupportedVer=此版本的卸载程序无法识别卸载日志文件“%1”的格式。无法卸载
+UninstallUnknownEntry=卸载日志中遇到一个未知条目 (%1)
+ConfirmUninstall=您确认要完全移除 %1 及其所有组件吗？
+UninstallOnlyOnWin64=仅允许在 64 位 Windows 中卸载此程序。
+OnlyAdminCanUninstall=仅使用管理员权限的用户能完成此卸载。
+UninstallStatusLabel=正在从您的电脑中移除 %1，请稍候。
+UninstalledAll=已顺利从您的电脑中移除 %1。
+UninstalledMost=%1 卸载完成。%n%n有部分内容未能被删除，但您可以手动删除它们。
+UninstalledAndNeedsRestart=为完成 %1 的卸载，需要重启您的电脑。%n%n立即重启电脑吗？
+UninstallDataCorrupted=文件“%1”已损坏。无法卸载
+
+; *** 卸载状态消息
+ConfirmDeleteSharedFileTitle=删除共享的文件吗？
+ConfirmDeleteSharedFile2=系统表示下列共享的文件已不有其他程序使用。您希望卸载程序删除这些共享的文件吗？%n%n如果删除这些文件，但仍有程序在使用这些文件，则这些程序可能出现异常。如果您不能确定，请选择“否”，在系统中保留这些文件以免引发问题。
+SharedFileNameLabel=文件名：
+SharedFileLocationLabel=位置：
+WizardUninstalling=卸载状态
+StatusUninstalling=正在卸载 %1...
+
+; *** Shutdown block reasons
+ShutdownBlockReasonInstallingApp=正在安装 %1。
+ShutdownBlockReasonUninstallingApp=正在卸载 %1。
+
+; The custom messages below aren't used by Setup itself, but if you make
+; use of them in your scripts, you'll want to translate them.
+
+[CustomMessages]
+
+NameAndVersion=%1 版本 %2
+AdditionalIcons=附加快捷方式：
+CreateDesktopIcon=创建桌面快捷方式(&D)
+CreateQuickLaunchIcon=创建快速启动栏快捷方式(&Q)
+ProgramOnTheWeb=%1 网站
+UninstallProgram=卸载 %1
+LaunchProgram=运行 %1
+AssocFileExtension=将 %2 文件扩展名与 %1 建立关联(&A)
+AssocingFileExtension=正在将 %2 文件扩展名与 %1 建立关联...
+AutoStartProgramGroupDescription=启动：
+AutoStartProgram=自动启动 %1
+AddonHostProgramNotFound=您选择的文件夹中无法找到 %1。%n%n您要继续吗？

LanMountainDesktop/installer/LanMountainDesktop.iss

@@ -1,6 +1,8 @@
-#define MyAppName "LanMountainDesktop"
+#define MyAppName "LanMountainDesktop"
 #define MyAppPublisher "LanMountainDesktop Team"
 #define MyAppExeName "LanMountainDesktop.exe"
+#define MyAppId "{{5A058B0D-F95D-4A18-B9A0-93F843655DDB}"
+#define MyAppRegistryId "{5A058B0D-F95D-4A18-B9A0-93F843655DDB}"
 
 #ifndef MyAppVersion
   #define MyAppVersion "0.0.0"
@@ -19,13 +21,16 @@
 #endif
 
 [Setup]
-AppId={{5A058B0D-F95D-4A18-B9A0-93F843655DDB}
+AppId={#MyAppId}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}
 AppPublisher={#MyAppPublisher}
 DefaultDirName={autopf}\{#MyAppName}
 DisableDirPage=no
 UsePreviousAppDir=no
+ShowLanguageDialog=yes
+UsePreviousLanguage=no
+LanguageDetectionMethod=uilanguage
 DefaultGroupName={#MyAppName}
 UninstallDisplayIcon={app}\{#MyAppExeName}
 OutputDir={#MyOutputDir}
@@ -34,6 +39,9 @@ Compression=lzma2/ultra64
 SolidCompression=yes
 WizardStyle=modern
 PrivilegesRequired=admin
+CloseApplications=yes
+CloseApplicationsFilter={#MyAppExeName}
+RestartApplications=no
 DisableProgramGroupPage=yes
 
 #if MyAppArch == "x64"
@@ -47,10 +55,55 @@ ArchitecturesAllowed=x86compatible
 
 [Languages]
 Name: "english"; MessagesFile: "compiler:Default.isl"
+Name: "chinesesimplified"; MessagesFile: "{#SourcePath}\ChineseSimplified.isl"
+
+[CustomMessages]
+english.StartupTaskDescription=Launch LanMountainDesktop when you sign in to Windows
+chinesesimplified.StartupTaskDescription=登录 Windows 时启动 LanMountainDesktop
+english.WebView2MissingMessage=Microsoft Edge WebView2 Runtime is required for the browser component.
+chinesesimplified.WebView2MissingMessage=浏览器组件需要 Microsoft Edge WebView2 Runtime。
+english.WebView2MissingAction=Click "Yes" to open the official download page. Install it first, then run this installer again.
+chinesesimplified.WebView2MissingAction=单击“是”打开官方下载页面。请先完成安装，然后重新运行此安装程序。
+english.WebView2OpenFailedMessage=Unable to open the download page automatically.
+chinesesimplified.WebView2OpenFailedMessage=无法自动打开下载页面。
+english.WebView2OpenFailedAction=Please open this URL manually:
+chinesesimplified.WebView2OpenFailedAction=请手动打开以下链接：
+english.UpgradePageCaption=Upgrade Existing Installation
+chinesesimplified.UpgradePageCaption=升级现有安装
+english.UpgradePageDescription=LanMountainDesktop is already installed on this computer. Choose how to upgrade it.
+chinesesimplified.UpgradePageDescription=此计算机上已安装 LanMountainDesktop。请选择升级方式。
+english.UpgradeDetectedVersionLabel=Detected version:
+chinesesimplified.UpgradeDetectedVersionLabel=检测到的版本：
+english.UpgradeCurrentLocationLabel=Current location:
+chinesesimplified.UpgradeCurrentLocationLabel=当前安装位置：
+english.UpgradePageSubCaption=Choose "Upgrade existing installation" to reuse the current location, or choose "Change installation location and migrate installation" to move the app without leaving a duplicate copy behind.
+chinesesimplified.UpgradePageSubCaption=选择“升级现有安装”可复用当前安装位置；选择“更改安装位置并迁移安装”可移动应用，同时避免留下重复安装。
+english.UpgradeOptionInPlace=Upgrade existing installation
+chinesesimplified.UpgradeOptionInPlace=升级现有安装
+english.UpgradeOptionRelocate=Change installation location and migrate installation
+chinesesimplified.UpgradeOptionRelocate=更改安装位置并迁移安装
+english.UpgradeUnknownVersion=Unknown
+chinesesimplified.UpgradeUnknownVersion=未知
+english.UpgradeCleanupMissingUninstaller=Setup found an existing installation, but its uninstaller is unavailable. Please uninstall the current version manually and run this installer again.
+chinesesimplified.UpgradeCleanupMissingUninstaller=安装程序发现了现有安装，但无法找到它的卸载程序。请先手动卸载当前版本，再重新运行此安装程序。
+english.UpgradeCleanupFailedPrefix=Setup could not remove the existing installation automatically. Error code:
+chinesesimplified.UpgradeCleanupFailedPrefix=安装程序无法自动移除现有安装。错误代码：
+english.UpgradeCleanupFailedSuffix=Please close LanMountainDesktop, uninstall the current version manually, and then run this installer again.
+chinesesimplified.UpgradeCleanupFailedSuffix=请关闭 LanMountainDesktop，手动卸载当前版本，然后重新运行此安装程序。
 
 [Tasks]
 Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"
-Name: "startup"; Description: "Launch LanMountainDesktop when you sign in to Windows"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+Name: "startup"; Description: "{cm:StartupTaskDescription}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+
+[Dirs]
+Name: "{app}\log"; Permissions: users-modify
+
+[InstallDelete]
+Type: files; Name: "{app}\LanMontainDesktop.exe"
+Type: files; Name: "{app}\LanMontainDesktop.dll"
+Type: files; Name: "{app}\LanMontainDesktop.deps.json"
+Type: files; Name: "{app}\LanMontainDesktop.runtimeconfig.json"
+Type: files; Name: "{app}\LanMontainDesktop.pdb"
 
 [Files]
 Source: "{#PublishDir}\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
@@ -67,12 +120,309 @@ Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChang
 
