test: add actual flutter test for mobile

Author: gracefullight

apps/api/src/lib/rate_limit.py

@@ -79,7 +79,7 @@ class RedisRateLimiter:
     def __init__(self, requests: int, window: int):
         self.requests = requests
         self.window = window
-        self._redis: "redis_module.Redis | None" = None
+        self._redis: redis_module.Redis | None = None
 
     async def _get_redis(self) -> "redis_module.Redis":
         """Lazy Redis connection."""

apps/mobile/test/dummy_test.dart

@@ -1 +1,7 @@
-void main() {}
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('dummy test', () {
+    expect(true, isTrue);
+  });
+}

apps/worker/src/lib/retry.py

@@ -1,4 +1,5 @@
 from collections.abc import Callable
+
 from tenacity import (
     retry,
     retry_if_exception_type,