fix module name

user_manager.py

@@ -0,0 +1,20 @@
+from models import UserState
+from redis_client import redis
+
+class UserManager:
+    def __init__(self):
+        self.users = {}
+
+    def get_user(self, user_id):
+        if user_id not in self.users:
+            self.users[user_id] = UserState()
+        return self.users[user_id]
+
+    async def increment_pomodoros(self, user_id):
+        await redis.incr(f"user:{user_id}:pomodoros")
+
+    async def get_pomodoros(self, user_id):
+        val = await redis.get(f"user:{user_id}:pomodoros")
+        return int(val) if val else 0
+
+user_manager = UserManager()