 [Code]
 const
+  UninstallRegSubkey = 'Software\Microsoft\Windows\CurrentVersion\Uninstall\{#MyAppRegistryId}_is1';
   WebView2RuntimeKeyPath = 'SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}';
   WebView2RuntimeDownloadUrl = 'https://go.microsoft.com/fwlink/p/?LinkId=2124703';
+  UpgradeChoiceInPlace = 0;
+  UpgradeChoiceRelocate = 1;
+
+var
+  UpgradeModePage: TInputOptionWizardPage;
+  ExistingInstallFound: Boolean;
+  ExistingInstallPath: String;
+  ExistingInstallVersion: String;
+  ExistingUninstallCommand: String;
+  ExistingInstallWas64Bit: Boolean;
+  ExistingInstallIsPerUser: Boolean;
+  ExistingInstallRemoved: Boolean;
+
+function NormalizePathValue(const Value: String): String;
+begin
+  Result := RemoveBackslashUnlessRoot(Trim(Value));
+end;
+
+function CombinePath(const BasePath: String; const ChildName: String): String;
+begin
+  if BasePath = '' then
+  begin
+    Result := ChildName;
+  end
+  else
+  begin
+    Result := NormalizePathValue(BasePath) + '\' + ChildName;
+  end;
+end;
+
+function SamePath(const LeftPath: String; const RightPath: String): Boolean;
+begin
+  Result := CompareText(NormalizePathValue(LeftPath), NormalizePathValue(RightPath)) = 0;
+end;
+
+function ExtractExecutableFromCommand(const CommandLine: String): String;
+var
+  CommandText: String;
+  ClosingQuotePos: Integer;
+  ExePos: Integer;
+begin
+  Result := '';
+  CommandText := Trim(CommandLine);
+  if CommandText = '' then
+  begin
+    exit;
+  end;
+
+  if CommandText[1] = '"' then
+  begin
+    Delete(CommandText, 1, 1);
+    ClosingQuotePos := Pos('"', CommandText);
+    if ClosingQuotePos > 0 then
+    begin
+      Result := Copy(CommandText, 1, ClosingQuotePos - 1);
+    end
+    else
+    begin
+      Result := CommandText;
+    end;
+  end
+  else
+  begin
+    ExePos := Pos('.exe', LowerCase(CommandText));
+    if ExePos > 0 then
+    begin
+      Result := Copy(CommandText, 1, ExePos + 3);
+    end
+    else
+    begin
+      Result := CommandText;
+    end;
+  end;
+
+  Result := NormalizePathValue(RemoveQuotes(Result));
+end;
+
+function GetExistingExecutablePath(): String;
+begin
+  if ExistingInstallPath = '' then
+  begin
+    Result := '';
+  end
+  else
+  begin
+    Result := CombinePath(ExistingInstallPath, '{#MyAppExeName}');
+  end;
+end;
+
+function GetDefaultInstallPath(): String;
+begin
+  Result := NormalizePathValue(ExpandConstant('{autopf}\{#MyAppName}'));
+end;
+
+function GetExistingInstallVersionText(): String;
+begin
+  Result := Trim(ExistingInstallVersion);
+  if Result = '' then
+  begin
+    Result := CustomMessage('UpgradeUnknownVersion');
+  end;
+end;
+
+procedure ShowUpgradeCleanupError(const MessageText: String);
+begin
+  Log(MessageText);
+  if not WizardSilent then
+  begin
+    MsgBox(MessageText, mbError, MB_OK);
+  end;
+end;
+
+function TryLoadExistingInstallation(
+  const RootKey: Integer;
+  const Is64BitView: Boolean;
+  const IsPerUser: Boolean): Boolean;
+var
+  InstallLocation: String;
+  AppPath: String;
+  UninstallString: String;
+  DisplayVersion: String;
+  ResolvedPath: String;
+begin
+  Result := False;
+  InstallLocation := '';
+  AppPath := '';
+  UninstallString := '';
+  DisplayVersion := '';
+
+  if not RegKeyExists(RootKey, UninstallRegSubkey) then
+  begin
+    exit;
+  end;
+
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'InstallLocation', InstallLocation);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'Inno Setup: App Path', AppPath);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'UninstallString', UninstallString);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'DisplayVersion', DisplayVersion);
+
+  ResolvedPath := NormalizePathValue(InstallLocation);
+  if ResolvedPath = '' then
+  begin
+    ResolvedPath := NormalizePathValue(AppPath);
+  end;
+  if (ResolvedPath = '') and (UninstallString <> '') then
+  begin
+    ResolvedPath := NormalizePathValue(ExtractFileDir(ExtractExecutableFromCommand(UninstallString)));
+  end;
+
+  if (ResolvedPath = '') or
+     (not DirExists(ResolvedPath)) or
+     (not FileExists(CombinePath(ResolvedPath, '{#MyAppExeName}'))) then
+  begin
+    exit;
+  end;
+
+  ExistingInstallFound := True;
+  ExistingInstallPath := ResolvedPath;
+  ExistingInstallVersion := Trim(DisplayVersion);
+  ExistingUninstallCommand := Trim(UninstallString);
+  ExistingInstallWas64Bit := Is64BitView;
+  ExistingInstallIsPerUser := IsPerUser;
+  Result := True;
+end;
+
+procedure DetectExistingInstallation;
+begin
+  ExistingInstallFound := False;
+  ExistingInstallPath := '';
+  ExistingInstallVersion := '';
+  ExistingUninstallCommand := '';
+  ExistingInstallWas64Bit := False;
+  ExistingInstallIsPerUser := False;
+  ExistingInstallRemoved := False;
+
+  if IsWin64 then
+  begin
+    if TryLoadExistingInstallation(HKLM64, True, False) then
+    begin
+      exit;
+    end;
+    if TryLoadExistingInstallation(HKCU64, True, True) then
+    begin
+      exit;
+    end;
+  end;
+
+  if TryLoadExistingInstallation(HKLM32, False, False) then
+  begin
+    exit;
+  end;
+
+  TryLoadExistingInstallation(HKCU32, False, True);
+end;
+
+function SelectedUpgradeChoice(): Integer;
+begin
+  if UpgradeModePage <> nil then
+  begin
+    Result := UpgradeModePage.SelectedValueIndex;
+  end
+  else
+  begin
+    Result := UpgradeChoiceInPlace;
+  end;
+end;
+
+procedure ApplySelectedInstallDirectory;
+var
+  CurrentDir: String;
+begin
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  if SelectedUpgradeChoice() = UpgradeChoiceInPlace then
+  begin
+    WizardForm.DirEdit.Text := ExistingInstallPath;
+    exit;
+  end;
+
+  CurrentDir := NormalizePathValue(WizardDirValue);
+  if (CurrentDir = '') or SamePath(CurrentDir, GetDefaultInstallPath()) then
+  begin
+    WizardForm.DirEdit.Text := ExistingInstallPath;
+  end;
+end;
+
+function GetSelectedInstallPath(): String;
+begin
+  Result := NormalizePathValue(ExpandConstant('{app}'));
+  if Result = '' then
+  begin
+    Result := NormalizePathValue(WizardDirValue);
+  end;
+  if Result = '' then
+  begin
+    Result := ExistingInstallPath;
+  end;
+end;
+
+function ExistingInstallRequiresCleanup(): Boolean;
+var
+  TargetPath: String;
+begin
+  Result := False;
+  if not ExistingInstallFound or ExistingInstallRemoved then
+  begin
+    exit;
+  end;
+
+  TargetPath := GetSelectedInstallPath();
+  Result := ExistingInstallIsPerUser or
+            (not SamePath(TargetPath, ExistingInstallPath)) or
+            (ExistingInstallWas64Bit <> Is64BitInstallMode);
+end;
+
+function RemoveExistingInstallation(): Boolean;
+var
+  UninstallerPath: String;
+  ResultCode: Integer;
+begin
+  Result := True;
+
+  if not ExistingInstallRequiresCleanup() then
+  begin
+    exit;
+  end;
+
+  UninstallerPath := ExtractExecutableFromCommand(ExistingUninstallCommand);
+  if (UninstallerPath = '') or (not FileExists(UninstallerPath)) then
+  begin
+    ShowUpgradeCleanupError(CustomMessage('UpgradeCleanupMissingUninstaller'));
+    Result := False;
+    exit;
+  end;
+
+  ResultCode := -1;
+  if not Exec(
+    UninstallerPath,
+    '/VERYSILENT /SUPPRESSMSGBOXES /NORESTART',
+    ExtractFileDir(UninstallerPath),
+    SW_SHOWNORMAL,
+    ewWaitUntilTerminated,
+    ResultCode) or (ResultCode <> 0) then
+  begin
+    ShowUpgradeCleanupError(
+      CustomMessage('UpgradeCleanupFailedPrefix') + ' ' + IntToStr(ResultCode) + '. ' +
+      CustomMessage('UpgradeCleanupFailedSuffix'));
+    Result := False;
+    exit;
+  end;
+
+  ExistingInstallRemoved := True;
+end;
 
 function IsWebView2RuntimeInstalled(): Boolean;
 var
-  VersionValue: string;
+  VersionValue: String;
 begin
   Result :=
     RegQueryStringValue(HKLM64, WebView2RuntimeKeyPath, 'pv', VersionValue) or
@@ -92,16 +442,16 @@ begin
   end;
 
   if MsgBox(
-    'Microsoft Edge WebView2 Runtime is required for the browser component.'#13#10#13#10 +
-    'Click "Yes" to open the official download page. Install it first, then run this installer again.',
+    CustomMessage('WebView2MissingMessage') + #13#10#13#10 +
+    CustomMessage('WebView2MissingAction'),
     mbConfirmation,
     MB_YESNO) = IDYES then
   begin
     if not ShellExec('open', WebView2RuntimeDownloadUrl, '', '', SW_SHOWNORMAL, ewNoWait, ErrorCode) then
     begin
       MsgBox(
-        'Unable to open the download page automatically.'#13#10 +
-        'Please open this URL manually:'#13#10 + WebView2RuntimeDownloadUrl,
+        CustomMessage('WebView2OpenFailedMessage') + #13#10 +
+        CustomMessage('WebView2OpenFailedAction') + #13#10 + WebView2RuntimeDownloadUrl,
         mbError,
         MB_OK);
     end;
@@ -109,3 +459,84 @@ begin
 
