Separate admin views from controllers — move HTML to templates/admin/

All admin pages refactored to thin controllers + pure view templates, mirroring
the public-page pattern:

Controllers (public/admin/*.php): auth, data loading, include template
Views (templates/admin/*.php): pure HTML/PHP output
Fragment partials (templates/admin/partials/): toast, system-log-panel, system-nginx-config-panel

Pages migrated: login, tags, contenus, contenus-edit, account, acces-etudiante,
thanks, add, edit, parametres, system, index

Fragment endpoints refactored: system-fragment.php, toast-fragment.php
Skipped (pure redirects): logout, logs, status, import

app/public/admin/thanks.php

@@ -1,9 +1,7 @@
 <?php
-// Bootstrap application
 require_once __DIR__ . "/../../bootstrap.php";
 require_once __DIR__ . '/../../src/AdminAuth.php';
 
-// Configure error reporting
 ini_set('display_errors', 0);
 ini_set('log_errors', 1);
 ini_set('error_log', 'error.log');
@@ -15,7 +13,6 @@ if (!$studentMode) {
 
 require_once __DIR__ . '/../../src/Database.php';
 
-// Security: Validate thesis ID parameter
 $thesisId = null;
 $thesis = null;
 $files = [];
@@ -27,8 +24,6 @@ if (isset($_GET['id'])) {
     if ($thesisId !== false && $thesisId > 0) {
         try {
             $db = new Database();
-
-            // Get thesis data
             $thesis = $db->getThesis($thesisId);
 
             if (!$thesis) {
@@ -48,7 +43,6 @@ if (isset($_GET['id'])) {
     $error = "Aucun identifiant spécifié.";
 }
 
-// Helper function to format file size
 function formatFileSize($bytes) {
     if ($bytes >= 1073741824) {
         return number_format($bytes / 1073741824, 2) . ' GB';
@@ -61,135 +55,12 @@ function formatFileSize($bytes) {
     }
 }
 
