What problem does it solve? Solo developers lose project context between work sessions, forcing them to manually reconstruct what was done, what decisions are pending, and what to do next. This Skill standardizes session startup, checkpointing, and shutdown so progress, decisions, and TODOs persist across sessions. ## Core Features & Use Cases - 5-Step Session Start Protocol: Reads CLAUDE.md, loads the latest session log, checks pending decisions in decision_log.md, reviews team_plan.md, and reports a proposed plan to the PM for approval. - 6-Step Session End Protocol: Writes a structured session log, updates the decision log, syncs CLAUDE.md sections, recalculates phase progress, and delivers a final PM report. - Mid-Session Checkpoints: Saves interim progress snapshots so work can resume after interruptions. - Use Case: A solo developer says "세션 종료" at the end of the day; the Skill generates a dated session log with completed tasks, decisions, next-session TODOs, and lessons learned, then updates the project plan. ## Quick Start Ask the assistant to start a new session so it restores context from the latest session log and proposes today's goals.