0.7.4

首先我加了CI课程表json的读取，然后把天气时钟这个老问题也修了。

LanMountainDesktop/App.axaml.cs

@@ -101,6 +101,11 @@ public partial class App : Application
 
     public App()
     {
+        if (Design.IsDesignMode)
+        {
+            return;
+        }
+
         _settingsFacade.Settings.Changed += OnSettingsChanged;
         _appearanceThemeService.Changed += OnAppearanceThemeChanged;
     }
@@ -108,9 +113,16 @@ public partial class App : Application
     public override void Initialize()
     {
         AppLogger.Info("App", "Initializing application resources.");
+        AvaloniaXamlLoader.Load(this);
+
+        if (Design.IsDesignMode)
+        {
+            ApplyDesignTimeTheme();
+            return;
+        }
+
         ConfigureWebViewUserDataFolder();
         AvaloniaWebViewBuilder.Initialize(default);
-        AvaloniaXamlLoader.Load(this);
         ApplyThemeFromSettings();
         ApplyCurrentCultureFromSettings();
         EnsureSettingsWindowService();
@@ -119,6 +131,12 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
+        if (Design.IsDesignMode)
+        {
+            base.OnFrameworkInitializationCompleted();
+            return;
+        }
+
         AppLogger.Info("App", "Framework initialization completed.");
         RegisterUiUnhandledExceptionGuard();
         LinuxDesktopEntryInstaller.EnsureInstalled();
@@ -127,6 +145,20 @@ public partial class App : Application
         base.OnFrameworkInitializationCompleted();
     }
 
+    private void ApplyDesignTimeTheme()
+    {
+        RequestedThemeVariant = ThemeVariant.Light;
+
+        try
+        {
+            ApplyAdaptiveThemeResources();
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("Previewer", "Failed to apply adaptive theme resources in design mode.", ex);
+        }
+    }
+
     private void InitializeDesktopShell()
     {
         _desktopShellHost ??= new DesktopShellHost(

LanMountainDesktop/Localization/en-US.json

@@ -38,6 +38,27 @@
     "settings.wallpaper.title":  "Wallpaper",
     "settings.wallpaper.description":  "Pick an image or video to apply as the app window wallpaper immediately.",
     "settings.wallpaper.current_label":  "Current Wallpaper",
+    "settings.wallpaper.type_label":  "Wallpaper Type",
+    "settings.wallpaper.type.image":  "Image",
+    "settings.wallpaper.type.solid_color":  "Solid Color",
+    "settings.wallpaper.type.system":  "System Wallpaper",
+    "settings.wallpaper.system.label":  "System Wallpaper",
+    "settings.wallpaper.system.unavailable":  "Unable to read system wallpaper",
+    "settings.wallpaper.refresh_interval":  "Refresh Interval",
+    "settings.wallpaper.refresh_now":  "Refresh Now",
+    "settings.wallpaper.refresh.30s":  "30 seconds",
+    "settings.wallpaper.refresh.1m":  "1 minute",
+    "settings.wallpaper.refresh.5m":  "5 minutes",
+    "settings.wallpaper.refresh.10m":  "10 minutes",
+    "settings.wallpaper.refresh.15m":  "15 minutes",
+    "settings.wallpaper.refresh.30m":  "30 minutes",
+    "settings.wallpaper.refresh.1h":  "1 hour",
+    "settings.wallpaper.refresh.2h":  "2 hours",
+    "settings.wallpaper.refresh.4h":  "4 hours",
+    "settings.wallpaper.refresh.8h":  "8 hours",
+    "settings.wallpaper.refresh.12h":  "12 hours",
+    "settings.wallpaper.refresh.24h":  "24 hours",
+    "settings.wallpaper.color_label":  "Wallpaper Color",
     "settings.wallpaper.placement_label":  "Placement",
     "settings.wallpaper.placement_desc":  "Adjust how the image fills the desktop.",
     "settings.wallpaper.pick_button":  "Browse Files",
@@ -217,7 +238,14 @@
     "schedule.settings.unnamed":  "Unnamed Schedule",
     "schedule.settings.delete":  "Delete",
     "schedule.settings.picker_title":  "Select ClassIsland schedule file",
-    "schedule.settings.picker_file_type":  "ClassIsland CSES schedule",
+    "schedule.settings.picker_file_type.all":  "ClassIsland Schedule Files",
+    "schedule.settings.picker_file_type.json":  "ClassIsland Profile (JSON)",
+    "schedule.settings.picker_file_type.cses":  "CSES Schedule (YAML)",
+    "schedule.settings.semester.title":  "Semester Settings",
+    "schedule.settings.semester.start_date":  "Semester Start Date",
+    "schedule.settings.semester.week_cycle":  "Week Cycle",
+    "schedule.settings.semester.week_cycle_desc":  "Set the week rotation cycle for multi-week schedules (e.g., 2 for odd/even weeks).",
+    "schedule.settings.semester.week_cycle_format":  "{0}-week rotation",
     "worldclock.settings.title":  "World Clock Settings",
     "worldclock.settings.desc":  "Choose a time zone for each of the four clocks.",
     "worldclock.settings.clock_1":  "Clock 1",

LanMountainDesktop/Localization/zh-CN.json

@@ -41,6 +41,23 @@
     "settings.wallpaper.type_label":  "壁纸类型",
     "settings.wallpaper.type.image":  "图片",
     "settings.wallpaper.type.solid_color":  "纯色",
+    "settings.wallpaper.type.system":  "系统壁纸",
+    "settings.wallpaper.system.label":  "系统壁纸",
+    "settings.wallpaper.system.unavailable":  "无法读取系统壁纸",
+    "settings.wallpaper.refresh_interval":  "刷新频率",
+    "settings.wallpaper.refresh_now":  "立即刷新",
+    "settings.wallpaper.refresh.30s":  "30 秒",
+    "settings.wallpaper.refresh.1m":  "1 分钟",
+    "settings.wallpaper.refresh.5m":  "5 分钟",
+    "settings.wallpaper.refresh.10m":  "10 分钟",
+    "settings.wallpaper.refresh.15m":  "15 分钟",
+    "settings.wallpaper.refresh.30m":  "30 分钟",
+    "settings.wallpaper.refresh.1h":  "1 小时",
+    "settings.wallpaper.refresh.2h":  "2 小时",
+    "settings.wallpaper.refresh.4h":  "4 小时",
+    "settings.wallpaper.refresh.8h":  "8 小时",
+    "settings.wallpaper.refresh.12h":  "12 小时",
+    "settings.wallpaper.refresh.24h":  "24 小时",
     "settings.wallpaper.color_label":  "壁纸颜色",
     "settings.wallpaper.custom_color_tooltip":  "自定义颜色",
     "settings.wallpaper.custom_color_apply":  "应用",
@@ -216,7 +233,14 @@
     "schedule.settings.unnamed":  "未命名课表",
     "schedule.settings.delete":  "删除",
     "schedule.settings.picker_title":  "选择 ClassIsland 课表文件",
-    "schedule.settings.picker_file_type":  "ClassIsland CSES 课表",
+    "schedule.settings.picker_file_type.all":  "ClassIsland 课表文件",
+    "schedule.settings.picker_file_type.json":  "ClassIsland 档案 (JSON)",
+    "schedule.settings.picker_file_type.cses":  "CSES 课表 (YAML)",
+    "schedule.settings.semester.title":  "学期设置",
+    "schedule.settings.semester.start_date":  "学期开始日期",
+    "schedule.settings.semester.week_cycle":  "周循环",
+    "schedule.settings.semester.week_cycle_desc":  "设置多周课表轮换周期，用于计算当前是第几周。",
+    "schedule.settings.semester.week_cycle_format":  "{0} 周轮换",
     "worldclock.settings.title":  "世界时钟设置",
     "worldclock.settings.desc":  "分别为四个时钟选择时区。",
     "worldclock.settings.clock_1":  "时钟 1",

LanMountainDesktop/Models/AppSettingsSnapshot.cs

@@ -33,6 +33,8 @@ public sealed class AppSettingsSnapshot
 
     public string WallpaperPlacement { get; set; } = "Fill";
 
+    public int SystemWallpaperRefreshIntervalSeconds { get; set; } = 300;
+
     public int SettingsTabIndex { get; set; } = 0;
 
     public string? SettingsTabTag { get; set; }

LanMountainDesktop/Models/ComponentSettingsSnapshot.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 
 namespace LanMountainDesktop.Models;
@@ -12,6 +13,10 @@ public sealed class ComponentSettingsSnapshot
 
     public string ActiveImportedClassScheduleId { get; set; } = string.Empty;
 
+    public DateOnly? SemesterStartDate { get; set; }
+
+    public int SemesterWeekCycle { get; set; } = 1;
+
     public bool StudyEnvironmentShowDisplayDb { get; set; } = true;
 
     public bool StudyEnvironmentShowDbfs { get; set; }

LanMountainDesktop/Program.cs

@@ -11,7 +11,7 @@ using LanMountainDesktop.Services.Settings;
 
 namespace LanMountainDesktop;
 
-sealed class Program
+public sealed class Program
 {
     internal static string StartupRenderMode { get; private set; } = AppRenderingModeHelper.Default;
 
@@ -67,7 +67,12 @@ sealed class Program
         }
     }
 
-    public static AppBuilder BuildAvaloniaApp(string renderMode = AppRenderingModeHelper.Default)
+    public static AppBuilder BuildAvaloniaApp()
+    {
+        return BuildAvaloniaApp(AppRenderingModeHelper.Default);
+    }
+
+    public static AppBuilder BuildAvaloniaApp(string renderMode)
     {
         var builder = AppBuilder.Configure<App>()
             .UsePlatformDetect()

LanMountainDesktop/Services/ClassIslandScheduleDataService.cs

@@ -12,7 +12,7 @@ namespace LanMountainDesktop.Services;
 
 public interface IClassIslandScheduleDataService
 {
-    ClassIslandScheduleReadResult Load(string? inputPath = null, string? profileFileName = null);
+    ClassIslandScheduleReadResult Load(string? inputPath = null, string? profileFileName = null, DateOnly? semesterStartDate = null, int semesterWeekCycle = 1);
 
     bool TryResolveClassPlanForDate(
         ClassIslandScheduleSnapshot snapshot,
@@ -43,7 +43,7 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
         .IgnoreUnmatchedProperties()
         .Build();
 
-    public ClassIslandScheduleReadResult Load(string? inputPath = null, string? profileFileName = null)
+    public ClassIslandScheduleReadResult Load(string? inputPath = null, string? profileFileName = null, DateOnly? semesterStartDate = null, int semesterWeekCycle = 1)
     {
         var warnings = new List<string>();
         try
@@ -73,11 +73,11 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
             ClassIslandScheduleSnapshot snapshot;
             if (source.SourceKind == ScheduleSourceKind.Cses)
             {
-                snapshot = ParseCsesSnapshot(source);
+                snapshot = ParseCsesSnapshot(source, semesterStartDate, semesterWeekCycle);
             }
             else
             {
-                var cycleRule = ParseCycleRule(source.SettingsPath, warnings);
+                var cycleRule = ParseCycleRule(source.SettingsPath, warnings, semesterStartDate, semesterWeekCycle);
                 var profileJson = ReadJson(source.ProfilePath);
                 snapshot = ParseProfileSnapshot(profileJson.RootElement, source, cycleRule);
             }
@@ -412,22 +412,50 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
         return null;
     }
 
-    private static ClassIslandScheduleCycleRule ParseCycleRule(string? settingsPath, List<string> warnings)
+    private static ClassIslandScheduleCycleRule ParseCycleRule(
+        string? settingsPath, 
+        List<string> warnings,
+        DateOnly? semesterStartDate = null,
+        int semesterWeekCycle = 1)
     {
-        if (string.IsNullOrWhiteSpace(settingsPath) || !File.Exists(settingsPath))
+        DateOnly? singleWeekStartDate = semesterStartDate;
+        int maxCycle = semesterWeekCycle > 1 ? semesterWeekCycle : 4;
+        var offsetList = new List<int> { -1, -1, 0, 0, 0, 0, 0, 0 };
+
+        if (!string.IsNullOrWhiteSpace(settingsPath) && File.Exists(settingsPath))
         {
-            warnings.Add("ClassIsland Settings.json not found, using default cycle rule.");
+            using var json = ReadJson(settingsPath);
-            return new ClassIslandScheduleCycleRule(null, 4, new List<int> { -1, -1, 0, 0, 0 });
+            var root = json.RootElement;
+            
+            if (!singleWeekStartDate.HasValue)
+            {
+                singleWeekStartDate = TryReadDateOnly(root, "SingleWeekStartTime");
+            }
+            
+            if (semesterWeekCycle <= 1)
+            {
+                maxCycle = TryReadInt(root, "MultiWeekRotationMaxCycle", 4);
+            }
+            
+            var settingsOffsetList = ReadIntList(root, "MultiWeekRotationOffset");
+            if (settingsOffsetList.Count >= 2)
+            {
+                offsetList = settingsOffsetList;
+            }
+        }
+        else
+        {
+            warnings.Add("ClassIsland Settings.json not found, using semester settings from component.");
         }
 
-        using var json = ReadJson(settingsPath);
+        if (maxCycle < 2)
-        var root = json.RootElement;
-        var singleWeekStartDate = TryReadDateOnly(root, "SingleWeekStartTime");
-        var maxCycle = TryReadInt(root, "MultiWeekRotationMaxCycle", 4);
-        var offsetList = ReadIntList(root, "MultiWeekRotationOffset");
-        if (offsetList.Count < 2)
         {
-            offsetList = new List<int> { -1, -1, 0, 0, 0 };
+            maxCycle = 2;
+        }
+
+        while (offsetList.Count <= maxCycle)
+        {
+            offsetList.Add(0);
         }
 
         return new ClassIslandScheduleCycleRule(
@@ -469,7 +497,10 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
             ClassPlanGroups: groups);
     }
 
-    private static ClassIslandScheduleSnapshot ParseCsesSnapshot(ResolvedSource source)
+    private static ClassIslandScheduleSnapshot ParseCsesSnapshot(
+        ResolvedSource source,
+        DateOnly? semesterStartDate = null,
+        int semesterWeekCycle = 1)
     {
         var yaml = File.ReadAllText(source.ProfilePath);
         var csesProfile = CsesDeserializer.Deserialize<CsesProfileDto>(yaml) ?? new CsesProfileDto();
@@ -600,12 +631,19 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
             [GlobalClassPlanGroupId] = new ClassIslandClassPlanGroup(GlobalClassPlanGroupId, "Global", IsGlobal: true)
         };
 
