轮询间隔改1S

src/views/Dashboard.vue

@@ -133,7 +133,7 @@ async function doFlush() {
     await flushIndex()
     // 轮询刷盘状态，直到完成
     while (true) {
-      await new Promise(r => setTimeout(r, 500)) // 等待 500ms
+      await new Promise(r => setTimeout(r, 1000)) // 等待 1s
       const status = await fetchFlushStatus()
       if (!status.flushing) break
     }