Hybrid mode implementation — split reactivity between server and client.
Use via the unified API:
use PhoenixVapor, file: "Contacts.vue"How it works
When a .vue file has ref() in <script setup>, the unified API
(use PhoenixVapor, file: "X.vue") routes here automatically.
Generates render/1, handle_event/3 stubs, and a client JS module.