annotate-inject

Install and verify browser annotation in an existing/user-provided boilerplate (Next.js, Nuxt, Astro, Vite, or port) after the user explicitly requests it or confirms the proposed non-trivial codebase change. Bundled Product Design templates already include annotation. The agent starts/reuses the dev server, verifies toggle + POST + inbox write, keeps it running, and returns the URL; never delegate startup commands to the user.