fix(web,plugin): 前端审计修复 — 401 消除 + 统计卡片 crash + 销售漏斗 500 + antd 6 废弃 API

- API client: proactive token refresh（请求前 30s 检查过期，提前刷新避免 401）
- Plugin store: fetchPlugins promise 去重，防止 StrictMode 并发重复请求
- Home stats: 简化 useEffect 加载逻辑，修复 tagColor undefined crash
- PluginGraphPage: valueStyle → styles.content, Spin tip → description（antd 6）
- DashboardWidgets: trailColor → railColor（antd 6）
- data_service: build_scope_sql 参数索引修复（硬编码 $100 → 动态 values.len()+1）
- erp-core error: Internal 错误添加 tracing::error 日志输出

apps/web/src/pages/Users.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState, useCallback } from 'react';
+import { useEffect, useState, useCallback, useRef } from 'react';
 import {
   Table,
   Button,
@@ -80,6 +80,15 @@ export default function Users() {
     setLoading(false);
   }, [page, searchText]);
 
+  // 搜索防抖：输入后 300ms 才触发查询
+  const debounceTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const debouncedSearch = useCallback((_text: string) => {
+    if (debounceTimer.current) clearTimeout(debounceTimer.current);
+    debounceTimer.current = setTimeout(() => {
+      setPage(1);
+    }, 300);
+  }, []);
+
   const fetchRoles = useCallback(async () => {
     try {
       const result = await listRoles();
@@ -349,7 +358,10 @@ export default function Users() {
             placeholder="搜索用户名..."
             prefix={<SearchOutlined style={{ color: '#94A3B8' }} />}
             value={searchText}
-            onChange={(e) => setSearchText(e.target.value)}
+            onChange={(e) => {
+              setSearchText(e.target.value);
+              debouncedSearch(e.target.value);
+            }}
             allowClear
             style={{ width: 220, borderRadius: 8 }}
           />