A real template — *for/*if actually rendering, not just described in the docs — backed by a shared NotesService (the same Pure DI pattern as the Home page's counter and the Dogs page). Adding a note also makes a real Http.Post to jsonplaceholder.typicode.com, a well-known public fake REST API for prototyping: it validates and echoes back whatever you send, but doesn't actually persist it — which is exactly what makes it safe to call for real from here.