Create, validate, and remediate Orchestra pipeline definitions, as YAML or OML. Use when asked to build a new pipeline, add tasks to an existing pipeline, fix pipeline validation errors, or author Orchestra workflow definitions from a description. Trigger on phrases like "create a pipeline", "add a dbt task", "write orchestra yaml", "write orchestra oml", "fix validate errors", or when editing `.yml`, `.yaml` or `.oml` files under orchestra/ or similar pipeline directories.