release: validate the complete 0.15.0 branch snapshot

Account for concurrent composer, conversation-order, desktop-notification,
and Supervisor discussion changes in bilingual notes and feature matrices.
Correct the removed entity-writeback description in the companion article.

Align the configuration fixture with the default-on notification setting,
scope note-source UI queries and wait for completed actions, and preserve
all real Obsidian child-process checks with a 15-second scenario allowance.

Validation: frozen complete tree passed 5371 Linux tests with 51 skipped;
19 focused Windows tests, typecheck, lint, and release-note validation passed.
The older 5345-test Host result did not cover all concurrent branch changes
and is not treated as validation of this complete candidate.

src/main/obsidian/obsidian-service.test.ts

@@ -127,7 +127,7 @@ describe('offline packaged MCPVault', () => {
     expect(await call('list_directory', {})).toContain('smoke.md')
     expect(await readFile(join(vaultPath, 'smoke.md'), 'utf8')).toContain('status: verified')
     await call('delete_note', { path: 'smoke.md', confirmPath: 'smoke.md', trashMode: 'local' })
-  })
+  }, 15_000)
 
   it('does not launch for an already cancelled call', async () => {
     const start = vi.spyOn(StdioClientTransport.prototype, 'start')

src/renderer/src/App.test.tsx

@@ -14140,19 +14140,22 @@ describe("App", () => {
     await screen.findByText('Source history 101')
     expect(screen.queryByText('Source history 1')).not.toBeInTheDocument()
     fireEvent.click(screen.getByRole('button', { name: '快速笔记' }))
-    fireEvent.click(await screen.findByRole('button', { name: /Source note/ }))
-    fireEvent.click(await screen.findByRole('button', { name: '查看来源消息' }))
+    const notesPanel = within(await screen.findByRole('region', { name: '快速笔记' }))
+    fireEvent.click(await notesPanel.findByRole('button', { name: /Source note/ }))
+    fireEvent.click(await notesPanel.findByRole('button', { name: '查看来源消息' }))
     await waitFor(() => {
       expect(screen.getByText('Source history 1')).toBeVisible()
       expect(document.activeElement).toHaveTextContent('Source history 1')
+      expect(notesPanel.getByRole('button', { name: '查看来源消息' })).toBeEnabled()
     })
     vi.mocked(api.conversations.get).mockResolvedValue({ ...conversation, messages: [] })
-    fireEvent.click(screen.getByRole('button', { name: '查看来源消息' }))
+    fireEvent.click(notesPanel.getByRole('button', { name: '查看来源消息' }))
     expect(await screen.findByText('原消息已不存在')).toBeVisible()
+    await waitFor(() => expect(notesPanel.getByRole('button', { name: '返回原会话' })).toBeEnabled())
     vi.mocked(api.conversations.get).mockRejectedValue(new Error('对话不存在'))
-    fireEvent.click(screen.getByRole('button', { name: '返回原会话' }))
-    expect(await screen.findByRole('button', { name: '原会话已不存在' })).toBeDisabled()
-    expect(screen.getByText('Saved text')).toBeVisible()
+    fireEvent.click(notesPanel.getByRole('button', { name: '返回原会话' }))
+    expect(await notesPanel.findByRole('button', { name: '原会话已不存在' })).toBeDisabled()
+    expect(notesPanel.getByText('Saved text')).toBeVisible()
   }, 15_000)
 
   it('guards disabling Magic Notes with an unsaved quick draft before saving application settings', async () => {

src/shared/goodbuddy-config-contracts.test.ts

@@ -152,6 +152,7 @@ describe('GoodBuddy configuration contracts', () => {
     const snapshot = {
       application: {
         checkUpdatesOnStartup: true,
+        desktopNotificationsEnabled: true,
         updateSource: 'github',
         modelDownloadSource: 'modelscope',
         localToolEnvironment: defaultLocalToolEnvironmentSettings,