feat : "Meilleures audiences" + admin/stats pages via flux RSS XML (v1.6.6)

- post_list.php : section AJAX qui lit /trending?period=1h en XML (DOMParser) — plus de rendu PHP
- admin_stats.php : colonne "Pages les plus visitées" chargée en AJAX depuis /trending?period=14d XML
- index.php/stats : suppression de topGrouped pour /post/ ; seuls /book/ et ASN restent côté serveur

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

templates/post_list.php

@@ -155,19 +155,57 @@ function _renderCard(array $post, array $privateCats, array $allCats, \Parsedown
 </section>
 <?php endif; ?>
 
-<?php /* ─── Tendances ───────────────────────────────────────────────────── */ ?>
-<?php if (!empty($popularPosts)): ?>
-<section class="home-section">
+<?php /* ─── Meilleures audiences (AJAX — flux RSS XML /trending?period=1h) ── */ ?>
+<section class="home-section" id="home-audiences-section" hidden>
     <h2 class="home-section-title">
         Meilleures audiences <span class="home-section-title-sub">· 1 heure</span>
     </h2>
-    <div class="post-grid">
-        <?php foreach ($popularPosts as $_pp): ?>
-            <?php _renderCard($_pp, $privateCats ?? [], $allCats ?? [], $Parsedown); ?>
-        <?php endforeach; ?>
-    </div>
+    <div class="post-grid" id="home-audiences-grid"></div>
 </section>
-<?php endif; ?>
+<script>
+(function(){
+    var _g=[
+        'linear-gradient(135deg,#667eea 0%,#764ba2 100%)',
+        'linear-gradient(135deg,#f093fb 0%,#f5576c 100%)',
+        'linear-gradient(135deg,#4facfe 0%,#00f2fe 100%)',
+        'linear-gradient(135deg,#43e97b 0%,#38f9d7 100%)',
+        'linear-gradient(135deg,#fa709a 0%,#fee140 100%)',
+        'linear-gradient(135deg,#a18cd1 0%,#fbc2eb 100%)'
+    ];
+    function _e(s){return String(s).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');}
+    fetch('/trending?period=1h')
+        .then(function(r){return r.ok?r.text():Promise.reject();})
+        .then(function(xml){
+            var doc=new DOMParser().parseFromString(xml,'application/xml');
+            var items=Array.from(doc.querySelectorAll('item')).slice(0,6);
+            if(!items.length)return;
+            var grid=document.getElementById('home-audiences-grid');
+            if(!grid)return;
+            grid.innerHTML=items.map(function(item,i){
+                var raw=(item.querySelector('title')||{textContent:''}).textContent;
+                var title=raw.replace(/\s*\(\d+\s+visiteurs?\)$/,'');
+                var link=((item.querySelector('link')||{}).textContent||'#').trim();
+                var pd=(item.querySelector('pubDate')||{textContent:''}).textContent;
+                var date='';
+                try{if(pd)date=new Date(pd).toLocaleDateString('fr-FR');}catch(e){}
+                var grad=_g[i%_g.length];
+                return '<article class="card">'
+                    +'<div class="card-cover" style="background:'+grad+'"></div>'
+                    +'<div class="card-body d-flex flex-column">'
+                    +'<h2 class="card-title"><a href="'+_e(link)+'">'+_e(title)+'</a></h2>'
+                    +'<div class="post-entry-meta mt-auto">'
+                    +(date?'<span>'+_e(date)+'</span>':'')
+                    +'<a href="'+_e(link)+'" class="post-entry-read">→ lire</a>'
+                    +'</div></div>'
+                    +'<a href="'+_e(link)+'" class="stretched-link"></a>'
+                    +'</article>';
+            }).join('');
+            var s=document.getElementById('home-audiences-section');
+            if(s)s.hidden=false;
+        })
+        .catch(function(){});
+})();
+</script>
 
 <?php /* ─── Récemment mis à jour ──────────────────────────────────────── */ ?>
 <?php if (!empty($recentlyUpdated)): ?>