fix: add missing commas for syntax correctness across multiple files

app/repositories/task_repo.py

@@ -107,7 +107,7 @@ class TaskRepository:
         return task
 
     def _apply_filters(
-        self, stmt: Select[tuple[Task]], params: TaskQueryParams
+        self, stmt: Select[tuple[Task]], params: TaskQueryParams,
     ) -> Select[tuple[Task]]:
         if params.deal_id is not None:
             stmt = stmt.where(Task.deal_id == params.deal_id)