refactor: rename 'recit' to 'narrative' for English code naming

- Rename store: recit.js → narrative.js (useRecitStore → useNarrativeStore)
- Rename templates: recit.php/json.php → narrative.php/json.php
- Rename blueprint: recit.yml → narrative.yml
- Update all imports and references in Vue/JS files
- Update PHP template references and data attributes
- Update CLAUDE.md documentation
- Create comprehensive README.md with English-French dictionary

The dictionary section maps English code terms to French content terms
for easier navigation between codebase and CMS content.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/site/templates/narrative.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Template to display a narrative
+ * This template is required for narrative.json.php to work
+ */
+?>
+<?php snippet('header') ?>
+
+<article class="narrative">
+  <h1><?= $page->title() ?></h1>
+
+  <?php if ($page->author()->isNotEmpty()): ?>
+    <p class="author"><?= $page->author() ?></p>
+  <?php endif ?>
+
+  <?php if ($page->cover()->isNotEmpty()): ?>
+    <figure class="cover">
+      <?php if ($cover = $page->cover()->toFile()): ?>
+        <img src="<?= $cover->url() ?>" alt="">
+      <?php endif ?>
+    </figure>
+  <?php endif ?>
+
+  <?php if ($page->introduction()->isNotEmpty()): ?>
+    <div class="introduction">
+      <?= $page->introduction() ?>
+    </div>
+  <?php endif ?>
+
+  <p><a href="<?= $page->url() ?>/print">Open print editor</a></p>
+</article>
+
+<?php snippet('footer') ?>