What problem does it solve? Writing implementation plans without understanding the actual codebase leads to vague specs, missed edge cases, and scope creep. This Skill guides an AI through a structured, research-driven planning process that grounds every decision in real code before writing anything down. ## Core Features & Use Cases - Codebase-Grounded Research: Spawns parallel research agents (codebase-locator, codebase-analyzer, codebase-pattern-finder) to find relevant files, trace data flow, and return file:line references before planning begins. - Iterative Plan Development: Builds plans in stages—context gathering, research, outline approval, detailed writing, and review—so users can course-correct at each step. - Structured Plan Template: Produces plans with phases, specific file changes, code snippets, and success criteria split into automated verification (test commands, type checks) and manual verification (UI checks, edge cases). - Use Case: A developer receives a ticket to add session management to an API. The Skill reads the ticket and related code, researches existing auth patterns, presents design options, then writes a phased plan with exact files to modify and commands to verify each phase. ## Quick Start Ask the AI to create an implementation plan for your ticket or feature description, providing any relevant file paths or issue references.