fix docker compose config and add full-stack test recipe
- rename docker-compose.yml to compose.yml
- add PREFECT_SERVER_API_HOST=0.0.0.0 for container networking
- fix env var names to match code (PREFECT_DATABASE_URL, PREFECT_REDIS_MESSAGING_HOST)
- add docker-full-test recipe for testing postgres + redis stack
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>