- Replace named volume (agent_data) with bind mounts for /opt/letsbe/{env,stacks,nginx}
- Update ALLOWED_FILE_ROOT default from /opt/agent_data to /opt/letsbe
- Add startup validation that warns (but doesn't block) if host dirs missing
This fixes ENV_UPDATE writes going to container filesystem instead of host,
and DOCKER_RELOAD failing with "File does not exist" errors.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Matt