Fix preview mode stale content bug when switching notes (v0.1.1)

- Fixed race condition where image processing ran before localContent updated
- Added synchronization guard to prevent processing stale content
- Added comprehensive logging for debugging note switches
- Bumped version to 0.1.1

package.json

@@ -1,7 +1,7 @@
 {
   "name": "nextcloud-notes-tauri",
   "private": true,
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "module",
   "scripts": {
     "dev": "vite",