feat: integrate NFO repair into scheduled folder scan

- Add FolderScanService.run_folder_scan() calling perform_nfo_repair_scan()
- Remove startup-time NFO repair from fastapi_app lifespan
- Update docs/NFO_GUIDE.md: repair now runs as part of daily scan
- Update tests to verify integration wiring
- Update ARCHITECTURE.md and scheduler_service for scan scheduling

tests/integration/test_nfo_repair_startup.py

@@ -1,46 +1,45 @@
-"""Integration tests verifying perform_nfo_repair_scan is wired into app startup.
+"""Integration tests verifying perform_nfo_repair_scan is wired into folder scan.
 
 These tests confirm that:
-1. The lifespan calls perform_nfo_repair_scan after perform_media_scan_if_needed.
-2. Series with incomplete NFO files are queued via the background_loader.
+1. FolderScanService.run_folder_scan calls perform_nfo_repair_scan.
+2. Series with incomplete NFO files are queued via asyncio.create_task.
 """
 from unittest.mock import AsyncMock, MagicMock, call, patch
 
 import pytest
 
 
-class TestNfoRepairScanCalledOnStartup:
-    """Verify perform_nfo_repair_scan is invoked during the FastAPI lifespan."""
+class TestNfoRepairScanCalledInFolderScan:
+    """Verify perform_nfo_repair_scan is invoked from FolderScanService."""
 
-    def test_perform_nfo_repair_scan_imported_in_lifespan(self):
-        """fastapi_app.py lifespan imports perform_nfo_repair_scan."""
+    def test_perform_nfo_repair_scan_imported_in_folder_scan_service(self):
+        """folder_scan_service.py imports perform_nfo_repair_scan."""
         import importlib
 
-        import src.server.fastapi_app as app_module
-
-        source = importlib.util.find_spec("src.server.fastapi_app").origin
+        source = importlib.util.find_spec("src.server.services.folder_scan_service").origin
         with open(source, "r", encoding="utf-8") as fh:
             content = fh.read()
 
         assert "perform_nfo_repair_scan" in content, (
-            "perform_nfo_repair_scan must be imported and called in fastapi_app.py"
+            "perform_nfo_repair_scan must be imported in folder_scan_service.py"
         )
 
-    def test_perform_nfo_repair_scan_called_after_media_scan(self):
-        """perform_nfo_repair_scan must appear after perform_media_scan_if_needed."""
+    def test_perform_nfo_repair_scan_called_in_run_folder_scan(self):
+        """perform_nfo_repair_scan must be called inside run_folder_scan."""
         import importlib
 
-        source = importlib.util.find_spec("src.server.fastapi_app").origin
+        source = importlib.util.find_spec("src.server.services.folder_scan_service").origin
         with open(source, "r", encoding="utf-8") as fh:
             content = fh.read()
 
-        media_scan_pos = content.find("perform_media_scan_if_needed(background_loader)")
-        repair_scan_pos = content.find("perform_nfo_repair_scan(background_loader)")
+        run_folder_scan_pos = content.find("def run_folder_scan")
+        # Find the call inside the method body (after the import line)
+        repair_scan_call_pos = content.find("await perform_nfo_repair_scan(background_loader=None)")
 
-        assert media_scan_pos != -1, "perform_media_scan_if_needed call not found"
-        assert repair_scan_pos != -1, "perform_nfo_repair_scan call not found"
-        assert repair_scan_pos > media_scan_pos, (
-            "perform_nfo_repair_scan must be called AFTER perform_media_scan_if_needed"
+        assert run_folder_scan_pos != -1, "run_folder_scan method not found"
+        assert repair_scan_call_pos != -1, "perform_nfo_repair_scan call not found"
+        assert repair_scan_call_pos > run_folder_scan_pos, (
+            "perform_nfo_repair_scan must be called INSIDE run_folder_scan"
         )