修复 SystemConfig潜在的资源竞争问题

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

database/versions/41ef1dd7467c_2_2_2.py

@@ -0,0 +1,41 @@
+"""2.2.2
+
+Revision ID: 41ef1dd7467c
+Revises: a946dae52526
+Create Date: 2026-01-13 13:02:41.614029
+
+"""
+
+from app.db import ScopedSession
+from app.db.models.systemconfig import SystemConfig
+from app.log import logger
+
+# revision identifiers, used by Alembic.
+revision = "41ef1dd7467c"
+down_revision = "a946dae52526"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # systemconfig表 去重
+    with ScopedSession() as db:
+        try:
+            seen_keys = set()
+            # 按ID降序查询，以便保留最新的配置
+            for item in db.query(SystemConfig).order_by(SystemConfig.id.desc()).all():
+                if item.key in seen_keys:
+                    logger.warn(
+                        f"已删除重复的SystemConfig项：{item.key} 值:{item.value}"
+                    )
+                    db.delete(item)
+                else:
+                    seen_keys.add(item.key)
+            db.commit()
+        except Exception as e:
+            logger.error(e)
+            db.rollback()
+
+
+def downgrade() -> None:
+    pass