separate sandbox skill syncing into distinct apply and scan steps
while keeping the legacy combined command for compatibility
improve observability by adding phase-based logs and richer shell
error details that include exit code, stderr, and stdout tail
reuse a shared python-exec command builder to reduce duplication
and keep command generation consistent
When shipyard_neo_access_token is not configured, _discover_bay_credentials()
searches for Bay's credentials.json in:
1. BAY_DATA_DIR env var
2. Mono-repo relative path ../pkgs/bay/
3. Current working directory
Enables zero-config dev mode when Bay runs locally alongside AstrBot.
* feat: support anthropic skills
closes: #4687
* chore: ruff
* feat: implement skills management and selection in persona configuration
* feat: enhance skills management with local environment tools and permissions