fix(coding): reconcile snapshot after abort

tests/e2e/pi-coding-first-chat.spec.ts

@@ -63,6 +63,7 @@ async function installCodingFirstChatHost(
       captured: CapturedRequest[];
       conversationCreated: boolean;
       interactionAnswered: boolean;
+      abortRequested: boolean;
       releaseSnapshot: (() => void) | null;
       snapshotPending: boolean;
     };
@@ -73,6 +74,7 @@ async function installCodingFirstChatHost(
       captured: [],
       conversationCreated: false,
       interactionAnswered: false,
+      abortRequested: false,
       releaseSnapshot: null,
       snapshotPending: false,
     };
@@ -470,9 +472,44 @@ async function installCodingFirstChatHost(
           state.snapshotPending = false;
         }
         return respond({
-          snapshot: state.interactionAnswered
-            ? { ...snapshot, pendingInteractions: [] }
-            : snapshot,
+          snapshot: state.abortRequested
+            ? {
+                ...snapshot,
+                nodes: snapshot.nodes.map((node) => {
+                  if (node.kind === 'message' && node.role === 'assistant') {
+                    return {
+                      ...node,
+                      status: 'aborted',
+                      blocks: node.blocks.map((block) => ({ ...block, status: 'complete' })),
+                    };
+                  }
+                  if (node.kind === 'subagent') {
+                    return {
+                      ...node,
+                      details: {
+                        ...node.details,
+                        tasks: node.details.tasks.map((task) => (
+                          task.status === 'running' ? { ...task, status: 'aborted' } : task
+                        )),
+                      },
+                    };
+                  }
+                  return node;
+                }),
+                run: {
+                  status: 'idle',
+                  runId: 'run-e2e-feature',
+                  mode: 'prompt',
+                  settledAt: 12_000,
+                  terminalReason: 'aborted',
+                },
+                queue: { items: [] },
+                pendingInteractions: [],
+                cursor: { workerGeneration: 1, seq: 1 },
+              }
+            : state.interactionAnswered
+              ? { ...snapshot, pendingInteractions: [] }
+              : snapshot,
         });
       }
       if (path === `/api/coding/conversations/${secondConversation.id}/snapshot`) {
@@ -489,7 +526,11 @@ async function installCodingFirstChatHost(
           },
         }, 202);
       }
-      if (/^\/api\/coding\/conversations\/[^/]+\/(abort|compact|recover)$/.test(path) && method === 'POST') {
+      if (/^\/api\/coding\/conversations\/[^/]+\/abort$/.test(path) && method === 'POST') {
+        state.abortRequested = true;
+        return respond({});
+      }
+      if (/^\/api\/coding\/conversations\/[^/]+\/(compact|recover)$/.test(path) && method === 'POST') {
         return respond({});
       }
       if (/^\/api\/coding\/conversations\/[^/]+\/model$/.test(path) && method === 'POST') {
@@ -795,6 +836,9 @@ test('PI feature UI isolates Conversations and exposes queue, interaction, model
     await expect(runtimeSettings).not.toHaveClass(/bg-surface-subtle\/75/);
     await expect(runtimeSettings).toBeDisabled();
     await page.getByRole('button', { name: '中止', exact: true }).click();
+    await expect(page.getByRole('button', { name: '中止', exact: true })).toHaveCount(0);
+    await expect(composer.getByRole('button', { name: '中止生成' })).toHaveCount(0);
+    await expect(runtimeSettings).toBeEnabled();
 
     const builderConversations = page.getByRole('group', { name: 'Builder 的对话' });
     await expect(builderConversations).toBeVisible();
@@ -806,6 +850,7 @@ test('PI feature UI isolates Conversations and exposes queue, interaction, model
     await expect(page.getByText('本地编程运行时暂时不可用')).toHaveCount(0);
     await builderConversations.getByRole('button', { name: /^新对话/ }).click();
     await expect(page.getByText('Durable user fork source')).toBeVisible();
+    await page.getByTestId('coding-process-group').locator('summary').first().click();
     await expect(page.getByText('Durable assistant response')).toBeVisible();
     await expect(page.getByRole('button', { name: '从这里创建新对话分支' })).toHaveCount(1);
     await builderConversations.getByRole('button', { name: 'Second Conversation' }).click();

tests/unit/coding-chat-panel.test.tsx

@@ -695,6 +695,45 @@ describe('CodingChatPanel first Conversation', () => {
     expect(screen.getByRole('button', { name: '发送' })).toBeEnabled();
   });
 
