- Drop the module-level paragraph emphasizing the single-UID security
boundary (#issuecomment-5010): redundant given the safe environment.
- Move `podman` from each agent image (claude, codex, pi) into the
`build_image` derived layer so bottles without `nested_containers`
pay no image-size cost (#issuecomment-5013).
- Update `build_image` docstring and inline comments to reflect the move.
- Add TODO(#394) noting the planned docker-layer abstraction refactor.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Dockerfile.claude and Dockerfile.codex move from the repo root into
bot_bottle/contrib/claude/Dockerfile and bot_bottle/contrib/codex/Dockerfile
respectively, so all per-provider assets live alongside the provider code.
Closes#215