diff --git a/src/main/services/text-to-speech-settings-service.ts b/src/main/services/text-to-speech-settings-service.ts
index 2690008..01f62ad 100644
--- a/src/main/services/text-to-speech-settings-service.ts
+++ b/src/main/services/text-to-speech-settings-service.ts
@@ -1,4 +1,4 @@
-import { app } from 'electron'
+import { app, net } from 'electron'
 import fs from 'fs-extra'
 import path from 'path'
 import { randomUUID } from 'crypto'
@@ -119,7 +119,7 @@ export class TextToSpeechSettingsService {
         if (tag.trim()) url.searchParams.append('tag', tag.trim())
       }
 
-      const response = await fetch(url, {
+      const response = await fishAudioFetch(url.toString(), {
         headers: { Authorization: `Bearer ${resolved.key}` },
         signal: AbortSignal.timeout(30_000)
       })
@@ -179,7 +179,7 @@ export class TextToSpeechSettingsService {
     }
 
     try {
-      const response = await fetch(`${FISH_AUDIO_BASE_URL}/v1/tts`, {
+      const response = await fishAudioFetch(`${FISH_AUDIO_BASE_URL}/v1/tts`, {
         method: 'POST',
         headers: {
           Authorization: `Bearer ${resolved.key}`,
@@ -255,10 +255,13 @@ export class TextToSpeechSettingsService {
 
   private async getVoice(id: string, key: string): Promise<TextToSpeechVoice | null> {
     try {
-      const response = await fetch(`${FISH_AUDIO_BASE_URL}/model/${encodeURIComponent(id)}`, {
-        headers: { Authorization: `Bearer ${key}` },
-        signal: AbortSignal.timeout(15_000)
-      })
+      const response = await fishAudioFetch(
+        `${FISH_AUDIO_BASE_URL}/model/${encodeURIComponent(id)}`,
+        {
+          headers: { Authorization: `Bearer ${key}` },
+          signal: AbortSignal.timeout(15_000)
+        }
+      )
       if (!response.ok) return null
       const model = (await response.json()) as FishAudioModelEntity
       return model.type === 'tts' && model.state === 'trained' ? toVoice(model) : null
@@ -351,6 +354,25 @@ async function fishAudioError(response: Response): Promise<Error> {
   return new Error(detail || `语音服务请求失败（HTTP ${response.status}）`)
 }
 
+async function fishAudioFetch(input: string, init: RequestInit): Promise<Response> {
+  try {
+    return await net.fetch(input, init)
+  } catch (electronError) {
+    try {
+      return await fetch(input, init)
+    } catch (nodeError) {
+      throw new Error(
+        `Fish Audio 网络请求失败（Electron: ${networkErrorMessage(electronError)}；Node: ${networkErrorMessage(nodeError)}）`
+      )
+    }
+  }
+}
+
+function networkErrorMessage(error: unknown): string {
+  if (error instanceof Error && error.message.trim()) return error.message.trim()
+  return String(error || '未知错误')
+}
+
 function safeFishAudioError(error: unknown): string {
   if (error instanceof DOMException && error.name === 'TimeoutError') return '语音服务请求超时'
   if (error instanceof Error) return error.message
diff --git a/src/renderer/src/components/FirstUseWelcome.tsx b/src/renderer/src/components/FirstUseWelcome.tsx
index 51ab59a..266bd2f 100644
--- a/src/renderer/src/components/FirstUseWelcome.tsx
+++ b/src/renderer/src/components/FirstUseWelcome.tsx
@@ -48,7 +48,7 @@ export function FirstUseWelcome({
         </DialogDescription>
 
         <Button
-          className="mt-5 h-auto w-full justify-start whitespace-normal p-4 text-left"
+          className="mt-5 !h-auto w-full justify-start whitespace-normal p-4 text-left"
           onClick={onOpenReport}
         >
           <span
diff --git a/src/renderer/src/components/export/ExportPreviewPanel.tsx b/src/renderer/src/components/export/ExportPreviewPanel.tsx
index 4688f1a..c7b9285 100644
--- a/src/renderer/src/components/export/ExportPreviewPanel.tsx
+++ b/src/renderer/src/components/export/ExportPreviewPanel.tsx
@@ -69,7 +69,7 @@ export function ExportPreviewPanel({
     : ''
 
   return (
-    <aside className="flex min-h-0 min-w-0 flex-col overflow-hidden border-l border-border bg-surface max-[1100px]:hidden">
+    <aside className="export-preview-panel flex min-h-0 min-w-0 flex-col overflow-hidden border-l border-border max-[1100px]:hidden">
       {status === 'idle' && (
         <>
           <div className="flex h-[52px] shrink-0 items-center justify-between border-b border-border px-[18px] text-xs text-foreground">
diff --git a/src/renderer/src/features/agent-hub/AgentHubWorkspace.tsx b/src/renderer/src/features/agent-hub/AgentHubWorkspace.tsx
index c03a99e..3712f9d 100644
--- a/src/renderer/src/features/agent-hub/AgentHubWorkspace.tsx
+++ b/src/renderer/src/features/agent-hub/AgentHubWorkspace.tsx
@@ -194,14 +194,32 @@ export function AgentHubWorkspace(): React.ReactElement {
         </section>
 
