fix(design): restore streamed replies and quote handoff

tests/unit/image-workspace-store.test.ts

@@ -523,6 +523,25 @@ describe('V2 Living Form store', () => {
     const source = await loadedStore();
     useImageWorkspaceStore.getState().setFieldDraft('intent.purpose', '本地草稿');
     useImageWorkspaceStore.setState({
+      assistantStreams: { 'operation-chat-unknown': '这段回复还没确认' },
+      pendingOperations: {
+        'operation-chat-unknown': {
+          id: 'operation-chat-unknown',
+          label: '发送创作想法',
+          command: {
+            kind: 'apply_input',
+            workspaceId: 'workspace-1',
+            sessionId: 'session-1',
+            expectedDirectionRevision: 4,
+            clientOperationId: 'operation-chat-unknown',
+            input: { kind: 'chat', message: '保留这条未知结果' },
+          },
+          status: 'unknown',
+          error: '结果尚未确认',
+          clearDraftPaths: [],
+          clearChatDraft: true,
+        },
+      },
       quoteBlockers: [{
         code: 'missing_choice',
         message: '还需要选择作品形状',
@@ -573,9 +592,12 @@ describe('V2 Living Form store', () => {
       }),
     });
 
+    expect(useImageWorkspaceStore.getState().assistantStreams).toEqual({
+      'operation-chat-unknown': '这段回复还没确认',
+      'operation-chat-1': '正在整理',
+    });
     expect(useImageWorkspaceStore.getState()).toMatchObject({
       lastEventId: 'session-1:8',
-      assistantStreams: { 'operation-chat-1': '正在整理' },
       fieldDrafts: { 'intent.purpose': '本地草稿' },
       quoteBlockers: [],
       workspace: { form: { directionRevision: 5, specificationRevision: 4 } },