feat: 重构认证流程，升级工具功能并优化后端配置

- 修复token泄露风险：改用X-Local-Creds-Token请求头传递token，从URL Hash读取set_token避免日志记录
- 重构全站认证逻辑：提取公用工具函数统一各服务的认证校验流程
- 升级投资账本工具：支持本地上传CSV和粘贴文本，移除硬编码路径，适配新参数格式
- 新增403/404/500标准错误响应文件，统一API错误返回格式
- 优化后端配置：关闭ETag，重构CORS中间件，新增全局错误捕获，限制敏感文件访问
- 优化web zen box的Service Worker，支持音频分片请求与断点续传
- 清理冗余前端代码，调整页面格式与权限控制

public/tools/private_clipboard/clipboard.js

@@ -980,12 +980,17 @@ const createFolder = async () => {
 }
 
 const init = async () => {
-  // ===== set_token 处理：必须在 clearUrlQuery 之前 =====
+  // ===== set_token 仅允许从 hash 读取，避免进入服务端日志 =====
   try {
-    const params = new URLSearchParams(window.location.search)
-    const setToken = params.get('set_token')
+    const currentUrl = new URL(window.location.href)
+    const hashRaw = String(currentUrl.hash || '').replace(/^#/, '')
+    const hashParams = new URLSearchParams(hashRaw.startsWith('?') ? hashRaw.slice(1) : hashRaw)
+    const setToken = hashParams.get('set_token')
     if (setToken) {
       localStorage.setItem('toolbox_creds_token', setToken)
+      hashParams.delete('set_token')
+      currentUrl.hash = hashParams.toString() ? `#${hashParams.toString()}` : ''
+      window.history.replaceState(null, '', currentUrl.toString())
     }
   } catch {}
 
@@ -1038,7 +1043,8 @@ const init = async () => {
     try {
       const token = localStorage.getItem('toolbox_creds_token') || ''
       if (!token) return
-      const res = await fetch(apiBase + '/auth/local_creds?token=' + encodeURIComponent(token), {
+      const res = await fetch(apiBase + '/auth/local_creds', {
+        headers: { 'X-Local-Creds-Token': token },
         credentials: 'same-origin',
         cache: 'no-store'
       })