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/components/server/ServerManager.tsx

@@ -40,12 +40,13 @@ import {
   ChevronRight,
 } from 'lucide-react';
 import { serverApi } from '@/services/api';
-import { ServerStatsCards } from './ServerStatsCards';
+import { ServerStatsStrip } from './ServerStatsStrip';
 import { useConfirm } from '@/components/ui/confirm-dialog';
 import { toast } from 'sonner';
 import { useUserStore } from '@/store';
 import { CloudServerImport } from './CloudServerImport';
 import { TerminalDialog } from './TerminalDialog';
+import { ServerFileBrowser } from './ServerFileBrowser';
 import { ExcelServerImport } from './ExcelServerImport';
 import { ServerForm, EMPTY_FORM, type ServerFormData } from './ServerForm';
 import { getTags } from './serverHelpers';
@@ -72,6 +73,10 @@ export function ServerManager() {
   const [terminalOpen, setTerminalOpen] = useState(false);
   const [terminalServer, setTerminalServer] = useState<{ id: number; name: string; ip: string; hasAuth?: boolean } | null>(null);
 
+  // 文件浏览 Dialog 状态
+  const [fileBrowserOpen, setFileBrowserOpen] = useState(false);
+  const [fileBrowserServer, setFileBrowserServer] = useState<{ id: number; name: string } | null>(null);
+
   // 分页状态
   const [page, setPage] = useState(1);
   const [pageSize, setPageSize] = useState(10);
@@ -82,6 +87,11 @@ export function ServerManager() {
     setTerminalOpen(true);
   };
 
+  const openFileBrowser = ( server: any) => {
+    setFileBrowserServer({ id: server.id, name: server.hostname });
+    setFileBrowserOpen(true);
+  };
+
   const loadData = async (kw?: string, st?: string) => {
     try {
       setLoading(true);
@@ -421,7 +431,7 @@ export function ServerManager() {
       </div>
 
       {/* Stats Cards */}
-      <ServerStatsCards servers={servers} />
+      <ServerStatsStrip servers={servers} />
 
       {/* Filters & Table */}
       <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
@@ -512,6 +522,7 @@ export function ServerManager() {
                       selected={selectedServers.includes(server.id)}
                       onToggleSelect={toggleSelect}
                       onOpenTerminal={openTerminal}
+                      onOpenFiles={openFileBrowser}
                       onOpenEdit={openEditForm}
                       onDelete={handleDelete}
                     />
@@ -603,6 +614,14 @@ export function ServerManager() {
         serverIp={terminalServer?.ip ?? ''}
         hasAuth={terminalServer?.hasAuth ?? true}
       />
+
+      {/* 文件浏览 Dialog */}
+      <ServerFileBrowser
+        open={fileBrowserOpen}
+        onOpenChange={setFileBrowserOpen}
+        serverId={fileBrowserServer?.id ?? null}
+        serverName={fileBrowserServer?.name ?? ''}
+      />
     </div>
   );
 }