What problem does it solve? Long-running software projects lose context between agent sessions, causing repeated work, skipped reviews, and unfinished milestones. This Skill produces durable design and implementation plan documents so any fresh session can resume work without reconstructing decisions from chat history. ## Core Features & Use Cases - Design-first workflow: Writes or amends an authoritative design document with requirements, architecture, and acceptance criteria, then pauses for explicit user approval before planning. - Milestone-based implementation plan: Derives session-sized milestones with dependencies, acceptance criteria, verification commands, review methods, and evidence files, plus a final system-wide verification gate. - Enforced execution gates: Requires tests, an artifact-producing review, and a checkpoint commit before any milestone is marked complete, and writes a structured handoff for the next session. - Use Case: Ask the agent to plan a multi-week feature; it writes docs/design.md, gets your approval, derives docs/implementation-plan.md with milestones M1-M5, then executes one milestone per session with recorded evidence. ## Quick Start Ask the agent to turn this feature idea into a design document and milestone-based implementation plan for the project.
