fix: register ViteBundle, add config, share vendor volume with node, add vite-plugin-symfony

- Add PentatrionViteBundle to bundles.php (Flex recipe didn't auto-register)
- Create pentatrion_vite.yaml config
- Share vendor named volume with node container (needed for file: npm deps)
- Add vite-plugin-symfony to package.json devDependencies

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config/bundles.php

@@ -14,4 +14,5 @@ return [
     Symfony\Bundle\MonologBundle\MonologBundle::class => ['all' => true],
     Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
     Symfony\UX\React\ReactBundle::class => ['all' => true],
+    Pentatrion\ViteBundle\PentatrionViteBundle::class => ['all' => true],
 ];

config/packages/pentatrion_vite.yaml

@@ -0,0 +1,5 @@
+pentatrion_vite:
+    default_build: app
+    builds:
+        app:
+            build_directory: build