fix(pi): converge worker failures and thinking state

tests/unit/coding-feature-ui.test.tsx

@@ -1,4 +1,4 @@
-import { fireEvent, render, screen, waitFor } from '@testing-library/react';
+import { fireEvent, render, screen, waitFor, within } from '@testing-library/react';
 import { describe, expect, it, vi } from 'vitest';
 import type { ProviderAccount, ProviderVendorInfo } from '@/lib/providers';
 
@@ -102,6 +102,41 @@ describe('PI-130 feature-complete Coding UI', () => {
     expect(onSubmit).toHaveBeenCalledOnce();
   });
 
+  it('unlocks editing and offers recovery after the local Agent exits', async () => {
+    const onRecover = vi.fn();
+    const { CodingComposer } = await import('@/pages/Chat/CodingComposer');
+    render(
+      <CodingComposer
+        value="Draft remains editable"
+        editable
+        canSend={false}
+        preparing={false}
+        recovering={false}
+        runStatus="error"
+        mode="prompt"
+        queue={{ items: [] }}
+        error="本地 Agent 已中断，原请求未自动重发。"
+        recoverableError
+        acceptedCount={0}
+        attachments={[]}
+        submitting={false}
+        placeholder="Prompt"
+        onChange={vi.fn()}
+        onModeChange={vi.fn()}
+        onSubmit={vi.fn()}
+        onRecover={onRecover}
+        onAddFiles={vi.fn()}
+        onRemoveAttachment={vi.fn()}
+      />,
+    );
+
+    expect(screen.getByRole('textbox')).toBeEnabled();
+    expect(screen.getByRole('alert')).toHaveTextContent('本地 Agent 已中断，原请求未自动重发。');
+    expect(screen.queryByText('当前对话正在处理。')).not.toBeInTheDocument();
+    fireEvent.click(screen.getByRole('button', { name: '重试' }));
+    expect(onRecover).toHaveBeenCalledOnce();
+  });
+
   it('answers product interactions and explains stale responses', async () => {
     interactionApi.respond.mockResolvedValueOnce(undefined).mockRejectedValueOnce(new Error('409 stale'));
     const { CodingInteractionPanel } = await import('@/pages/Chat/CodingInteractionPanel');
@@ -198,8 +233,9 @@ describe('PI-130 feature-complete Coding UI', () => {
             agentId: 'agent-1',
             title: 'Feature UI',
             model: {
-              model: { accountId: 'account-1', modelId: 'model-a', thinkingLevel: 'medium' },
+              model: { accountId: 'account-1', modelId: 'model-a', thinkingLevel: 'high' },
               modelResolution: 'resolved',
+              availableThinkingLevels: ['high'],
             },
           },
           nodes: [],
@@ -227,9 +263,13 @@ describe('PI-130 feature-complete Coding UI', () => {
     await waitFor(() => expect(interactionApi.model).toHaveBeenCalledWith('conversation-1', {
       accountId: 'account-1',
       modelId: 'model-b',
-      thinkingLevel: 'medium',
+      thinkingLevel: 'high',
     }));
     await waitFor(() => expect(callbacks.refresh).toHaveBeenCalledOnce());
+    const thinkingSelect = screen.getByRole('combobox', { name: '当前对话思考级别' });
+    expect(within(thinkingSelect).getAllByRole('option')).toHaveLength(1);
+    expect(within(thinkingSelect).getByRole('option', { name: '高思考' })).toBeInTheDocument();
+    expect(within(thinkingSelect).queryByRole('option', { name: '关闭思考' })).not.toBeInTheDocument();
     fireEvent.click(screen.getByRole('button', { name: '中止' }));
     await waitFor(() => expect(interactionApi.abort).toHaveBeenCalledWith('conversation-1'));
     fireEvent.click(screen.getByRole('button', { name: '创建分支' }));