What problem does it solve? Writing implementation plans without sufficient codebase research or requirement clarification leads to costly rework and missed edge cases. This Skill guides an interactive, iterative planning process that grounds every plan in verified codebase facts and explicit user decisions. ## Core Features & Use Cases - Adaptive Questioning: Scales the number and focus of clarifying questions based on task complexity (LOW/MEDIUM/HIGH) and upstream artifacts like frame briefs and research docs, avoiding redundant questions. - Research-Driven Planning: Spawns parallel exploration agents to map relevant files, patterns, and prior decisions before writing, with file:line references embedded in the plan. - Structured Plan Output: Produces a phased plan.md with automated and manual success criteria, a plan-brief.md two-pager summary, and a machine-readable Progress section for execution tracking. - Use Case: A developer receives a ticket to add OAuth login. They invoke the skill with the change ID, answer a round of scoped questions about session handling and error states, and receive a phased implementation plan with verification steps ready for execution. ## Quick Start Ask the AI to create a detailed implementation plan for your task or ticket, optionally passing a change ID or path to an existing research or frame document.