Draw the mockup with the screens' own words, compile every text while building, and send the language with the live updates

- The page takes the screens' words its mockup draws from their own texts: screen.ha (Home Assistant's words, filled
  from Home Assistant), screen.time, screen.date, screen.number and screen.tile.page, per language next to _meta and
  editor. The copies under editor.mockup go; the rest of `screen` and all of `addon` stay out of the build.
- Numbers in the mockup follow the screens' language (screen.number, with its minimum grouping) or the chosen style,
  as the firmware writes them.
- @intlify/unplugin-vue-i18n compiles every text at build time, so the page runs vue-i18n's runtime-only build
  without the message compiler; every language's _meta comes with the page. Empty texts stay out while building.
- The live updates carry the editor's language (api/events?language=), as an EventSource sends no headers.
- web/ needs Node 22.13 or newer: vue-i18n 11.4, Vite 7 and the unplugin ask for it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

web/package.json

@@ -4,7 +4,7 @@
   "version": "0.0.0",
   "type": "module",
   "devEngines": {
-    "runtime": { "name": "node", "version": "^20.19.0 || >=22.12.0", "onFail": "error" }
+    "runtime": { "name": "node", "version": ">=22.13.0", "onFail": "error" }
   },
   "scripts": {
     "dev": "vite",
@@ -19,6 +19,7 @@
     "vue-i18n": "^11.4.12"
   },
   "devDependencies": {
+    "@intlify/unplugin-vue-i18n": "^11.2.5",
     "@vitejs/plugin-vue": "^6.0.1",
     "@vue/test-utils": "^2.5.1",
     "jsdom": "^26.1.0",