feat(release): add phase10 tests, smoke load script, release checklist, and onboarding simulator flow

Backend/tests/device-token.test.ts

@@ -0,0 +1,24 @@
+import { describe, expect, test } from 'bun:test';
+
+import { createDeviceToken, verifyDeviceToken } from '../utils/device-token';
+
+describe('device token', () => {
+  test('roundtrips valid payload', () => {
+    const token = createDeviceToken({
+      userId: 'user-1',
+      deviceId: 'device-1',
+      role: 'client',
+    }, 60);
+
+    const payload = verifyDeviceToken(token);
+
+    expect(payload).not.toBeNull();
+    expect(payload?.userId).toBe('user-1');
+    expect(payload?.deviceId).toBe('device-1');
+    expect(payload?.role).toBe('client');
+  });
+
+  test('rejects malformed tokens', () => {
+    expect(verifyDeviceToken('bad-token')).toBeNull();
+  });
+});