feat(web): restore actions after steering consumption

packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx

@@ -102,18 +102,28 @@ describe('MessageItem arms', () => {
     fireEvent.click(screen.getByRole('button', { name: '复制' }))
   })
 
-  it('steering bubbles render text and non-text rest blocks, without user actions or a badge', () => {
+  it('consumed steering renders copy and branch actions without a badge', () => {
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', {
+      configurable: true,
+      value: { writeText },
+    })
+    const fork = vi.fn()
     const view = render(
       <MessageItem t={t} node={{
-        kind: 'steering', seq: 2, turn: 1, source: null,
+        kind: 'steering', messageId: 'steer-message', seq: 2, time: 1_000, turn: 1, source: null,
         content: [{ type: 'text', text: 'steer!' }, { type: 'image', data: 'x' }] as never,
       } as never}
+      onFork={fork}
       />,
     )
     expect(view.queryByText('插话')).toBeNull()
     expect(view.getByText('steer!')).toBeTruthy()
     expect(view.getByText(/附加内容块/)).toBeTruthy()
-    expect(view.queryByRole('button', { name: '复制' })).toBeNull()
+    fireEvent.click(view.getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith('steer!')
+    fireEvent.click(view.getByRole('button', { name: '在新对话中分支' }))
+    expect(fork).toHaveBeenCalledWith(2)
   })
 
   it('context uses the Tool calls disclosure chrome and keeps its JSON collapsed by default', () => {

packages/client/ui-conversation/tests/chat-view.spec.tsx

@@ -252,6 +252,11 @@ describe('ChatView', () => {
   })
 
   it('renders Host-pending steering at the flow tail and hands off to the durable node', () => {
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', {
+      configurable: true,
+      value: { writeText },
+    })
     const pending = {
       id: 'steer-occurrence' as never,
       messageId: 'steer-message' as never,
@@ -273,6 +278,11 @@ describe('ChatView', () => {
 
     expect(view.getByText('interrupt now').closest('[data-pending-steering]')).not.toBeNull()
     expect(view.queryByText('later')).toBeNull()
+    const pendingBubble = view.getByText('interrupt now').closest('[data-pending-steering]')
+    expect(pendingBubble).not.toBeNull()
+    fireEvent.click(within(pendingBubble as HTMLElement).getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith('interrupt now')
+    expect(within(pendingBubble as HTMLElement).queryByRole('button', { name: '在新对话中分支' })).toBeNull()
     expect(view.getByRole('status').compareDocumentPosition(view.getByText('interrupt now'))
       & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(0)
 
@@ -291,6 +301,11 @@ describe('ChatView', () => {
     })
     expect(view.getAllByText('interrupt now')).toHaveLength(1)
     expect(view.container.querySelector('[data-pending-steering]')).toBeNull()
+    expect(view.getAllByRole('button', { name: '复制' })).toHaveLength(2)
+    const branchButtons = view.getAllByRole('button', { name: '在新对话中分支' })
+    expect(branchButtons).toHaveLength(2)
+    fireEvent.click(branchButtons[1]!)
+    expect(h.forkAt).toHaveBeenCalledWith(2)
 
     act(() => { h.set({ queue: [queued] }) })
     expect(view.getAllByText('interrupt now')).toHaveLength(1)