What problem does it solve? Teams with existing codebases often lack a coherent test strategy, and ad-hoc test writing misses the risks that actually matter. This Skill writes a phased test-rollout plan grounded in PRDs, git hot-spot churn, and a structured user interview, then drives each rollout phase through a research, plan, and implement chain while tracking state on disk. ## Core Features & Use Cases - Stateful rollout orchestration: Writes context/foundation/test-plan.md with a fixed schema, then re-derives progress on every invocation by checking which artifacts exist, resuming from the next pending phase. - Evidence-based risk mapping: Combines PRD lines, a five-question user interview, a 30-day git hot-spot scan, and a test-base profile into an impact-by-likelihood risk map with response guidance for each risk. - Downstream handoffs: Launches each rollout phase into /10x-new, /10x-research, /10x-plan, and /10x-implement, updating the plan's status table as artifacts appear. - Use Case: A team with a shipped product and sparse tests runs the skill, answers five interview questions about what scares them, and receives a 3-5 phase rollout plan that sequences critical-path coverage, hot-spot integration tests, and CI quality gates. ## Quick Start Run /10x-test-plan in a project that already has a PRD or roadmap to generate a phased test rollout plan and begin the first phase.