What problem does it solve? Resolving Copilot review comments across a stack of dependent GitHub PRs is error-prone: fixes in lower PRs must propagate upward, parallel work risks file conflicts, and per-PR fixes can drift from the stack's overall intent. This Skill coordinates the whole stack so review-driven changes stay consistent across layers. ## Core Features & Use Cases - Stack discovery and intent capture: Uses the gh stack extension to map PR dependencies, records each PR's role, and builds a file-overlap map to plan safe parallelism. - Wave-based parallel sub-agents: Fans out Sonnet or Opus agents per PR based on diff size, comment complexity, and stack position, with each agent running /github-resolve in an isolated git worktree. - Cascade propagation and stack review: Rebases upper PRs onto lower-PR fixes with gh stack rebase, re-runs CI gates on rebased heads, and performs a final whole-stack intent, layering, and consistency review. - Use Case: You have a four-PR stack (schema, repository, API, UI) with Copilot comments on each. The Skill discovers the stack, resolves comments bottom-up with parallel agents where files don't overlap, propagates fixes upward, and reports one consolidated summary. ## Quick Start Ask the agent to run the github-resolve-stack skill on the current PR's stack to resolve all Copilot review comments across every PR in the stack.