chore(backend): upgrade deps and remove redis/rq

backend/app/workers/queue.py

@@ -1,18 +0,0 @@
-"""RQ queue and Redis connection helpers for background workers."""
-
-from __future__ import annotations
-
-from redis import Redis
-from rq import Queue
-
-from app.core.config import settings
-
-
-def get_redis() -> Redis:
-    """Create a Redis client from configured settings."""
-    return Redis.from_url(settings.redis_url)
-
-
-def get_queue(name: str) -> Queue:
-    """Return an RQ queue bound to the configured Redis connection."""
-    return Queue(name, connection=get_redis())