   Result := False;
 end;
+
+procedure InitializeWizard;
+var
+  DetailsText: String;
+begin
+  DetectExistingInstallation;
+
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  DetailsText :=
+    CustomMessage('UpgradeDetectedVersionLabel') + ' ' + GetExistingInstallVersionText() + #13#10 +
+    CustomMessage('UpgradeCurrentLocationLabel') + ' ' + ExistingInstallPath + #13#10#13#10 +
+    CustomMessage('UpgradePageSubCaption');
+
+  UpgradeModePage := CreateInputOptionPage(
+    wpWelcome,
+    CustomMessage('UpgradePageCaption'),
+    CustomMessage('UpgradePageDescription'),
+    DetailsText,
+    True,
+    False);
+  UpgradeModePage.Add(CustomMessage('UpgradeOptionInPlace'));
+  UpgradeModePage.Add(CustomMessage('UpgradeOptionRelocate'));
+  UpgradeModePage.SelectedValueIndex := UpgradeChoiceInPlace;
+end;
+
+function NextButtonClick(CurPageID: Integer): Boolean;
+begin
+  Result := True;
+
+  if (UpgradeModePage <> nil) and (CurPageID = UpgradeModePage.ID) then
+  begin
+    ApplySelectedInstallDirectory;
+  end;
+end;
+
+function ShouldSkipPage(PageID: Integer): Boolean;
+begin
+  Result := False;
+
+  if (UpgradeModePage <> nil) and (PageID = UpgradeModePage.ID) then
+  begin
+    Result := not ExistingInstallFound;
+    exit;
+  end;
+
+  if PageID = wpSelectDir then
+  begin
+    Result := ExistingInstallFound and (SelectedUpgradeChoice() = UpgradeChoiceInPlace);
+  end;
+end;
+
+procedure RegisterExtraCloseApplicationsResources;
+var
+  ExistingExecutablePath: String;
+begin
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  ExistingExecutablePath := GetExistingExecutablePath();
+  if (ExistingExecutablePath <> '') and FileExists(ExistingExecutablePath) then
+  begin
+    RegisterExtraCloseApplicationsResource(False, ExistingExecutablePath);
+  end;
+end;
+
+procedure CurStepChanged(CurStep: TSetupStep);
+begin
+  if CurStep = ssInstall then
+  begin
+    if not RemoveExistingInstallation() then
+    begin
+      Abort;
+    end;
+  end;
+end;

LanMountainDesktop/plugins/MainWindow.PluginMarketSettingsLocalization.cs

@@ -0,0 +1,9 @@
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private void ApplyPluginMarketSettingsLocalization()
+    {
+        PluginMarketSettingsPanel.RefreshFromRuntime();
+    }
+}

LanMountainDesktop/plugins/MainWindow.PluginSettingsControls.cs

@@ -9,6 +9,7 @@ public partial class MainWindow
     internal TextBlock PluginSystemDescriptionTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemDescriptionTextBlock")!;
     internal TextBlock PluginSystemStatusTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemStatusTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander InstalledPluginsSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("InstalledPluginsSettingsExpander")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander ImportPluginPackageSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("ImportPluginPackageSettingsExpander")!;
     internal TextBlock PluginRestartHintTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginRestartHintTextBlock")!;
     internal TextBlock PluginCatalogEmptyTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginCatalogEmptyTextBlock")!;
 }

LanMountainDesktop/plugins/MainWindow.PluginSettingsHost.cs

@@ -39,7 +39,7 @@ public partial class MainWindow
             .GroupBy(contribution => contribution.Plugin.Manifest.Id, StringComparer.OrdinalIgnoreCase)
             .ToDictionary(group => group.Key, group => group.Count(), StringComparer.OrdinalIgnoreCase);
 
-        var insertIndex = SettingsNavView.MenuItems.IndexOf(SettingsNavPluginsItem) + 1;
+        var insertIndex = SettingsNavView.MenuItems.IndexOf(SettingsNavPluginMarketItem) + 1;
         foreach (var contribution in contributions)
         {
             var tag = BuildPluginSettingsTag(contribution);

LanMountainDesktop/plugins/MainWindow.PluginSettingsLocalization.cs

@@ -18,10 +18,14 @@ public partial class MainWindow
         InstalledPluginsSettingsExpander.Header = L("settings.plugins.installed_header", "Installed Plugins");
         InstalledPluginsSettingsExpander.Description = L(
             "settings.plugins.installed_desc",
-            "Enable or disable plugins here. Detailed plugin settings appear as separate settings pages.");
+            "Review installed plugins and remove them here.");
+        ImportPluginPackageSettingsExpander.Header = L("settings.plugins.import_header", "Install From Package");
+        ImportPluginPackageSettingsExpander.Description = L(
+            "settings.plugins.import_desc",
+            "Open a .laapp package and stage it into the local plugin directory.");
         PluginRestartHintTextBlock.Text = L(
             "settings.plugins.restart_hint",
-            "Plugin enable state changes take effect after restarting the app.");
+            "Plugin installation and deletion changes take effect after restarting the app.");
         PluginCatalogEmptyTextBlock.Text = L("settings.plugins.empty", "No plugins found.");
         PluginSettingsPanel.RefreshFromRuntime();
     }

LanMountainDesktop/plugins/PluginLoader.cs

@@ -10,6 +10,7 @@ using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
+using LanMountainDesktop.Services;
 using LanMountainDesktop.PluginSdk;
 
 namespace LanMountainDesktop.Plugins;
@@ -346,6 +347,9 @@ public sealed class PluginLoader
     private string ExtractPackage(string packagePath, string pluginsRootDirectory)
     {
         var extractionDirectory = GetPackageExtractionDirectory(pluginsRootDirectory, packagePath);
+        AppLogger.Info(
+            "PluginLoader",
+            $"Extracting package '{packagePath}' to '{extractionDirectory}'.");
         RecreateDirectory(extractionDirectory);
         ZipFile.ExtractToDirectory(packagePath, extractionDirectory, overwriteFiles: true);
         return extractionDirectory;
@@ -381,7 +385,7 @@ public sealed class PluginLoader
     {
         if (Directory.Exists(directoryPath))
         {
-            Directory.Delete(directoryPath, recursive: true);
+            FileOperationRetryHelper.DeleteDirectoryWithRetry(directoryPath, recursive: true, "PluginLoader");
         }
 
         Directory.CreateDirectory(directoryPath);

LanMountainDesktop/plugins/PluginMarketIconService.cs

@@ -0,0 +1,47 @@
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using Avalonia.Media.Imaging;
+
+namespace LanMountainDesktop.Views.SettingsPages;
+
+internal sealed class AirAppMarketIconService : IDisposable
+{
+    private readonly HttpClient _httpClient;
+
+    public AirAppMarketIconService()
+    {
+        _httpClient = new HttpClient
+        {
+            Timeout = TimeSpan.FromSeconds(20)
+        };
+        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-PluginMarketplace/1.0");
+    }
+
+    public async Task<Bitmap> LoadAsync(
+        AirAppMarketPluginEntry plugin,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(plugin);
+
+        if (AirAppMarketDefaults.TryResolveWorkspaceFile(plugin.IconUrl, out var localIconPath))
+        {
+            return new Bitmap(localIconPath);
+        }
+
+        using var response = await _httpClient.GetAsync(plugin.IconUrl, cancellationToken);
+        response.EnsureSuccessStatusCode();
+        await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken);
+        using var memory = new MemoryStream();
+        await stream.CopyToAsync(memory, cancellationToken);
+        memory.Position = 0;
+        return new Bitmap(memory);
+    }
+
+    public void Dispose()
+    {
+        _httpClient.Dispose();
+    }
+}

