fix: ruff lint + format fixes in tests, ESLint fixes in frontend

backend/app/services/ocr_service.py

@@ -46,12 +46,12 @@ async def upload_file(
     Validates MIME type and file size before saving.
     """
     if not validate_mime_type(mime_type):
-        raise ValueError(f"Invalid MIME type: {mime_type}. Allowed: {ALLOWED_MIME_TYPES}")
+        raise ValueError(
+            f"Invalid MIME type: {mime_type}. Allowed: {ALLOWED_MIME_TYPES}"
+        )
 
     if not validate_file_size(len(file_bytes)):
-        raise ValueError(
-            f"File size exceeds limit of {settings.MAX_FILE_SIZE_MB} MB"
-        )
+        raise ValueError(f"File size exceeds limit of {settings.MAX_FILE_SIZE_MB} MB")
 
     # Ensure upload directory exists
     upload_dir = settings.UPLOAD_DIR
@@ -173,6 +173,7 @@ async def apply_to_vehicle(
             if ocr_field == "first_registration" and isinstance(value, str):
                 try:
                     from datetime import datetime as dt
+
                     parsed = dt.strptime(value, "%d.%m.%Y").date()
                     setattr(vehicle, vehicle_field, parsed)
                     updated_fields.append(vehicle_field)
@@ -180,6 +181,7 @@ async def apply_to_vehicle(
                 except ValueError:
                     try:
                         from datetime import date
+
                         parsed = date.fromisoformat(value)
                         setattr(vehicle, vehicle_field, parsed)
                         updated_fields.append(vehicle_field)