Fix 4 bugs that prevent the ARQ worker from booting with a
Qdrant instance that has an API key set:
1. reflection.py: add missing 'import os' (NameError crash at
COLLECTION_NAME = os.environ.get(...))
2. local_qdrant.py: read QDRANT_API_KEY from environment
3. local_qdrant.py: pass api_key= to AsyncQdrantClient and set
https=False to prevent SSL error when API key triggers
auto-HTTPS against a local HTTP Qdrant instance
4. docker-compose.yml: pass QDRANT_API_KEY env var to the
worker service so the key is available inside the container