fix(test): expose Node's Web Crypto API to jsdom

jsdom doesn't include crypto.subtle by default, causing encryption
tests to fail in CI. Import webcrypto from node:crypto and expose
it globally when not available.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: msujaws

tests/setup.ts

@@ -2,6 +2,13 @@ import { afterEach, beforeAll, afterAll } from 'vitest'
 import { cleanup } from '@testing-library/react'
 import '@testing-library/jest-dom'
 import { server } from './mocks/server'
+import { webcrypto } from 'node:crypto'
+
+// Expose Node's Web Crypto API to jsdom (needed for ApiKeyStorage encryption)
+// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition -- crypto.subtle may be undefined in CI's jsdom
+if (!globalThis.crypto?.subtle) {
+  globalThis.crypto = webcrypto as Crypto
+}
 
 // Start MSW server before all tests
 beforeAll(() => {