Add language-search component for Autre Langue input + active search in lists

Mirrors the mots-clé tag-search system: dropdown suggestions from
existing languages via HTMX, pill display with bin-icon remove buttons,
'Créer' option for new languages. Replaces the plain text input.

- New partial: templates/partials/form/language-search.php
- New fragment: public/partage/language-search-fragment.php
- Admin wrapper: public/admin/language-search-fragment.php
- Updated language-autre-fragment to return just the required asterisk indicator
- Updated both controllers to handle language_autre as array (pill-based)
  with backward-compatible string path
- Updated edit form to compute selectedOtherLanguages from DB
- Registered new route in partage/index.php
- Fix CSV importer: split comma-separated language column into individual entries
- Add htmx active search to admin index, title line-clamp, predefined languages only in checkboxes
- Admin index: filter form now uses htmx triggers (input delay:300ms on search,
  change on selects) to actively search without page reload
- Sort links include hx-push-url for back-button support
- Added loading indicator bar (.admin-search-indicator)
- Title column: line-clamp at 2 lines with overflow hidden, native title attr
  tooltip for full text
- Language checkboxes now show only 3 predefined languages (Français, Anglais,
  Néerlandais); all others go via the Autre langue search component
- Added Database::getPredefinedLanguages() and excluded predefined from
  language-search-fragment suggestions
- Included hidden sort/dir inputs in table-wrap so sort state preserved across
  filter changes
- Fix language-search: block 'Créer' for predefined languages in dropdown
  The 'Créer' option in the language-search dropdown now also checks against the
  predefined set (français, anglais, néerlandais) to avoid offering creation of
  languages that already exist as checkboxes.

app/public/admin/actions/delete.php

@@ -16,20 +16,14 @@ if (!isset($_POST['csrf_token'], $_SESSION['csrf_token'])
     exit;
 }
 
-$isBulk      = !empty($_POST['bulk']);
-$isDeleteAll = !empty($_POST['delete_all']);
+$isBulk = !empty($_POST['bulk']);
 
 try {
     $db = new Database();
 
     $logger = AdminLogger::make();
 
-    if ($isDeleteAll) {
-        $count = $db->deleteAllTheses();
-        $logger->logDeleteAllTheses($count);
-        App::flash('success', "$count TFE(s) supprimé(s) avec succès.");
-
-    } elseif ($isBulk) {
+    if ($isBulk) {
         $ids = array_filter(array_map('intval', $_POST['selected_theses'] ?? []), fn($id) => $id > 0);
 
         if (empty($ids)) {

app/public/admin/contenus.php

@@ -18,6 +18,7 @@ try {
     $pages          = array_values(array_filter($allPages, fn($p) => in_array($p['slug'], $allowedPageSlugs, true)));
     $aproposKeys    = $db->getAllAproposContents();
     $formHelpBlocks = $db->getAllFormHelpBlocks();
+    $siteSettings   = $db->getAllSettings();
 } catch (Exception $e) {
     error_log("Error loading contenus: " . $e->getMessage());
     die("Erreur lors du chargement des contenus.");

app/public/admin/index.php

@@ -349,18 +349,21 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['csv_file'])) {
                         }
                     }
                     if (!empty($languageRaw)) {
-                        $langName = strtolower(trim($languageRaw));
-                        // Lookup case-insensitively; insert if missing (stored lowercase).
-                        $s = $importPdo->prepare("SELECT id FROM languages WHERE LOWER(name) = LOWER(?)");
-                        $s->execute([$langName]);
-                        $r = $s->fetch();
-                        $langId = $r ? (int)$r['id'] : null;
-                        if ($langId === null) {
-                            $importPdo->prepare("INSERT INTO languages (name) VALUES (?)")->execute([$langName]);
-                            $langId = (int)$importPdo->lastInsertId();
+                        foreach (array_map('trim', explode(',', $languageRaw)) as $langName) {
+                            $langName = strtolower($langName);
+                            if ($langName === '') continue;
+                            // Lookup case-insensitively; insert if missing (stored lowercase).
+                            $s = $importPdo->prepare("SELECT id FROM languages WHERE LOWER(name) = LOWER(?)");
+                            $s->execute([$langName]);
+                            $r = $s->fetch();
+                            $langId = $r ? (int)$r['id'] : null;
+                            if ($langId === null) {
+                                $importPdo->prepare("INSERT INTO languages (name) VALUES (?)")->execute([$langName]);
+                                $langId = (int)$importPdo->lastInsertId();
+                            }
+                            $s2 = $importPdo->prepare("INSERT INTO thesis_languages (thesis_id, language_id) VALUES (?,?)");
+                            $s2->execute([$thesisId, $langId]);
                         }
-                        $s2 = $importPdo->prepare("INSERT INTO thesis_languages (thesis_id, language_id) VALUES (?,?)");
-                        $s2->execute([$thesisId, $langId]);
                     }
                     if (!empty($formatsRaw)) {
                         foreach (array_map('trim', explode(',', $formatsRaw)) as $fmt) {

