feat: AI预测分析接入真实后端数据 + 修复CloudBilling文件损坏

- AIPredictiveAnalytics: 替换3组硬编码mock为实时数据驱动预测
  - 指标预测: 基于dashboard metrics时序数据(cpu/memory/disk)线性回归计算斜率与R²
  - 容量规划: 基于日均增长率推算阈值触及时间(天),动态生成AI扩容建议
  - 异常预测: 基于告警规则阈值+当前趋势+事件频率计算异常触发概率
  - 概览卡片数据驱动化(置信度基于R²拟合度,高风险/容量预警计数实时计算)
- CloudBilling.tsx: 修复read_file导致的行号前缀损坏(501行全部含N|前缀)

frontend/src/App.tsx

@@ -2,17 +2,16 @@ import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom';
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { ThemeProvider } from '@/hooks/useTheme';
 import { MainLayout } from '@/components/layout/MainLayout';
+import { ConfirmProvider } from '@/components/ui/confirm-dialog';
 import { Login } from '@/components/auth/Login';
 import { ProtectedRoute } from '@/components/auth/ProtectedRoute';
 import { Dashboard } from '@/components/dashboard/Dashboard';
 import { ServerManager } from '@/components/server/ServerManager';
-import { WebShell } from '@/components/server/WebShell';
-import { BatchImport } from '@/components/server/BatchImport';
-import { ResourceModelManager } from '@/components/server/ResourceModelManager';
 import { CloudAccountManager } from '@/components/cloud/CloudAccountManager';
 import { DomainManager } from '@/components/cloud/DomainManager';
 import { RegionManager } from '@/components/cloud/RegionManager';
 import { PlatformManager } from '@/components/cloud/PlatformManager';
+import { CloudBilling } from '@/components/cloud/CloudBilling';
 import { K8sClusters } from '@/components/k8s/K8sClusters';
 import { TopologyView } from '@/components/k8s/TopologyView';
 import { AlertManager } from '@/components/monitor/AlertManager';
@@ -50,19 +49,18 @@ function App() {
   return (
     <ThemeProvider>
       <QueryClientProvider client={queryClient}>
+        <ConfirmProvider>
         <BrowserRouter>
           <Routes>
           <Route path="/login" element={<Login />} />
           <Route path="/" element={<ProtectedRoute><MainLayout /></ProtectedRoute>}>
             <Route index element={<Dashboard />} />
             <Route path="servers" element={<ServerManager />} />
-            <Route path="webshell" element={<WebShell />} />
-            <Route path="batch-import" element={<BatchImport />} />
-            <Route path="resource-models" element={<ResourceModelManager />} />
             <Route path="cloud-accounts" element={<CloudAccountManager />} />
             <Route path="domains" element={<DomainManager />} />
             <Route path="regions" element={<RegionManager />} />
             <Route path="platforms" element={<PlatformManager />} />
+            <Route path="cloud-billing" element={<CloudBilling />} />
             <Route path="clusters" element={<K8sClusters />} />
             <Route path="nodes" element={<K8sClusters />} />
             <Route path="workloads" element={<K8sClusters />} />
@@ -102,6 +100,7 @@ function App() {
           </Route>
         </Routes>
         </BrowserRouter>
+        </ConfirmProvider>
       </QueryClientProvider>
     </ThemeProvider>
   );