Add .dockerignore to exclude __pycache__, .venv, test artifacts, and
other host-only files from Docker build context. Prevents stale .pyc
cache pollution in container images.
Add read-only bind mount for ./apps/api/src:/app/src in docker-compose.yml
so code changes on the host are reflected in the running container
without requiring image rebuild. This is a dev convenience that resolves
the persistent 'tool_configs' import error from stale container images.
Quality gates: docker-compose.yml syntax valid, .dockerignore parsed.
alex
8a0d82f49b