feat(services): add key resolution for orphaned anime folders

- Add key_resolution_service.py to resolve provider keys for folders without key/data files
- Search anime provider and match folder names (case-insensitive, exact match required)
- Only save to DB if exactly one match found; otherwise skip
- Add comprehensive unit tests (28 tests)
- Integrate into scheduler_service after nfo_repair scan
- Update ARCHITECTURE.md documentation

package.json

@@ -1,6 +1,6 @@
 {
   "name": "aniworld-web",
-  "version": "1.2.2",
+  "version": "1.3.0",
   "description": "Aniworld Anime Download Manager - Web Frontend",
   "type": "module",
   "scripts": {