+        var maxCycle = semesterWeekCycle > 1 ? semesterWeekCycle : 4;
+        var offsetList = new List<int> { -1, -1, 0, 0, 0, 0, 0, 0 };
+        while (offsetList.Count <= maxCycle)
+        {
+            offsetList.Add(0);
+        }
+
         return new ClassIslandScheduleSnapshot(
             SourceRootPath: source.SourceRootPath,
             ProfilePath: source.ProfilePath,
             ProfileFileName: source.ProfileFileName,
             LoadedAt: DateTimeOffset.Now,
-            CycleRule: new ClassIslandScheduleCycleRule(null, 4, new List<int> { -1, -1, 0, 0, 0 }),
+            CycleRule: new ClassIslandScheduleCycleRule(semesterStartDate, Math.Clamp(maxCycle, 2, 32), offsetList),
             SelectedClassPlanGroupId: DefaultClassPlanGroupId,
             TempClassPlanGroupId: null,
             IsTempClassPlanGroupEnabled: false,

LanMountainDesktop/Services/PostHogUsageTelemetryService.cs

@@ -337,6 +337,14 @@ public sealed class PostHogUsageTelemetryService : IDisposable
                 ["timestamp"] = timestamp.ToString("o"),
                 ["properties"] = new Dictionary<string, object?>
                 {
+                    ["install_id"] = installId,
+                    ["app_version"] = TelemetryEnvironmentInfo.GetAppVersion(),
+                    ["os_name"] = TelemetryEnvironmentInfo.GetOsName(),
+                    ["os_version"] = TelemetryEnvironmentInfo.GetOsVersion(),
+                    ["device_model"] = TelemetryEnvironmentInfo.GetDeviceModel(),
+                    ["device_arch"] = TelemetryEnvironmentInfo.GetDeviceArchitecture(),
+                    ["runtime_version"] = TelemetryEnvironmentInfo.GetRuntimeVersion(),
+                    ["language"] = TelemetryEnvironmentInfo.GetSystemLanguage(),
                     ["launch_time_utc"] = timestamp.ToString("o")
                 }
             };

LanMountainDesktop/Services/Settings/SettingsContracts.cs

@@ -16,7 +16,13 @@ public enum WallpaperMediaType
 }
 
 public sealed record GridSettingsState(int ShortSideCells, string SpacingPreset, int EdgeInsetPercent);
-public sealed record WallpaperSettingsState(string? WallpaperPath, string Type, string? Color, string Placement, string? CustomColor = null);
+public sealed record WallpaperSettingsState(
+    string? WallpaperPath, 
+    string Type, 
+    string? Color, 
+    string Placement, 
+    string? CustomColor = null,
+    int SystemWallpaperRefreshIntervalSeconds = 300);
 public sealed record ThemeAppearanceSettingsState(
     bool IsNightMode,
     string? ThemeColor,

LanMountainDesktop/Services/Settings/SettingsDomainServices.cs

@@ -101,7 +101,9 @@ internal sealed class WallpaperSettingsService : IWallpaperSettingsService
                 : snapshot.WallpaperPath,
             normalizedType,
             snapshot.WallpaperColor,
-            snapshot.WallpaperPlacement);
+            snapshot.WallpaperPlacement,
+            CustomColor: null,
+            SystemWallpaperRefreshIntervalSeconds: NormalizeRefreshInterval(snapshot.SystemWallpaperRefreshIntervalSeconds));
     }
 
     public void Save(WallpaperSettingsState state)
@@ -128,6 +130,7 @@ internal sealed class WallpaperSettingsService : IWallpaperSettingsService
         snapshot.WallpaperPlacement = string.IsNullOrWhiteSpace(state.Placement)
             ? "Fill"
             : state.Placement.Trim();
+        snapshot.SystemWallpaperRefreshIntervalSeconds = NormalizeRefreshInterval(state.SystemWallpaperRefreshIntervalSeconds);
         _settingsService.SaveSnapshot(
             SettingsScope.App,
             snapshot,
@@ -136,9 +139,21 @@ internal sealed class WallpaperSettingsService : IWallpaperSettingsService
                 nameof(AppSettingsSnapshot.WallpaperPath),
                 nameof(AppSettingsSnapshot.WallpaperType),
                 nameof(AppSettingsSnapshot.WallpaperColor),
-                nameof(AppSettingsSnapshot.WallpaperPlacement)
+                nameof(AppSettingsSnapshot.WallpaperPlacement),
+                nameof(AppSettingsSnapshot.SystemWallpaperRefreshIntervalSeconds)
             ]);
     }
+
+    private static int NormalizeRefreshInterval(int seconds)
+    {
+        return seconds switch
+        {
+            <= 0 => 300,
+            < 30 => 30,
+            > 86400 => 86400,
+            _ => seconds
+        };
+    }
 }
 
 internal sealed class WallpaperMediaService : IWallpaperMediaService

LanMountainDesktop/Services/SystemWallpaperProvider.cs

@@ -0,0 +1,65 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using Avalonia.Media.Imaging;
+using Microsoft.Win32;
+
+namespace LanMountainDesktop.Services;
+
+public interface ISystemWallpaperProvider
+{
+    bool IsSupported { get; }
+    string? GetWallpaperPath();
+    event EventHandler? WallpaperChanged;
+}
+
+internal sealed class SystemWallpaperProvider : ISystemWallpaperProvider, IDisposable
+{
+    public bool IsSupported => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+
+    public event EventHandler? WallpaperChanged;
+
+    public string? GetWallpaperPath()
+    {
+        if (!IsSupported)
+        {
+            return null;
+        }
+
+        try
+        {
+            using var key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop");
+            var wallpaperPath = key?.GetValue("Wallpaper") as string;
+
+            if (string.IsNullOrWhiteSpace(wallpaperPath))
+            {
+                return null;
+            }
+
+            if (!File.Exists(wallpaperPath))
+            {
+                return null;
+            }
+
+            return wallpaperPath;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    public void Dispose()
+    {
+    }
+}
+
+public static class HostSystemWallpaperProvider
+{
+    private static ISystemWallpaperProvider? _instance;
+
+    public static ISystemWallpaperProvider GetOrCreate()
+    {
+        return _instance ??= new SystemWallpaperProvider();
+    }
+}

LanMountainDesktop/Services/TelemetryIdentityService.cs

@@ -78,25 +78,6 @@ public sealed class TelemetryIdentityService
         }
     }
 
-    public string RefreshTelemetryId()
-    {
-        lock (_syncRoot)
-        {
-            EnsureInitialized();
-
-            var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
-            snapshot.TelemetryId = GenerateId();
-            _settingsFacade.Settings.SaveSnapshot(
-                SettingsScope.App,
-                snapshot,
-                changedKeys: [nameof(AppSettingsSnapshot.TelemetryId)]);
-
-            _telemetryId = snapshot.TelemetryId ?? GenerateId();
-            AppLogger.Info("TelemetryIdentity", $"Telemetry id refreshed. TelemetryId={_telemetryId}");
-            return _telemetryId;
-        }
-    }
-
     public bool MarkBaselineReported()
     {
         lock (_syncRoot)

LanMountainDesktop/Services/WallpaperImageBrushFactory.cs

@@ -5,13 +5,13 @@ using Avalonia.Media.Imaging;
 
 namespace LanMountainDesktop.Services;
 
-internal static class WallpaperImageBrushFactory
+public static class WallpaperImageBrushFactory
 {
-    internal const string Fill = "Fill";
+    public const string Fill = "Fill";
-    internal const string Fit = "Fit";
+    public const string Fit = "Fit";
-    internal const string StretchMode = "Stretch";
+    public const string StretchMode = "Stretch";
-    internal const string Center = "Center";
+    public const string Center = "Center";
-    internal const string Tile = "Tile";
+    public const string Tile = "Tile";
 
     public static string NormalizePlacement(string? placement)
     {

LanMountainDesktop/ViewModels/PrivacySettingsPageViewModel.cs

@@ -58,9 +58,6 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _telemetryIdDescription = string.Empty;
 
-    [ObservableProperty]
-    private string _refreshTelemetryIdText = string.Empty;
-
     [ObservableProperty]
     private string _viewPrivacyPolicyText = string.Empty;
 
@@ -75,27 +72,6 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
         TelemetryId = TelemetryServices.Identity?.TelemetryId ?? string.Empty;
     }
 
-    [RelayCommand]
-    private void RefreshTelemetryId()
-    {
-        try
-        {
-            var identity = TelemetryServices.Identity;
-            if (identity is null)
-            {
-                AppLogger.Warn("PrivacySettings", "Telemetry identity service is unavailable.");
-                return;
-            }
-
-            TelemetryId = identity.RefreshTelemetryId();
-            AppLogger.Info("PrivacySettings", $"Telemetry ID refreshed: {TelemetryId}");
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("PrivacySettings", "Failed to refresh telemetry ID.", ex);
-        }
-    }
-
     partial void OnUploadAnonymousCrashDataChanged(bool value)
     {
         if (_isInitializing)
@@ -137,8 +113,7 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
         TelemetryIdHeader = L("settings.privacy.telemetry_id_title", "Telemetry ID");
         TelemetryIdDescription = L(
             "settings.privacy.telemetry_id_description",
-            "A refreshable anonymous identifier used for detailed telemetry sessions.");
+            "An anonymous identifier used for detailed telemetry sessions.");
-        RefreshTelemetryIdText = L("settings.privacy.refresh_telemetry_id", "Refresh");
         PrivacyPolicyHintPrefix = L("settings.privacy.policy_hint_prefix", "For more details, please ");
         ViewPrivacyPolicyText = L("settings.privacy.view_policy", "view our privacy policy");
     }

LanMountainDesktop/ViewModels/WallpaperSettingsPageViewModel.cs

@@ -1,7 +1,8 @@
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
+using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
@@ -15,6 +16,7 @@ namespace LanMountainDesktop.ViewModels;
 public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 {
     private readonly ISettingsFacadeService _settingsFacade;
+    private readonly ISystemWallpaperProvider _systemWallpaperProvider;
     private readonly LocalizationService _localizationService = new();
     private readonly string _languageCode;
     private bool _isInitializing;
@@ -22,9 +24,11 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     public WallpaperSettingsPageViewModel(ISettingsFacadeService settingsFacade)
     {
         _settingsFacade = settingsFacade;
+        _systemWallpaperProvider = HostSystemWallpaperProvider.GetOrCreate();
         _languageCode = _localizationService.NormalizeLanguageCode(_settingsFacade.Region.Get().LanguageCode);
         WallpaperPlacements = CreateWallpaperPlacements();
         WallpaperTypes = CreateWallpaperTypes();
+        RefreshIntervals = CreateRefreshIntervals();
         PresetColors = CreatePresetColors();
         RefreshLocalizedText();
 
@@ -35,8 +39,11 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 
     public IReadOnlyList<SelectionOption> WallpaperPlacements { get; }
     public IReadOnlyList<SelectionOption> WallpaperTypes { get; }
+    public IReadOnlyList<SelectionOption> RefreshIntervals { get; }
     public IReadOnlyList<string> PresetColors { get; }
 
+    public bool IsSystemWallpaperSupported => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+
     [ObservableProperty]
     private string _wallpaperPath = string.Empty;
 
@@ -49,6 +56,9 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private SelectionOption _selectedWallpaperPlacement = null!;
 
+    [ObservableProperty]
+    private SelectionOption _selectedRefreshInterval = null!;
+
     [ObservableProperty]
     private string _wallpaperHeader = string.Empty;
 
@@ -73,6 +83,18 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _filePickerTitle = string.Empty;
 
+    [ObservableProperty]
+    private string _systemWallpaperLabel = string.Empty;
+
+    [ObservableProperty]
+    private string _refreshIntervalLabel = string.Empty;
+
+    [ObservableProperty]
+    private string _refreshButtonTooltip = string.Empty;
+
+    [ObservableProperty]
+    private string _systemWallpaperStatus = string.Empty;
+
     [ObservableProperty]
     private bool _isImageOrVideo;
 
@@ -82,13 +104,15 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private bool _isImage;
 
+    [ObservableProperty]
+    private bool _isSystemWallpaper;
+
     [ObservableProperty]
     private Bitmap? _previewImage;
 
     [ObservableProperty]
     private IBrush? _previewBrush;
 
-    // 自定义颜色持久化
     [ObservableProperty]
     private Color _customColor = Colors.White;
 
@@ -110,7 +134,11 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
             string.Equals(option.Value, wallpaperPlacement, StringComparison.OrdinalIgnoreCase))
             ?? WallpaperPlacements[0];
 
-        // 加载自定义颜色
+        var refreshIntervalSeconds = wallpaper.SystemWallpaperRefreshIntervalSeconds;
+        SelectedRefreshInterval = RefreshIntervals.FirstOrDefault(option =>
+            GetIntervalSeconds(option.Value) == refreshIntervalSeconds)
+            ?? RefreshIntervals[2];
+
         if (!string.IsNullOrWhiteSpace(wallpaper.CustomColor) && Color.TryParse(wallpaper.CustomColor, out var customColor))
         {
             CustomColor = customColor;
@@ -119,6 +147,7 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 
         UpdateVisibility();
         UpdatePreviewFromCurrentSelection();
+        UpdateSystemWallpaperStatus();
     }
 
     partial void OnSelectedWallpaperTypeChanged(SelectionOption value)
@@ -132,8 +161,9 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     private void UpdateVisibility()
     {
         IsImage = SelectedWallpaperType?.Value == "Image";
-        IsImageOrVideo = IsImage;
+        IsImageOrVideo = IsImage || SelectedWallpaperType?.Value == "SystemWallpaper";
         IsSolidColor = SelectedWallpaperType?.Value == "SolidColor";
+        IsSystemWallpaper = SelectedWallpaperType?.Value == "SystemWallpaper";
     }
 
     partial void OnSelectedColorChanged(string? value)
@@ -145,13 +175,18 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     partial void OnCustomColorChanged(Color value)
     {
         CustomColorBrush = new SolidColorBrush(value);
-        // 将自定义颜色应用到壁纸
         var colorHex = $"#{value.A:X2}{value.R:X2}{value.G:X2}{value.B:X2}";
         SelectedColor = colorHex;
         if (_isInitializing) return;
         SaveWallpaper();
     }
 
