What problem does it solve? Complex feature work often loses context between sessions and models: plans get stale, decisions are forgotten, and a new agent cannot pick up where the last one stopped. This Skill manages ExecPlans — self-contained living Markdown documents in docs/plans/ that carry everything a novice or coding agent needs to implement a change end-to-end, including progress tracking, decision logs, and provenance of which model wrote or reviewed the plan. ## Core Features & Use Cases - Plan lifecycle modes: create, implement, discuss, review, update, and status modes cover the full lifecycle of an execution plan, from initial research through completion and ADR distillation. - Scripted scaffolding and provenance: bundled Bun/TypeScript scripts (init-plan.ts, record-provenance.ts) generate numbered plan files with YAML frontmatter and append tamper-safe authorship and review entries, with runtime model discovery for Codex and Claude Code sessions. - ADR integration: a shared workflow discovers, cites, creates, and validates Architecture Decision Records, distilling durable project decisions out of completed plans. - Use Case: Ask the agent to plan a new feature; it researches the repository, generates docs/plans/4-add-queue-support.md with milestones and observable acceptance criteria, then implements it milestone by milestone while keeping progress, decisions, and git trailers in sync. ## Quick Start Ask the agent to create an execution plan for the feature you want to build, for example: create an ExecPlan for adding a health-check endpoint to the server.