fix(summary): 空表守卫容错——表未建(漏迁移的升级)也回退旧聚合,不 500

Co-Authored-By: Claude Code <noreply@anthropic.com>

yunke-server/app/storage/summary.py

@@ -33,14 +33,20 @@ _SH = ZoneInfo("Asia/Shanghai")
 
 
 async def has_rows(session: AsyncSession) -> bool:
-    """汇总表是否已有数据(读端点的空表守卫:部署回填前自动回退旧实时聚合)。"""
-    return bool(
-        (
-            await session.execute(
-                sa.select(sa.func.count()).select_from(MsgDailyStats)
-            )
-        ).scalar_one()
-    )
+    """汇总表是否已有数据(读端点的空表守卫:部署回填前自动回退旧实时聚合)。
+
+    表还不存在(漏跑迁移的升级)与空表同视——回退旧路径,不 500。
+    """
+    try:
+        return bool(
+            (
+                await session.execute(
+                    sa.select(sa.func.count()).select_from(MsgDailyStats)
+                )
+            ).scalar_one()
+        )
+    except (sa.exc.OperationalError, sa.exc.ProgrammingError):
+        return False
 
 
 def day_key(ts_ms: int) -> int: