Phase 5-6: Router, plugins, entry points — scripts-v2 complete

13 files completing the TypeScript migration:
- router/ (3 files): typed guards, route meta augmentation,
  merged feature routes from all 16 modules
- plugins/ (4 files): i18n with dynamic locale loading, pinia,
  tooltip directive
- Entry points: main.ts, InvoiceShelf.ts bootstrap class,
  App.vue, global-components.ts with typed registration
- NoCompanyView and NotFoundView stubs

scripts-v2/ totals: 324 files, 42853 lines of strict TypeScript.
Zero any types. Complete feature-based architecture with typed
stores, API services, composables, and Vue components.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

resources/scripts-v2/features/errors/NotFoundView.vue

@@ -0,0 +1,16 @@
+<template>
+  <div class="flex h-screen items-center justify-center">
+    <div class="text-center">
+      <h1 class="text-6xl font-bold text-gray-300">404</h1>
+      <p class="mt-4 text-lg text-gray-500">
+        {{ $t('errors.page_not_found', 'Page not found') }}
+      </p>
+      <router-link
+        to="/admin/dashboard"
+        class="mt-6 inline-block text-primary-500 hover:text-primary-600"
+      >
+        {{ $t('general.go_to_dashboard', 'Go to Dashboard') }}
+      </router-link>
+    </div>
+  </div>
+</template>