+    partial void OnSelectedRefreshIntervalChanged(SelectionOption value)
+    {
+        if (_isInitializing) return;
+        SaveWallpaper();
+    }
+
     public async Task ImportWallpaperAsync(string sourcePath)
     {
         var importedPath = await _settingsFacade.WallpaperMedia.ImportAssetAsync(sourcePath);
@@ -170,6 +205,12 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 
     private void UpdatePreviewFromCurrentSelection()
     {
+        if (IsSystemWallpaper)
+        {
+            UpdateSystemWallpaperPreview();
+            return;
+        }
+
         if (!IsImage)
         {
             ClearPreviewImage();
@@ -180,10 +221,24 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         UpdatePreviewImage(WallpaperPath);
     }
 
-    private void UpdatePreviewImage(string path)
+    private void UpdateSystemWallpaperPreview()
+    {
+        var systemPath = _systemWallpaperProvider.GetWallpaperPath();
+        if (string.IsNullOrWhiteSpace(systemPath))
+        {
+            ClearPreviewImage();
+            SystemWallpaperStatus = L("settings.wallpaper.system.unavailable", "Unable to read system wallpaper");
+            return;
+        }
+
+        SystemWallpaperStatus = systemPath;
+        UpdatePreviewImage(systemPath);
+    }
+
+    private void UpdatePreviewImage(string? path)
     {
         var previousPreview = PreviewImage;
-        if (string.IsNullOrWhiteSpace(path) || !System.IO.File.Exists(path))
+        if (string.IsNullOrWhiteSpace(path) || !File.Exists(path))
         {
             previousPreview?.Dispose();
             PreviewImage = null;
@@ -193,7 +248,7 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 
         try
         {
-            using var stream = System.IO.File.OpenRead(path);
+            using var stream = File.OpenRead(path);
             var bitmap = new Bitmap(stream);
             PreviewImage = bitmap;
             PreviewBrush = WallpaperImageBrushFactory.Create(bitmap, SelectedWallpaperPlacement?.Value);
@@ -215,9 +270,21 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         previousPreview?.Dispose();
     }
 
+    private void UpdateSystemWallpaperStatus()
+    {
+        if (!IsSystemWallpaper) return;
+        UpdateSystemWallpaperPreview();
+    }
+
+    [RelayCommand]
+    private void RefreshSystemWallpaper()
+    {
+        UpdateSystemWallpaperPreview();
+    }
+
     partial void OnSelectedWallpaperPlacementChanged(SelectionOption value)
     {
-        if (IsImage && PreviewImage is not null)
+        if ((IsImage || IsSystemWallpaper) && PreviewImage is not null)
         {
             PreviewBrush = WallpaperImageBrushFactory.Create(PreviewImage, value?.Value);
         }
@@ -236,16 +303,46 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     {
         var selectedType = SelectedWallpaperType?.Value ?? "Image";
         var selectedPlacement = SelectedWallpaperPlacement?.Value ?? WallpaperImageBrushFactory.Fill;
-        var normalizedPath = SelectedWallpaperType?.Value == "SolidColor" || string.IsNullOrWhiteSpace(WallpaperPath)
+        var refreshIntervalSeconds = GetIntervalSeconds(SelectedRefreshInterval?.Value);
-            ? null
+        
-            : WallpaperPath;
+        string? normalizedPath;
+        if (selectedType == "SolidColor" || selectedType == "SystemWallpaper")
+        {
+            normalizedPath = null;
+        }
+        else
+        {
+            normalizedPath = string.IsNullOrWhiteSpace(WallpaperPath) ? null : WallpaperPath;
+        }
+
         var customColorHex = $"#{CustomColor.A:X2}{CustomColor.R:X2}{CustomColor.G:X2}{CustomColor.B:X2}";
         _settingsFacade.Wallpaper.Save(new WallpaperSettingsState(
             normalizedPath,
             selectedType,
             SelectedColor,
             selectedPlacement,
-            customColorHex));
+            customColorHex,
+            refreshIntervalSeconds));
+    }
+
+    private static int GetIntervalSeconds(string? value)
+    {
+        return value switch
+        {
+            "30s" => 30,
+            "1m" => 60,
+            "5m" => 300,
+            "10m" => 600,
+            "15m" => 900,
+            "30m" => 1800,
+            "1h" => 3600,
+            "2h" => 7200,
+            "4h" => 14400,
+            "8h" => 28800,
+            "12h" => 43200,
+            "24h" => 86400,
+            _ => 300
+        };
     }
 
     private IReadOnlyList<SelectionOption> CreateWallpaperPlacements()
@@ -262,10 +359,36 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
 
     private IReadOnlyList<SelectionOption> CreateWallpaperTypes()
     {
-        return
+        var types = new List<SelectionOption>
-        [
+        {
             new SelectionOption("Image", L("settings.wallpaper.type.image", "Image")),
             new SelectionOption("SolidColor", L("settings.wallpaper.type.solid_color", "Solid Color"))
+        };
+
+        if (IsSystemWallpaperSupported)
+        {
+            types.Add(new SelectionOption("SystemWallpaper", L("settings.wallpaper.type.system", "System Wallpaper")));
+        }
+
+        return types;
+    }
+
+    private IReadOnlyList<SelectionOption> CreateRefreshIntervals()
+    {
+        return
+        [
+            new SelectionOption("30s", L("settings.wallpaper.refresh.30s", "30 seconds")),
+            new SelectionOption("1m", L("settings.wallpaper.refresh.1m", "1 minute")),
+            new SelectionOption("5m", L("settings.wallpaper.refresh.5m", "5 minutes")),
+            new SelectionOption("10m", L("settings.wallpaper.refresh.10m", "10 minutes")),
+            new SelectionOption("15m", L("settings.wallpaper.refresh.15m", "15 minutes")),
+            new SelectionOption("30m", L("settings.wallpaper.refresh.30m", "30 minutes")),
+            new SelectionOption("1h", L("settings.wallpaper.refresh.1h", "1 hour")),
+            new SelectionOption("2h", L("settings.wallpaper.refresh.2h", "2 hours")),
+            new SelectionOption("4h", L("settings.wallpaper.refresh.4h", "4 hours")),
+            new SelectionOption("8h", L("settings.wallpaper.refresh.8h", "8 hours")),
+            new SelectionOption("12h", L("settings.wallpaper.refresh.12h", "12 hours")),
+            new SelectionOption("24h", L("settings.wallpaper.refresh.24h", "24 hours"))
         ];
     }
 
@@ -289,6 +412,9 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         WallpaperPlacementDescription = L("settings.wallpaper.placement_desc", "Adjust how the image fills the desktop.");
         ImportWallpaperButtonText = L("settings.wallpaper.pick_button", "Import Wallpaper");
         FilePickerTitle = L("filepicker.title", "Select wallpaper");
+        SystemWallpaperLabel = L("settings.wallpaper.system.label", "System Wallpaper");
+        RefreshIntervalLabel = L("settings.wallpaper.refresh_interval", "Refresh Interval");
+        RefreshButtonTooltip = L("settings.wallpaper.refresh_now", "Refresh Now");
     }
 
     private string L(string key, string fallback)

LanMountainDesktop/ViewModels/WeatherSettingsPageViewModel.cs

@@ -27,7 +27,8 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
         ISettingsFacadeService settingsFacade,
         LocalizationService localizationService,
         ILocationService locationService,
-        WeatherLocationRefreshService weatherLocationRefreshService)
+        WeatherLocationRefreshService weatherLocationRefreshService,
+        bool enableStartupPreviewRefresh = true)
     {
         _settingsFacade = settingsFacade ?? throw new ArgumentNullException(nameof(settingsFacade));
         _localizationService = localizationService ?? throw new ArgumentNullException(nameof(localizationService));
@@ -52,7 +53,10 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
             ? LocationReadyText
             : LocationUnsupportedText;
 
-        _ = RefreshPreviewAsync();
+        if (enableStartupPreviewRefresh)
+        {
+            _ = RefreshPreviewAsync();
+        }
     }
 
     public IReadOnlyList<SelectionOption> LocationModes { get; }
@@ -476,6 +480,65 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
         }
     }
 
+    internal void ApplyDesignTimePreview()
+    {
+        _isInitializing = true;
+
+        var previewLocation = new WeatherLocation(
+            "Shenzhen Nanshan",
+            "101280601",
+            22.5431,
+            114.0579,
+            "Guangdong, China");
+        var alternateLocation = new WeatherLocation(
+            "Shanghai Pudong",
+            "101020600",
+            31.2304,
+            121.4737,
+            "Shanghai, China");
+
+        SelectedLocationMode = LocationModes.FirstOrDefault(option =>
+                                   string.Equals(option.Value, "CitySearch", StringComparison.OrdinalIgnoreCase))
+                               ?? LocationModes[0];
+        SearchKeyword = "shenzhen";
+        SelectedSearchResult = previewLocation;
+
+        SearchResults.Clear();
+        SearchResults.Add(previewLocation);
+        SearchResults.Add(alternateLocation);
+
+        Latitude = previewLocation.Latitude;
+        Longitude = previewLocation.Longitude;
+        LocationKey = previewLocation.LocationKey;
+        LocationName = previewLocation.Name;
+        AutoRefreshLocation = true;
+        ExcludedAlerts = "Heat\nThunderstorm";
+        NoTlsRequests = false;
+        IsLocationSupported = true;
+        IsRefreshingLocation = false;
+        IsRefreshingPreview = false;
+
+        _isInitializing = false;
+
+        UpdateModeVisibility();
+        UpdateCurrentLocationSummary();
+
+        var preview = XiaomiWeatherVisualResolver.Resolve(
+            "Partly cloudy",
+            4,
+            isNight: false,
+            _languageCode);
+
+        SearchStatus = "2 sample locations are shown for design preview.";
+        LocationActionStatus = "Using mocked Windows location support in design mode.";
+        PreviewIcon = HyperOS3WeatherAssetLoader.LoadImage(preview.PrimaryIconAsset);
+        PreviewLocation = previewLocation.Name;
+        PreviewTemperature = "24 deg C";
+        PreviewCondition = preview.DisplayText;
+        PreviewUpdated = "Updated 09:42";
+        PreviewStatus = "Preview data is mocked for Avalonia design mode.";
+    }
+
     private void RefreshLocalizedText()
     {
         PageTitle = L("settings.weather.title", "Weather");

LanMountainDesktop/Views/ComponentEditors/ClassScheduleComponentEditor.axaml

@@ -2,6 +2,8 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:material="clr-namespace:Material.Styles;assembly=Material.Styles"
+             xmlns:materialAssists="clr-namespace:Material.Styles.Assists;assembly=Material.Styles"
              mc:Ignorable="d"
              x:Class="LanMountainDesktop.Views.ComponentEditors.ClassScheduleComponentEditor">
     <StackPanel Spacing="16">
@@ -36,6 +38,45 @@
             </StackPanel>
         </Border>
 
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <StackPanel Spacing="16">
+                <TextBlock x:Name="SemesterSettingsHeaderTextBlock"
+                           Classes="component-editor-section-title" />
+                
+                <Grid ColumnDefinitions="*,Auto" ColumnSpacing="16">
+                    <StackPanel Spacing="8">
+                        <TextBlock x:Name="SemesterStartDateLabel"
+                                   Classes="component-editor-secondary-text" />
+                        <CalendarDatePicker x:Name="SemesterStartDatePicker"
+                                           HorizontalAlignment="Stretch"
+                                           SelectedDateChanged="OnSemesterStartDateChanged" />
+                    </StackPanel>
+                    <StackPanel Grid.Column="1" Spacing="8" Width="160">
+                        <TextBlock x:Name="WeekCycleLabel"
+                                   Classes="component-editor-secondary-text" />
+                        <ComboBox x:Name="WeekCycleComboBox"
+                                  Classes="component-editor-select"
+                                  HorizontalAlignment="Stretch"
+                                  SelectionChanged="OnWeekCycleSelectionChanged">
+                            <ComboBoxItem Content="1" Tag="1" />
+                            <ComboBoxItem Content="2" Tag="2" />
+                            <ComboBoxItem Content="3" Tag="3" />
+                            <ComboBoxItem Content="4" Tag="4" />
+                            <ComboBoxItem Content="5" Tag="5" />
+                            <ComboBoxItem Content="6" Tag="6" />
+                            <ComboBoxItem Content="7" Tag="7" />
+                        </ComboBox>
+                    </StackPanel>
+                </Grid>
+                
+                <TextBlock x:Name="WeekCycleDescription"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap"
+                           Opacity="0.7" />
+            </StackPanel>
+        </Border>
+
         <Border Classes="component-editor-card"
                 Padding="20">
             <StackPanel Spacing="12">

LanMountainDesktop/Views/ComponentEditors/ClassScheduleComponentEditor.axaml.cs

@@ -76,6 +76,11 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
         FollowSystemColorSchemeItem.Content = L("component.color_scheme.follow_system", "Follow system color scheme");
         UseNativeColorSchemeItem.Content = L("component.color_scheme.native", "Use component custom color scheme");
 
+        SemesterSettingsHeaderTextBlock.Text = L("schedule.settings.semester.title", "Semester Settings");
+        SemesterStartDateLabel.Text = L("schedule.settings.semester.start_date", "Semester Start Date");
+        WeekCycleLabel.Text = L("schedule.settings.semester.week_cycle", "Week Cycle");
+        WeekCycleDescription.Text = L("schedule.settings.semester.week_cycle_desc", "Set the week rotation cycle for multi-week schedules (e.g., 2 for odd/even weeks).");
+
         AddScheduleButton.Content = L("schedule.settings.add", "Add Schedule");
         EmptyStateTextBlock.Text = L("schedule.settings.empty", "No imported schedules yet.");
 