LanMountainDesktop/plugins/PluginMarketInstallService.cs

@@ -14,6 +14,7 @@ internal sealed class AirAppMarketInstallService : IDisposable
 {
     private readonly PluginRuntimeService _runtime;
     private readonly HttpClient _httpClient;
+    private readonly ResumableDownloadService _downloadService;
     private readonly AirAppMarketReleaseResolverService _releaseResolverService;
     private readonly string _downloadsDirectory;
 
@@ -26,6 +27,7 @@ internal sealed class AirAppMarketInstallService : IDisposable
             Timeout = TimeSpan.FromMinutes(2)
         };
         _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-PluginMarketplace/1.0");
+        _downloadService = new ResumableDownloadService(_httpClient);
         _releaseResolverService = new AirAppMarketReleaseResolverService(_httpClient);
     }
 
@@ -42,25 +44,37 @@ internal sealed class AirAppMarketInstallService : IDisposable
 
         try
         {
+            AppLogger.Info(
+                "PluginMarket",
+                $"Starting install. PluginId='{plugin.Id}'; Version='{plugin.Version}'; DownloadPath='{downloadPath}'.");
             var resolvedDownloadUrl = await _releaseResolverService.ResolveDownloadUrlAsync(plugin, cancellationToken);
+            AppLogger.Info(
+                "PluginMarket",
+                $"Resolved download url for '{plugin.Id}' to '{resolvedDownloadUrl}'.");
 
             if (AirAppMarketDefaults.TryResolveWorkspaceFile(resolvedDownloadUrl, out var localPackagePath))
             {
-                await using var sourceStream = File.OpenRead(localPackagePath);
-                await using var destinationStream = File.Create(downloadPath);
-                await sourceStream.CopyToAsync(destinationStream, cancellationToken);
+                var localCopyResult = await _downloadService.DownloadAsync(
+                    localPackagePath,
+                    downloadPath,
+                    new DownloadOptions(ExpectedSizeBytes: plugin.PackageSizeBytes),
+                    cancellationToken: cancellationToken);
+                if (!localCopyResult.Success)
+                {
+                    return new AirAppMarketInstallResult(false, null, localCopyResult.ErrorMessage);
+                }
             }
             else
             {
-                using var response = await _httpClient.GetAsync(
+                var downloadResult = await _downloadService.DownloadAsync(
                     resolvedDownloadUrl,
-                    HttpCompletionOption.ResponseHeadersRead,
-                    cancellationToken);
-                response.EnsureSuccessStatusCode();
-
-                await using var responseStream = await response.Content.ReadAsStreamAsync(cancellationToken);
-                await using var destinationStream = File.Create(downloadPath);
-                await responseStream.CopyToAsync(destinationStream, cancellationToken);
+                    downloadPath,
+                    new DownloadOptions(ExpectedSizeBytes: plugin.PackageSizeBytes),
+                    cancellationToken: cancellationToken);
+                if (!downloadResult.Success)
+                {
+                    return new AirAppMarketInstallResult(false, null, downloadResult.ErrorMessage);
+                }
             }
 
             await using var hashStream = File.OpenRead(downloadPath);
@@ -76,14 +90,24 @@ internal sealed class AirAppMarketInstallService : IDisposable
             }
 
             var manifest = _runtime.InstallPluginPackage(downloadPath);
+            AppLogger.Info(
+                "PluginMarket",
+                $"Install staged successfully. PluginId='{manifest.Id}'; InstalledName='{manifest.Name}'; PackagePath='{downloadPath}'.");
             return new AirAppMarketInstallResult(true, manifest, null);
         }
         catch (OperationCanceledException)
         {
+            AppLogger.Warn(
+                "PluginMarket",
+                $"Install canceled. PluginId='{plugin.Id}'; Version='{plugin.Version}'; DownloadPath='{downloadPath}'.");
             throw;
         }
         catch (Exception ex)
         {
+            AppLogger.Error(
+                "PluginMarket",
+                $"Install failed. PluginId='{plugin.Id}'; Version='{plugin.Version}'; DownloadPath='{downloadPath}'.",
+                ex);
             return new AirAppMarketInstallResult(false, null, ex.Message);
         }
     }

LanMountainDesktop/plugins/PluginMarketSettingsPage.axaml

@@ -0,0 +1,25 @@
+<UserControl 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"
+             mc:Ignorable="d"
+             d:DesignWidth="960"
+             d:DesignHeight="1000"
+             x:Class="LanMountainDesktop.Views.SettingsPages.PluginMarketSettingsPage">
+
+    <StackPanel x:Name="PluginMarketPanel"
+                Spacing="16">
+        <TextBlock x:Name="PluginMarketPanelTitleTextBlock"
+                   FontSize="24"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                   Text="Plugin Market" />
+
+        <TextBlock x:Name="PluginMarketPanelSubtitleTextBlock"
+                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   Text="Browse plugins from the official LanAirApp source and stage installs." />
+
+        <ContentControl x:Name="PluginMarketContentHost" />
+    </StackPanel>
+</UserControl>

LanMountainDesktop/plugins/PluginMarketSettingsPage.axaml.cs

@@ -0,0 +1,71 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Media;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views.SettingsPages;
+
+public partial class PluginMarketSettingsPage : UserControl
+{
+    private readonly AppSettingsService _appSettingsService = new();
+    private readonly LocalizationService _localizationService = new();
+    private PluginMarketEmbeddedView? _pluginMarketView;
+
+    public PluginMarketSettingsPage()
+    {
+        InitializeComponent();
+        AttachedToVisualTree += (_, _) => RefreshFromRuntime();
+    }
+
+    public void RefreshFromRuntime()
+    {
+        PluginMarketPanelTitleTextBlock.Text = L("settings.plugin_market.title", "Plugin Market");
+        PluginMarketPanelSubtitleTextBlock.Text = L(
+            "settings.plugin_market.subtitle",
+            "Browse plugins from the official LanAirApp source and stage installs.");
+
+        var runtime = (Application.Current as App)?.PluginRuntimeService;
+        if (runtime is null)
+        {
+            PluginMarketContentHost.Content = CreateUnavailableState();
+            return;
+        }
+
+        if (_pluginMarketView is null)
+        {
+            _pluginMarketView = new PluginMarketEmbeddedView(runtime);
+        }
+
+        _pluginMarketView.RefreshLocalization();
+        _pluginMarketView.RefreshInstalledSnapshot();
+
+        if (!ReferenceEquals(PluginMarketContentHost.Content, _pluginMarketView))
+        {
+            PluginMarketContentHost.Content = _pluginMarketView;
+        }
+    }
+
+    private Control CreateUnavailableState()
+    {
+        return new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#14000000")),
+            CornerRadius = new CornerRadius(16),
+            Padding = new Thickness(16),
+            Child = new TextBlock
+            {
+                Text = L(
+                    "settings.plugin_market.unavailable",
+                    "Plugin runtime is not available, so the official market cannot be opened right now."),
+                TextWrapping = TextWrapping.Wrap,
+                Foreground = PluginMarketPanelSubtitleTextBlock.Foreground
+            }
+        };
+    }
+
+    private string L(string key, string fallback)
+    {
+        var snapshot = _appSettingsService.Load();
+        return _localizationService.GetString(snapshot.LanguageCode, key, fallback);
+    }
+}

LanMountainDesktop/plugins/PluginRuntimeService.cs

@@ -5,6 +5,7 @@ using System.IO;
 using System.IO.Compression;
 using System.Linq;
 using System.Reflection;
+using System.Text.Json;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
@@ -16,6 +17,8 @@ namespace LanMountainDesktop.Services;
 
 public sealed class PluginRuntimeService : IDisposable
 {
+    private const string PendingDeletionFileName = ".pending-plugin-deletions.json";
+
     private readonly PluginLoader _loader;
     private readonly AppSettingsService _appSettingsService = new();
     private readonly IServiceProvider _hostServices;
@@ -25,6 +28,7 @@ public sealed class PluginRuntimeService : IDisposable
     private readonly List<PluginCatalogEntry> _catalog = [];
     private readonly List<PluginSettingsPageContribution> _settingsPages = [];
     private readonly List<PluginDesktopComponentContribution> _desktopComponents = [];
+    private readonly object _packageMutationGate = new();
 
     public PluginRuntimeService()
     {
@@ -49,6 +53,7 @@ public sealed class PluginRuntimeService : IDisposable
     public void LoadInstalledPlugins()
     {
         Directory.CreateDirectory(PluginsDirectory);
+        ApplyPendingPluginDeletions();
         UnloadInstalledPlugins();
 
         var disabledPluginIds = GetDisabledPluginIds();
@@ -170,6 +175,7 @@ public sealed class PluginRuntimeService : IDisposable
             .OrderBy(id => id, StringComparer.OrdinalIgnoreCase)
             .ToList();
         _appSettingsService.Save(snapshot);
+        PendingRestartStateService.SetPending(PendingRestartStateService.PluginCatalogReason, true);
 
