Use when implementing a SpecRail-governed issue after the implementation gate. Executes the scoped task plan, keeps changes tied to linked specs and acceptance criteria, runs deterministic verification, and preserves human approval, merge, and security boundaries.

Use when turning an approved SpecRail product and technical spec into the numbered `tasks.md` plan. Creates stable task IDs, owners, done-when conditions, verification commands, dependencies, and handoff notes without implementing the tasks.

Use when triaging a GitHub issue or issue-like request in a SpecRail-governed repository. Handles search-first duplicate checks, issue classification, readiness label proposals, security-private routing, and triage handoffs without bypassing human gates.

Use as the router/startup skill when working in a repository that adopts SpecRail for issue-first, spec-first, AI-assisted development. Routes triage, spec writing, task planning, implementation, PR review, CI diagnosis, PR gates, release notes, and spec-vs-implementation checks to focused SpecRail skills while preserving locale and human-gate boundaries.

Use when writing or updating a SpecRail product spec for a linked issue. Produces the numbered `product.md` spec from the locale-appropriate template, focusing on user-facing behavior, goals, non-goals, and acceptance criteria without implementation detail.

Use when writing or updating a SpecRail technical spec for a linked issue. Produces the numbered `tech.md` spec from the locale-appropriate template, translating accepted product behavior into design, affected files, risks, verification, and rollback without starting implementation.