         <aside className="agent-hub-card agent-hub-capability-card">
-          <span className="agent-hub-card-kicker">本机能力</span>
-          <h2>能力与状态</h2>
+          <span className="agent-hub-card-kicker">已启用能力</span>
+          <h2>微信数据助手</h2>
           <p>机器人通过本机 Agent Hub 调用 TraceMemo，不向公网暴露数据库。</p>
+          <div className="agent-hub-example">
+            <span>支持自然语言，可以这样问</span>
+            <strong>“最近 5 条消息是谁？”</strong>
+            <strong>“帮我看看最近跟xx聊了些什么”</strong>
+            <strong>“生成产品交流群今天的群聊总结图片”</strong>
+          </div>
           <ul>
-            <li>本机 HTTP 通信</li>
-            <li>入站请求鉴权</li>
-            <li>消息重复保护</li>
-            <li>使用已配置 AI 理解自然语言</li>
+            <li>
+              <i />
+              本机 HTTP 通信
+            </li>
+            <li>
+              <i />
+              入站请求鉴权
+            </li>
+            <li>
+              <i />
+              消息重复保护
+            </li>
+            <li>
+              <i />
+              使用已配置 AI 理解自然语言
+            </li>
             <li className="agent-hub-capability-status">
               <i className={status.dataApi === 'online' ? '' : 'offline'} />
               本地数据 API：{status.dataApi === 'online' ? '已连接' : '未连接'}
diff --git a/src/renderer/src/features/settings/pages/TextToSpeechPage.tsx b/src/renderer/src/features/settings/pages/TextToSpeechPage.tsx
index 42d4235..fdb8519 100644
--- a/src/renderer/src/features/settings/pages/TextToSpeechPage.tsx
+++ b/src/renderer/src/features/settings/pages/TextToSpeechPage.tsx
@@ -52,6 +52,7 @@ const RUNTIME_STATUS_LABELS: Record<PersonalWechatRuntimeStatus['state'], string
 }
 
 const VOICE_FILTERS = [
+  { value: 'Chinese', label: '中文' },
   { value: 'male', label: '男性' },
   { value: 'female', label: '女性' },
   { value: 'neutral', label: '中性' },
diff --git a/src/renderer/src/styles/export.scss b/src/renderer/src/styles/export.scss
index 65eed61..e9f04ab 100644
--- a/src/renderer/src/styles/export.scss
+++ b/src/renderer/src/styles/export.scss
@@ -9,6 +9,10 @@
   background: var(--wxex-bg-main);
 }
 
+.export-preview-panel {
+  background: var(--wxex-bg-main);
+}
+
 .export-config-panel {
   position: relative;
   z-index: 1;
diff --git a/src/renderer/src/styles/reports-core.scss b/src/renderer/src/styles/reports-core.scss
index 3904edc..aaa7bf3 100644
--- a/src/renderer/src/styles/reports-core.scss
+++ b/src/renderer/src/styles/reports-core.scss
@@ -1124,21 +1124,44 @@
 .agent-hub-capability-card > p {
   margin-top: 8px;
 }
+.agent-hub-example {
+  margin: 18px 0 14px;
+  padding: 14px;
+  border-radius: var(--wxex-radius-md);
+  background: var(--wxex-brand-soft);
+}
+.agent-hub-example span {
+  display: block;
+  color: var(--wxex-text-muted);
+  font: 600 11px/16px var(--wxex-font);
+}
+.agent-hub-example strong {
+  display: block;
+  margin-top: 4px;
+  color: var(--wxex-brand);
+  font: 700 14px/21px var(--wxex-font);
+}
+.agent-hub-example strong + strong {
+  margin-top: 9px;
+  padding-top: 9px;
+  border-top: 1px solid rgba(36, 122, 99, 0.15);
+}
 .agent-hub-capability-card ul {
-  margin: 18px 0 0;
+  margin: 0;
   padding: 0;
   list-style: none;
 }
 .agent-hub-capability-card li {
   display: flex;
   align-items: center;
-  gap: 8px;
+  gap: 9px;
   padding: 7px 0;
+  border-bottom: 1px solid var(--wxex-border);
   color: var(--wxex-text-secondary);
   font: 13px/19px var(--wxex-font);
 }
-.agent-hub-capability-card li + li {
-  margin-top: 2px;
+.agent-hub-capability-card li:last-child {
+  border-bottom: 0;
 }
 .agent-hub-capability-card li i {
   width: 7px;
@@ -1146,9 +1169,6 @@
   border-radius: 50%;
   background: var(--wxex-brand);
 }
-.agent-hub-capability-card li:not(.agent-hub-capability-status) {
-  padding-left: 15px;
-}
 .agent-hub-capability-card li i.offline {
   background: var(--wxex-danger);
 }
diff --git a/tests/component/agent-hub-controls.test.tsx b/tests/component/agent-hub-controls.test.tsx
index 897dfca..35eff0b 100644
--- a/tests/component/agent-hub-controls.test.tsx
+++ b/tests/component/agent-hub-controls.test.tsx
@@ -59,6 +59,23 @@ describe('Agent Hub controls', () => {
     expect(screen.getByRole('button', { name: '复制日志' })).toBeDisabled()
   })
 