         for (var i = 0; i < _catalog.Count; i++)
         {
@@ -184,7 +190,50 @@ public sealed class PluginRuntimeService : IDisposable
 
     public PluginManifest InstallPluginPackage(string packagePath)
     {
-        return InstallPluginPackageCore(packagePath).Manifest;
+        lock (_packageMutationGate)
+        {
+            return InstallPluginPackageCore(packagePath).Manifest;
+        }
+    }
+
+    public bool DeleteInstalledPlugin(string pluginId)
+    {
+        lock (_packageMutationGate)
+        {
+            return DeleteInstalledPluginCore(pluginId);
+        }
+    }
+
+    private bool DeleteInstalledPluginCore(string pluginId)
+    {
+        if (string.IsNullOrWhiteSpace(pluginId))
+        {
+            return false;
+        }
+
+        var entry = _catalog.FirstOrDefault(candidate =>
+            string.Equals(candidate.Manifest.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+        if (entry is null)
+        {
+            return false;
+        }
+
+        var targetPath = ResolvePluginRemovalTargetPath(entry);
+        if (string.IsNullOrWhiteSpace(targetPath))
+        {
+            return false;
+        }
+
+        var fullTargetPath = Path.GetFullPath(targetPath);
+        if (!TryDeletePluginTarget(fullTargetPath))
+        {
+            RegisterPendingPluginDeletion(fullTargetPath);
+        }
+
+        RemovePluginFromSnapshot(pluginId);
+        RemovePluginFromCatalog(pluginId);
+        PendingRestartStateService.SetPending(PendingRestartStateService.PluginCatalogReason, true);
+        return true;
     }
 
     internal IReadOnlyList<InstalledPluginInfo> GetInstalledPluginsSnapshot()
@@ -219,16 +268,22 @@ public sealed class PluginRuntimeService : IDisposable
         Directory.CreateDirectory(PluginsDirectory);
 
         var manifest = ReadManifestFromPackage(fullPackagePath);
+        AppLogger.Info(
+            "PluginRuntime",
+            $"Installing package. PluginId='{manifest.Id}'; Source='{fullPackagePath}'; PluginsDirectory='{PluginsDirectory}'.");
         var replacedExisting = RemoveExistingPluginPackages(manifest.Id, fullPackagePath);
 
         var destinationPath = Path.Combine(PluginsDirectory, BuildInstalledPackageFileName(manifest.Id));
         if (!string.Equals(fullPackagePath, Path.GetFullPath(destinationPath), StringComparison.OrdinalIgnoreCase))
         {
-            File.Copy(fullPackagePath, destinationPath, overwrite: true);
+            FileOperationRetryHelper.CopyWithRetry(fullPackagePath, destinationPath, overwrite: true, "PluginRuntime");
         }
 
         UpdateCatalogAfterPackageInstall(manifest, destinationPath);
         PendingRestartStateService.SetPending(PendingRestartStateService.PluginCatalogReason, true);
+        AppLogger.Info(
+            "PluginRuntime",
+            $"Package staged. PluginId='{manifest.Id}'; Destination='{destinationPath}'; ReplacedExisting={replacedExisting}.");
 
         return new PluginPackageInstallResult(manifest, replacedExisting, RestartRequired: true);
     }
@@ -349,7 +404,7 @@ public sealed class PluginRuntimeService : IDisposable
                     continue;
                 }
 
-                File.Delete(existingPackagePath);
+                FileOperationRetryHelper.DeleteFileWithRetry(existingPackagePath, "PluginRuntime");
                 replacedExisting = true;
             }
             catch
@@ -445,6 +500,150 @@ public sealed class PluginRuntimeService : IDisposable
         }
     }
 
+    private void ApplyPendingPluginDeletions()
+    {
+        var pendingPaths = ReadPendingPluginDeletions();
+        if (pendingPaths.Count == 0)
+        {
+            return;
+        }
+
+        var remainingPaths = new List<string>();
+        foreach (var path in pendingPaths)
+        {
+            if (!TryDeletePluginTarget(path))
+            {
+                remainingPaths.Add(path);
+            }
+        }
+
+        SavePendingPluginDeletions(remainingPaths);
+    }
+
+    private string ResolvePluginRemovalTargetPath(PluginCatalogEntry entry)
+    {
+        if (entry.IsPackage)
+        {
+            return entry.SourcePath;
+        }
+
+        var fullSourcePath = Path.GetFullPath(entry.SourcePath);
+        if (File.Exists(fullSourcePath) &&
+            string.Equals(Path.GetFileName(fullSourcePath), "plugin.json", StringComparison.OrdinalIgnoreCase))
+        {
+            return Path.GetDirectoryName(fullSourcePath) ?? fullSourcePath;
+        }
+
+        return fullSourcePath;
+    }
+
+    private static bool TryDeletePluginTarget(string targetPath)
+    {
+        try
+        {
+            if (File.Exists(targetPath))
+            {
+                File.Delete(targetPath);
+            }
+            else if (Directory.Exists(targetPath))
+            {
+                Directory.Delete(targetPath, recursive: true);
+            }
+
+            return !File.Exists(targetPath) && !Directory.Exists(targetPath);
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    private void RegisterPendingPluginDeletion(string targetPath)
+    {
+        var pendingPaths = ReadPendingPluginDeletions();
+        if (pendingPaths.Contains(targetPath, StringComparer.OrdinalIgnoreCase))
+        {
+            return;
+        }
+
+        pendingPaths.Add(targetPath);
+        SavePendingPluginDeletions(pendingPaths);
+    }
+
+    private List<string> ReadPendingPluginDeletions()
+    {
+        var pendingDeletionFilePath = GetPendingDeletionFilePath();
+        if (!File.Exists(pendingDeletionFilePath))
+        {
+            return [];
+        }
+
+        try
+        {
+            var json = File.ReadAllText(pendingDeletionFilePath);
+            var paths = JsonSerializer.Deserialize<List<string>>(json);
+            return paths?
+                .Where(path => !string.IsNullOrWhiteSpace(path))
+                .Select(Path.GetFullPath)
+                .Distinct(StringComparer.OrdinalIgnoreCase)
+                .ToList() ?? [];
+        }
+        catch
+        {
+            return [];
+        }
+    }
+
+    private void SavePendingPluginDeletions(IEnumerable<string> pendingPaths)
+    {
+        var pendingDeletionFilePath = GetPendingDeletionFilePath();
+        var normalizedPaths = pendingPaths
+            .Where(path => !string.IsNullOrWhiteSpace(path))
+            .Select(Path.GetFullPath)
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(path => path, StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+
+        if (normalizedPaths.Length == 0)
+        {
+            if (File.Exists(pendingDeletionFilePath))
+            {
+                File.Delete(pendingDeletionFilePath);
+            }
+
+            return;
+        }
+
+        Directory.CreateDirectory(PluginsDirectory);
+        var json = JsonSerializer.Serialize(normalizedPaths, new JsonSerializerOptions
+        {
+            WriteIndented = true
+        });
+        File.WriteAllText(pendingDeletionFilePath, json);
+    }
+
+    private string GetPendingDeletionFilePath()
+    {
+        return Path.Combine(PluginsDirectory, PendingDeletionFileName);
+    }
+
+    private void RemovePluginFromSnapshot(string pluginId)
+    {
+        var snapshot = _appSettingsService.Load();
+        if (snapshot.DisabledPluginIds.RemoveAll(id => string.Equals(id, pluginId, StringComparison.OrdinalIgnoreCase)) > 0)
+        {
+            _appSettingsService.Save(snapshot);
+        }
+    }
+
+    private void RemovePluginFromCatalog(string pluginId)
+    {
+        _catalog.RemoveAll(entry => string.Equals(entry.Manifest.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+        _settingsPages.RemoveAll(entry => string.Equals(entry.Plugin.Manifest.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+        _desktopComponents.RemoveAll(entry => string.Equals(entry.Plugin.Manifest.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+        _loadResults.RemoveAll(entry => string.Equals(entry.Manifest?.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+    }
+
     private sealed record PluginCandidate(
         string SourcePath,
         PluginManifest Manifest,

LanMountainDesktop/plugins/PluginSettingsPage.Host.cs

@@ -8,6 +8,8 @@ using Avalonia.Controls;
 using Avalonia.Layout;
 using Avalonia.Media;
 using Avalonia.Platform.Storage;
+using FluentIcons.Avalonia.Fluent;
+using FluentIcons.Common;
 using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
@@ -18,10 +20,10 @@ public partial class PluginSettingsPage : UserControl
 {
     private static readonly IBrush SuccessBrush = new SolidColorBrush(Color.Parse("#FF0F766E"));
     private static readonly IBrush ErrorBrush = new SolidColorBrush(Color.Parse("#FFC42B1C"));
+    private static readonly IBrush DestructiveBrush = new SolidColorBrush(Color.Parse("#FFF87171"));
 
     private readonly AppSettingsService _appSettingsService = new();
     private readonly LocalizationService _localizationService = new();
-    private PluginMarketEmbeddedView? _pluginMarketView;
     private string? _packageImportStatusMessage;
     private bool _packageImportStatusIsError;
 
