test(ci): fix timestamp and whisper regressions

packages/core-agent/src/runtime/chat-orchestrator-runtime.test.ts

@@ -238,7 +238,7 @@ describe('createChatOrchestratorRuntime', () => {
 
   it('keeps timestamp prefixes stable for legacy user messages without createdAt', async () => {
     const harness = createHarness()
-    const legacyUserMessage = {
+    const legacyUserMessage: ChatHistoryItem = {
       role: 'user' as const,
       content: 'legacy prompt',
       id: 'legacy-user',

packages/stage-ui/src/libs/inference/adapters/whisper.test.ts

@@ -49,11 +49,16 @@ vi.mock('../coordinator', () => ({
   MODEL_VRAM_ESTIMATES: {},
 }))
 
-vi.mock('@proj-airi/stage-shared', () => ({
-  defaultPerfTracer: {
-    withMeasure: vi.fn((_category: string, _name: string, fn: () => unknown) => fn()),
-  },
-}))
+vi.mock('@proj-airi/stage-shared', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('@proj-airi/stage-shared')>()
+
+  return {
+    ...actual,
+    defaultPerfTracer: {
+      withMeasure: vi.fn((_category: string, _name: string, fn: () => unknown) => fn()),
+    },
+  }
+})
 
 describe('whisper adapter worker failure handling', () => {
   beforeEach(() => {