-// Set page title for header
 $pageTitle = "Récapitulatif TFE";
-?>
-<?php
 $isAdmin = true;
-if ($studentMode) {
-    $bodyClass = 'admin-body student-body';
-    require_once APP_ROOT . '/templates/head.php';
-} else {
-    $bodyClass = 'admin-body';
-    require_once APP_ROOT . '/templates/head.php';
+$bodyClass = $studentMode ? 'admin-body student-body' : 'admin-body';
+require_once APP_ROOT . '/templates/head.php';
+if (!$studentMode) {
     include APP_ROOT . '/templates/header.php';
 }
-?>
-
-<main id="main-content">
-    <?php if ($studentMode): ?>
-    <!-- ═══════════════════ STUDENT MODE: Thank you page ═══════════════════ -->
-    <div class="thanks-student-page">
-        <?php if ($error): ?>
-            <div class="thanks-error">
-                <h1>⚠ Oups…</h1>
-                <p><?= htmlspecialchars($error) ?></p>
-                <a href="/admin/add.php?mode=student" class="btn-new-form">← Retour au formulaire</a>
-            </div>
-
-        <?php elseif ($thesis): ?>
-            <div class="thanks-success">
-                <h1>Merci 🎉</h1>
-                <p class="thanks-message">
-                    Ton TFE <strong><?= htmlspecialchars($thesis['title']) ?></strong> a bien été soumis.
-                </p>
-                <a href="/admin/add.php?mode=student" class="btn-new-form">+ Ajouter un nouveau TFE</a>
-            </div>
-        <?php else: ?>
-            <div class="thanks-error">
-                <h1>Erreur</h1>
-                <p>Aucune donnée à afficher.</p>
-                <a href="/admin/add.php?mode=student" class="btn-new-form">← Retour au formulaire</a>
-            </div>
-        <?php endif; ?>
-    </div>
-
-    <?php else: ?>
-    <!-- ═══════════════════ ADMIN MODE: Recap page ═══════════════════ -->
-    <h1>Récapitulatif TFE</h1>
-
-    <?php if ($error): ?>
-        <p class="toast" role="alert" data-type="error">⚠ <?= htmlspecialchars($error) ?></p>
-        <p><a href="/admin/add.php" class="admin-btn-secondary">Retour au formulaire</a></p>
-
-    <?php elseif ($thesis): ?>
-        <section>
-            <h2>Informations de base</h2>
-            <dl>
-                <dt>Identifiant</dt><dd><?= htmlspecialchars($thesis['identifier']) ?></dd>
-                <dt>Titre</dt><dd><?= htmlspecialchars($thesis['title']) ?></dd>
-                <?php if ($thesis['subtitle']): ?>
-                <dt>Sous-titre</dt><dd><?= htmlspecialchars($thesis['subtitle']) ?></dd>
-                <?php endif; ?>
-                <dt>Auteur·ice(s)</dt><dd><?= htmlspecialchars($thesis['authors']) ?></dd>
-                <dt>Année</dt><dd><?= htmlspecialchars($thesis['year']) ?></dd>
-            </dl>
-        </section>
-
-        <section>
-            <h2>Détails académiques</h2>
-            <dl>
-                <dt>Orientation</dt><dd><?= htmlspecialchars($thesis['orientation'] ?? '–') ?></dd>
-                <dt>Atelier pratique</dt><dd><?= htmlspecialchars($thesis['ap_program'] ?? '–') ?></dd>
-                <dt>Finalité</dt><dd><?= htmlspecialchars($thesis['finality_type'] ?? '–') ?></dd>
-                <?php if ($thesis['supervisors']): ?>
-                <dt>Promoteur·ice(s)</dt><dd><?= htmlspecialchars($thesis['supervisors']) ?></dd>
-                <?php endif; ?>
-            </dl>
-        </section>
-
-        <section>
-            <h2>Contenu</h2>
-            <dl>
-                <?php if ($thesis['languages']): ?>
-                <dt>Langue(s)</dt><dd><?= htmlspecialchars($thesis['languages']) ?></dd>
-                <?php endif; ?>
-                <?php if ($thesis['formats']): ?>
-                <dt>Format(s)</dt><dd><?= htmlspecialchars($thesis['formats']) ?></dd>
-                <?php endif; ?>
-                <?php if ($thesis['keywords']): ?>
-                <dt>Mots-clés</dt><dd><?= htmlspecialchars($thesis['keywords']) ?></dd>
-                <?php endif; ?>
-                <?php if ($thesis['file_size_info']): ?>
-                <dt>Durée / Taille</dt><dd><?= htmlspecialchars($thesis['file_size_info']) ?></dd>
-                <?php endif; ?>
-                <?php if ($thesis['baiu_link']): ?>
-                <dt>Lien</dt><dd><a href="<?= htmlspecialchars($thesis['baiu_link']) ?>" target="_blank" rel="noopener"><?= htmlspecialchars($thesis['baiu_link']) ?></a></dd>
-                <?php endif; ?>
-            </dl>
-        </section>
-
-        <?php if (!empty($files)): ?>
-        <section>
-            <h2>Fichiers</h2>
-            <table>
-                <thead><tr><th scope="col">Type</th><th scope="col">Fichier</th><th scope="col">Taille</th><th scope="col">Date</th></tr></thead>
-                <tbody>
-                    <?php foreach ($files as $f): ?>
-                    <tr>
-                        <td><?= htmlspecialchars($f['file_type']) ?></td>
-                        <td><?= htmlspecialchars($f['file_name']) ?></td>
-                        <td><?= formatFileSize($f['file_size']) ?></td>
-                        <td><?= date('d/m/Y H:i', strtotime($f['uploaded_at'])) ?></td>
-                    </tr>
-                    <?php endforeach; ?>
-                </tbody>
-            </table>
-        </section>
-        <?php endif; ?>
-
-        <div class="admin-action-bar">
-            <a href="/admin/edit.php?id=<?= $thesisId ?>" class="admin-btn">Modifier</a>
-            <a href="/admin/add.php" class="admin-btn-secondary">Ajouter un autre TFE</a>
-            <a href="/admin/" class="admin-btn-secondary">Retour à la liste</a>
-        </div>
-
-    <?php else: ?>
-        <p class="admin-muted">Aucune donnée à afficher.</p>
-        <p><a href="/admin/add.php" class="admin-btn-secondary">Retour au formulaire</a></p>
-    <?php endif; ?>
-
-    <?php endif; ?>
-</main>
-
-<?php require_once APP_ROOT . '/templates/admin/footer.php'; ?>
+include APP_ROOT . '/templates/admin/thanks.php';
+require_once APP_ROOT . '/templates/admin/footer.php';