Add voice search to our website catalog

Our online catalog currently only supports typed search, and visitors keep telling us this is inconvenient on mobile, especially while driving or holding items in their hands. We want to add a voice search option so customers can simply say the name of a product instead of typing it, with the recognized text automatically triggering the same search a typed query would.

The feature should work directly in the browser without installing anything, using microphone permission and built-in speech recognition where available, with a clear fallback where it isn't. A visible microphone icon, an obvious listening indicator, and quick, accurate speech-to-text conversion all matter for how it feels to use. Recognized queries should go through the same spelling tolerance and synonym matching our regular search already uses, so an imperfect transcription still finds the right products.

Error states — no microphone access, no speech detected, unsupported browser — need friendly on-screen messages instead of silent failures, and results should load without a full page reload.

Scope of work:
— voice input button in the existing search bar
— speech-to-text feeding the current search backend
— support for at least two interface languages
— graceful fallback for unsupported browsers
— testing on major mobile browsers