What problem does it solve? Multi-step implementations often lose track of progress, decisions, and the research behind them. This Skill enforces a consistent markdown plan format with YAML frontmatter, phase status markers, and citations so plans stay accurate and auditable across sessions. ## Core Features & Use Cases - Standardized Plan Format: Defines an exact markdown template with frontmatter (status, phase, updated), a Goal section, a Context & Decisions table, and hierarchically numbered tasks. - State Machine Rules: Enforces lifecycle rules so only one phase is IN PROGRESS and only one task carries the CURRENT marker at any time. - Research Citations: Links architectural decisions and tasks to delegation research via ref:delegation-id references, with validation against fabricated citations. - Use Case: When starting a JWT authentication feature, create a plan that cites prior auth research, tracks phases from research through testing, and keeps exactly one current task marked as work progresses. ## Quick Start Ask the agent to create an implementation plan for your multi-step feature using the plan protocol format with phases, citations, and a current task marker.