@@ -85,9 +90,25 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
             string.Equals(colorSchemeSource, ThemeAppearanceValues.ColorSchemeFollowSystem, StringComparison.OrdinalIgnoreCase)
                 ? FollowSystemColorSchemeItem
                 : UseNativeColorSchemeItem;
+
+        if (snapshot.SemesterStartDate.HasValue)
+        {
+            SemesterStartDatePicker.SelectedDate = snapshot.SemesterStartDate.Value.ToDateTime(TimeOnly.MinValue);
+        }
+
+        var weekCycle = Math.Clamp(snapshot.SemesterWeekCycle, 1, 7);
+        WeekCycleComboBox.SelectedIndex = weekCycle - 1;
+
+        UpdateWeekCycleDescription(weekCycle);
         _suppressEvents = false;
     }
 
+    private void UpdateWeekCycleDescription(int weekCycle)
+    {
+        var format = L("schedule.settings.semester.week_cycle_format", "{0}-week rotation");
+        WeekCycleDescription.Text = string.Format(format, weekCycle);
+    }
+
     private void OnColorSchemeSelectionChanged(object? sender, SelectionChangedEventArgs e)
     {
         _ = sender;
@@ -106,6 +127,39 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
         SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.ColorSchemeSource));
     }
 
+    private void OnSemesterStartDateChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var snapshot = LoadSnapshot();
+        if (SemesterStartDatePicker.SelectedDate.HasValue)
+        {
+            snapshot.SemesterStartDate = DateOnly.FromDateTime(SemesterStartDatePicker.SelectedDate.Value);
+        }
+        else
+        {
+            snapshot.SemesterStartDate = null;
+        }
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.SemesterStartDate));
+    }
+
+    private void OnWeekCycleSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var weekCycle = WeekCycleComboBox.SelectedIndex + 1;
+        var snapshot = LoadSnapshot();
+        snapshot.SemesterWeekCycle = weekCycle;
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.SemesterWeekCycle));
+        UpdateWeekCycleDescription(weekCycle);
+    }
+
     private async void OnAddScheduleClick(object? sender, RoutedEventArgs e)
     {
         _ = sender;
@@ -122,7 +176,15 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
             AllowMultiple = false,
             FileTypeFilter =
             [
-                new FilePickerFileType(L("schedule.settings.picker_file_type", "ClassIsland CSES Schedule"))
+                new FilePickerFileType(L("schedule.settings.picker_file_type.all", "ClassIsland Schedule Files"))
+                {
+                    Patterns = ["*.json", "*.cses", "*.yaml", "*.yml"]
+                },
+                new FilePickerFileType(L("schedule.settings.picker_file_type.json", "ClassIsland Profile (JSON)"))
+                {
+                    Patterns = ["*.json"]
+                },
+                new FilePickerFileType(L("schedule.settings.picker_file_type.cses", "CSES Schedule (YAML)"))
                 {
                     Patterns = ["*.cses", "*.yaml", "*.yml"]
                 }

LanMountainDesktop/Views/Components/BrowserWidget.axaml

@@ -3,7 +3,6 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:fi="using:FluentIcons.Avalonia"
-             xmlns:webview="clr-namespace:AvaloniaWebView;assembly=Avalonia.WebView"
              mc:Ignorable="d"
              d:DesignWidth="480"
              d:DesignHeight="480"
@@ -24,20 +23,27 @@
                     BorderBrush="#22000000"
                     BorderThickness="1">
                 <Grid>
-                    <webview:WebView x:Name="BrowserWebView" />
+                    <Grid x:Name="WebViewPresenter" />
                     <Border x:Name="UnavailableOverlay"
                             IsVisible="False"
                             Background="#CC0F172A"
                             Padding="16">
-                        <TextBlock x:Name="UnavailableMessageTextBlock"
+                        <StackPanel HorizontalAlignment="Center"
-                                   Foreground="#F8FAFC"
+                                    VerticalAlignment="Center"
-                                   TextWrapping="Wrap"
+                                    Spacing="10"
-                                   TextAlignment="Center"
+                                    MaxWidth="360">
-                                   HorizontalAlignment="Center"
+                            <fi:SymbolIcon Symbol="Desktop"
-                                   VerticalAlignment="Center"
+                                           FontSize="28"
-                                   MaxWidth="360"
+                                           HorizontalAlignment="Center"
-                                   FontSize="13"
+                                           Foreground="#F8FAFC" />
-                                   Text="Browser runtime unavailable." />
+                            <TextBlock x:Name="UnavailableMessageTextBlock"
+                                       Foreground="#F8FAFC"
+                                       TextWrapping="Wrap"
+                                       TextAlignment="Center"
+                                       HorizontalAlignment="Center"
+                                       FontSize="13"
+                                       Text="Browser runtime unavailable." />
+                        </StackPanel>
                     </Border>
                 </Grid>
             </Border>

LanMountainDesktop/Views/Components/BrowserWidget.axaml.cs

@@ -17,6 +17,7 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 {
     private static readonly Uri DefaultHomeUri = new("https://www.bing.com");
 
+    private readonly bool _isDesignModePreview = Design.IsDesignMode;
     private double _currentCellSize = 48;
     private string _componentId = BuiltInComponentIds.DesktopBrowser;
     private string _placementId = string.Empty;
@@ -27,6 +28,7 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
     private bool _isEditMode;
     private bool _isWebViewActive = true;
     private bool _isWebViewFaulted;
+    private WebView? _browserWebView;
     private readonly WebView2RuntimeAvailability _runtimeAvailability;
     private bool _isDisposed;
 
@@ -41,10 +43,15 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
         ApplyCellSize(_currentCellSize);
         ApplyTheme(force: true);
 
-        _runtimeAvailability = WebView2RuntimeProbe.GetAvailability();
+        _runtimeAvailability = _isDesignModePreview
+            ? new WebView2RuntimeAvailability(
+                IsAvailable: false,
+                Version: null,
+                Message: "WebView preview is disabled in Avalonia design mode.")
+            : WebView2RuntimeProbe.GetAvailability();
         if (_runtimeAvailability.IsAvailable)
         {
-            BrowserWebView.NavigationStarting += OnBrowserWebViewNavigationStarting;
+            EnsureWebViewCreated();
         }
         else
         {
@@ -69,9 +76,9 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
         AttachedToVisualTree -= OnAttachedToVisualTree;
         DetachedFromVisualTree -= OnDetachedFromVisualTree;
 
-        if (_runtimeAvailability.IsAvailable)
+        if (_browserWebView is not null)
         {
-            BrowserWebView.NavigationStarting -= OnBrowserWebViewNavigationStarting;
+            _browserWebView.NavigationStarting -= OnBrowserWebViewNavigationStarting;
         }
     }
 
@@ -300,6 +307,13 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private void UpdateWebViewActiveState()
     {
+        if (_isDesignModePreview)
+        {
+            _isWebViewActive = false;
+            ApplyRuntimeUnavailableState();
+            return;
+        }
+
         if (!_runtimeAvailability.IsAvailable || _isWebViewFaulted)
         {
             _isWebViewActive = false;
@@ -325,14 +339,21 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private void ActivateWebView()
     {
+        EnsureWebViewCreated();
         if (_isWebViewFaulted || !_runtimeAvailability.IsAvailable)
         {
             ApplyRuntimeUnavailableState();
             return;
         }
 
-        BrowserWebView.IsVisible = true;
+        if (_browserWebView is null)
-        BrowserWebView.IsHitTestVisible = true;
+        {
+            ApplyRuntimeUnavailableState();
+            return;
+        }
+
+        _browserWebView.IsVisible = true;
+        _browserWebView.IsHitTestVisible = true;
         RefreshButton.IsEnabled = true;
         GoButton.IsEnabled = true;
         AddressTextBox.IsEnabled = true;
@@ -341,8 +362,11 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private void DeactivateWebView(bool clearUrl)
     {
-        BrowserWebView.IsHitTestVisible = false;
+        if (_browserWebView is not null)
-        BrowserWebView.IsVisible = false;
+        {
+            _browserWebView.IsHitTestVisible = false;
+            _browserWebView.IsVisible = false;
+        }
 
         if (clearUrl)
         {
@@ -352,9 +376,14 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private bool TryReloadWebView(string action)
     {
+        if (_browserWebView is null)
+        {
+            return false;
+        }
+
         try
         {
-            BrowserWebView.Reload();
+            _browserWebView.Reload();
             return true;
         }
         catch (Exception ex) when (!UiExceptionGuard.IsFatalException(ex))
@@ -366,9 +395,14 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private bool TryNavigate(Uri uri, string action)
     {
+        if (_browserWebView is null)
+        {
+            return false;
+        }
+
         try
         {
-            BrowserWebView.Url = uri;
+            _browserWebView.Url = uri;
             return true;
         }
         catch (Exception ex) when (!UiExceptionGuard.IsFatalException(ex))
@@ -380,9 +414,14 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private void TryClearWebViewUrl()
     {
+        if (_browserWebView is null)
+        {
+            return;
+        }
+
         try
         {
-            BrowserWebView.Url = null;
+            _browserWebView.Url = null;
         }
         catch
         {
@@ -392,14 +431,20 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
 
     private bool CanUseWebView()
     {
-        return _runtimeAvailability.IsAvailable && !_isWebViewFaulted && _isWebViewActive;
+        return _runtimeAvailability.IsAvailable &&
+               !_isWebViewFaulted &&
+               _isWebViewActive &&
+               _browserWebView is not null;
     }
 
     private void ApplyRuntimeUnavailableState()
     {
         _isWebViewActive = false;
-        BrowserWebView.IsVisible = false;
+        if (_browserWebView is not null)
-        BrowserWebView.IsHitTestVisible = false;
+        {
+            _browserWebView.IsVisible = false;
+            _browserWebView.IsHitTestVisible = false;
+        }
 
         RefreshButton.IsEnabled = false;
         GoButton.IsEnabled = false;
@@ -414,6 +459,22 @@ public partial class BrowserWidget : UserControl, IDesktopComponentWidget,
         UnavailableOverlay.IsVisible = true;
     }
 
+    private void EnsureWebViewCreated()
+    {
+        if (_browserWebView is not null || _isDesignModePreview || !_runtimeAvailability.IsAvailable)
+        {
+            return;
+        }
+
+        _browserWebView = new WebView
+        {
+            IsVisible = false,
+            IsHitTestVisible = false
+        };
+        _browserWebView.NavigationStarting += OnBrowserWebViewNavigationStarting;
+        WebViewPresenter.Children.Insert(0, _browserWebView);
+    }
+
     private void EnterFaultedState(string action, Exception ex)
     {
         _isWebViewFaulted = true;

LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs

@@ -253,7 +253,11 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         var today = DateOnly.FromDateTime(now);
 
         var importedSchedulePath = ResolveImportedSchedulePath(componentSettings);
-        var readResult = _scheduleService.Load(importedSchedulePath);
+        var readResult = _scheduleService.Load(
+            importedSchedulePath,
+            profileFileName: null,
+            semesterStartDate: componentSettings.SemesterStartDate,
+            semesterWeekCycle: componentSettings.SemesterWeekCycle);
         if (!readResult.Success || readResult.Snapshot is null)
         {
             _courseItems = Array.Empty<CourseItemViewModel>();

LanMountainDesktop/Views/Components/CnrDailyNewsWidget.axaml.cs

@@ -44,6 +44,7 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         Interval = TimeSpan.FromMinutes(30)
     };
 
+    private readonly bool _isDesignModePreview = Design.IsDesignMode;
     private LanMountainDesktop.PluginSdk.ISettingsService _appSettingsService = LanMountainDesktop.Services.Settings.HostSettingsFacadeProvider.GetOrCreate().Settings;
     private IComponentInstanceSettingsStore _componentSettingsService = HostComponentSettingsStoreProvider.GetOrCreate();
     private readonly LocalizationService _localizationService = new();
@@ -102,12 +103,19 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         News2TitleTextBlock.FontFamily = MiSansFontFamily;
         StatusTextBlock.FontFamily = MiSansFontFamily;
 
+        SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
+        if (_isDesignModePreview)
+        {
+            ApplyCellSize(_currentCellSize);
+            ApplyDesignTimePreview();
+            return;
+        }
+
         _refreshTimer.Tick += OnRefreshTimerTick;
         RefreshButton.Click += OnRefreshButtonClick;
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
-        SizeChanged += OnSizeChanged;
-        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -226,6 +234,12 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
 
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            e.Handled = true;
+            return;
+        }
+
         if (_isRefreshing)
         {
             return;
@@ -242,6 +256,12 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
 
     private void OnNewsItem1PointerPressed(object? sender, PointerPressedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            e.Handled = true;
+            return;
+        }
+
         if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
         {
             return;
@@ -253,6 +273,12 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
 
     private void OnNewsItem2PointerPressed(object? sender, PointerPressedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            e.Handled = true;
+            return;
+        }
+
         if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
         {
             return;
@@ -264,6 +290,12 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
 
     private void OnExtraNewsItemPointerPressed(object? sender, PointerPressedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            e.Handled = true;
+            return;
+        }
+
         if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed ||
             sender is not Control control ||
             control.Tag is not int index)
@@ -408,6 +440,55 @@ public partial class CnrDailyNewsWidget : UserControl, IDesktopComponentWidget,
         UpdateAdaptiveLayout();
     }
 
+    private void ApplyDesignTimePreview()
+    {
+        _isNightVisual = ResolveNightMode();
+        _activeNewsItems =
+        [
+            new DailyNewsItemSnapshot(
+                "LanMountain preview mode now shows mocked widget content in Rider.",
+                null,
+                "https://example.com/news/preview-1",
+                null,
+                "09:30"),
+            new DailyNewsItemSnapshot(
+                "Weather, artwork, and plugin market cards render without live network calls.",
+                null,
+                "https://example.com/news/preview-2",
+                null,
+                "09:10"),
+            new DailyNewsItemSnapshot(
+                "Design-time mocks make isolated widget layout tuning much faster.",
+                null,
+                "https://example.com/news/preview-3",
+                null,
+                "08:55")
+        ];
+
+        _newsUrls.Clear();
+        foreach (var item in _activeNewsItems)
+        {
+            _newsUrls.Add(item.Url);
+        }
+
+        UpdateHotHeadlineText(_activeNewsItems[0].Title);
+        News2TitleTextBlock.Text = NormalizeCompactText(_activeNewsItems[1].Title);
+        StatusTextBlock.Text = string.Empty;
+        StatusTextBlock.IsVisible = false;
+
+        SetNewsBitmap(0, null);
+        SetNewsBitmap(1, null);
+        RenderExtraNewsRows(_activeNewsItems.Skip(2).ToArray());
+        UpdateNewsInteractionState();
+
+        RefreshButton.IsEnabled = false;
+        RefreshButton.Opacity = 1.0;
+        RefreshGlyphIcon.Opacity = 0.82;
+        RefreshLabelTextBlock.Opacity = 0.82;
+
+        UpdateAdaptiveLayout();
+    }
+
     private int ResolveDesiredNewsItemCount()
     {
         return 2;