+  it('refreshes the authoritative Snapshot after abort when the terminal SSE patch was missed', async () => {
+    projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
+    projectApi.config.mockResolvedValue({ project, config });
+    projectApi.conversations.mockResolvedValue([conversation]);
+    conversationApi.events.mockResolvedValue(new FakeEventSource() as unknown as EventSource);
+    conversationApi.recover.mockResolvedValue(undefined);
+    conversationApi.abort.mockResolvedValue(undefined);
+    const { CodingChatPanel } = await import('@/pages/Chat/CodingChatPanel');
+    const { createLocalConversationSnapshot } = await import('@/pages/Chat/coding-chat-snapshot');
+    const runningSnapshot: ConversationSnapshot = {
+      ...createLocalConversationSnapshot(project.id, conversation),
+      worker: { status: 'ready', generation: 1 },
+      run: { status: 'running', runId: 'run-stale', mode: 'prompt' },
+      cursor: { workerGeneration: 1, seq: 7 },
+    };
+    const settledSnapshot: ConversationSnapshot = {
+      ...runningSnapshot,
+      run: {
+        status: 'idle',
+        runId: 'run-stale',
+        mode: 'prompt',
+        settledAt: 12_000,
+        terminalReason: 'completed',
+      },
+      cursor: { workerGeneration: 1, seq: 8 },
+    };
+    conversationApi.snapshot
+      .mockResolvedValueOnce(runningSnapshot)
+      .mockResolvedValueOnce(settledSnapshot);
+    render(<CodingChatPanel />);
+
+    const abortButton = await screen.findByRole('button', { name: '中止生成' });
+    fireEvent.click(abortButton);
+
+    await waitFor(() => expect(conversationApi.abort).toHaveBeenCalledWith(conversation.id));
+    await waitFor(() => expect(conversationApi.snapshot).toHaveBeenCalledTimes(2));
+    expect(await screen.findByRole('button', { name: '发送' })).toBeInTheDocument();
+  });
+
   it('caps one message at 16 images and uploads at most four concurrently', async () => {
     projectApi.list.mockResolvedValue({ projects: [project], activeProjectId: project.id });
     projectApi.config.mockResolvedValue({ project, config });

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

@@ -219,6 +219,7 @@ describe('PI-130 feature-complete Coding UI', () => {
           conversation={null}
           snapshot={null}
           onRename={vi.fn(async () => undefined)}
+          onAbort={vi.fn(async () => undefined)}
           onRecover={vi.fn(async () => undefined)}
         />
       </>,
@@ -367,6 +368,7 @@ describe('PI-130 feature-complete Coding UI', () => {
     interactionApi.thinking.mockResolvedValue({ model: null, modelResolution: 'required' });
     const callbacks = {
       rename: vi.fn(async () => undefined),
+      abort: vi.fn(async () => undefined),
       refresh: vi.fn(async () => undefined),
       recover: vi.fn(async () => undefined),
     };
@@ -410,6 +412,7 @@ describe('PI-130 feature-complete Coding UI', () => {
           conversation={conversation}
           snapshot={snapshot}
           onRename={callbacks.rename}
+          onAbort={callbacks.abort}
           onRecover={callbacks.recover}
         />
         <CodingComposer
@@ -635,6 +638,7 @@ describe('PI-130 feature-complete Coding UI', () => {
           conversation={conversation}
           snapshot={snapshot}
           onRename={vi.fn(async () => undefined)}
+          onAbort={async () => interactionApi.abort('conversation-uncertain')}
           onRecover={recover}
         />
         <CodingComposerRuntimeControls