feat: Auto-save components, soft delete, tags, compact WCO header

- Auto-save rendered Vue components to DB on render_vue_component
- Soft delete (archive) instead of hard delete for components
- Tags support for component categorization
- Gallery limited to 10 most recent items per section
- Upsert with ON CONFLICT for component saves
- PUT endpoint for partial component updates
- Collapsible toolbar with animated toggle button
- Window Controls Overlay support for PWA titlebar
- Compact header mode (32px) with hidden dot toggle
- Dynamic theme-color meta sync for Windows titlebar

server/db/migrations.ts

@@ -120,7 +120,9 @@ function runColumnMigrations(db: Database) {
     'ALTER TABLE project_canvas ADD COLUMN show_in_toolbar INTEGER DEFAULT 0',
     'ALTER TABLE project_canvas ADD COLUMN toolbar_icon TEXT',
     'ALTER TABLE project_canvas ADD COLUMN toolbar_order INTEGER DEFAULT 99',
-    'ALTER TABLE project_canvas ADD COLUMN status TEXT DEFAULT \'active\''
+    'ALTER TABLE project_canvas ADD COLUMN status TEXT DEFAULT \'active\'',
+    'ALTER TABLE vue_components ADD COLUMN tags TEXT',
+    'ALTER TABLE vue_components ADD COLUMN status TEXT DEFAULT \'active\''
   ]
 
   for (const sql of alterStatements) {