fix(锁与查询组): #12 熔断器状态转换加锁；#10 问答人名匹配改 JSON_CONTAINS 精确匹配(防 LIKE 子串/特殊字符误匹配)；#4 OracleDB 复合写加锁；#6 每消费者独立 VideoProcessor(消除 adapter.timeout 共享竞争)；#15 done 视频文件被覆盖(mtime>processed_at)自动重置重分析

fam-core/src/fam_core/db_layer.py

@@ -212,9 +212,11 @@ def query_sync_events_for_person_date(person: str, date_str: str) -> List[Dict]:
                       v.camera_name, v.filename, v.event_start_time, v.processed_at
                FROM sync_events e
                JOIN sync_videos v ON e.video_id = v.id
-               WHERE v.processed_at LIKE %s AND e.person_list_json LIKE %s
+               WHERE v.processed_at LIKE %s
+                 AND e.person_list_json IS NOT NULL
+                 AND JSON_CONTAINS(e.person_list_json, JSON_QUOTE(%s), '$')
                ORDER BY v.processed_at ASC, e.ts ASC""",
-            (f'{date_str}%', f'%{person}%'))
+            (f'{date_str}%', person))
         return cur.fetchall()
     finally:
         conn.close()