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fix(frontend,macos): reduce dark mode white flash on window open

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Detect dark/light mode before React hydrates to eliminate the visible
white-to-dark flash when opening windows in dark mode.

Frontend:
- Inline script now reads next-themes localStorage key and applies
  .dark class, colorScheme, and backgroundColor on <html> before first
  paint
- Add CSS-only fallback via prefers-color-scheme media query in an
  inline <style> tag that fires before any JS executes

macOS backend:
- Detect system dark mode via `defaults read -g AppleInterfaceStyle`
  (cached with OnceLock) and set native window background color to
  match dark theme in apply_platform_window_style
- Persist user appearance mode preference (dark/light/system) to DB
  alongside zoom level so new windows use the correct background
- Add update_appearance_mode Tauri command; frontend syncs on mount,
  on settings change, and on cross-window storage events

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
xintaofei
2026-04-13 11:15:13 +08:00
parent e05ae76453
commit 41b28001af
7 changed files with 145 additions and 9 deletions
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4
src/lib/tauri.ts
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@@ -454,6 +454,10 @@ export async function updateTrafficLightPosition(zoom: number): Promise<void> {
return invoke("update_traffic_light_position", { zoom: zoom as number })
}
export async function updateAppearanceMode(mode: string): Promise<void> {
return invoke("update_appearance_mode", { mode })
}
// Folder history commands
export async function loadFolderHistory(): Promise<FolderHistoryEntry[]> {