diff --git a/src/api/costs.ts b/src/api/costs.ts
index e63a51f..2626209 100644
--- a/src/api/costs.ts
+++ b/src/api/costs.ts
@@ -1,9 +1,10 @@
 import { api } from '@/lib/api-client'
 
-export interface CostItem { id: string; currency: string; amount: number; [key: string]: any }
+export interface CostItem { id: string; name: string; currency: string; amount: number; purchaseDate?: string; expiryDate?: string; [key: string]: any }
+export interface CostSummary { totalMonthly: number; totalYearly: number; totalOneTime: number; items: CostItem[]; byMonth: any[]; expiringSoon: any[] }
 
 export const costsAPI = {
-  summary() { return api.get<{ totalMonthly: number; byProvider: Record<string, number> }>('/admin-api/costs/summary') },
+  summary() { return api.get<CostSummary>('/admin-api/costs/summary') },
   list() { return api.get<CostItem[]>('/admin-api/costs') },
   create(data: Omit<CostItem, 'id' | 'currency'> & { currency?: string }) { return api.post<CostItem>('/admin-api/costs', data) },
   update(id: string, data: Partial<CostItem>) { return api.patch<CostItem>(`/admin-api/costs/${id}`, data) },
diff --git a/src/api/index.ts b/src/api/index.ts
index 32aefc4..680b1af 100644
--- a/src/api/index.ts
+++ b/src/api/index.ts
@@ -3,12 +3,12 @@ export { usersAPI } from './users'
 export { dashboardAPI } from './dashboard'
 export { auditAPI } from './audit'
 export { billingAPI, type BillingInfo } from './billing'
-export { costsAPI } from './costs'
+export { costsAPI, type CostItem, type CostSummary } from './costs'
 export { configAPI } from './config'
-export { conversationsAPI } from './conversations'
+export { conversationsAPI, type Conversation } from './conversations'
 export { eventsQueueAPI } from './events-queue'
 export { knowledgeAPI } from './knowledge'
-export { serversAPI } from './servers'
+export { serversAPI, type ServerInfo, type ProcessInfo, type ServerHealth, type HealthService } from './servers'
 export { learningAPI } from './learning'
 export { aiAPI } from './ai'
 
diff --git a/src/api/servers.ts b/src/api/servers.ts
index acce87a..3b1fd6e 100644
--- a/src/api/servers.ts
+++ b/src/api/servers.ts
@@ -1,8 +1,18 @@
 import { api } from '@/lib/api-client'
 
-export interface ServerInfo { hostname: string; cpu: number; memory: number; [key: string]: any }
-export interface ServerHealth { name: string; status: string; [key: string]: any }
-export interface WorkerInfo { name: string; status: string; [key: string]: any }
+export interface ServerInfo {
+  hostname: string
+  cpu: { usagePercent: number; cores: number; model?: string }
+  memory: { percent: number; used: string; total: string }
+  network: { domains: string[]; privateIp?: string; publicIp?: string }
+  disks: { mount: string; size: string; used: string; percent: number }[]
+  [key: string]: any
+}
+
+export interface ProcessInfo { pid: number; name: string; cpu: number; memory: number; desc?: string; command?: string; [key: string]: any }
+export interface HealthService { serviceName: string; status: string; message?: string }
+export interface ServerHealth { name: string; status: string; uptime?: string; pid?: number; services?: HealthService[]; queues?: string[]; [key: string]: any }
+export interface WorkerInfo { name: string; status: string; queues?: string[]; [key: string]: any }
 
 export const serversAPI = {
   metrics() { return api.get<{ servers: ServerInfo[] }>('/admin-api/servers') },
diff --git a/src/pages/Billing.tsx b/src/pages/Billing.tsx
index da34cc0..238ea48 100644
--- a/src/pages/Billing.tsx
+++ b/src/pages/Billing.tsx
@@ -2,7 +2,7 @@ import { useState } from 'react'
 import { useQuery, useQueryClient } from '@tanstack/react-query'
 import { Card, Row, Col, Statistic, Button, Tag, Space, Typography, App, Table, Modal, Form, Input, Select, DatePicker, InputNumber, Tabs } from 'antd'
 import { DollarOutlined, ReloadOutlined, LinkOutlined, PlusOutlined, DeleteOutlined, EditOutlined, CloudOutlined, DownloadOutlined } from '@ant-design/icons'
-import { billingAPI, costsAPI, type BillingInfo } from '@/api'
+import { billingAPI, costsAPI, type BillingInfo, type CostItem, type CostSummary } from '@/api'
 import dayjs from 'dayjs'
 
 const { Text, Title } = Typography
diff --git a/src/pages/ImportMonitor.tsx b/src/pages/ImportMonitor.tsx
index 021a49d..14c1c3c 100644
--- a/src/pages/ImportMonitor.tsx
+++ b/src/pages/ImportMonitor.tsx
@@ -30,7 +30,7 @@ export default function ImportMonitorPage() {
 
