fix: MariaDB JSON path compat for name_member + FAM-Core API verified

- name_member(): replace MySQL-only JSON_REPLACE/JSON_CONTAINS with wildcard
  JSON paths (unsupported in MariaDB 10.11) with Python-side JSON parsing
- FAM-Core venv rebuilt with Python 3.10.20 on NAS
- All API endpoints tested: health, status, member list, unnamed, naming
- POST /api/member/name: 人物A successfully named to 张三
- PROGRESS.md updated with full test results and task completion

fam-core/src/fam_core/db_layer.py

@@ -384,15 +384,33 @@ def name_member(abstract_label: str, real_name: str, named_by: str) -> Dict:
         updated_details_count = cursor.rowcount
 
         # 4. 批量回溯更新 monitor_events.entities_json
+        #    MariaDB 10.11 不支持 MySQL 的 $[*] 通配符 JSON 路径，
+        #    改用 Python 层解析 + 逐行更新
         cursor.execute(
-            """UPDATE monitor_events
-               SET entities_json = JSON_REPLACE(
-                     entities_json, '$[*].person', %s
-                   )
-               WHERE JSON_CONTAINS(entities_json->'$[*].person', JSON_QUOTE(%s))""",
-            (real_name, abstract_label)
+            "SELECT event_id, entities_json FROM monitor_events WHERE entities_json LIKE %s",
+            (f'%{abstract_label}%',)
         )
-        updated_events_count = cursor.rowcount
+        import json as _json
+        updated_events_count = 0
+        for eid, entities_raw in cursor.fetchall():
+            if not entities_raw:
+                continue
+            try:
+                entities = _json.loads(entities_raw) if isinstance(entities_raw, str) else entities_raw
+            except (ValueError, TypeError):
+                continue
+            changed = False
+            if isinstance(entities, list):
+                for ent in entities:
+                    if isinstance(ent, dict) and ent.get('person') == abstract_label:
+                        ent['person'] = real_name
+                        changed = True
+            if changed:
+                cursor.execute(
+                    "UPDATE monitor_events SET entities_json = %s WHERE event_id = %s",
+                    (_json.dumps(entities, ensure_ascii=False), eid)
+                )
+                updated_events_count += 1
 
         conn.commit()
         return {