@@ -34,47 +36,21 @@ public partial class PluginSettingsPage : UserControl
     public void RefreshFromRuntime()
     {
         var runtime = (Application.Current as App)?.PluginRuntimeService;
-        PluginMarketSettingsExpander.Header = L("settings.plugins.market_header", "Official Market");
-        PluginMarketSettingsExpander.Description = L(
-            "settings.plugins.market_desc",
-            "Browse plugins from the official LanAirApp source and stage installs.");
-        PluginMarketDescriptionTextBlock.Text = L(
-            "settings.plugins.market_hint",
-            "Use the official market source hosted in LanAirApp to discover and stage plugin installs.");
         UpdateInstallerUi(runtime);
         if (runtime is null)
         {
             PluginSystemStatusTextBlock.Text = L("settings.plugins.runtime_unavailable", "Plugin runtime is not available.");
             PluginRuntimeSummaryPanel.Children.Clear();
-            PluginCatalogItemsHost.Children.Clear();
+            InstalledPluginsSettingsExpander.Items.Clear();
             PluginRestartHintTextBlock.IsVisible = false;
-            PluginMarketContentHost.Content = CreateSummaryLine(
-                L("settings.plugins.market_unavailable", "Plugin runtime is not available, so the official market cannot be opened right now."));
+            PluginCatalogEmptyTextBlock.IsVisible = false;
             return;
         }
 
-        EnsurePluginMarketView(runtime);
-        _pluginMarketView?.RefreshLocalization();
-        _pluginMarketView?.RefreshInstalledSnapshot();
         BuildRuntimeSummary(runtime);
         BuildPluginCatalog(runtime);
     }
 
-    private void EnsurePluginMarketView(PluginRuntimeService runtime)
-    {
-        if (_pluginMarketView is null)
-        {
-            _pluginMarketView = new PluginMarketEmbeddedView(runtime);
-            PluginMarketContentHost.Content = _pluginMarketView;
-            return;
-        }
-
-        if (!ReferenceEquals(PluginMarketContentHost.Content, _pluginMarketView))
-        {
-            PluginMarketContentHost.Content = _pluginMarketView;
-        }
-    }
-
     private void UpdateInstallerUi(PluginRuntimeService? runtime)
     {
         InstallPluginPackageButton.Content = L("settings.plugins.install_button", "Open .laapp package");
@@ -102,7 +78,7 @@ public partial class PluginSettingsPage : UserControl
             "Detected {0} plugin(s); enabled {1}; loaded {2}; settings pages {3}; widgets {4}; failures {5}.",
             runtime.Catalog.Count,
             enabledCount,
-            runtime.LoadedPlugins.Count,
+            runtime.Catalog.Count(entry => entry.IsLoaded),
             runtime.SettingsPages.Count,
             runtime.DesktopComponents.Count,
             failures.Length);
@@ -127,7 +103,7 @@ public partial class PluginSettingsPage : UserControl
 
     private void BuildPluginCatalog(PluginRuntimeService runtime)
     {
-        PluginCatalogItemsHost.Children.Clear();
+        InstalledPluginsSettingsExpander.Items.Clear();
 
         var plugins = runtime.Catalog
             .OrderBy(entry => entry.Manifest.Name, StringComparer.OrdinalIgnoreCase)
@@ -138,86 +114,20 @@ public partial class PluginSettingsPage : UserControl
 
         foreach (var plugin in plugins)
         {
-            PluginCatalogItemsHost.Children.Add(CreatePluginCatalogItem(runtime, plugin));
+            InstalledPluginsSettingsExpander.Items.Add(CreatePluginCatalogItem(runtime, plugin));
         }
     }
 
-    private Control CreatePluginCatalogItem(PluginRuntimeService runtime, PluginCatalogEntry entry)
+    private SettingsExpanderItem CreatePluginCatalogItem(PluginRuntimeService runtime, PluginCatalogEntry entry)
     {
-        var title = new TextBlock
+        return new SettingsExpanderItem
         {
-            Text = entry.Manifest.Name,
-            FontSize = 16,
-            FontWeight = FontWeight.SemiBold,
-            TextWrapping = TextWrapping.Wrap
+            Content = entry.Manifest.Name,
+            Description = BuildPluginSubtitle(entry),
+            IconSource = CreatePluginCatalogIconSource(),
+            IsClickEnabled = false,
+            Footer = CreatePluginCatalogActions(runtime, entry)
         };
-
-        var subtitle = new TextBlock
-        {
-            Text = BuildPluginSubtitle(entry),
-            Foreground = PluginSystemDescriptionTextBlock.Foreground,
-            TextWrapping = TextWrapping.Wrap
-        };
-
-        var enabledToggle = new ToggleSwitch
-        {
-            IsChecked = entry.IsEnabled,
-            OnContent = L("settings.plugins.toggle_on", "Enabled"),
-            OffContent = L("settings.plugins.toggle_off", "Disabled"),
-            HorizontalAlignment = HorizontalAlignment.Right,
-            VerticalAlignment = VerticalAlignment.Center
-        };
-
-        enabledToggle.IsCheckedChanged += (_, _) => OnPluginEnableChanged(runtime, entry, enabledToggle.IsChecked == true);
-
-        var header = new Grid
-        {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 12,
-            Children =
-            {
-                new StackPanel
-                {
-                    Spacing = 4,
-                    Children = { title, subtitle }
-                },
-                enabledToggle
-            }
-        };
-        Grid.SetColumn(enabledToggle, 1);
-
-        var details = new TextBlock
-        {
-            Text = BuildPluginDetails(entry),
-            Foreground = PluginSystemDescriptionTextBlock.Foreground,
-            TextWrapping = TextWrapping.Wrap
-        };
-
-        return new Border
-        {
-            Background = new SolidColorBrush(Color.Parse("#14000000")),
-            CornerRadius = new CornerRadius(16),
-            Padding = new Thickness(14),
-            Child = new StackPanel
-            {
-                Spacing = 10,
-                Children = { header, details }
-            }
-        };
-    }
-
-    private void OnPluginEnableChanged(PluginRuntimeService runtime, PluginCatalogEntry entry, bool isEnabled)
-    {
-        runtime.SetPluginEnabled(entry.Manifest.Id, isEnabled);
-        BuildRuntimeSummary(runtime);
-        BuildPluginCatalog(runtime);
-        PluginSystemStatusTextBlock.Text = F(
-            "settings.plugins.toggle_result_format",
-            "Plugin '{0}' was {1} for the next launch. Restart the app to apply page and widget changes.",
-            entry.Manifest.Name,
-            isEnabled
-                ? L("settings.plugins.toggle_state_enabled", "enabled")
-                : L("settings.plugins.toggle_state_disabled", "disabled"));
     }
 
     private async void OnInstallPluginPackageClick(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
@@ -275,6 +185,7 @@ public partial class PluginSettingsPage : UserControl
 
             var manifest = runtime.InstallPluginPackage(temporaryPackagePath);
             RefreshFromRuntime();
+            RefreshPluginNavigation(TopLevel.GetTopLevel(this));
             SetPackageImportStatus(
                 F(
                     "settings.plugins.install_success_format",
@@ -307,6 +218,79 @@ public partial class PluginSettingsPage : UserControl
         }
     }
 
