Add: setting window for tauri - bugs not fixed yet

docs/TAURI_FRONTEND_DESIGN.md

@@ -47,14 +47,27 @@ Frontend:
 - Tauri backend exposes:
   - `current_state` command (structured snapshot DTO)
   - `load_active_sprite_pack` command (manifest + atlas as base64 data URL)
+  - settings commands:
+    - `settings_snapshot`
+    - `list_sprite_packs`
+    - `set_sprite_pack`
+    - `set_scale`
+    - `set_visibility`
+    - `set_always_on_top`
   - `debug_overlay_visible` / `set_debug_overlay_visible` commands for persisted debug panel control
   - `runtime:snapshot` event after command application.
 - React/Vite frontend now renders sprite atlas frames with PixiJS and updates animation/scale
   from runtime snapshot events.
+- For `sprite.png` packs in tauri runtime, frame size is now derived from atlas dimensions with a
+  fixed `8x7` grid topology to keep splitting stable across packaged asset resolutions.
+- React/Vite frontend now supports two window modes:
+  - `main`: transparent overlay sprite renderer
+  - `settings`: pop-out settings window for character and window controls
 - Tauri window drag is implemented for undecorated mode:
   - left-mouse drag starts native window dragging
   - moved position is synced into runtime-core snapshot/config state.
 - Windows-first tray/menu MVP is implemented:
+  - `Settings` (opens/focuses pop-out settings window)
   - `Show/Hide`
   - `Always on top` toggle
   - `Debug overlay` toggle
@@ -66,3 +79,4 @@ Frontend:
 
 1. Extend tray/menu implementation beyond Windows-first MVP and close platform parity gaps.
 2. Add frontend parity acceptance tests (Bevy vs Tauri state transitions).
+3. Add sprite-pack previews/thumbnails in the settings window character selector.