What problem does it solve? Coordinating a release that spans multiple repositories is error-prone: PRs must open in dependency order, merges must respect upstream changes, and a failed downstream integration can silently break the train. This Skill provides the Gemini CLI entry point to the phase-loop run-train coordinator, which automates that entire cross-repo workflow. ## Core Features & Use Cases - Topo-ordered draft PRs: Opens draft PRs across all train nodes in dependency order after a preflight check, stopping before any PR is opened if preflight fails. - Governed merge phase: With --governed, runs train-level review, then merges upstream nodes first and re-verifies each downstream node against the upstream merged SHA. - Crash-resumable ledger: Inspect state with phase-loop train-status and resume interrupted runs; already-merged nodes are skipped and blocked nodes retried. - Use Case: You maintain five services that must ship together. Define a train roadmap with nodes and dependencies, run the coordinator to open all draft PRs, then pass --governed to review and merge them sequentially with downstream re-verification. ## Quick Start Ask the assistant to run the release train by invoking phase-loop run-train with your train roadmap file, adding the governed flag when you are ready to review and merge.
