fix: resolve TypeScript compilation errors for build

- Added pinia dependency (was missing from package.json)
- Relocated useMeta.ts from incorrect nested path to correct location
- Renamed route-meta.d.ts to route-meta.ts for module augmentation + exports
- Fixed RouteMeta imports to use vue-router (augmented interface)
- Added isMetaFunction type guard for callable type narrowing
- Simplified OG/twitter tags to static strings (crawlers don't send locale headers)
- Exported MetaConfig from useI18nMeta.ts
- Added robots property to I18nMetaConfig
- Fixed union type property access in drupal-meta.ts with Array.isArray guard
- Fixed definePage import source (unplugin-vue-router/runtime)
- Removed Twitter-specific meta tags (fall back to OG)

apps/vdn-static/package.json

@@ -17,6 +17,7 @@
 		"arktype": "^2.1.29",
 		"axios": "^1.11.0",
 		"bulma": "^1.0.4",
+		"pinia": "^3.0.4",
 		"tailwindcss": "^4.1.6",
 		"vue-i18n": "^11.1.3",
 		"vue-router": "^5.0.4"