LanMountainDesktop/Views/Components/DailyArtworkWidget.axaml.cs

@@ -60,6 +60,7 @@ public partial class DailyArtworkWidget : UserControl, IDesktopComponentWidget,
         Interval = TimeSpan.FromHours(6)
     };
 
+    private readonly bool _isDesignModePreview = Design.IsDesignMode;
     private ISettingsService _settingsService = HostSettingsFacadeProvider.GetOrCreate().Settings;
     private readonly LocalizationService _localizationService = new();
 
@@ -85,10 +86,17 @@ public partial class DailyArtworkWidget : UserControl, IDesktopComponentWidget,
         ArtistTextBlock.FontFamily = MiSansFontFamily;
         YearTextBlock.FontFamily = MiSansFontFamily;
 
+        SizeChanged += OnSizeChanged;
+        if (_isDesignModePreview)
+        {
+            ApplyCellSize(_currentCellSize);
+            ApplyDesignTimePreview();
+            return;
+        }
+
         _refreshTimer.Tick += OnRefreshTimerTick;
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
-        SizeChanged += OnSizeChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -177,6 +185,11 @@ public partial class DailyArtworkWidget : UserControl, IDesktopComponentWidget,
 
     private void OnArtworkPanelPointerPressed(object? sender, PointerPressedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            return;
+        }
+
         if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
         {
             return;
@@ -188,6 +201,11 @@ public partial class DailyArtworkWidget : UserControl, IDesktopComponentWidget,
 
     private void OnInfoPanelPointerPressed(object? sender, PointerPressedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            return;
+        }
+
         if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
         {
             return;
@@ -420,6 +438,36 @@ public partial class DailyArtworkWidget : UserControl, IDesktopComponentWidget,
         UpdateAdaptiveLayout();
     }
 
+    private void ApplyDesignTimePreview()
+    {
+        DisposeArtworkBitmap();
+        _currentArtworkSourceUrl = null;
+        _currentArtworkImageUrl = null;
+
+        RootBorder.Background = new SolidColorBrush(Color.Parse("#C6B08B"));
+        ArtworkPanel.Background = new LinearGradientBrush
+        {
+            StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+            EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+            GradientStops = new GradientStops
+            {
+                new GradientStop(Color.Parse("#AA8B69"), 0),
+                new GradientStop(Color.Parse("#5F4B3B"), 1)
+            }
+        };
+        InfoPanel.Background = new SolidColorBrush(Color.Parse("#15181D"));
+
+        DateTextBlock.Text = "03/22";
+        WeekdayTextBlock.Text = "Sunday";
+        PaintingTitleTextBlock.Text = BuildQuotedTitle("The Starry Night");
+        ArtistTextBlock.Text = NormalizeCompactText("Vincent van Gogh");
+        YearTextBlock.Text = "1889 | MoMA";
+        StatusTextBlock.IsVisible = false;
+        StatusTextBlock.Text = string.Empty;
+
+        UpdateAdaptiveLayout();
+    }
+
     private void UpdateAdaptiveLayout()
     {
         var scale = ResolveScale();

LanMountainDesktop/Views/Components/DailyWordWidget.axaml.cs

@@ -31,6 +31,7 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         Interval = TimeSpan.FromHours(6)
     };
 
+    private readonly bool _isDesignModePreview = Design.IsDesignMode;
     private LanMountainDesktop.PluginSdk.ISettingsService _appSettingsService = LanMountainDesktop.Services.Settings.HostSettingsFacadeProvider.GetOrCreate().Settings;
     private IComponentInstanceSettingsStore _componentSettingsService = HostComponentSettingsStoreProvider.GetOrCreate();
     private readonly LocalizationService _localizationService = new();
@@ -55,12 +56,19 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         ExampleTranslationTextBlock.FontFamily = MiSansFontFamily;
         StatusTextBlock.FontFamily = MiSansFontFamily;
 
+        SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
+        if (_isDesignModePreview)
+        {
+            ApplyCellSize(_currentCellSize);
+            ApplyDesignTimePreview();
+            return;
+        }
+
         _refreshTimer.Tick += OnRefreshTimerTick;
         RefreshButton.Click += OnRefreshButtonClick;
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
-        SizeChanged += OnSizeChanged;
-        ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
         ApplyCellSize(_currentCellSize);
         UpdateLanguageCode();
@@ -175,6 +183,12 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
 
     private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
     {
+        if (_isDesignModePreview)
+        {
+            e.Handled = true;
+            return;
+        }
+
         if (_isRefreshing)
         {
             return;
@@ -284,6 +298,26 @@ public partial class DailyWordWidget : UserControl, IDesktopComponentWidget, IRe
         UpdateAdaptiveLayout();
     }
 
+    private void ApplyDesignTimePreview()
+    {
+        _isNightVisual = ResolveNightMode();
+        ApplyNightModeVisual();
+
+        WordTextBlock.Text = "serendipity";
+        PronunciationTextBlock.Text = "UK /,seren'dipiti/ | US /,seren'dipiti/";
+        MeaningTextBlock.Text = "n. finding something valuable by accident; a pleasant surprise.";
+        ExampleTextBlock.Text = "The widget preview became useful by pure serendipity.";
+        ExampleTranslationTextBlock.Text = "A mocked sample sentence shown only in design mode.";
+        StatusTextBlock.Text = string.Empty;
+        StatusTextBlock.IsVisible = false;
+
+        RefreshButton.IsEnabled = false;
+        RefreshButton.Opacity = 1.0;
+        RefreshIcon.Opacity = 0.82;
+
+        UpdateAdaptiveLayout();
+    }
+
     private void UpdateAdaptiveLayout()
     {
         var scale = ResolveScale();

LanMountainDesktop/Views/Components/OfficeRecentDocumentsWidget.axaml

@@ -10,7 +10,7 @@
              x:Class="LanMountainDesktop.Views.Components.OfficeRecentDocumentsWidget">
 
     <Border x:Name="RootBorder"
-            CornerRadius="{DynamicResource DesignCornerRadiusIsland}"
+            CornerRadius="{DynamicResource DesignCornerRadiusLg}"
             Background="#2D5A8E"
             ClipToBounds="True"
             BorderThickness="0"

LanMountainDesktop/Views/Components/WeatherClockWidget.axaml.cs

@@ -213,10 +213,17 @@ public partial class WeatherClockWidget : UserControl, IDesktopComponentWidget,
             ContentGrid.ColumnDefinitions[1].Width = new GridLength(showDial ? dialSize : 0, GridUnitType.Pixel);
         }
 
-        var leftWidthFactor = Math.Clamp(leftContentWidth / 122d, 0.48, 1.35);
+        var timeTextWidth = leftContentWidth * 0.92;
-        TimeTextBlock.FontSize = Math.Clamp((metrics.PrimaryTemperatureFont * 0.74) * scale * compactFactor * leftWidthFactor, 10, 62);
+        var timeCharCount = 5;
-        DateTextBlock.FontSize = Math.Clamp(metrics.SecondaryTextFont * scale * compactFactor * leftWidthFactor, 8, 30);
+        var maxTimeFontSize = timeTextWidth / (timeCharCount * 0.58);
-        var weatherIconSize = Math.Clamp(metrics.IconFont * scale * compactFactor * leftWidthFactor, 9, 32);
+        var baseTimeFontSize = Math.Clamp(maxTimeFontSize, 12, 48);
+        var timeFontSize = Math.Clamp(baseTimeFontSize * scale * compactFactor, 10, 48);
+        TimeTextBlock.FontSize = timeFontSize;
+        
+        var dateFontSize = Math.Clamp(timeFontSize * 0.48, 8, 22);
+        DateTextBlock.FontSize = dateFontSize;
+        
+        var weatherIconSize = Math.Clamp(dateFontSize * 1.1, 10, 24);
         WeatherIconImage.Width = weatherIconSize;
         WeatherIconImage.Height = weatherIconSize;
 
@@ -226,11 +233,11 @@ public partial class WeatherClockWidget : UserControl, IDesktopComponentWidget,
         LeftStack.Width = leftContentWidth;
         LeftStack.MaxWidth = leftContentWidth;
         DateWeatherStack.MaxWidth = leftContentWidth;
-        TimeTextBlock.MaxWidth = leftContentWidth;
+        TimeTextBlock.MaxWidth = timeTextWidth;
 
-        var showDateLine = leftContentWidth >= Math.Max(40, TimeTextBlock.FontSize * 1.72);
+        var showDateLine = leftContentWidth >= Math.Max(36, timeFontSize * 1.4) && contentHeight >= 38;
         DateWeatherStack.IsVisible = showDateLine;
-        WeatherIconImage.IsVisible = showDateLine && leftContentWidth >= Math.Max(56, DateTextBlock.FontSize * 2.4);
+        WeatherIconImage.IsVisible = showDateLine && leftContentWidth >= Math.Max(48, dateFontSize * 3.2);
 
         var dateReservedWidth = WeatherIconImage.IsVisible
             ? weatherIconSize + DateWeatherStack.Spacing
@@ -477,14 +484,22 @@ public partial class WeatherClockWidget : UserControl, IDesktopComponentWidget,
             : CreateBrush("#F8FAFF");
         AnalogDialBorder.BorderBrush = CreateBrush(isNightMode ? "#34DDE7FF" : "#12000000");
 
-        TimeTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
+        if (isNightMode)
-            isNightMode ? "#F8FBFF" : "#10131A",
+        {
-            backgroundSamples,
+            TimeTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            WeatherTypographyAccessibility.WcagLargeTextContrast);
+                "#F8FBFF",
-        DateTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
+                backgroundSamples,
-            isNightMode ? "#BCC8DD" : "#7A7E87",
+                WeatherTypographyAccessibility.WcagLargeTextContrast);
-            backgroundSamples,
+            DateTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            WeatherTypographyAccessibility.WcagNormalTextContrast);
+                "#BCC8DD",
+                backgroundSamples,
+                WeatherTypographyAccessibility.WcagNormalTextContrast);
+        }
+        else
+        {
+            TimeTextBlock.Foreground = CreateBrush("#10131A");
+            DateTextBlock.Foreground = CreateBrush("#7A7E87");
+        }
 
         _hourHandLine.Stroke = CreateBrush(isNightMode ? "#F1F5FF" : "#232938");
         _minuteHandLine.Stroke = CreateBrush(isNightMode ? "#D6E0F2" : "#2F3749");

LanMountainDesktop/Views/Components/WeatherWidget.axaml.cs

@@ -95,6 +95,7 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, IDesk
         Interval = FluttermotionToken.WeatherAnimationFrameInterval
     };
 
+    private readonly bool _isDesignModePreview = Design.IsDesignMode;
     private LanMountainDesktop.PluginSdk.ISettingsService _settingsService = LanMountainDesktop.Services.Settings.HostSettingsFacadeProvider.GetOrCreate().Settings;
     private IComponentInstanceSettingsStore _componentSettingsStore = HostComponentSettingsStoreProvider.GetOrCreate();
     private readonly LocalizationService _localizationService = new();
@@ -128,11 +129,19 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, IDesk
         InitializeComponent();
         InitializeMotionTransform();
 
+        SizeChanged += OnSizeChanged;
+        if (_isDesignModePreview)
+        {
+            InitializeParticleVisuals();
+            ApplyCellSize(_currentCellSize);
+            ApplyDesignTimePreview();
+            return;
+        }
+
         _refreshTimer.Tick += OnRefreshTimerTick;
         _backgroundAnimationTimer.Tick += OnBackgroundAnimationTick;
         AttachedToVisualTree += OnAttachedToVisualTree;
         DetachedFromVisualTree += OnDetachedFromVisualTree;
-        SizeChanged += OnSizeChanged;
 
         InitializeParticleVisuals();
         ApplyVisualTheme(WeatherVisualKind.ClearDay);
@@ -512,6 +521,29 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, IDesk
         _latestSnapshot = null;
     }
 
+    private void ApplyDesignTimePreview()
+    {
+        const WeatherVisualKind previewVisualKind = WeatherVisualKind.PartlyCloudyDay;
+
+        _languageCode = "en-US";
+        _latestSnapshot = null;
+
+        ApplyVisualTheme(previewVisualKind);
+        SetWeatherIcon(
+            HyperOS3WeatherTheme.ResolveHeroIconAsset(HyperOS3WeatherVisualKind.PartlyCloudyDay),
+            previewVisualKind);
+        SetLoadingSkeleton(false);
+
+        CityTextBlock.Text = "Shenzhen Bay";
+        ConditionTextBlock.Text = "Partly cloudy";
+        TemperatureTextBlock.Text = "24°";
+        RangeTextBlock.Text = "28°/20°";
+
+        ResetAnimationState();
+        ResetParticles();
+        ApplyAdaptiveTypography();
+    }
+
     private void ApplyVisualTheme(WeatherVisualKind kind)
     {
         _activeVisualKind = kind;

LanMountainDesktop/Views/MainWindow.SettingsHardCut.Stubs.cs

@@ -215,17 +215,21 @@ public partial class MainWindow
         string? savedWallpaperPath,
         string? type = null,
         string? color = null,
-        string? placement = null)
+        string? placement = null,
+        int systemWallpaperRefreshIntervalSeconds = 300)
     {
         _wallpaperPath = string.IsNullOrWhiteSpace(savedWallpaperPath) ? null : savedWallpaperPath;
         _wallpaperType = string.IsNullOrWhiteSpace(type) ? "Image" : type.Trim();
         _wallpaperPlacement = WallpaperImageBrushFactory.NormalizePlacement(placement);
         _wallpaperSolidColor = TryParseColor(color, out var parsedColor) ? parsedColor : null;
         _wallpaperDisplayState = WallpaperDisplayState.NoWallpaperConfigured;
+        _systemWallpaperRefreshIntervalSeconds = systemWallpaperRefreshIntervalSeconds;
 