+    private void OnDeletePluginClick(PluginRuntimeService runtime, PluginCatalogEntry entry)
+    {
+        try
+        {
+            if (!runtime.DeleteInstalledPlugin(entry.Manifest.Id))
+            {
+                SetPackageImportStatus(
+                    F(
+                        "settings.plugins.delete_failed_format",
+                        "Failed to delete plugin: {0}",
+                        entry.Manifest.Name),
+                    isError: true);
+                return;
+            }
+
+            RefreshFromRuntime();
+            RefreshPluginNavigation(TopLevel.GetTopLevel(this));
+            PluginSystemStatusTextBlock.Text = F(
+                "settings.plugins.delete_success_format",
+                "Plugin '{0}' was staged for deletion. Restart the app to finish removing it.",
+                entry.Manifest.Name);
+            SetPackageImportStatus(
+                F(
+                    "settings.plugins.delete_success_format",
+                    "Plugin '{0}' was staged for deletion. Restart the app to finish removing it.",
+                    entry.Manifest.Name),
+                isError: false);
+        }
+        catch (Exception ex)
+        {
+            SetPackageImportStatus(
+                F(
+                    "settings.plugins.delete_failed_detail_format",
+                    "Failed to delete plugin '{0}': {1}",
+                    entry.Manifest.Name,
+                    ex.Message),
+                isError: true);
+        }
+    }
+
+    private void OnPluginEnabledChanged(PluginRuntimeService runtime, PluginCatalogEntry entry, bool isEnabled)
+    {
+        try
+        {
+            if (!runtime.SetPluginEnabled(entry.Manifest.Id, isEnabled))
+            {
+                return;
+            }
+
+            RefreshFromRuntime();
+            var toggleState = isEnabled
+                ? L("settings.plugins.toggle_state_enabled", "enabled")
+                : L("settings.plugins.toggle_state_disabled", "disabled");
+            SetPackageImportStatus(
+                F(
+                    "settings.plugins.toggle_result_format",
+                    "Plugin '{0}' was {1} for the next launch. Restart the app to apply page and widget changes.",
+                    entry.Manifest.Name,
+                    toggleState),
+                isError: false);
+        }
+        catch (Exception ex)
+        {
+            SetPackageImportStatus(
+                F(
+                    "settings.plugins.toggle_failed_detail_format",
+                    "Failed to update plugin '{0}': {1}",
+                    entry.Manifest.Name,
+                    ex.Message),
+                isError: true);
+        }
+    }
+
     private void RefreshPluginNavigation(TopLevel? topLevel)
     {
         switch (topLevel)
@@ -329,32 +313,13 @@ public partial class PluginSettingsPage : UserControl
 
     private string BuildPluginSubtitle(PluginCatalogEntry entry)
     {
-        var source = entry.IsPackage
-            ? L("settings.plugins.source_package", ".laapp package")
-            : L("settings.plugins.source_manifest", "Loose manifest");
-        var state = entry.IsEnabled
-            ? entry.IsLoaded
-                ? L("settings.plugins.state.loaded", "Loaded")
-                : L("settings.plugins.state.load_failed", "Load failed")
-            : L("settings.plugins.state.disabled", "Disabled");
+        var publisher = string.IsNullOrWhiteSpace(entry.Manifest.Author)
+            ? L("settings.plugins.publisher_unknown", "Unknown publisher")
+            : entry.Manifest.Author;
         return F(
-            "settings.plugins.subtitle_format",
-            "{0} | {1} | {2}",
-            state,
-            source,
-            entry.Manifest.Id);
-    }
-
-    private string BuildPluginDetails(PluginCatalogEntry entry)
-    {
-        var detail = F(
-            "settings.plugins.detail_format",
-            "Settings pages: {0} | Widgets: {1}",
-            entry.SettingsPageCount,
-            entry.WidgetCount);
-        return string.IsNullOrWhiteSpace(entry.ErrorMessage)
-            ? detail
-            : detail + Environment.NewLine + entry.ErrorMessage;
+            "settings.plugins.publisher_format",
+            "Publisher: {0}",
+            publisher);
     }
 
     private TextBlock CreateSummaryLine(string text)
@@ -378,6 +343,75 @@ public partial class PluginSettingsPage : UserControl
         return string.Format(CultureInfo.CurrentCulture, L(key, fallback), args);
     }
 
+    private FluentIcons.Avalonia.Fluent.SymbolIconSource CreatePluginCatalogIconSource()
+    {
+        return new FluentIcons.Avalonia.Fluent.SymbolIconSource
+        {
+            Symbol = FluentIcons.Common.Symbol.PuzzlePiece,
+            IconVariant = FluentIcons.Common.IconVariant.Regular
+        };
+    }
+
+    private Control CreatePluginCatalogActions(PluginRuntimeService runtime, PluginCatalogEntry entry)
+    {
+        return new StackPanel
+        {
+            Orientation = Orientation.Horizontal,
+            Spacing = 10,
+            HorizontalAlignment = HorizontalAlignment.Right,
+            VerticalAlignment = VerticalAlignment.Center,
+            Children =
+            {
+                CreateEnablePluginToggle(runtime, entry),
+                CreateDeletePluginButton(runtime, entry)
+            }
+        };
+    }
+
+    private ToggleSwitch CreateEnablePluginToggle(PluginRuntimeService runtime, PluginCatalogEntry entry)
+    {
+        var toggle = new ToggleSwitch
+        {
+            IsChecked = entry.IsEnabled,
+            VerticalAlignment = VerticalAlignment.Center
+        };
+
+        ToolTip.SetTip(
+            toggle,
+            entry.IsEnabled
+                ? L("settings.plugins.toggle_off", "Disable")
+                : L("settings.plugins.toggle_on", "Enable"));
+        toggle.IsCheckedChanged += (_, _) => OnPluginEnabledChanged(runtime, entry, toggle.IsChecked == true);
+        return toggle;
+    }
+
+    private Button CreateDeletePluginButton(PluginRuntimeService runtime, PluginCatalogEntry entry)
+    {
+        var button = new Button
+        {
+            Width = 36,
+            Height = 36,
+            Padding = new Thickness(0),
+            Background = Brushes.Transparent,
+            BorderThickness = new Thickness(0),
+            HorizontalAlignment = HorizontalAlignment.Right,
+            VerticalAlignment = VerticalAlignment.Center,
+            Content = new FluentIcons.Avalonia.Fluent.SymbolIcon
+            {
+                Symbol = FluentIcons.Common.Symbol.Delete,
+                IconVariant = FluentIcons.Common.IconVariant.Regular,
+                FontSize = 18,
+                Foreground = DestructiveBrush,
+                HorizontalAlignment = HorizontalAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center
+            }
+        };
+
+        ToolTip.SetTip(button, L("settings.plugins.delete_button", "Delete plugin"));
+        button.Click += (_, _) => OnDeletePluginClick(runtime, entry);
+        return button;
+    }
+
     private static async Task<string?> CopyPackageToTemporaryFileAsync(IStorageFile file)
     {
         try

LanMountainDesktop/plugins/PluginSettingsPage.axaml

@@ -44,31 +44,13 @@
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="InstalledPluginsSettingsExpander"
                                  Header="Installed Plugins"
-                                 Description="Enable plugins here. Detailed settings appear as separate settings pages."
+                                 Description="Manage installed plugins here."
                                  IsExpanded="True">
                 <ui:SettingsExpander.IconSource>
                     <ui:FontIconSource Glyph="&#xe8fd;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
                 </ui:SettingsExpander.IconSource>
                 <ui:SettingsExpander.Footer>
                     <StackPanel Spacing="10">
-                        <Border Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
-                                CornerRadius="{DynamicResource DesignCornerRadiusSm}"
-                                Padding="14">
-                            <StackPanel Spacing="10">
-                                <Button x:Name="InstallPluginPackageButton"
-                                        HorizontalAlignment="Left"
-                                        Click="OnInstallPluginPackageClick"
-                                        Content="Open .laapp package" />
-                                <TextBlock x:Name="PluginPackageImportHintTextBlock"
-                                           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                           TextWrapping="Wrap"
-                                           Text="Open a .laapp package to install it into the local plugin directory." />
-                                <TextBlock x:Name="PluginPackageImportStatusTextBlock"
-                                           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                           TextWrapping="Wrap"
-                                           IsVisible="False" />
-                            </StackPanel>
-                        </Border>
                         <TextBlock x:Name="PluginRestartHintTextBlock"
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                    TextWrapping="Wrap"
@@ -77,30 +59,37 @@
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                    Text="No plugins found."
                                    IsVisible="False" />
-                        <StackPanel x:Name="PluginCatalogItemsHost" Spacing="12" />
                     </StackPanel>
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
         </Border>
 
         <Border Classes="settings-expander-shell">
-            <ui:SettingsExpander x:Name="PluginMarketSettingsExpander"
-                                 Header="Official Market"
-                                 Description="Browse plugins from the official LanAirApp source and stage installs."
-                                 IsExpanded="True">
+            <ui:SettingsExpander x:Name="ImportPluginPackageSettingsExpander"
+                                 Header="Install From Package"
+                                 Description="Open a .laapp package and stage it into the local plugin directory."
+                                 IsExpanded="False">
                 <ui:SettingsExpander.IconSource>
-                    <ui:FontIconSource Glyph="&#xe719;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
+                    <ui:FontIconSource Glyph="&#xe8b7;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
                 </ui:SettingsExpander.IconSource>
                 <ui:SettingsExpander.Footer>
                     <StackPanel Spacing="10">
-                        <TextBlock x:Name="PluginMarketDescriptionTextBlock"
+                        <Button x:Name="InstallPluginPackageButton"
+                                HorizontalAlignment="Left"
+                                Click="OnInstallPluginPackageClick"
+                                Content="Open .laapp package" />
+                        <TextBlock x:Name="PluginPackageImportHintTextBlock"
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                    TextWrapping="Wrap"
-                                   Text="Use the official market source hosted in LanAirApp to discover and stage plugin installs." />
-                        <ContentControl x:Name="PluginMarketContentHost" />
+                                   Text="Open a .laapp package to install it into the local plugin directory." />
+                        <TextBlock x:Name="PluginPackageImportStatusTextBlock"
+                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                   TextWrapping="Wrap"
+                                   IsVisible="False" />
                     </StackPanel>
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
         </Border>
+
     </StackPanel>
 </UserControl>

