feat: Implement user profile and parent profile button tests

- Added tests for user profile editing, including name changes, image uploads, and password changes.
- Implemented tests for changing the parent PIN with verification code handling.
- Created tests for account deletion with confirmation dialog and email validation.
- Introduced parent profile button tests for both temporary and permanent modes, verifying badge visibility and menu options.
- Updated Playwright configuration to include new test buckets for user profile and parent profile button scenarios.
- Added e2e plans documentation for user profile and parent profile button tests.

backend/api/user_api.py

@@ -249,3 +249,18 @@ def mark_for_deletion():
     send_event_to_user(user.id, Event(EventType.FORCE_LOGOUT.value, Payload({'reason': 'account_deleted'})))
 
     return jsonify({'success': True}), 200
+
+
+@user_api.route('/user/e2e-get-pin-code', methods=['GET'])
+def e2e_get_pin_code():
+    """Return the current user's pin_setup_code for e2e testing. Never available in production."""
+    import os
+    if os.environ.get('DB_ENV', 'prod') == 'prod':
+        return jsonify({'error': 'Not available in production'}), 403
+    user_id = get_validated_user_id()
+    if not user_id:
+        return jsonify({'error': 'Unauthorized'}), 401
+    user = get_current_user()
+    if not user:
+        return jsonify({'error': 'Unauthorized'}), 401
+    return jsonify({'code': user.pin_setup_code or ''}), 200