feat(router): mount pages-v2 at /v2/* with v2- name prefix

Adds a second routesFolder (src/pages-v2 -> /v2/) and extends
getRouteName so v2 routes get a v2- NAME prefix, preventing collisions
with same-named v1 pages. getPascalCaseRouteName already folds the v2/
URL segment into the base name, so the leading v2- is stripped before
v2RouteName re-adds the canonical prefix (avoids v2-v2-dashboard).
Includes the regenerated typed-router.d.ts and a boot-proof
pages-v2/dashboard.vue placeholder.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/app/vite.config.ts

@@ -14,6 +14,7 @@ import MetaLayouts from 'vite-plugin-vue-meta-layouts'
 import vuetify from 'vite-plugin-vuetify'
 import tailwindcss from '@tailwindcss/vite'
 import svgLoader from 'vite-svg-loader'
+import { v2RouteName } from './src/plugins/1.router/v2RouteName'
 
 // https://vitejs.dev/config/
 export default defineConfig({
@@ -21,11 +22,42 @@ export default defineConfig({
     // Docs: https://github.com/posva/unplugin-vue-router
     // ℹ️ This plugin should be placed before vue plugin
     VueRouter({
+      // Parallel /v2/* tree (RFC-WS-GUI-REDESIGN AD-G1). The second
+      // routesFolder prefixes every v2 URL with /v2/; v2RouteName then
+      // prefixes the route NAME with `v2-` so file-name twins across
+      // pages/ and pages-v2/ cannot collide. Reverted at final cutover.
+      routesFolder: [
+        { src: 'src/pages' },
+        { src: 'src/pages-v2', path: 'v2/' },
+      ],
       getRouteName: routeNode => {
         // Convert pascal case to kebab case
-        return getPascalCaseRouteName(routeNode)
+        const raw = getPascalCaseRouteName(routeNode)
           .replace(/([a-z\d])([A-Z])/g, '$1-$2')
           .toLowerCase()
+
+        // Defensive path read: unplugin-vue-router 0.8.8 TreeNode exposes
+        // `.fullPath`; fall back to `.value.path` then '' so a future
+        // plugin bump can't silently drop the v2- prefix. Step 5 below
+        // empirically verifies the emitted name.
+        const nodePath
+          = (routeNode.fullPath
+            ?? routeNode.value?.path
+            ?? '') as string
+
+        // getPascalCaseRouteName includes the 'v2' segment from the URL
+        // path prefix set by routesFolder (e.g. 'v2/dashboard' → 'v2-dashboard').
+        // Strip that prefix before v2RouteName re-adds the canonical `v2-`
+        // so we get 'v2-dashboard' not 'v2-v2-dashboard'.
+        const isV2
+          = nodePath === '/v2'
+          || nodePath === 'v2'
+          || nodePath.startsWith('/v2/')
+          || nodePath.startsWith('v2/')
+
+        const base = isV2 && raw.startsWith('v2-') ? raw.slice(3) : raw
+
+        return v2RouteName(base, nodePath)
       },
     }),
     vue(),