   // 知识库远程搜索（防抖）
   const [kbSearch, setKbSearch] = useState('')
-  const kbSearchTimer = useRef<ReturnType<typeof setTimeout>>()
+  const kbSearchTimer = useRef<ReturnType<typeof setTimeout>>(undefined)
 
   const handleKbSearch = useCallback((val: string) => {
     clearTimeout(kbSearchTimer.current)
diff --git a/src/pages/KnowledgeBases.tsx b/src/pages/KnowledgeBases.tsx
index ca1089e..c2e4501 100644
--- a/src/pages/KnowledgeBases.tsx
+++ b/src/pages/KnowledgeBases.tsx
@@ -30,7 +30,7 @@ function KBPage() {
   const [refSourceId, setRefSourceId] = useState<string | null>(null)
   const { data: references } = useQuery({
     queryKey: ['source-refs', refSourceId],
-    queryFn: (): Promise<any> => knowledgeAPI.sourceReferences(refSourceId),
+    queryFn: (): Promise<any> => knowledgeAPI.sourceReferences(refSourceId || ''),
     enabled: !!refSourceId,
   })
 
diff --git a/src/pages/KnowledgeSources.tsx b/src/pages/KnowledgeSources.tsx
index c77194b..e6f088b 100644
--- a/src/pages/KnowledgeSources.tsx
+++ b/src/pages/KnowledgeSources.tsx
@@ -26,23 +26,6 @@ interface KnowledgeSourceItem {
   kbName?: string
 }
 
-interface PaginatedSources {
-  items: KnowledgeSourceItem[]
-  total: number
-  page: number
-  limit: number
-}
-
-interface KnowledgeBaseItem {
-  id: string
-  title?: string
-  name?: string
-}
-
-interface PaginatedKnowledgeBases {
-  items: KnowledgeBaseItem[]
-}
-
 // ── Labels ──
 
 const mimeLabels: Record<string, string> = {
diff --git a/src/pages/ReportingAdmin.tsx b/src/pages/ReportingAdmin.tsx
index 564783e..ae0af48 100644
--- a/src/pages/ReportingAdmin.tsx
+++ b/src/pages/ReportingAdmin.tsx
@@ -24,7 +24,7 @@ export default function ReportingAdmin() {
 
   const download = async (type: string) => {
     try {
-      const text = await reportingAPI.exportCSV(type, days)
+      const text = await reportingAPI.exportCSV(type, String(days))
       downloadBlob(text as string, `${type}-report-${days}d.csv`)
     } catch {
       message.error('导出失败')
diff --git a/src/pages/Servers.tsx b/src/pages/Servers.tsx
index d8ee90f..0b406c9 100644
--- a/src/pages/Servers.tsx
+++ b/src/pages/Servers.tsx
@@ -2,7 +2,7 @@ import { useState } from 'react'
 import { useQuery, useQueryClient } from '@tanstack/react-query'
 import { Card, Row, Col, Progress, Table, Tag, Typography, Button, Space, Tooltip, App } from 'antd'
 import { CloudServerOutlined, ReloadOutlined, CopyOutlined, GlobalOutlined } from '@ant-design/icons'
-import { serversAPI, type ServerInfo, type ServerHealth } from '@/api/servers'
+import { serversAPI, type ServerInfo, type ProcessInfo, type ServerHealth } from '@/api/servers'
 
 const { Text, Title } = Typography
 
@@ -28,8 +28,8 @@ function ServerCard({ server }: { server: ServerInfo }) {
       {/* IP & domains — fixed height */}
       <div style={{ marginBottom: 12, height: 54, overflow: 'hidden' }}>
         <Space wrap size={[4, 4]}>
-          <CopyTag text={server.network.publicIp} icon="🌐 " color="cyan" />
-          <CopyTag text={server.network.privateIp} icon="🔒 " />
+          <CopyTag text={server.network.publicIp || ''} icon="🌐 " color="cyan" />
+          <CopyTag text={server.network.privateIp || ''} icon="🔒 " />
           {server.network.domains.map(d => (
             <CopyTag key={d} text={d} icon={<GlobalOutlined style={{ marginRight: 2 }} />} color="blue" />
           ))}
@@ -186,7 +186,7 @@ function ServersContent() {
           {(health as ServerHealth[]).map(h => (
             <Card key={h.serverName} title={h.serverName} size="small" style={{ marginBottom: 8 }}>
               <Space wrap>
-                {h.services.map(s => (
+                {(h.services ?? []).map(s => (
                   <Tag key={s.serviceName} color={s.status === 'healthy' ? 'green' : 'red'}>
                     {s.serviceName} · {s.message}
                   </Tag>
diff --git a/src/pages/TaskAssistant.tsx b/src/pages/TaskAssistant.tsx
index 78eddd3..c74448f 100644
--- a/src/pages/TaskAssistant.tsx
+++ b/src/pages/TaskAssistant.tsx
@@ -1,7 +1,7 @@
 import { useState, useRef, useEffect, useCallback } from 'react'
 import { Input, Button, Typography, App, message as antMsg } from 'antd'
 import { PlusOutlined, ToolOutlined, DeleteOutlined, MessageOutlined, ArrowUpOutlined, CopyOutlined } from '@ant-design/icons'
-import { aiAPI, conversationsAPI } from '@/api'
+import { aiAPI, conversationsAPI, type Conversation } from '@/api'
 import { streamChat, type StreamEvent } from '@/services/ai-chat'
 import Markdown from '@/components/Markdown'
 
