feat(desktop): dynamic About version, update manifest date, and a unified publish flow

The About section hardcoded its version; the main process now exposes
get-app-info so it reads app.getVersion() dynamically, and the update result
carries the manifest release date. The manifest generator orders versions
numerically (0.10.0 outranks 0.9.0). A new stage-release script copies
releases.json plus installers into the deepseek-harness-web site root's
updates/, which deploy.py publishes to OSS alongside the download page, so the
app and web share one update channel. The About section also gains links to the
release site and official site.

Co-Authored-By: Claude <noreply@anthropic.com>

packages/client/ui-settings-general/tests/components.client.spec.tsx

@@ -63,15 +63,26 @@ describe('GeneralSection', () => {
 describe('AboutSection', () => {
   const aboutProps: AboutSectionComponentProps = { close: vi.fn(), t } as never
 
-  it('renders the company copy and the current version', () => {
+  it('renders the company copy and a current-version row (fallback on plain web)', () => {
     render(<AboutSection {...aboutProps} />)
     expect(screen.getByText('PineSound')).toBeTruthy()
     expect(screen.getByText('AI audio creation platform')).toBeTruthy()
     expect(screen.getByText(en['about.currentVersion'])).toBeTruthy()
-    expect(screen.getByText('0.1.0-rc.5')).toBeTruthy()
+    // No desktop bridge on a plain web surface: the version row falls back.
+    expect(screen.getByText('—')).toBeTruthy()
     expect(screen.getByRole('button', { name: en['about.checkUpdates'] })).toBeTruthy()
   })
 
+  it('shows the packaged version from the desktop bridge', async () => {
+    ;(window as { dshApp?: unknown }).dshApp = { getAppInfo: vi.fn(async () => ({ version: '0.1.0-rc.5' })) }
+    try {
+      render(<AboutSection {...aboutProps} />)
+      await screen.findByText('0.1.0-rc.5')
+    } finally {
+      delete (window as { dshApp?: unknown }).dshApp
+    }
+  })
+
   it('reports up-to-date on a web surface without the desktop bridge', async () => {
     render(<AboutSection {...aboutProps} />)
     fireEvent.click(screen.getByRole('button', { name: en['about.checkUpdates'] }))
@@ -83,20 +94,31 @@ describe('AboutSection', () => {
   it('shows a download link when the bridge reports a newer version', async () => {
     const checkUpdate = vi.fn(async () => ({
       status: 'update-available' as const, current: '0.1.0-rc.5', latest: '0.1.0-rc.6',
-      notes: 'New release', url: 'https://example.com/app.dmg',
+      date: '2026-08-01', notes: 'New release', url: 'https://example.com/app.dmg',
     }))
-    ;(window as { dshApp?: unknown }).dshApp = { checkUpdate }
+    ;(window as { dshApp?: unknown }).dshApp = {
+      checkUpdate,
+      getAppInfo: vi.fn(async () => ({ version: '0.1.0-rc.5' })),
+    }
     try {
       render(<AboutSection {...aboutProps} />)
       fireEvent.click(screen.getByRole('button', { name: en['about.checkUpdates'] }))
       const status = await screen.findByRole('status')
       expect(status.textContent).toContain(en['about.updateAvailable'])
       expect(status.textContent).toContain('0.1.0-rc.6')
+      expect(status.textContent).toContain('2026-08-01')
+      expect(status.textContent).toContain('New release')
       expect(screen.getByRole('link', { name: en['about.download'] }).getAttribute('href')).toBe('https://example.com/app.dmg')
     } finally {
       delete (window as { dshApp?: unknown }).dshApp
     }
   })
+
+  it('links to the release site and the official site', () => {
+    render(<AboutSection {...aboutProps} />)
+    expect(screen.getByRole('link', { name: en['about.releaseSite'] }).getAttribute('href')).toBe('https://deepseek.pinesound.cn/')
+    expect(screen.getByRole('link', { name: en['about.officialSite'] }).getAttribute('href')).toBe('https://www.deepseek.com/')
+  })
 })
 
 describe('SettingsDocumentAction', () => {