fix(design): preserve command outcome certainty

tests/unit/works-square-design-workspace.test.ts

@@ -254,6 +254,77 @@ describe('Works Square V2 Design Workspace adapter', () => {
     );
   });
 
+  it('projects an invalid reasoner result as a safe actionable message', async () => {
+    const fetchMock = vi.fn(async (input: string | URL) => {
+      const url = String(input);
+      if (url.endsWith('/commands')) {
+        return jsonResponse({ run_id: 'run-1', status: 'queued', error: null });
+      }
+      if (url.endsWith('/runs/run-1')) {
+        return jsonResponse({
+          run_id: 'run-1',
+          status: 'failed',
+          error: {
+            code: 'design_reasoner_invalid',
+            message: 'Design guidance returned an invalid result',
+            retryable: false,
+          },
+        });
+      }
+      throw new Error(`Unexpected URL: ${url}`);
+    });
+    const module = new WorksSquareDesignWorkspace({
+      apiBaseUrl: 'https://works.example',
+      fetchImpl: fetchMock as unknown as typeof fetch,
+    });
+
+    await expect(module.submitCommand({
+      kind: 'apply_input',
+      workspaceId: 'workspace-1',
+      sessionId: 'session-1',
+      expectedDirectionRevision: 4,
+      clientOperationId: 'operation-chat-1',
+      input: { kind: 'chat', message: '画一只会做饭的机器人' },
+    })).rejects.toMatchObject({
+      status: 502,
+      code: 'design_reasoner_invalid',
+      message: 'AI 没有整理好这次想法，请再试一次',
+      commandOutcome: 'definitive_failure',
+    } satisfies Partial<DesignWorkspaceModuleError>);
+  });
+
+  it('marks polling auth failure as unknown after the command was accepted', async () => {
+    getTokenMock
+      .mockResolvedValueOnce('access-token')
+      .mockResolvedValueOnce('access-token')
+      .mockResolvedValueOnce(null);
+    const fetchMock = vi.fn(async (input: string | URL) => {
+      const url = String(input);
+      if (url.endsWith('/commands')) {
+        return jsonResponse({ run_id: 'run-1', status: 'queued', error: null });
+      }
+      if (url.endsWith('/runs/run-1')) return jsonResponse({ detail: 'expired' }, 401);
+      throw new Error(`Unexpected URL: ${url}`);
+    });
+    const module = new WorksSquareDesignWorkspace({
+      apiBaseUrl: 'https://works.example',
+      fetchImpl: fetchMock as unknown as typeof fetch,
+    });
+
+    await expect(module.submitCommand({
+      kind: 'apply_input',
+      workspaceId: 'workspace-1',
+      sessionId: 'session-1',
+      expectedDirectionRevision: 4,
+      clientOperationId: 'operation-chat-1',
+      input: { kind: 'chat', message: '画一只会做饭的机器人' },
+    })).rejects.toMatchObject({
+      status: 401,
+      code: 'AUTH_EXPIRED',
+      commandOutcome: 'unknown',
+    } satisfies Partial<DesignWorkspaceModuleError>);
+  });
+
   it('resumes the V2 event stream from the supplied sequence and normalizes deltas', async () => {
     const socket = createSocket();
     let streamUrl = '';