feat : page /books et section livres accueil (v1.6.26)

- #99 : page publique /books — catalogue des books avec ≥1 article publié
- #100 : section « Livres » sur la homepage (max 6, après redécouvertes)
- CSS : .book-grid, .book-home-card*, .home-section-more
- .htaccess : règle RewriteRule ^books/?$

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

templates/post_list.php

@@ -214,6 +214,38 @@ function _renderCard(array $post, array $privateCats, array $allCats, \Parsedown
 </section>
 <?php endif; ?>
 
+<?php if (!empty($homeBooks ?? [])): ?>
+<section class="home-section">
+    <h2 class="home-section-title">
+        Livres
+        <a href="/books" class="home-section-more">Voir tous →</a>
+    </h2>
+    <div class="book-grid">
+    <?php foreach ($homeBooks as $_hb):
+        $_book  = $_hb['book'];
+        $_first = $_hb['first'];
+        $_count = $_hb['count'];
+        $_cover = $_first['cover'] ?? '';
+        $_cat   = trim($_first['category'] ?? '');
+        $_coverStyle = $_cover !== ''
+            ? "background-image:url('/file?uuid=" . rawurlencode($_first['uuid']) . "&name=" . rawurlencode($_cover) . "')"
+            : 'background:' . coverGradient($_cat !== '' ? $_cat : $_first['uuid'], $allCats ?? []);
+    ?>
+    <a href="/book/<?= rawurlencode($_book['slug']) ?>" class="book-home-card">
+        <div class="book-home-card-cover" style="<?= $_coverStyle ?>"></div>
+        <div class="book-home-card-body">
+            <div class="book-home-card-title"><?= htmlspecialchars($_book['title']) ?></div>
+            <?php if (!empty($_book['description'])): ?>
+            <div class="book-home-card-desc"><?= htmlspecialchars(mb_strimwidth($_book['description'], 0, 80, '…')) ?></div>
+            <?php endif; ?>
+            <div class="book-home-card-meta"><?= $_count ?> page<?= $_count > 1 ? 's' : '' ?></div>
+        </div>
+    </a>
+    <?php endforeach; ?>
+    </div>
+</section>
+<?php endif; ?>
+
 <?php else: /* ─── VUE PAGINÉE / FILTRÉE ─────────────────────────────── */ ?>
 
 <?php if ($cursor === '' && $filterCat === ''): ?>