feat: add configuration management with async settings refresh and middleware integration

core/config.py

@@ -0,0 +1,21 @@
+from apps.base.models import KeyValue
+from apps.base.utils import ip_limit
+from core.settings import DEFAULT_CONFIG, settings
+
+
+async def ensure_settings_row() -> None:
+    await KeyValue.get_or_create(key="settings", defaults={"value": DEFAULT_CONFIG})
+
+
+def _sync_ip_limits() -> None:
+    ip_limit["error"].minutes = settings.errorMinute
+    ip_limit["error"].count = settings.errorCount
+    ip_limit["upload"].minutes = settings.uploadMinute
+    ip_limit["upload"].count = settings.uploadCount
+
+
+async def refresh_settings() -> None:
+    """从数据库读取最新配置并应用到运行时。"""
+    config_record = await KeyValue.filter(key="settings").first()
+    settings.user_config = config_record.value if config_record and config_record.value else {}
+    _sync_ip_limits()