test(ui): register $ver global in vitest setup

Component tests mounted without main.ts's bootstrap, so the $ver global
template helper (app.config.globalProperties.$ver = displayVersion) was
undefined — AppSidebar/AppHeroSection/MarketplaceAppCard tests failed with
"_ctx.$ver is not a function", blocking the release gate's ui-unit-tests
stage. Add a vitest setup file that mirrors main.ts via config.global.mocks
and wire it into vitest.config.ts.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

neode-ui/vitest.config.ts

@@ -12,6 +12,7 @@ export default defineConfig({
   test: {
     environment: 'jsdom',
     globals: true,
+    setupFiles: ['./vitest.setup.ts'],
     root: '.',
     passWithNoTests: true,
     exclude: ['e2e/**', 'node_modules/**', '**/._*'],

neode-ui/vitest.setup.ts

@@ -0,0 +1,9 @@
+import { config } from '@vue/test-utils'
+import { displayVersion } from '@/utils/version'
+
+// The app registers `$ver` as a global template property in main.ts
+// (app.config.globalProperties.$ver = displayVersion). Component tests mount
+// without that bootstrap, so provide the same global here for every mounted
+// component. Per-mount `global` options merge with this, so individual tests
+// keep their own plugins/mocks.
+config.global.mocks = { ...(config.global.mocks ?? {}), $ver: displayVersion }