Add Chinese (Simplified) localization

[Kobe9312]

• Translate all UI text to Chinese
• Add Chinese README
• Add Chinese notification categorization docs
• Include menu items, dialogs, and window titles

[Copilot]

Pull request overview

Adds Simplified Chinese text across the WinUI tray app UI and introduces Chinese-language documentation to support Chinese-speaking users of OpenClaw Windows Hub.

Changes:

• Translates WinUI window titles, labels, tooltips, and tray menu strings into Simplified Chinese.
• Adds Simplified Chinese notification categorization documentation (NOTIFICATION_CATEGORIZATION_zh.md).
• Adds a Simplified Chinese README (README_zh.md).

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
src/OpenClaw.Tray.WinUI/Windows/WebChatWindow.xaml	Translates Web Chat window title/tooltips/error UI text.
src/OpenClaw.Tray.WinUI/Windows/StatusDetailWindow.xaml	Translates status detail window UI labels/headers.
src/OpenClaw.Tray.WinUI/Windows/SettingsWindow.xaml	Translates settings UI (connection/startup/notifications/advanced sections).
src/OpenClaw.Tray.WinUI/Windows/NotificationHistoryWindow.xaml	Translates notification history window labels and empty state.
src/OpenClaw.Tray.WinUI/Windows/CanvasWindow.xaml	Translates canvas window title and error UI.
src/OpenClaw.Tray.WinUI/Windows/ActivityStreamWindow.xaml	Translates activity stream title, filter labels, empty state, footer actions.
src/OpenClaw.Tray.WinUI/Dialogs/WelcomeDialog.cs	Translates welcome dialog UI strings (and some developer-facing comments/docs).
src/OpenClaw.Tray.WinUI/App.xaml.cs	Translates tray popup menu item labels/headers/actions.
docs/NOTIFICATION_CATEGORIZATION_zh.md	Adds Chinese documentation for notification categorization behavior and settings.
README_zh.md	Adds Chinese README covering build/run/features and node mode usage.

Comments suppressed due to low confidence (3)

src/OpenClaw.Tray.WinUI/Dialogs/WelcomeDialog.cs:28

• Inline developer comments were translated to Chinese here, but the surrounding codebase keeps implementation comments in English. For consistency and long-term maintainability, consider reverting implementation comments to English (while keeping UI strings localized).

        // 应用 Mica 背景以获得现代 Windows 11 外观
        SystemBackdrop = new MicaBackdrop();

        // 直接在窗口中构建 UI（不需要 ContentDialog）

src/OpenClaw.Tray.WinUI/Windows/StatusDetailWindow.xaml:55

• ProviderSummaryText's fallback text was translated to "无" here, but StatusDetailWindow.xaml.cs still sets it to the hardcoded string "n/a" when usage.ProviderSummary is empty. This will reintroduce English in the translated UI; update the code-behind fallback string (or centralize localization) so the actual displayed value is localized.

                    <TextBlock Grid.Row="2" Grid.Column="0" Text="提供商："/>
                    <TextBlock x:Name="ProviderSummaryText" Grid.Row="2" Grid.Column="1"
                               Text="无" FontWeight="SemiBold" TextWrapping="Wrap"/>

src/OpenClaw.Tray.WinUI/App.xaml.cs:873

• These menu labels localize the surrounding text, but still display raw session values like ThinkingLevel/VerboseLevel and the toggled on/off strings (and nextVerbose is used both for display and the action payload). This produces mixed-language UI (e.g., "详细模式: off → on"). Keep the action payload values stable (on/off) but map them to localized display strings separately for the menu text.

                var currentThinking = string.IsNullOrWhiteSpace(session.ThinkingLevel) ? "off" : session.ThinkingLevel;
                var currentVerbose = string.IsNullOrWhiteSpace(session.VerboseLevel) ? "off" : session.VerboseLevel;
                var nextVerbose = string.Equals(currentVerbose, "on", StringComparison.OrdinalIgnoreCase) ? "off" : "on";
                menu.AddMenuItem(
                    $"↳ 思考模式: {currentThinking} → 高",
                    "🧠",
                    $"session-thinking|high|{session.Key}",
                    indent: true);
                menu.AddMenuItem(
                    $"↳ 详细模式: {currentVerbose} → {nextVerbose}",
                    "📝",

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[Kobe9312]

Hi! I have addressed all the review comments:

• Reverted implementation comments back to English (keeping only UI strings localized)
• Fixed ProviderSummaryText fallback from n/a to 无 in the code-behind
• Localized on/off display strings to 开/关 in menu items while keeping action payload values stable

Please take another look, thanks!

[shanselman]

@Kobe9312 — Thank you for this contribution and for taking the time to translate everything into Chinese! We genuinely appreciate the effort, and your translation work is not wasted — we want to use it.

However, after reviewing this PR carefully, we've decided we need to set up proper localization infrastructure before we can accept language-specific changes. The current approach of replacing English strings directly in source code has some fundamental issues:

1. It makes the app Chinese-only rather than supporting both languages (or any language)
2. Settings persistence breaks — ComboBox values like "Default"/"None"/"Subtle" are persisted to settings.json by their display text. Translating them changes what's written to disk, breaking interop with the WinForms tray
3. Mixed language UI — enum values like ConnectionStatus.Connected still render in English via .ToString(), so you'd see "状态: Connected"
4. No way for users to choose — the language is baked into the source, not selectable

What we're going to do instead

We're going to implement proper WinUI localization using .resw resource files (Option A / Microsoft's recommended approach):

• Strings/en-us/Resources.resw — English (default)
• Strings/zh-cn/Resources.resw — your Chinese translations go here
• x:Uid attributes on XAML elements for automatic lookup
• ResourceLoader for C# runtime strings
• Windows automatically selects the right language based on OS locale

This means any language in the world can be added just by contributing a new .resw file — no code changes needed.

How you can help

Once we have the infrastructure PR merged (we'll file a tracking issue), we'd love your help creating the Strings/zh-cn/Resources.resw file with the translations you've already done. It'll be a much cleaner contribution — just a resource file, no source code changes.

We're going to close this PR for now, but please don't feel discouraged. We'll tag you on the localization infrastructure issue so you can jump in with the Chinese resource file as soon as it's ready.

Thank you again! 🙏