LanMountainDesktop/plugins/SettingsWindow.PluginMarketSettingsLocalization.cs

@@ -0,0 +1,9 @@
+namespace LanMountainDesktop.Views;
+
+public partial class SettingsWindow
+{
+    private void ApplyPluginMarketSettingsLocalization()
+    {
+        PluginMarketSettingsPanel.RefreshFromRuntime();
+    }
+}

LanMountainDesktop/plugins/SettingsWindow.PluginSettingsControls.cs

@@ -9,6 +9,7 @@ public partial class SettingsWindow
     internal TextBlock PluginSystemDescriptionTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemDescriptionTextBlock")!;
     internal TextBlock PluginSystemStatusTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemStatusTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander InstalledPluginsSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("InstalledPluginsSettingsExpander")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander ImportPluginPackageSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("ImportPluginPackageSettingsExpander")!;
     internal TextBlock PluginRestartHintTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginRestartHintTextBlock")!;
     internal TextBlock PluginCatalogEmptyTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginCatalogEmptyTextBlock")!;
 }

LanMountainDesktop/plugins/SettingsWindow.PluginSettingsLocalization.cs

@@ -10,8 +10,10 @@ public partial class SettingsWindow
         PluginSystemDescriptionTextBlock.Text = L("settings.plugins.runtime_hint", "This page shows discovery status, load results, and runtime diagnostics for installed plugins.");
         PluginSystemStatusTextBlock.Text = L("settings.plugins.runtime_status", "Plugin runtime status will appear here after plugin discovery completes.");
         InstalledPluginsSettingsExpander.Header = L("settings.plugins.installed_header", "Installed Plugins");
-        InstalledPluginsSettingsExpander.Description = L("settings.plugins.installed_desc", "Enable or disable plugins here. Detailed plugin settings appear as separate settings pages.");
-        PluginRestartHintTextBlock.Text = L("settings.plugins.restart_hint", "Plugin enable state changes take effect after restarting the app.");
+        InstalledPluginsSettingsExpander.Description = L("settings.plugins.installed_desc", "Review installed plugins and remove them here.");
+        ImportPluginPackageSettingsExpander.Header = L("settings.plugins.import_header", "Install From Package");
+        ImportPluginPackageSettingsExpander.Description = L("settings.plugins.import_desc", "Open a .laapp package and stage it into the local plugin directory.");
+        PluginRestartHintTextBlock.Text = L("settings.plugins.restart_hint", "Plugin installation and deletion changes take effect after restarting the app.");
         PluginCatalogEmptyTextBlock.Text = L("settings.plugins.empty", "No plugins found.");
         PluginSettingsPanel.RefreshFromRuntime();
     }

LanMountainDesktop/scripts/package.ps1

@@ -141,6 +141,37 @@ function Create-PackageArchive {
     return $archivePath
 }
 
+function Clear-DirectoryContents {
+    param([Parameter(Mandatory = $true)][string]$TargetDirectory)
+
+    [System.IO.Directory]::CreateDirectory($TargetDirectory) | Out-Null
+    Get-ChildItem -LiteralPath $TargetDirectory -Force -ErrorAction SilentlyContinue | ForEach-Object {
+        Remove-Item -LiteralPath $_.FullName -Recurse -Force -ErrorAction Stop
+    }
+}
+
+function Remove-LegacyOutputArtifacts {
+    param([Parameter(Mandatory = $true)][string]$TargetDirectory)
+
+    $legacyArtifacts = @(
+        "LanMontainDesktop.exe",
+        "LanMontainDesktop.dll",
+        "LanMontainDesktop.deps.json",
+        "LanMontainDesktop.runtimeconfig.json",
+        "LanMontainDesktop.pdb"
+    )
+
+    foreach ($artifactName in $legacyArtifacts) {
+        $artifactPath = Join-Path $TargetDirectory $artifactName
+        if (-not (Test-Path -LiteralPath $artifactPath)) {
+            continue
+        }
+
+        Remove-Item -LiteralPath $artifactPath -Force -ErrorAction Stop
+        Write-Host "Removed legacy artifact: $artifactPath"
+    }
+}
+
 function Add-LinuxDesktopAssets {
     param(
         [Parameter(Mandatory = $true)][string]$PublishedDirectory,
@@ -187,7 +218,7 @@ if (-not $PublishDir) {
 if (-not [System.IO.Path]::IsPathRooted($PublishDir)) {
     $PublishDir = Join-Path $repoRoot $PublishDir
 }
-[System.IO.Directory]::CreateDirectory($PublishDir) | Out-Null
+Clear-DirectoryContents -TargetDirectory $PublishDir
 
 Write-Host "Publishing project..."
 $publishArgs = @(
@@ -210,6 +241,7 @@ if ($LASTEXITCODE -ne 0) {
 }
 
 Remove-LibVlcForOtherArch -PublishedDirectory $PublishDir -Rid $RuntimeIdentifier
+Remove-LegacyOutputArtifacts -TargetDirectory $PublishDir
 
 if ($RuntimeIdentifier -like "linux-*") {
     Add-LinuxDesktopAssets -PublishedDirectory $PublishDir -RepoRoot $repoRoot

airappmarket/assets/plugin-marketplace.svg

@@ -1,13 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" role="img" aria-label="Plugin Marketplace">
-  <defs>
-    <linearGradient id="marketBg" x1="0" x2="1" y1="0" y2="1">
-      <stop offset="0%" stop-color="#0EA5E9"/>
-      <stop offset="100%" stop-color="#22C55E"/>
-    </linearGradient>
-  </defs>
-  <rect x="8" y="8" width="112" height="112" rx="28" fill="url(#marketBg)"/>
-  <path d="M43 36h42c3.866 0 7 3.134 7 7v42c0 3.866-3.134 7-7 7H43c-3.866 0-7-3.134-7-7V43c0-3.866 3.134-7 7-7Z" fill="#FFFFFF" fill-opacity="0.16"/>
-  <path d="M52 52h24a12 12 0 0 1 0 24H52a8 8 0 0 1 0-16h4" fill="none" stroke="#FFFFFF" stroke-linecap="round" stroke-linejoin="round" stroke-width="10"/>
-  <circle cx="84" cy="84" r="14" fill="#FFFFFF"/>
-  <path d="M84 76v16M76 84h16" stroke="#0EA5E9" stroke-linecap="round" stroke-width="8"/>
-</svg>

airappmarket/index.json

@@ -2,31 +2,8 @@
   "schemaVersion": "1.0.0",
   "sourceId": "official.lanmountaindesktop",
   "sourceName": "LanMountainDesktop Official Market",
-  "generatedAt": "2026-03-10T01:30:00Z",
+  "generatedAt": "2026-03-10T11:10:00Z",
   "plugins": [
-    {
-      "id": "LanMountainDesktop.PluginMarketplace",
-      "name": "LanMountain Plugin Marketplace",
-      "description": "Official plugin marketplace for browsing and installing LanMountainDesktop plugins.",
-      "author": "LanMountainDesktop",
-      "version": "1.0.0",
-      "apiVersion": "1.0.0",
-      "minHostVersion": "1.0.0",
-      "downloadUrl": "https://raw.githubusercontent.com/wwiinnddyy/LanMountainDesktop/main/LanAirApp/releases/LanMountainDesktop.PluginMarketplace.1.0.0.laapp",
-      "sha256": "51e73bf834c4c3f8a32bc711e9db62b954e24a3577e580d6faa4c3986ce70e0b",
-      "packageSizeBytes": 1704353,
-      "iconUrl": "https://raw.githubusercontent.com/wwiinnddyy/LanMountainDesktop/main/airappmarket/assets/plugin-marketplace.svg",
-      "homepageUrl": "https://github.com/wwiinnddyy/LanMountainDesktop/tree/main/LanAirApp/plugins/LanMountainDesktop.PluginMarketplace",
-      "repositoryUrl": "https://github.com/wwiinnddyy/LanMountainDesktop/tree/main/LanAirApp/plugins/LanMountainDesktop.PluginMarketplace",
-      "tags": [
-        "official",
-        "market",
-        "settings"
-      ],
-      "publishedAt": "2026-03-10T01:30:00Z",
-      "updatedAt": "2026-03-10T01:30:00Z",
-      "releaseNotes": "Bootstrap plugin for the official LanMountainDesktop marketplace. Install it once from a local .laapp package, then use it to discover and stage future plugin installs and updates."
-    },
     {
       "id": "LanMountainDesktop.SamplePlugin",
       "name": "LanMountain Sample Plugin",