What problem does it solve? Writing implementation plans without understanding the existing codebase leads to missed constraints, scope creep, and rework. This Skill structures the planning process so every plan is grounded in actual code, verified research, and explicit user alignment before implementation begins. ## Core Features & Use Cases - Codebase-Grounded Research: Spawns parallel research agents to locate relevant files, analyze current implementations, and find existing patterns before proposing any design. - Iterative Plan Development: Moves through context gathering, research, outline feedback, and detailed writing phases, pausing for user confirmation at each stage. - Phased Plan Documents: Writes timestamped plans to _scratchpad/plans/ with per-phase changes, code snippets, and separated automated versus manual verification criteria. - Use Case: You receive a ticket to add authentication to an API. The Skill reads the ticket, researches the existing middleware and routing code, presents design options with trade-offs, then writes a phased plan with testable success criteria for each phase. ## Quick Start Ask the agent to create an implementation plan for your feature or ticket, for example: plan the implementation of the password reset feature described in this ticket.
