fix(ui,server): Fix project icon updates and image upload issues

- Fix setProjectCustomIcon using wrong property name (customIcon -> customIconPath)
- Add currentProject state update to setProjectIcon and setProjectCustomIcon
- Fix data URL regex to handle all formats (e.g., charset=utf-8 in GIFs)
- Increase project icon size limit from 2MB to 5MB for animated GIFs
- Add toast notifications for upload validation errors
- Add image error fallback to folder icon in project switcher
- Make HttpApiClient get/put methods public for store access
- Fix TypeScript errors in app-store.ts (trashedAt type, font properties)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/server/src/routes/fs/routes/save-board-background.ts

@@ -31,7 +31,9 @@ export function createSaveBoardBackgroundHandler() {
       await secureFs.mkdir(boardDir, { recursive: true });
 
       // Decode base64 data (remove data URL prefix if present)
-      const base64Data = data.replace(/^data:image\/\w+;base64,/, '');
+      // Use a regex that handles all data URL formats including those with extra params
+      // e.g., data:image/gif;charset=utf-8;base64,R0lGOD...
+      const base64Data = data.replace(/^data:[^,]+,/, '');
       const buffer = Buffer.from(base64Data, 'base64');
 
       // Use a fixed filename for the board background (overwrite previous)

apps/server/src/routes/fs/routes/save-image.ts

@@ -31,7 +31,9 @@ export function createSaveImageHandler() {
       await secureFs.mkdir(imagesDir, { recursive: true });
 
       // Decode base64 data (remove data URL prefix if present)
-      const base64Data = data.replace(/^data:image\/\w+;base64,/, '');
+      // Use a regex that handles all data URL formats including those with extra params
+      // e.g., data:image/gif;charset=utf-8;base64,R0lGOD...
+      const base64Data = data.replace(/^data:[^,]+,/, '');
       const buffer = Buffer.from(base64Data, 'base64');
 
       // Generate unique filename with timestamp