What problem does it solve? Turning a product roadmap into consistent, verifiable agent-driven development work is hard: agents lose track of progress between sessions, skip validation, and drift from the plan. This Skill installs a project-local control plane that compiles a ROADMAP.md into dependency-ordered phases and units, each backed by a validator, and drives execution one bounded batch at a time. ## Core Features & Use Cases - Roadmap compilation: Parses ROADMAP.md headings into a phase-graph.json skeleton, then guides the agent to refine phases, units, dependencies, and validation gates. - Seven workspace commands: create, invoke, update, state, sync, clear, and inject-issues cover the full harness lifecycle in both Cursor and Claude Code. - Validator-backed execution: Every unit requires acceptance criteria and a validation method; a stop hook keeps the agent iterating until goals are verified or blockers appear. - Optional parallel execution: Units marked parallel_safe with disjoint touches_paths can fan out into git worktrees with scope-checked merges. - Use Case: Point the agent at a new repo, say "create development harness", answer the setup questions, and the workspace gains a persistent execution plan you can resume any time with "/invoke-development-harness". ## Quick Start Ask the agent to create a development harness for this repository and then invoke it to start executing the first unit of work.