Fix JSON parsing in NFO JavaScript modules

- Add response.json() calls in nfo-manager.js for all API calls
- Add response.json() calls in nfo-config.js for all API calls
- Fix createNFO, refreshNFO, viewNFO, getSeriesWithoutNFO functions
- Fix load and testTMDBConnection functions
- All API responses must be parsed before accessing properties

tests/unit/test_nfo_dependency.py

@@ -3,13 +3,14 @@
 Tests that get_nfo_service() correctly loads TMDB API key from config.json
 when it's not in settings (e.g., after server reload in development).
 """
-import pytest
 from unittest.mock import MagicMock, patch
+
+import pytest
 from fastapi import HTTPException
 
-from src.server.api.nfo import get_nfo_service
-from src.server.models.config import NFOConfig, AppConfig
 from src.config.settings import settings
+from src.server.api.nfo import get_nfo_service
+from src.server.models.config import AppConfig, NFOConfig
 
 
 @pytest.mark.asyncio