         _wallpaperBitmap?.Dispose();
         _wallpaperBitmap = null;
 
+        StopSystemWallpaperTimer();
+
         if (string.Equals(_wallpaperType, "SolidColor", StringComparison.OrdinalIgnoreCase))
         {
             _wallpaperMediaType = WallpaperMediaType.SolidColor;
@@ -235,6 +239,14 @@ public partial class MainWindow
             return;
         }
 
+        if (string.Equals(_wallpaperType, "SystemWallpaper", StringComparison.OrdinalIgnoreCase))
+        {
+            _wallpaperMediaType = WallpaperMediaType.Image;
+            LoadSystemWallpaper();
+            StartSystemWallpaperTimer();
+            return;
+        }
+
         if (string.IsNullOrWhiteSpace(_wallpaperPath))
         {
             _wallpaperMediaType = WallpaperMediaType.None;
@@ -273,6 +285,69 @@ public partial class MainWindow
         }
     }
 
+    private void LoadSystemWallpaper()
+    {
+        var systemPath = _systemWallpaperProvider.GetWallpaperPath();
+        if (string.IsNullOrWhiteSpace(systemPath) || !File.Exists(systemPath))
+        {
+            _wallpaperDisplayState = WallpaperDisplayState.TemporarilyUnavailable;
+            _wallpaperBitmap?.Dispose();
+            _wallpaperBitmap = null;
+            return;
+        }
+
+        try
+        {
+            using var stream = File.OpenRead(systemPath);
+            _wallpaperBitmap?.Dispose();
+            _wallpaperBitmap = new Bitmap(stream);
+            _wallpaperPath = systemPath;
+            _wallpaperDisplayState = WallpaperDisplayState.CurrentValidWallpaper;
+            CacheLastValidWallpaperBitmap(systemPath);
+        }
+        catch
+        {
+            _wallpaperDisplayState = WallpaperDisplayState.TemporarilyUnavailable;
+            _wallpaperBitmap?.Dispose();
+            _wallpaperBitmap = null;
+        }
+    }
+
+    private void StartSystemWallpaperTimer()
+    {
+        StopSystemWallpaperTimer();
+
+        var intervalSeconds = Math.Clamp(_systemWallpaperRefreshIntervalSeconds, 30, 86400);
+        _systemWallpaperRefreshTimer = new DispatcherTimer
+        {
+            Interval = TimeSpan.FromSeconds(intervalSeconds)
+        };
+        _systemWallpaperRefreshTimer.Tick += OnSystemWallpaperRefreshTimerTick;
+        _systemWallpaperRefreshTimer.Start();
+    }
+
+    private void StopSystemWallpaperTimer()
+    {
+        if (_systemWallpaperRefreshTimer is not null)
+        {
+            _systemWallpaperRefreshTimer.Stop();
+            _systemWallpaperRefreshTimer.Tick -= OnSystemWallpaperRefreshTimerTick;
+            _systemWallpaperRefreshTimer = null;
+        }
+    }
+
+    private void OnSystemWallpaperRefreshTimerTick(object? sender, EventArgs e)
+    {
+        if (!string.Equals(_wallpaperType, "SystemWallpaper", StringComparison.OrdinalIgnoreCase))
+        {
+            StopSystemWallpaperTimer();
+            return;
+        }
+
+        LoadSystemWallpaper();
+        ApplyWallpaperBrush();
+    }
+
     private void ApplyWallpaperBrush()
     {
         DesktopWallpaperImageLayer.Background = null;
@@ -480,7 +555,8 @@ public partial class MainWindow
                 snapshot.WallpaperPath,
                 snapshot.WallpaperType,
                 snapshot.WallpaperColor,
-                snapshot.WallpaperPlacement);
+                snapshot.WallpaperPlacement,
+                snapshot.SystemWallpaperRefreshIntervalSeconds);
             if (!snapshot.IsNightMode.HasValue)
             {
                 _isNightMode = CalculateCurrentBackgroundLuminance() < LightBackgroundLuminanceThreshold;
@@ -523,6 +599,7 @@ public partial class MainWindow
                 ? latestWallpaperState.Color
                 : null,
             WallpaperPlacement = latestWallpaperState.Placement,
+            SystemWallpaperRefreshIntervalSeconds = latestWallpaperState.SystemWallpaperRefreshIntervalSeconds,
             LanguageCode = _languageCode,
             TimeZoneId = _timeZoneService.CurrentTimeZone.Id,
             WeatherLocationMode = latestWeatherState.LocationMode,

LanMountainDesktop/Views/MainWindow.axaml.cs

@@ -122,6 +122,9 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     private Color? _wallpaperSolidColor;
     private string? _wallpaperPath;
     private string _wallpaperStatus = "Current background uses solid color.";
+    private int _systemWallpaperRefreshIntervalSeconds = 300;
+    private DispatcherTimer? _systemWallpaperRefreshTimer;
+    private readonly ISystemWallpaperProvider _systemWallpaperProvider = HostSystemWallpaperProvider.GetOrCreate();
     private IReadOnlyList<Color> _recommendedColors = Array.Empty<Color>();
     private IReadOnlyList<Color> _monetColors = Array.Empty<Color>();
     private Color _selectedThemeColor = Color.Parse("#FF3B82F6");
@@ -160,7 +163,9 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
 
     public MainWindow()
     {
-        var pluginRuntimeService = (Application.Current as App)?.PluginRuntimeService;
+        var pluginRuntimeService = Design.IsDesignMode
+            ? null
+            : (Application.Current as App)?.PluginRuntimeService;
         _componentRegistry = DesktopComponentRegistryFactory.Create(pluginRuntimeService);
         _settingsService = _settingsFacade.Settings;
         _gridSettingsService = _settingsFacade.Grid;
@@ -173,7 +178,6 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
 
         InitializeComponent();
         Icon = _appLogoService.CreateWindowIcon();
-        InitializeTaskbarProfileFlyout();
         _componentRuntimeRegistry = DesktopComponentRegistryFactory.CreateRuntimeRegistry(
             _componentRegistry,
             pluginRuntimeService,
@@ -183,6 +187,14 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
             pluginRuntimeService);
         _componentLibraryService = new ComponentLibraryService(_componentRegistry, _componentRuntimeRegistry);
         _componentEditorWindowService = new ComponentEditorWindowService(_settingsFacade);
+
+        if (Design.IsDesignMode)
+        {
+            ApplyDesignTimePreview();
+            return;
+        }
+
+        InitializeTaskbarProfileFlyout();
         _fluentAvaloniaTheme = Application.Current?.Styles.OfType<FluentAvaloniaTheme>().FirstOrDefault();
         _settingsService.Changed += OnSettingsChanged;
         _appearanceThemeService.Changed += OnAppearanceThemeChanged;
@@ -196,6 +208,170 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
         }
     }
 
+    private void ApplyDesignTimePreview()
+    {
+        Title = "LanMountainDesktop Preview";
+        ShowInTaskbar = false;
+        DesktopWallpaperLayer.Background = new LinearGradientBrush
+        {
+            StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+            EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+            GradientStops = new GradientStops
+            {
+                new GradientStop(Color.Parse("#FFF6F8FB"), 0d),
+                new GradientStop(Color.Parse("#FFE9EEF7"), 0.55d),
+                new GradientStop(Color.Parse("#FFDCE5F3"), 1d)
+            }
+        };
+        DesktopWallpaperImageLayer.IsVisible = false;
+        LauncherPagePanel.IsVisible = false;
+        ComponentLibraryWindow.IsVisible = false;
+
+        BackToWindowsTextBlock.Text = "Back to Windows";
+        ComponentLibraryTitleTextBlock.Text = "Widgets";
+        ComponentLibraryBackTextBlock.Text = "Back";
+        TaskbarProfileDisplayNameTextBlock.Text = "Preview User";
+        TaskbarProfileSettingsActionTextBlock.Text = "Settings";
+        TaskbarProfileDesktopEditActionTextBlock.Text = "Edit Desktop";
+        TaskbarProfileAvatarFallbackText.Text = "P";
+        TaskbarProfileHeaderAvatarFallbackText.Text = "P";
+        TaskbarProfileButton.IsEnabled = false;
+        TaskbarProfilePopup.IsOpen = false;
+
+        ClockWidget.IsVisible = true;
+        ClockWidget.SetDisplayFormat(ClockDisplayFormat.HourMinute);
+        ClockWidget.SetTransparentBackground(false);
+
+        ConfigureDesignTimeDesktopGrid();
+        PopulateDesignTimeDesktopSurface();
+    }
+
+    private void ConfigureDesignTimeDesktopGrid()
+    {
+        const int previewRows = 7;
+        const int previewColumns = 12;
+
+        DesktopGrid.RowDefinitions.Clear();
+        DesktopGrid.ColumnDefinitions.Clear();
+
+        for (var row = 0; row < previewRows; row++)
+        {
+            DesktopGrid.RowDefinitions.Add(new RowDefinition(new GridLength(1, GridUnitType.Star)));
+        }
+
+        for (var column = 0; column < previewColumns; column++)
+        {
+            DesktopGrid.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(1, GridUnitType.Star)));
+        }
+
+        DesktopGrid.Margin = new Thickness(28);
+        DesktopGrid.RowSpacing = 14;
+        DesktopGrid.ColumnSpacing = 14;
+        DesktopGrid.Width = double.NaN;
+        DesktopGrid.Height = double.NaN;
+
+        Grid.SetRow(TopStatusBarHost, 0);
+        Grid.SetColumn(TopStatusBarHost, 0);
+        Grid.SetRowSpan(TopStatusBarHost, 1);
+        Grid.SetColumnSpan(TopStatusBarHost, previewColumns);
+
+        Grid.SetRow(DesktopPagesViewport, 1);
+        Grid.SetColumn(DesktopPagesViewport, 0);
+        Grid.SetRowSpan(DesktopPagesViewport, previewRows - 2);
+        Grid.SetColumnSpan(DesktopPagesViewport, previewColumns);
+
+        Grid.SetRow(BottomTaskbarContainer, previewRows - 1);
+        Grid.SetColumn(BottomTaskbarContainer, 0);
+        Grid.SetRowSpan(BottomTaskbarContainer, 1);
+        Grid.SetColumnSpan(BottomTaskbarContainer, previewColumns);
+
+        DesktopPagesHost.ColumnDefinitions.Clear();
+        DesktopPagesHost.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(1, GridUnitType.Star)));
+
+        ClockWidget.ApplyCellSize(72);
+    }
+
+    private void PopulateDesignTimeDesktopSurface()
+    {
+        DesktopPagesContainer.Children.Clear();
+        DesktopPagesContainer.Width = double.NaN;
+        DesktopPagesContainer.Height = double.NaN;
+
+        DesktopPagesContainer.Children.Add(CreateDesignTimePreviewCard(
+            "Focus Clock",
+            "Compact widget preview",
+            32,
+            32,
+            300,
+            170,
+            "#FFFFFFFF",
+            "#FFE8EEF8"));
+        DesktopPagesContainer.Children.Add(CreateDesignTimePreviewCard(
+            "Weather",
+            "26°C  Qingdao",
+            360,
+            86,
+            260,
+            132,
+            "#FFF8FBFF",
+            "#FFDDE8F6"));
+        DesktopPagesContainer.Children.Add(CreateDesignTimePreviewCard(
+            "Study Session",
+            "Deep work · 48 min",
+            210,
+            248,
+            340,
+            144,
+            "#FFFDFEFF",
+            "#FFE7EEF7"));
+    }
+
+    private static Border CreateDesignTimePreviewCard(
+        string title,
+        string subtitle,
+        double left,
+        double top,
+        double width,
+        double height,
+        string backgroundColor,
+        string borderColor)
+    {
+        return new Border
+        {
+            Width = width,
+            Height = height,
+            Margin = new Thickness(left, top, 0, 0),
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            Background = new SolidColorBrush(Color.Parse(backgroundColor)),
+            BorderBrush = new SolidColorBrush(Color.Parse(borderColor)),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(28),
+            Child = new StackPanel
+            {
+                Margin = new Thickness(20),
+                Spacing = 8,
+                VerticalAlignment = VerticalAlignment.Center,
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = title,
+                        FontSize = 20,
+                        FontWeight = FontWeight.SemiBold,
+                        Foreground = new SolidColorBrush(Color.Parse("#FF1E293B"))
+                    },
+                    new TextBlock
+                    {
+                        Text = subtitle,
+                        FontSize = 13,
+                        Foreground = new SolidColorBrush(Color.Parse("#FF64748B"))
+                    }
+                }
+            }
+        };
+    }
+
     private void OnNightModeIsCheckedChanged(object? sender, RoutedEventArgs e)
     {
         if (sender is not ToggleButton toggleButton)
@@ -231,6 +407,14 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     protected override void OnOpened(EventArgs e)
     {
         base.OnOpened(e);
+
+        if (Design.IsDesignMode)
+        {
+            ConfigureDesignTimeDesktopGrid();
+            PopulateDesignTimeDesktopSurface();
+            return;
+        }
+
         SyncSettingsWindowState();
 
         _suppressSettingsPersistence = true;
@@ -307,6 +491,12 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
 
     protected override void OnClosed(EventArgs e)
     {
+        if (Design.IsDesignMode)
+        {
+            base.OnClosed(e);
+            return;
+        }
+
         var wasVisible = IsVisible;
         var windowState = WindowState.ToString();
 

LanMountainDesktop/Views/SettingsPages/AboutSettingsPage.axaml

@@ -62,15 +62,34 @@
                 </ui:InfoBar.IconSource>
             </ui:InfoBar>
 
