feat: integrate Kirby CMS data with Vue print editor

- Add JSON content representation template (recit.json.php)
- Create virtual /print page plugin for recit pages
- Add recit.php base template for content representation
- Create Pinia store for recit data management
- Add block components (text, heading, image, list, quote, video, map)
- Update PagedJsWrapper for dynamic content rendering with data-page-type
- Modify header.php to pass recit JSON URL via data attribute
- Update App.vue to load recit data on mount

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

public/site/templates/print.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Template pour l'éditeur d'impression Vue.js
+ * Route: /projet/recit/print
+ *
+ * Ce template charge l'app Vue et lui passe l'URL JSON du récit parent
+ */
+
+// Récupérer le récit parent
+$recit = $page->parent();
+
+// Construire l'URL JSON du récit
+$recitJsonUrl = $recit->url() . '.json';
+?>
+<?php snippet('header', ['recitJsonUrl' => $recitJsonUrl]) ?>
+
+<?php snippet('footer') ?>