feat(audit): F1+F2 告警静默规则标记完成 + 审计日志CSV导出实现

F1 告警静默规则 [done]:
- 后端 alert_silence.go: CRUD + Toggle (onetime/daily/weekly 三模式)
- 告警引擎 isSilenced 集成 (alert_engine.go)
- 前端 SilenceRuleTab + SilenceDialog
- 路由 /alerts/silences 已注册

F2 审计日志导出 [done]:
- 重写 ExportAuditLogs: 真正的 CSV 导出 (encoding/csv + UTF-8 BOM)
- 支持 module/action/username/startTime/endTime 筛选
- 导出限制 10000 条防溢出，自动记录审计日志
- JSON 格式向后兼容 (format=json)
- 前端 exportLogs 传递查询参数

同时包含累积的前期工作:
- 目录重构 internal/ -> controller/model/router (v0.55-v0.57)
- 后端分层架构 dto/repository/service/utils
- 审计模块全功能 (终端审计/操作审计/登录日志)
- asciicast v2 录制格式
- SFTP 文件浏览器
- StatStrip 紧凑统计条
- 在线会话自动刷新
- LiveMonitor WebSocket 诊断修复

验证: go build ✅ | npm run build ✅ | Docker 部署 ✅ | 10 回归端点 ✅ | CSV 导出 ✅ | 静默 CRUD ✅

frontend/src/services/http.ts

@@ -15,12 +15,8 @@ export interface ListResponse<T = unknown> {
   total: number;
 }
 
-// 可序列化为 JSON 的请求体类型
-// 注: 使用 unknown 接受任意 body（前端 API 层会 JSON.stringify）
 type Json = unknown;
 
-// 通用请求函数
-// 注: 默认返回类型为 any 以兼容动态后端响应；调用方应通过泛型参数指定具体类型
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 async function request<T = any>(
   method: string,
@@ -28,7 +24,6 @@ async function request<T = any>(
   body?: Json,
   params?: Record<string, string | number | boolean | undefined>
 ): Promise<T> {
-  // 构建 URL（含 query params）
   let fullUrl = `${BASE_URL}${url}`;
   if (params) {
     const searchParams = new URLSearchParams();
@@ -38,17 +33,16 @@ async function request<T = any>(
       }
     });
     const qs = searchParams.toString();
-    if (qs) fullUrl += `?${qs}`;
+    if (qs) fullUrl += '?' + qs;
   }
 
-  // 获取 token
   const token = useUserStore.getState().token || localStorage.getItem('token');
 
   const headers: Record<string, string> = {
     'Content-Type': 'application/json',
   };
   if (token) {
-    headers['Authorization'] = `Bearer ${token}`;
+    headers['Authorization'] = 'Bearer ' + token;
   }
 
   const response = await fetch(fullUrl, {
@@ -69,12 +63,9 @@ async function request<T = any>(
     throw new Error(json.message || '请求失败');
   }
 
-  // Return json.data for standard responses, or full json for non-standard ones
   return (json.data !== undefined ? json.data : json) as T;
 }
 
-// 导出便捷方法
-// 注: 默认泛型为 any 以兼容动态后端响应
 export const http = {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   get: <T = any>(url: string, params?: Record<string, string | number | boolean | undefined>) =>
@@ -92,40 +83,54 @@ export const http = {
   getRaw: async (url: string): Promise<string> => {
     const tk = useUserStore.getState().token;
     const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
-    const resp = await fetch(`${baseUrl}/api/v1${url}`, { headers: { Authorization: `Bearer ${tk}` } });
-    if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
+    const resp = await fetch(baseUrl + '/api/v1' + url, { headers: { Authorization: 'Bearer ' + tk } });
+    if (!resp.ok) throw new Error('HTTP ' + resp.status);
     return resp.text();
   },
 
   putRaw: async (url: string, body: string, contentType: string): Promise<unknown> => {
     const tk = useUserStore.getState().token;
     const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
-    const resp = await fetch(`${baseUrl}/api/v1${url}`, {
+    const resp = await fetch(baseUrl + '/api/v1' + url, {
       method: 'PUT',
-      headers: { Authorization: `Bearer ${tk}`, 'Content-Type': contentType },
+      headers: { Authorization: 'Bearer ' + tk, 'Content-Type': contentType },
       body,
     });
-    if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
+    if (!resp.ok) throw new Error('HTTP ' + resp.status);
     return resp.json();
   },
 
-  // 二进制下载（blob）— 用于 tar.gz / 文件下载
   download: async (url: string, filename?: string): Promise<void> => {
     const tk = useUserStore.getState().token;
     const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
-    const resp = await fetch(`${baseUrl}/api/v1${url}`, {
-      headers: { Authorization: `Bearer ${tk}` },
+    const resp = await fetch(baseUrl + '/api/v1' + url, {
+      headers: { Authorization: 'Bearer ' + tk },
     });
-    if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
+    if (!resp.ok) throw new Error('HTTP ' + resp.status);
     const blob = await resp.blob();
     const a = document.createElement('a');
     a.href = URL.createObjectURL(blob);
-    a.download = filename || resp.headers.get('Content-Disposition')?.match(/filename="?(.+?)"?$/)?.[1] || 'download';
+    const disp = resp.headers.get('Content-Disposition') || '';
+    const m = disp.match(/filename="?(.+?)"?$/);
+    a.download = filename || (m ? m[1] : 'download');
     document.body.appendChild(a);
     a.click();
     document.body.removeChild(a);
     URL.revokeObjectURL(a.href);
   },
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  upload: async <T = any>(url: string, formData: FormData): Promise<T> => {
+    const tk = useUserStore.getState().token;
+    const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
+    const resp = await fetch(baseUrl + '/api/v1' + url, {
+      method: 'POST',
+      headers: { Authorization: 'Bearer ' + tk },
+      body: formData,
+    });
+    if (!resp.ok) throw new Error('HTTP ' + resp.status);
+    return resp.json();
+  },
 };
 
 export default http;