-            <Border Classes="settings-section-card">
+            <!-- 版权声明 - 放在渲染显示前面 -->
-                <StackPanel Spacing="12">
+            <ui:SettingsExpander Header="版权声明"
-                    <controls:IconText Icon="WindowConsole"
+                                 IsExpanded="True">
-                                       Text="{Binding RenderBackendLabel}" />
+                <ui:SettingsExpander.IconSource>
-                    <TextBlock Classes="settings-item-description"
+                    <fi:SymbolIconSource Symbol="Document" />
-                               Text="{Binding RenderBackendText}"
+                </ui:SettingsExpander.IconSource>
-                               TextWrapping="Wrap" />
+                <ui:SettingsExpanderItem>
-                </StackPanel>
+                    <ui:SettingsExpanderItem.Footer>
-            </Border>
+                        <WrapPanel>
+                            <WrapPanel.Styles>
+                                <Style Selector="HyperlinkButton">
+                                    <Setter Property="Padding" Value="4" />
+                                    <Setter Property="Margin" Value="2" />
+                                </Style>
+                            </WrapPanel.Styles>
+                            <HyperlinkButton NavigateUri="https://github.com/wwiinnddyy/LanMountainDesktop">
+                                <TextBlock Text="GitHub 仓库" />
+                            </HyperlinkButton>
+                            <HyperlinkButton NavigateUri="https://github.com/wwiinnddyy/LanMountainDesktop/issues">
+                                <TextBlock Text="问题反馈" />
+                            </HyperlinkButton>
+                        </WrapPanel>
+                    </ui:SettingsExpanderItem.Footer>
+                    <TextBlock>
+                        <Run Text="Copyright (c) 2024-" /><Run Text="2025" /> Lincube
+                    </TextBlock>
+                </ui:SettingsExpanderItem>
+            </ui:SettingsExpander>
         </StackPanel>
     </ScrollViewer>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/GeneratedPluginSettingsPage.axaml.cs

@@ -12,12 +12,7 @@ namespace LanMountainDesktop.Views.SettingsPages;
 public partial class GeneratedPluginSettingsPage : SettingsPageBase
 {
     public GeneratedPluginSettingsPage()
-        : this(
+        : this(Design.IsDesignMode ? CreateDesignTimeViewModel() : CreateDefaultViewModel())
-            new PluginGeneratedSettingsPageViewModel(
-                HostSettingsFacadeProvider.GetOrCreate().Settings,
-                string.Empty,
-                new PluginSettingsSectionRegistration("_preview", "preview", []),
-                new PluginLocalizer(AppContext.BaseDirectory, "en-US")))
     {
     }
 
@@ -223,4 +218,272 @@ public partial class GeneratedPluginSettingsPage : SettingsPageBase
 
         return textBox;
     }
+
+    private static PluginGeneratedSettingsPageViewModel CreateDefaultViewModel()
+    {
+        return new PluginGeneratedSettingsPageViewModel(
+            HostSettingsFacadeProvider.GetOrCreate().Settings,
+            string.Empty,
+            new PluginSettingsSectionRegistration("_preview", "preview", []),
+            new PluginLocalizer(AppContext.BaseDirectory, "en-US"));
+    }
+
+    private static PluginGeneratedSettingsPageViewModel CreateDesignTimeViewModel()
+    {
+        const string pluginId = "preview.plugin";
+        var settingsService = new DesignTimeSettingsService();
+        var section = new PluginSettingsSectionRegistration(
+            "desktop_preview",
+            "Preview Widget Settings",
+            [
+                new SettingsOptionDefinition(
+                    "enable_glow",
+                    SettingsOptionType.Toggle,
+                    "Enable glow",
+                    "Adds a soft highlight around the preview widget.",
+                    true),
+                new SettingsOptionDefinition(
+                    "refresh_minutes",
+                    SettingsOptionType.Number,
+                    "Refresh interval",
+                    "How often the plugin refreshes its cached content.",
+                    30d,
+                    minimum: 5d,
+                    maximum: 120d),
+                new SettingsOptionDefinition(
+                    "layout_density",
+                    SettingsOptionType.Select,
+                    "Layout density",
+                    "Choose how compact the widget layout should feel.",
+                    "balanced",
+                    [
+                        new SettingsOptionChoice("compact", "Compact"),
+                        new SettingsOptionChoice("balanced", "Balanced"),
+                        new SettingsOptionChoice("comfortable", "Comfortable")
+                    ]),
+                new SettingsOptionDefinition(
+                    "content_path",
+                    SettingsOptionType.Path,
+                    "Content folder",
+                    "Local folder used by the plugin for mock assets.",
+                    @"C:\Preview\PluginAssets"),
+                new SettingsOptionDefinition(
+                    "keywords",
+                    SettingsOptionType.List,
+                    "Pinned keywords",
+                    "Comma-separated topics that will be emphasized in the widget.",
+                    new[] { "avalonia", "preview", "design-time" })
+            ],
+            "Mock plugin settings shown only in Avalonia design mode.");
+
+        settingsService.SetValue(
+            SettingsScope.Plugin,
+            "enable_glow",
+            true,
+            pluginId,
+            sectionId: section.Id);
+        settingsService.SetValue(
+            SettingsScope.Plugin,
+            "refresh_minutes",
+            30d,
+            pluginId,
+            sectionId: section.Id);
+        settingsService.SetValue(
+            SettingsScope.Plugin,
+            "layout_density",
+            "balanced",
+            pluginId,
+            sectionId: section.Id);
+        settingsService.SetValue(
+            SettingsScope.Plugin,
+            "content_path",
+            @"C:\Preview\PluginAssets",
+            pluginId,
+            sectionId: section.Id);
+        settingsService.SetValue(
+            SettingsScope.Plugin,
+            "keywords",
+            new[] { "avalonia", "preview", "design-time" },
+            pluginId,
+            sectionId: section.Id);
+
+        return new PluginGeneratedSettingsPageViewModel(
+            settingsService,
+            pluginId,
+            section,
+            new PluginLocalizer(AppContext.BaseDirectory, "en-US"));
+    }
+
+    private sealed class DesignTimeSettingsService : ISettingsService
+    {
+        private readonly Dictionary<string, object?> _values = new(StringComparer.OrdinalIgnoreCase);
+
+        public event EventHandler<SettingsChangedEvent>? Changed;
+
+        public T LoadSnapshot<T>(SettingsScope scope, string? subjectId = null, string? placementId = null) where T : new()
+            => new();
+
+        public void SaveSnapshot<T>(
+            SettingsScope scope,
+            T snapshot,
+            string? subjectId = null,
+            string? placementId = null,
+            string? sectionId = null,
+            IReadOnlyCollection<string>? changedKeys = null)
+        {
+            RaiseChanged(scope, subjectId, placementId, sectionId, changedKeys);
+        }
+
+        public T LoadSection<T>(
+            SettingsScope scope,
+            string subjectId,
+            string sectionId,
+            string? placementId = null) where T : new()
+            => new();
+
+        public void SaveSection<T>(
+            SettingsScope scope,
+            string subjectId,
+            string sectionId,
+            T section,
+            string? placementId = null,
+            IReadOnlyCollection<string>? changedKeys = null)
+        {
+            RaiseChanged(scope, subjectId, placementId, sectionId, changedKeys);
+        }
+
+        public void DeleteSection(
+            SettingsScope scope,
+            string subjectId,
+            string sectionId,
+            string? placementId = null)
+        {
+            var prefix = BuildStorageKey(scope, subjectId, placementId, sectionId, key: null);
+            foreach (var existingKey in _values.Keys.Where(key => key.StartsWith(prefix, StringComparison.OrdinalIgnoreCase)).ToArray())
+            {
+                _values.Remove(existingKey);
+            }
+
+            RaiseChanged(scope, subjectId, placementId, sectionId, changedKeys: null);
+        }
+
+        public T? GetValue<T>(
+            SettingsScope scope,
+            string key,
+            string? subjectId = null,
+            string? placementId = null,
+            string? sectionId = null)
+        {
+            return _values.TryGetValue(BuildStorageKey(scope, subjectId, placementId, sectionId, key), out var value)
+                ? ConvertValue<T>(value)
+                : default;
+        }
+
+        public void SetValue<T>(
+            SettingsScope scope,
+            string key,
+            T value,
+            string? subjectId = null,
+            string? placementId = null,
+            string? sectionId = null,
+            IReadOnlyCollection<string>? changedKeys = null)
+        {
+            _values[BuildStorageKey(scope, subjectId, placementId, sectionId, key)] = value;
+            RaiseChanged(scope, subjectId, placementId, sectionId, changedKeys ?? [key]);
+        }
+
+        public IComponentSettingsAccessor GetComponentAccessor(string componentId, string? placementId)
+        {
+            return new DesignTimeComponentSettingsAccessor(this, componentId, placementId);
+        }
+
+        private static T? ConvertValue<T>(object? value)
+        {
+            if (value is null)
+            {
+                return default;
+            }
+
+            if (value is T typedValue)
+            {
+                return typedValue;
+            }
+
+            var targetType = Nullable.GetUnderlyingType(typeof(T)) ?? typeof(T);
+            try
+            {
+                return (T?)Convert.ChangeType(value, targetType);
+            }
+            catch
+            {
+                return default;
+            }
+        }
+
+        private static string BuildStorageKey(
+            SettingsScope scope,
+            string? subjectId,
+            string? placementId,
+            string? sectionId,
+            string? key)
+        {
+            return string.Join(
+                "|",
+                scope,
+                subjectId ?? string.Empty,
+                placementId ?? string.Empty,
+                sectionId ?? string.Empty,
+                key ?? string.Empty);
+        }
+
+        private void RaiseChanged(
+            SettingsScope scope,
+            string? subjectId,
+            string? placementId,
+            string? sectionId,
+            IReadOnlyCollection<string>? changedKeys)
+        {
+            Changed?.Invoke(this, new SettingsChangedEvent(scope, subjectId, placementId, sectionId, changedKeys));
+        }
+    }
+
+    private sealed class DesignTimeComponentSettingsAccessor : IComponentSettingsAccessor
+    {
+        private readonly DesignTimeSettingsService _settingsService;
+
+        public DesignTimeComponentSettingsAccessor(
+            DesignTimeSettingsService settingsService,
+            string componentId,
+            string? placementId)
+        {
+            _settingsService = settingsService;
+            ComponentId = componentId;
+            PlacementId = placementId;
+        }
+
+        public string ComponentId { get; }
+
+        public string? PlacementId { get; }
+
+        public T LoadSnapshot<T>() where T : new()
+            => _settingsService.LoadSnapshot<T>(SettingsScope.ComponentInstance, ComponentId, PlacementId);
+
+        public void SaveSnapshot<T>(T snapshot, IReadOnlyCollection<string>? changedKeys = null)
+            => _settingsService.SaveSnapshot(SettingsScope.ComponentInstance, snapshot, ComponentId, PlacementId, changedKeys: changedKeys);
+
+        public T LoadSection<T>(string sectionId) where T : new()
+            => _settingsService.LoadSection<T>(SettingsScope.ComponentInstance, ComponentId, sectionId, PlacementId);
+
+        public void SaveSection<T>(string sectionId, T section, IReadOnlyCollection<string>? changedKeys = null)
+            => _settingsService.SaveSection(SettingsScope.ComponentInstance, ComponentId, sectionId, section, PlacementId, changedKeys);
+
+        public void DeleteSection(string sectionId)
+            => _settingsService.DeleteSection(SettingsScope.ComponentInstance, ComponentId, sectionId, PlacementId);
+
+        public T? GetValue<T>(string key)
+            => _settingsService.GetValue<T>(SettingsScope.ComponentInstance, key, ComponentId, PlacementId);
+
+        public void SetValue<T>(string key, T value, IReadOnlyCollection<string>? changedKeys = null)
+            => _settingsService.SetValue(SettingsScope.ComponentInstance, key, value, ComponentId, PlacementId, changedKeys: changedKeys);
+    }
 }

LanMountainDesktop/Views/SettingsPages/PluginMarketSettingsPage.axaml.cs

@@ -1,3 +1,5 @@
+using System;
+using Avalonia.Controls;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.PluginMarket;
@@ -17,7 +19,7 @@ namespace LanMountainDesktop.Views.SettingsPages;
 public partial class PluginMarketSettingsPage : SettingsPageBase
 {
     public PluginMarketSettingsPage()
-        : this(CreateDefaultViewModel())
+        : this(Design.IsDesignMode ? CreateDesignTimeViewModel() : CreateDefaultViewModel())
     {
     }
 
@@ -34,6 +36,11 @@ public partial class PluginMarketSettingsPage : SettingsPageBase
 
     public override async void OnNavigatedTo(object? parameter)
     {
+        if (Design.IsDesignMode)
+        {
+            return;
+        }
+
         await ViewModel.InitializeAsync();
     }
 
@@ -48,6 +55,113 @@ public partial class PluginMarketSettingsPage : SettingsPageBase
             new AirAppMarketReadmeService());
     }
 
