fix false missing Hermes CLI detection after deployment

tests/client/cli-status.test.ts

@@ -0,0 +1,34 @@
+// @vitest-environment jsdom
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+const request = vi.hoisted(() => vi.fn())
+vi.mock('@/api/client', () => ({ request }))
+
+beforeEach(() => { vi.resetModules(); request.mockReset() })
+
+describe('CLI installation guard', () => {
+  it('does not send a slow, installed CLI to the installation page', async () => {
+    request.mockResolvedValue({ available: false, reason: 'timeout' })
+    const api = await import('@/api/hermes/system')
+    expect(await api.checkHermesCliAvailable()).toBe(true)
+    expect(await api.getHermesCliStatus()).toMatchObject({ reason: 'timeout' })
+    expect(request).toHaveBeenCalledOnce()
+  })
+
+  it.each(['missing', 'permission_denied', 'failed'])('retains a genuine %s error and bypasses server cache on retry', async reason => {
+    request.mockResolvedValueOnce({ available: false, reason }).mockResolvedValueOnce({ available: true, reason: 'ready' })
+    const api = await import('@/api/hermes/system')
+    expect(await api.checkHermesCliAvailable()).toBe(false)
+    api.resetHermesCliProbe()
+    expect(await api.checkHermesCliAvailable()).toBe(true)
+    expect(request).toHaveBeenLastCalledWith('/api/hermes/cli-status?refresh=1')
+  })
+
+  it('continues to work with older servers and transport errors', async () => {
+    const api = await import('@/api/hermes/system')
+    request.mockResolvedValueOnce({ available: false })
+    expect(await api.checkHermesCliAvailable()).toBe(false)
+    api.resetHermesCliProbe()
+    request.mockRejectedValueOnce(new Error('server restarting'))
+    expect(await api.checkHermesCliAvailable()).toBe(true)
+  })
+})