- build_install_sdk.sh: colcon build output captured; exit 1 on non-zero
exit code or 'FAILED' summary line; stale colcon artifacts cleaned
before each build to prevent cached IndentationError surfacing
- build_install_sdk.sh: prod post-install block creates /var/log/robot
with setgid group (hivecore, chmod 2775) for multi-user node support
- manager.py: fix ManagerConfig docstring indentation (8-space to 4-space)
that caused IndentationError in stale build/install colcon copies
- USER_GUIDE.md FAQ: expand permission troubleshooting with Scenario A
(single-user chown) and Scenario B (3-step setgid group for multi-user)
- Use DEPLOY_MODE=prod for build_install_and_start_manager.sh and build_install_sdk.sh
- Switch health check to check_manager_health_prod.sh
- Note production install path /opt/hivecore/