+    private static PluginMarketSettingsPageViewModel CreateDesignTimeViewModel()
+    {
+        var settingsFacade = HostSettingsFacadeProvider.GetOrCreate();
+        var localizationService = new LocalizationService();
+        var viewModel = new PluginMarketSettingsPageViewModel(
+            settingsFacade,
+            localizationService,
+            new AirAppMarketIconService(),
+            new AirAppMarketReadmeService());
+
+        var previewHostVersion = new Version(1, 2, 0);
+        var items = new[]
+        {
+            CreateMarketItem(
+                new PluginMarketPluginInfo(
+                    "news-tiles",
+                    "News Tiles",
+                    "Brings editorial news cards and ticker rows to the desktop.",
+                    "LanMountain Labs",
+                    "1.2.0",
+                    "1.0.0",
+                    "1.0.0",
+                    "https://example.com/news-tiles.zip",
+                    "v1.2.0",
+                    "news-tiles.zip",
+                    string.Empty,
+                    "https://example.com/news-tiles/readme",
+                    "https://example.com/news-tiles",
+                    "https://example.com/news-tiles/repo",
+                    ["news", "widgets"],
+                    [],
+                    DateTimeOffset.Now.AddDays(-8),
+                    DateTimeOffset.Now.AddDays(-2)),
+                localizationService,
+                installedPlugin: null,
+                previewHostVersion),
+            CreateMarketItem(
+                new PluginMarketPluginInfo(
+                    "workspace-pulse",
+                    "Workspace Pulse",
+                    "Tracks active projects and shows a compact productivity summary.",
+                    "Studio North",
+                    "2.4.0",
+                    "1.0.0",
+                    "1.0.0",
+                    "https://example.com/workspace-pulse.zip",
+                    "v2.4.0",
+                    "workspace-pulse.zip",
+                    string.Empty,
+                    "https://example.com/workspace-pulse/readme",
+                    "https://example.com/workspace-pulse",
+                    "https://example.com/workspace-pulse/repo",
+                    ["dashboard", "productivity"],
+                    [],
+                    DateTimeOffset.Now.AddDays(-30),
+                    DateTimeOffset.Now.AddDays(-1)),
+                localizationService,
+                new InstalledPluginInfo(
+                    new PluginManifest(
+                        "workspace-pulse",
+                        "Workspace Pulse",
+                        "WorkspacePulse.dll",
+                        "Tracks active projects and shows a compact productivity summary.",
+                        "Studio North",
+                        "2.1.0"),
+                    true,
+                    true,
+                    true,
+                    null),
+                previewHostVersion),
+            CreateMarketItem(
+                new PluginMarketPluginInfo(
+                    "glass-panels",
+                    "Glass Panels",
+                    "Adds experimental acrylic surfaces for plugin-powered widgets.",
+                    "Aster Team",
+                    "0.8.0",
+                    "1.0.0",
+                    "9.0.0",
+                    "https://example.com/glass-panels.zip",
+                    "v0.8.0",
+                    "glass-panels.zip",
+                    string.Empty,
+                    "https://example.com/glass-panels/readme",
+                    "https://example.com/glass-panels",
+                    "https://example.com/glass-panels/repo",
+                    ["theme", "experimental"],
+                    [],
+                    DateTimeOffset.Now.AddDays(-12),
+                    DateTimeOffset.Now.AddDays(-3)),
+                localizationService,
+                installedPlugin: null,
+                previewHostVersion)
+        };
+
+        foreach (var item in items)
+        {
+            viewModel.MarketPlugins.Add(item);
+            viewModel.FilteredPlugins.Add(item);
+        }
+
+        viewModel.ShowEmptyState = false;
+        viewModel.EmptyStateText = string.Empty;
+        viewModel.StatusMessage = "Showing 3 mocked marketplace plugins for Avalonia design mode.";
+        return viewModel;
+    }
+
     private void OnRestartRequested(string? reason)
     {
         RequestRestart(reason ?? ViewModel.RestartRequiredMessage);
@@ -60,4 +174,17 @@ public partial class PluginMarketSettingsPage : SettingsPageBase
         OpenDrawer(drawer, detailViewModel.DrawerTitle);
         await detailViewModel.InitializeAsync();
     }
+
+    private static PluginMarketItemViewModel CreateMarketItem(
+        PluginMarketPluginInfo plugin,
+        LocalizationService localizationService,
+        InstalledPluginInfo? installedPlugin,
+        Version hostVersion)
+    {
+        var languageCode = localizationService.NormalizeLanguageCode(
+            HostSettingsFacadeProvider.GetOrCreate().Region.Get().LanguageCode);
+        var item = new PluginMarketItemViewModel(plugin, localizationService, languageCode);
+        item.ApplyInstallState(installedPlugin, hostVersion);
+        return item;
+    }
 }

LanMountainDesktop/Views/SettingsPages/PluginsSettingsPage.axaml.cs

@@ -1,3 +1,4 @@
+using Avalonia.Controls;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.ViewModels;
@@ -15,7 +16,7 @@ namespace LanMountainDesktop.Views.SettingsPages;
 public partial class PluginsSettingsPage : SettingsPageBase
 {
     public PluginsSettingsPage()
-        : this(new PluginsSettingsPageViewModel(HostSettingsFacadeProvider.GetOrCreate()))
+        : this(Design.IsDesignMode ? CreateDesignTimeViewModel() : new PluginsSettingsPageViewModel(HostSettingsFacadeProvider.GetOrCreate()))
     {
     }
 
@@ -31,6 +32,11 @@ public partial class PluginsSettingsPage : SettingsPageBase
 
     public override async void OnNavigatedTo(object? parameter)
     {
+        if (Design.IsDesignMode)
+        {
+            return;
+        }
+
         await ViewModel.InitializeAsync();
     }
 
@@ -38,4 +44,47 @@ public partial class PluginsSettingsPage : SettingsPageBase
     {
         RequestRestart(ViewModel.RestartRequiredMessage);
     }
+
+    private static PluginsSettingsPageViewModel CreateDesignTimeViewModel()
+    {
+        var viewModel = new PluginsSettingsPageViewModel(HostSettingsFacadeProvider.GetOrCreate());
+        viewModel.InstalledPlugins.Add(new InstalledPluginItemViewModel(new InstalledPluginInfo(
+            new PluginManifest(
+                "calendar-plus",
+                "Calendar Plus",
+                "CalendarPlus.dll",
+                "Adds a compact agenda widget and richer date cards.",
+                "LanMountain Labs",
+                "1.4.0"),
+            true,
+            true,
+            true,
+            null)));
+        viewModel.InstalledPlugins.Add(new InstalledPluginItemViewModel(new InstalledPluginInfo(
+            new PluginManifest(
+                "focus-mode",
+                "Focus Mode",
+                "FocusMode.dll",
+                "Provides a distraction-free overlay and quick toggles.",
+                "Studio North",
+                "0.9.2"),
+            true,
+            false,
+            true,
+            null)));
+        viewModel.InstalledPlugins.Add(new InstalledPluginItemViewModel(new InstalledPluginInfo(
+            new PluginManifest(
+                "notes-dock",
+                "Notes Dock",
+                "NotesDock.dll",
+                "Pins short markdown notes directly on the desktop.",
+                "Aster Team",
+                "2.1.0"),
+            false,
+            false,
+            true,
+            null)));
+        viewModel.StatusMessage = "Loaded 3 mocked plugins for Avalonia design mode.";
+        return viewModel;
+    }
 }

LanMountainDesktop/Views/SettingsPages/PrivacySettingsPage.axaml

@@ -51,14 +51,9 @@
                                  FontFamily="Consolas"
                                  FontSize="12"
                                  Focusable="False"
-                                 IsTabStop="False" />
+                                 IsTabStop="False"
+                                 HorizontalAlignment="Stretch" />
                     </StackPanel>
-                    <Button Grid.Column="1"
-                            Content="{Binding RefreshTelemetryIdText}"
-                            Command="{Binding RefreshTelemetryIdCommand}"
-                            VerticalAlignment="Center"
-                            Margin="16,0,0,0"
-                            Classes="accent-button" />
                 </Grid>
             </Border>
 

LanMountainDesktop/Views/SettingsPages/WallpaperSettingsPage.axaml

@@ -29,6 +29,11 @@
                                 <!-- 纯色预览 -->
                                 <Border Background="{Binding SelectedColor}" 
                                         IsVisible="{Binding IsSolidColor}" />
+                                <!-- 系统壁纸预览 -->
+                                <Border Background="#FFF6F7F9"
+                                        IsVisible="{Binding IsSystemWallpaper}">
+                                    <Border Background="{Binding PreviewBrush}" />
+                                </Border>
                             </Panel>
                         </Border>
                     </Viewbox>
@@ -135,6 +140,19 @@
                         </Button>
                     </UniformGrid>
                 </StackPanel>
+
+                <!-- 右侧：系统壁纸状态 -->
+                <StackPanel Grid.Column="1" VerticalAlignment="Center" Spacing="12" IsVisible="{Binding IsSystemWallpaper}">
+                    <TextBlock Text="{Binding SystemWallpaperLabel}"
+                               FontSize="14"
+                               FontWeight="SemiBold"
+                               Opacity="0.8" />
+                    <TextBlock Text="{Binding SystemWallpaperStatus}"
+                               FontSize="12"
+                               Opacity="0.7"
+                               TextWrapping="Wrap"
+                               MaxWidth="280" />
+                </StackPanel>
             </Grid>
 
             <Separator Classes="settings-separator" Margin="0,0,0,24" />
@@ -183,10 +201,60 @@
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
 
-            <!-- 填充方式 -->
+            <!-- 系统壁纸刷新设置 -->
+            <ui:SettingsExpander Header="{Binding RefreshIntervalLabel}"
+                                 IsVisible="{Binding IsSystemWallpaper}"
+                                 Margin="0,4,0,0">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="Clock" />
+                </ui:SettingsExpander.IconSource>
+                <ui:SettingsExpander.Footer>
+                    <StackPanel Orientation="Horizontal" Spacing="8">
+                        <ComboBox Width="140"
+                                  ItemsSource="{Binding RefreshIntervals}"
+                                  SelectedItem="{Binding SelectedRefreshInterval}">
+                            <ComboBox.ItemTemplate>
+                                <DataTemplate x:DataType="vm:SelectionOption">
+                                    <TextBlock Text="{Binding Label}" />
+                                </DataTemplate>
+                            </ComboBox.ItemTemplate>
+                        </ComboBox>
+                        <Button Classes="settings-accent-button"
+                                Command="{Binding RefreshSystemWallpaperCommand}"
+                                ToolTip.Tip="{Binding RefreshButtonTooltip}"
+                                VerticalAlignment="Center"
+                                Padding="12,8">
+                            <fi:SymbolIcon Symbol="ArrowSync" IconVariant="Regular" />
+                        </Button>
+                    </StackPanel>
+                </ui:SettingsExpander.Footer>
+            </ui:SettingsExpander>
+
+            <!-- 填充方式（图片和系统壁纸都显示） -->
             <ui:SettingsExpander Header="{Binding WallpaperPlacementLabel}"
                                  Description="{Binding WallpaperPlacementDescription}"
-                                 IsVisible="{Binding IsImage}"
+                                 IsVisible="{Binding IsImageOrVideo}"
+                                 Margin="0,4,0,0">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="Maximize" />
+                </ui:SettingsExpander.IconSource>
+                <ui:SettingsExpander.Footer>
+                    <ComboBox Width="200"
+                              ItemsSource="{Binding WallpaperPlacements}"
+                              SelectedItem="{Binding SelectedWallpaperPlacement}">
+                        <ComboBox.ItemTemplate>
+                            <DataTemplate x:DataType="vm:SelectionOption">
+                                <TextBlock Text="{Binding Label}" />
+                            </DataTemplate>
+                        </ComboBox.ItemTemplate>
+                    </ComboBox>
+                </ui:SettingsExpander.Footer>
+            </ui:SettingsExpander>
+
+            <!-- 系统壁纸填充方式 -->
+            <ui:SettingsExpander Header="{Binding WallpaperPlacementLabel}"
+                                 Description="{Binding WallpaperPlacementDescription}"
+                                 IsVisible="{Binding IsSystemWallpaper}"
                                  Margin="0,4,0,0">
                 <ui:SettingsExpander.IconSource>
                     <fi:SymbolIconSource Symbol="Maximize" />

LanMountainDesktop/Views/SettingsPages/WeatherSettingsPage.axaml.cs

@@ -1,3 +1,4 @@
+using Avalonia.Controls;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
@@ -16,7 +17,7 @@ namespace LanMountainDesktop.Views.SettingsPages;
 public partial class WeatherSettingsPage : SettingsPageBase
 {
     public WeatherSettingsPage()
-        : this(CreateDefaultViewModel())
+        : this(Design.IsDesignMode ? CreateDesignTimeViewModel() : CreateDefaultViewModel())
     {
     }
 
@@ -29,7 +30,7 @@ public partial class WeatherSettingsPage : SettingsPageBase
 
     public WeatherSettingsPageViewModel ViewModel { get; }
 
-    private static WeatherSettingsPageViewModel CreateDefaultViewModel()
+    private static WeatherSettingsPageViewModel CreateDefaultViewModel(bool enableStartupPreviewRefresh = true)
     {
         var settingsFacade = HostSettingsFacadeProvider.GetOrCreate();
         var localizationService = new LocalizationService();
@@ -42,6 +43,14 @@ public partial class WeatherSettingsPage : SettingsPageBase
             settingsFacade,
             localizationService,
             locationService,
-            weatherLocationRefreshService);
+            weatherLocationRefreshService,
+            enableStartupPreviewRefresh);
+    }
+
+    private static WeatherSettingsPageViewModel CreateDesignTimeViewModel()
+    {
+        var viewModel = CreateDefaultViewModel(enableStartupPreviewRefresh: false);
+        viewModel.ApplyDesignTimePreview();
+        return viewModel;
     }
 }

PRODUCT_BRIEF.md

@@ -8,12 +8,12 @@
 
 ## 2. 使用场景
 
-| 场景 | 说明 |
+| 场景   | 说明                     |
-|-----|------|
+| ---- | ---------------------- |
-| 学习辅助 | 查看课程表、记录自习时长、获取每日诗词单词 |
+| 学习辅助 | 查看课程表、记录自习时长、获取每日诗词单词  |
 | 办公效率 | 查看日历日程、快速访问最近文档、获取新闻资讯 |
-| 信息聚合 | 桌面一站式查看天气、日历、热搜、新闻 |
+| 信息聚合 | 桌面一站式查看天气、日历、热搜、新闻     |
-| 个性美化 | 自由定制桌面组件布局、主题、壁纸 |
+| 个性美化 | 自由定制桌面组件布局、主题、壁纸       |
 
 ## 3. 解决方案
 
@@ -27,20 +27,17 @@
 
 ## 4. 解决的问题
 
-| 痛点 | 解决方案 |
+| 痛点             | 解决方案                 |
-|-----|---------|
+| -------------- | -------------------- |
-| 信息分散，需打开多个应用 | 桌面聚合展示天气、日历、新闻等信息 |
+| 信息分散，需打开多个应用   | 桌面聚合展示天气、日历、新闻等信息    |
-| 桌面单调，缺乏个性化 | 丰富的组件和主题自由定制 |
+| 桌面单调，缺乏个性化     | 丰富的组件和主题自由定制         |
-| 学习管理不便 | 课程表、自习监测专为学生设计 |
+| 学习管理不便         | 课程表、自习监测专为学生设计       |
 | 功能单一，需安装多个独立应用 | 一个应用整合考试看板、噪音监测等多种功能 |
-| 功能无法满足个性需求 | 插件系统支持无限扩展 |
+| 功能无法满足个性需求     | 插件系统支持无限扩展           |
 
 ## 5. 产品进度
 
 - **当前版本**：v0.7.0（插件 API 3.0.0）
-- **开发状态**：核心功能开发中，预计 v1.0 正式发布
+- **开发状态**：功能开发中，预计 1\~2 个月内发布 v1.0 正式版
 - **用户统计**：通过 PostHog 收集匿名数据（具体数据需后台查看）
 
----
-
-**一句话总结**：阑山桌面是一款面向个人用户的可定制桌面工具，专注个人学习办公场景，通过组件化设计和插件生态提供轻量、开放、跨平台的桌面信息聚合方案。