PostgreSQL API SSH MCP Server

[LEGEND] ORCHESTRATION = The contract for multi-step workflows and execution semantics. [CONTENT] Contract: Orchestration v1 ## Purpose Define [ORCHESTRATION]: multi-step workflow execution semantics (including rollback and retries). ## Scope - In scope: step model, state transitions, retries/timeouts, rollback semantics. - Out of scope: concrete worker/runtime implementation. ## Interface TODO: define workflow and step schemas. ## Errors TODO: define orchestration failures (timeout, non-retryable, rollback-failed). ## Examples ```json {"workflow":"publish_release","steps":[{"id":"build","retry":2},{"id":"deploy","timeout_s":600}]} ```