Use when creating or editing a Makefile that orchestrates long-running local services (dev servers, preview servers, build+serve workflows). Also use when user says "make a Makefile", "service orchestration", "standard targets", "make start/stop/restart", "Makefile convention", "make serve", "dev server Makefile", or when structuring a project with .env.local profiles and start/stop lifecycle. Defines canonical target names, namespacing with `/`, help-as-default-goal with ANSI colors, integration with .env.local, and PROFILE/APP variable patterns.
