更新数据库迁移逻辑

backend/database.py

@@ -36,6 +36,17 @@ async def init_db():
 
         await conn.run_sync(Base.metadata.create_all)
 
+        # 给 acme_configs 表补全新列（旧表迁移后可能缺少这些列）
+        for col_def in [
+            "ALTER TABLE acme_configs ADD COLUMN name VARCHAR(100) NOT NULL DEFAULT '默认配置'",
+            "ALTER TABLE acme_configs ADD COLUMN created_at DATETIME",
+            "ALTER TABLE acme_configs ADD COLUMN updated_at DATETIME",
+        ]:
+            try:
+                await conn.execute(__import__("sqlalchemy").text(col_def))
+            except Exception:
+                pass  # 列已存在
+
         # 迁移：给 domains 表加 acme_config_id 列
         try:
             await conn.execute(