fix(desktop): mock electron in tests that transitively import it

url-guard, csp, and telemetry-policy all reach electron through
@/main/navigation but never mocked it, so they depend on a working
Electron binary download and fail when that install is incomplete.

Author: waleedlatif1

apps/desktop/src/main/browser-agent/url-guard.test.ts

@@ -1,5 +1,8 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 
+// url-guard pulls in @/main/navigation, which imports electron.
+vi.mock('electron', () => import('@/test/electron-mock'))
+
 const { mockLookup } = vi.hoisted(() => ({ mockLookup: vi.fn() }))
 
 // The real resolveHostAddresses runs; only the resolver under it is mocked, so

apps/desktop/src/main/csp.test.ts

@@ -1,4 +1,8 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+// csp pulls in @/main/navigation, which imports electron.
+vi.mock('electron', () => import('@/test/electron-mock'))
+
 import { attachCspFallback, DEFAULT_DESKTOP_CSP } from '@/main/csp'
 
 type HeadersReceivedHandler = (

apps/desktop/src/main/telemetry-policy.test.ts

@@ -1,4 +1,8 @@
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
+
+// telemetry-policy pulls in @/main/navigation, which imports electron.
+vi.mock('electron', () => import('@/test/electron-mock'))
+
 import { shouldBlockRequest } from '@/main/telemetry-policy'
 
 describe('shouldBlockRequest', () => {