Interpret and apply a `patch.md` file — the open markdown format for declarative, AI-native code transformations. Handles both source-tree patches (RFC 0001) and overlay / runtime-injection patches (RFC 0002, for userscripts, browser extensions, service workers, CDN edge, game mods, and any other host the author doesn't own). Use this skill whenever the user asks you to apply, run, execute, or "use" a patch.md file; whenever the user points you at a file named `*.patch.md` or `patch.md`; whenever a file they share opens with a `# patch.md` heading and contains sections like `## files`, `## overlay`, `## verify`, or `## meta`; whenever the user describes wanting to apply a packaged code transformation, codemod-like change, shareable integration recipe, userscript, userstyle, runtime injection, or behavioral overlay to a host they use but don't own. Even if the user does not name the format explicitly, trigger this skill as soon as you recognize the convention.
2026-04-21