instantsearch

Port or introduce an InstantSearch widget or connector-driven feature across this monorepo's JavaScript, React, and Vue flavors. Use when the task is to add a missing wrapper around an existing connector, bring a widget from one flavor to another, or implement a new shared widget end-to-end in `instantsearch.js`, `react-instantsearch`, and `vue-instantsearch`. Triggers include requests like "port X to vue", "add Y to react-instantsearch", "make Z available in all flavors", or "implement the missing InstantSearch wrapper for this connector".