phase 17: fix ruff lint error in scheduler import order

services/scheduler/app.py

@@ -12,21 +12,6 @@ import logging
 from datetime import datetime
 from typing import Any, Optional
 
-
-def _ensure_dict(val: Any) -> Optional[dict]:
-    """Coerce a JSONB value (dict or JSON string) to a Python dict."""
-    if val is None:
-        return None
-    if isinstance(val, dict):
-        return val
-    if isinstance(val, str):
-        try:
-            parsed = json.loads(val)
-            return parsed if isinstance(parsed, dict) else None
-        except (json.JSONDecodeError, TypeError):
-            return None
-    return None
-
 import asyncpg
 import redis.asyncio as aioredis
 
@@ -42,6 +27,21 @@ from services.shared.redis_keys import (
 
 logger = logging.getLogger("scheduler")
 
+
+def _ensure_dict(val: Any) -> Optional[dict]:
+    """Coerce a JSONB value (dict or JSON string) to a Python dict."""
+    if val is None:
+        return None
+    if isinstance(val, dict):
+        return val
+    if isinstance(val, str):
+        try:
+            parsed = json.loads(val)
+            return parsed if isinstance(parsed, dict) else None
+        except (json.JSONDecodeError, TypeError):
+            return None
+    return None
+
 # Default polling cadences by source class (seconds).
 # Individual sources can override via config.polling_interval_seconds.
 DEFAULT_CADENCES: dict[str, int] = {