feat(config): add live slow-sql threshold setting

db/admin.py

@@ -17,6 +17,7 @@ _DEFAULT_SYSTEM_CONFIG = {
     "max_concurrent_global": 2,
     "max_concurrent_per_account": 1,
     "max_screenshot_concurrent": 3,
+    "db_slow_query_ms": 120,
     "schedule_enabled": 0,
     "schedule_time": "02:00",
     "schedule_browse_type": "应读",
@@ -49,6 +50,7 @@ _SYSTEM_CONFIG_UPDATERS = (
     ("schedule_weekdays", "schedule_weekdays"),
     ("max_concurrent_per_account", "max_concurrent_per_account"),
     ("max_screenshot_concurrent", "max_screenshot_concurrent"),
+    ("db_slow_query_ms", "db_slow_query_ms"),
     ("enable_screenshot", "enable_screenshot"),
     ("proxy_enabled", "proxy_enabled"),
     ("proxy_api_url", "proxy_api_url"),
@@ -265,6 +267,7 @@ def update_system_config(
     kdocs_admin_notify_email=None,
     kdocs_row_start=None,
     kdocs_row_end=None,
+    db_slow_query_ms=None,
 ) -> bool:
     """更新系统配置（仅更新DB，不做缓存处理）。"""
     arg_values = {
@@ -293,6 +296,7 @@ def update_system_config(
         "kdocs_admin_notify_email": kdocs_admin_notify_email,
         "kdocs_row_start": kdocs_row_start,
         "kdocs_row_end": kdocs_row_end,
+        "db_slow_query_ms": db_slow_query_ms,
     }
 
     updates = []