feat(mysql): 接入只读电池数据源

src/server/plugins/shutdown.ts

@@ -1,4 +1,4 @@
-import { db } from '@/server/db'
+import { closeBatteryPool } from '@/server/battery/mysql'
 import { getLogger } from '@/server/logger'
 
 export default () => {
@@ -17,8 +17,8 @@ export default () => {
 
     await Bun.sleep(500)
     try {
-      await db.$client.end()
-      logger.info('DB pool closed, exiting')
+      await closeBatteryPool()
+      logger.info('Battery MySQL pool closed, exiting')
     } catch (error) {
       logger.error('DB pool close failed during shutdown', { error })
     }