+  it('keeps the enabled capability examples visible', async () => {
+    render(<AgentHubWorkspace />)
+    await screen.findByText('系统就绪')
+
+    expect(screen.getByText('已启用能力')).toBeInTheDocument()
+    expect(screen.getByText('微信数据助手')).toBeInTheDocument()
+    expect(screen.getByText('支持自然语言，可以这样问')).toBeInTheDocument()
+    expect(screen.getByText('“最近 5 条消息是谁？”')).toBeInTheDocument()
+    expect(screen.getByText('“帮我看看最近跟xx聊了些什么”')).toBeInTheDocument()
+    expect(screen.getByText('“生成产品交流群今天的群聊总结图片”')).toBeInTheDocument()
+    expect(
+      document.querySelectorAll(
+        '.agent-hub-capability-card li:not(.agent-hub-capability-status) > i'
+      )
+    ).toHaveLength(4)
+  })
+
   it('keeps reconnect and destructive disconnect actions separate', async () => {
     const user = userEvent.setup()
     render(<AgentHubWorkspace />)
diff --git a/tests/component/export-preview-panel.test.tsx b/tests/component/export-preview-panel.test.tsx
index f4a0481..6c2e84a 100644
--- a/tests/component/export-preview-panel.test.tsx
+++ b/tests/component/export-preview-panel.test.tsx
@@ -16,7 +16,7 @@ const baseProps = {
 }
 
 describe('export progress panel', () => {
-  it('uses the semantic accent surface for outgoing preview messages', () => {
+  it('keeps the preview canvas distinct from the bubble surface', () => {
     render(
       <ExportPreviewPanel
         {...baseProps}
@@ -40,6 +40,7 @@ describe('export progress panel', () => {
     expect(screen.getByText('已发送的消息').closest('.export-preview-bubble')).toHaveClass(
       'bg-accent'
     )
+    expect(screen.getByRole('complementary')).toHaveClass('export-preview-panel')
   })
 
   it('shows an indeterminate bar while the first message scan is still at zero', () => {
diff --git a/tests/unit/text-to-speech-settings-service.test.ts b/tests/unit/text-to-speech-settings-service.test.ts
index 3332979..7bc0209 100644
--- a/tests/unit/text-to-speech-settings-service.test.ts
+++ b/tests/unit/text-to-speech-settings-service.test.ts
@@ -8,6 +8,17 @@ const mocks = vi.hoisted(() => ({
   updateSettings: vi.fn()
 }))
 
+const electronNetFetch = vi.hoisted(() => vi.fn())
+
+vi.mock('electron', () => ({
+  app: {
+    getPath: vi.fn(() => '/tmp/tracememo-test')
+  },
+  net: {
+    fetch: electronNetFetch
+  }
+}))
+
 vi.mock('../../src/main/ai-provider-key-store', () => ({
   AIProviderKeyStore: class {
     get = mocks.keyGet
@@ -66,4 +77,41 @@ describe('TextToSpeechSettingsService', () => {
       ttsSelectedVoiceId: 'fish-model-id'
     })
   })
+
+  it('uses Electron net.fetch for Fish Audio requests', async () => {
+    mocks.keyGet.mockReturnValue({ success: true, available: true, key: 'stored' })
+    electronNetFetch.mockResolvedValue({
+      ok: true,
+      json: vi.fn().mockResolvedValue({ total: 0, items: [], has_more: false })
+    })
+
+    const result = await new TextToSpeechSettingsService().listVoices({ pageSize: 1 })
+
+    expect(result.success).toBe(true)
+    expect(electronNetFetch).toHaveBeenCalledWith(
+      expect.stringContaining('https://api.fish.audio/model'),
+      expect.objectContaining({
+        headers: { Authorization: 'Bearer stored' }
+      })
+    )
+  })
+
+  it('falls back to Node fetch when Electron transport is unavailable', async () => {
+    mocks.keyGet.mockReturnValue({ success: true, available: true, key: 'stored' })
+    electronNetFetch.mockRejectedValue(new TypeError('Electron transport unavailable'))
+    const nodeFetch = vi.fn().mockResolvedValue({
+      ok: true,
+      json: vi.fn().mockResolvedValue({ total: 0, items: [], has_more: false })
+    })
+    vi.stubGlobal('fetch', nodeFetch)
+
+    const result = await new TextToSpeechSettingsService().listVoices({ pageSize: 1 })
+
+    expect(result.success).toBe(true)
+    expect(nodeFetch).toHaveBeenCalledWith(
+      expect.stringContaining('https://api.fish.audio/model'),
+      expect.objectContaining({ headers: { Authorization: 'Bearer stored' } })
+    )
+    vi.unstubAllGlobals()
+  })
 })