fix: load configuration from config.json and fix authentication

- Load anime_directory and master_password_hash from config.json on startup
- Sync configuration from config.json to settings object in fastapi_app.py
- Update dependencies.py to load config from JSON if not in environment
- Fix app.js to use makeAuthenticatedRequest() for all authenticated API calls
- Fix API endpoint paths from /api/v1/anime to /api/anime
- Update auth_service.py to load master_password_hash from config.json
- Update auth.py setup endpoint to save master_password_hash to config
- Fix rate limiting code to satisfy type checker
- Update config.json with test master password hash

Fixes:
- 401 Unauthorized errors on /api/anime endpoint
- 503 Service Unavailable errors on /api/anime/process/locks
- Configuration not being loaded from config.json file
- Authentication flow now works end-to-end with JWT tokens

src/server/fastapi_app.py

@@ -53,10 +53,30 @@ async def lifespan(app: FastAPI):
     """Manage application lifespan (startup and shutdown)."""
     # Startup
     try:
+        # Load configuration from config.json and sync with settings
+        try:
+            from src.server.services.config_service import get_config_service
+            config_service = get_config_service()
+            config = config_service.load_config()
+            
+            # Sync anime_directory from config.json to settings
+            if config.other and config.other.get("anime_directory"):
+                settings.anime_directory = str(config.other["anime_directory"])
+                print(
+                    f"Loaded anime_directory from config: "
+                    f"{settings.anime_directory}"
+                )
+        except Exception as e:
+            print(f"Warning: Failed to load config from config.json: {e}")
+        
         # Initialize SeriesApp with configured directory and store it on
         # application state so it can be injected via dependencies.
         if settings.anime_directory:
             app.state.series_app = SeriesApp(settings.anime_directory)
+            print(
+                f"SeriesApp initialized with directory: "
+                f"{settings.anime_directory}"
+            )
         else:
             # Log warning when anime directory is not configured
             print(