@@ -37,7 +37,7 @@ function ChatPage() {
   const switchConversation = useCallback(async (id: string) => {
     if (streaming) { abortRef.current?.abort(); setStreaming(false); setWaitingApproval(false) }
     setActiveId(id); setMessages([])
-    try { const records = await conversationsAPI.messages(id); setMessages(records.map(m => ({ id: m.id, role: m.role, content: m.content, timestamp: new Date(m.createdAt).getTime() }))) } catch {}
+    try { const records = await conversationsAPI.messages(id); setMessages(records.map(m => ({ id: m.id, role: m.role as 'user' | 'assistant', content: m.content, timestamp: new Date(m.createdAt).getTime() }))) } catch {}
   }, [streaming])
 
   const handleNew = async () => {
diff --git a/src/pages/learning/DailyActivityPage.tsx b/src/pages/learning/DailyActivityPage.tsx
index 925f6ad..fcdf8ea 100644
--- a/src/pages/learning/DailyActivityPage.tsx
+++ b/src/pages/learning/DailyActivityPage.tsx
@@ -1,5 +1,5 @@
 import { useState } from 'react';
-import { Table, Input, Select, Space, Button, Drawer, Descriptions, DatePicker } from 'antd';
+import { Table, Input, Space, Button, Drawer, Descriptions, DatePicker } from 'antd';
 import { useQuery } from '@tanstack/react-query';
 import { learningAPI } from '@/api';
 import { PageWrapper } from './PageWrapper';
diff --git a/src/pages/learning/SessionPage.tsx b/src/pages/learning/SessionPage.tsx
index 7a485fe..f5f8ba6 100644
--- a/src/pages/learning/SessionPage.tsx
+++ b/src/pages/learning/SessionPage.tsx
@@ -1,5 +1,5 @@
 import { useState } from 'react';
-import { Table, Input, Select, Space, Tag, Button, Tabs, Drawer, Descriptions, DatePicker, Timeline, Typography, Popconfirm } from 'antd';
+import { Table, Input, Select, Space, Tag, Button, Drawer, Descriptions, Popconfirm } from 'antd';
 import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { learningAPI } from '@/api';
 import { sessionStatusLabels, targetTypeLabels, sessionModeLabels } from '@/constants/labels';
diff --git a/src/routes/index.tsx b/src/routes/index.tsx
index 94ea49a..c17e7e7 100644
--- a/src/routes/index.tsx
+++ b/src/routes/index.tsx
@@ -6,15 +6,15 @@ const UserManagement = lazy(() => import('@/pages/UserManagement'))
 const MemberManagement = lazy(() => import('@/pages/MemberManagement'))
 
 const LearningDashboard = lazy(() => import('@/pages/learning/Dashboard'))
-const ReadingEventPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.ReadingEventPage })))
-const SessionPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.SessionPage })))
-const ProgressPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.ProgressPage })))
-const DailyActivityPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.DailyActivityPage })))
-const RecordPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.RecordPage })))
-const AnomalyPage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.AnomalyPage })))
-const UserTimelinePage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.UserTimelinePage })))
-const UserDiagnosePage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.UserDiagnosePage })))
-const MaterialDiagnosePage = lazy(() => import('@/pages/learning/DataPages').then(m => ({ default: m.MaterialDiagnosePage })))
+const ReadingEventPage = lazy(() => import('@/pages/learning/ReadingEventPage'))
+const SessionPage = lazy(() => import('@/pages/learning/SessionPage'))
+const ProgressPage = lazy(() => import('@/pages/learning/ProgressPage'))
+const DailyActivityPage = lazy(() => import('@/pages/learning/DailyActivityPage'))
+const RecordPage = lazy(() => import('@/pages/learning/RecordPage'))
+const AnomalyPage = lazy(() => import('@/pages/learning/AnomalyPage'))
+const UserTimelinePage = lazy(() => import('@/pages/learning/UserTimelinePage'))
+const UserDiagnosePage = lazy(() => import('@/pages/learning/UserDiagnosePage'))
+const MaterialDiagnosePage = lazy(() => import('@/pages/learning/MaterialDiagnosePage'))
 const ServersPage = lazy(() => import('@/pages/Servers'))
 const KnowledgeSourcesPage = lazy(() => import('@/pages/KnowledgeSources'))
 const LearningReplay = lazy(() => import('@/pages/learning/ReplayPage'))