What problem does it solve? Turning a feature idea into an actionable implementation plan requires codebase exploration, task breakdown, and coordination of git branches — this Skill automates that entire planning workflow. ## Core Features & Use Cases - Two planning modes: Fast mode produces a quick single plan file, while Full mode generates a richer plan with preference questions, optional git branch or worktree creation, and commit checkpoints. - Codebase-aware task generation: Launches parallel Explore subagents to map affected modules, existing patterns, and integration points before creating ordered tasks with dependencies and logging requirements. - Handoff and roadmap integration: Syncs plan status with a Handoff task system via MCP tools and links plans to roadmap milestones when a roadmap artifact exists. - Use Case: A developer says "plan full Add user authentication with OAuth" and receives a branch-scoped plan file with phased tasks, commit checkpoints, and settings ready for implementation. ## Quick Start Ask the assistant to plan a new feature, for example by saying "plan full add Stripe checkout with webhook handling".