ship-a-feature

Ship a NEW capability to vigiles so it actually reaches a user — a new export, public function, subpath, CLI flag, or hook-vocabulary word. Use when about to add, or having just added, a feature / export / public API to this repo. Runs the executable checks a green npm run check does NOT make — reachable from a public door, API-surface diff READ, a public doc home, the experimental_ decision, a gate on a frozen…