refactor: consolidate linting tools into Ruff

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/api/files.py

@@ -374,7 +374,7 @@ def reprocess_single_file(request: Request, file_id: int, db: DbSession):
         )
 
         logger.info(
-            f"Reprocessing file: ID={file_record.id}, " f"Filename={file_record.original_filename}, TaskID={task.id}"
+            f"Reprocessing file: ID={file_record.id}, Filename={file_record.original_filename}, TaskID={task.id}"
         )
 
         return {
@@ -645,7 +645,7 @@ def retry_subtask(
         upload_task = task_map[subtask_name]
         task = upload_task.delay(file_path, file_id)
 
-        logger.info(f"Retrying upload subtask: FileID={file_record.id}, " f"Subtask={subtask_name}, TaskID={task.id}")
+        logger.info(f"Retrying upload subtask: FileID={file_record.id}, Subtask={subtask_name}, TaskID={task.id}")
 
         return {
             "status": "success",

app/api/url_upload.py

@@ -146,7 +146,7 @@ def validate_file_type(content_type: str, filename: str) -> bool:
     # Check content type from header
     if content_type:
         # Handle content-type with charset (e.g., "application/pdf; charset=utf-8")
-        base_content_type = content_type.split(";")[0].strip().lower()
+        base_content_type = content_type.split(";", maxsplit=1)[0].strip().lower()
         if base_content_type in ALLOWED_MIME_TYPES or base_content_type in IMAGE_MIME_TYPES:
             return True