chore: stabilize Zhinian pilot delivery

tests/unit/gateway-events.test.ts

@@ -165,4 +165,31 @@ describe('gateway store event wiring', () => {
     expect(chatStateMock.state.activeRunId).toBeNull();
     expect(chatStateMock.state.pendingFinal).toBe(false);
   });
+
+  it('does not clear sending state for terminal notifications from a different active run', async () => {
+    hostApiFetchMock.mockResolvedValueOnce({ state: 'running', port: 18789 });
+
+    const handlers = new Map<string, (payload: unknown) => void>();
+    subscribeHostEventMock.mockImplementation((eventName: string, handler: (payload: unknown) => void) => {
+      handlers.set(eventName, handler);
+      return () => {};
+    });
+
+    const { useGatewayStore } = await import('@/stores/gateway');
+    await useGatewayStore.getState().init();
+
+    handlers.get('gateway:notification')?.({
+      method: 'agent',
+      params: {
+        phase: 'completed',
+        runId: 'stale-run',
+        sessionKey: 'session-1',
+      },
+    });
+
+    await new Promise((resolve) => setTimeout(resolve, 0));
+    expect(chatStateMock.state.sending).toBe(true);
+    expect(chatStateMock.state.activeRunId).toBe('run-1');
+    expect(chatStateMock.state.pendingFinal).toBe(true);
+  });
 });