app/public/admin/language-search-fragment.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * language-search-fragment.php (admin)
+ *
+ * HTMX fragment: returns matching language suggestions for the
+ * "Autre(s) langue(s)" interactive search input. Admin-auth gated wrapper.
+ */
+require_once __DIR__ . '/../../bootstrap.php';
+require_once __DIR__ . '/../../src/AdminAuth.php';
+
+AdminAuth::requireLogin();
+
+require_once APP_ROOT . '/public/partage/language-search-fragment.php';

app/public/admin/parametres.php

@@ -16,7 +16,6 @@ $siteSettings  = $db->getAllSettings();
 $peerTubeSettings   = PeerTubeService::getSettings($db);
 $peerTubeEnabled    = PeerTubeService::isEnabled($db);
 $peerTubeConfigured = PeerTubeService::isConfigured($db);
-$stats         = $db->getThesesStats();
 $smtpSettings   = SmtpRelay::getSettings($db);
 $smtpConfigured  = SmtpRelay::isConfigured($db);
 $smtpErrorField  = $_SESSION['_flash_smtp_field'] ?? null;

app/public/assets/css/admin.css

@@ -379,6 +379,11 @@ th.admin-ap-col {
 
 .admin-body table .thesis-title {
     font-weight: 500;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
+    word-break: break-word;
 }
 
 .admin-body table .thesis-subtitle {
@@ -1943,3 +1948,26 @@ th.admin-ap-col {
     margin: 0;
   }
 }
+
+/* ── Active search loading indicator ───────────────────────────────────── */
+.admin-search-indicator {
+  display: block;
+  height: 2px;
+  background: var(--accent-primary);
+  opacity: 0;
+  transition: opacity 0.15s;
+  pointer-events: none;
+  margin-top: var(--space-2xs);
+}
+
+.admin-search-indicator.htmx-request {
+  opacity: 1;
+  animation: admin-search-progress 1.2s ease-in-out infinite;
+}
+
+@keyframes admin-search-progress {
+  0%   { transform: scaleX(0);   transform-origin: left;  }
+  50%  { transform: scaleX(1);   transform-origin: left;  }
+  50.01% { transform: scaleX(1); transform-origin: right; }
+  100% { transform: scaleX(0);   transform-origin: right; }
+}

app/public/partage/index.php

@@ -56,6 +56,13 @@ if ($slug === 'tag-search-fragment' && $_SERVER['REQUEST_METHOD'] === 'POST') {
     exit;
 }
 
+// Special route: /partage/language-search-fragment (HTMX fragment — interactive language search)
+if ($slug === 'language-search-fragment' && $_SERVER['REQUEST_METHOD'] === 'POST') {
+    App::boot();
+    require_once __DIR__ . '/language-search-fragment.php';
+    exit;
+}
+
 // Special route: /partage/recapitulatif?id=N
 if ($slug === 'recapitulatif' || $slug === 'recapitulatif.php') {
     App::boot();

app/public/partage/language-autre-fragment.php

@@ -2,9 +2,9 @@
 /**
  * language-autre-fragment.php
  *
- * Shared HTMX fragment include: returns the "Autre(s) langue(s)" input row
- * when no standard language checkbox is checked, or the plain (non-required)
- * variant when at least one is checked.
+ * Shared HTMX fragment include: returns the requirement asterisk for the
+ * "Autre(s) langue(s)" label. When no standard language checkbox is checked,
+ * an asterisk is rendered to signal the field is required (server-side validated).
  *
  * Included by:
  *   - /admin/language-autre-fragment.php  (AdminAuth gated)
@@ -12,25 +12,11 @@
  *
  * Expected POST:
  *   languages[]      — selected language IDs (may be absent)
- *   language_autre   — current free-text value (for repopulation)
  */
 
 $selectedIds  = isset($_POST['languages']) && is_array($_POST['languages'])
     ? $_POST['languages']
     : [];
-$currentValue = htmlspecialchars(trim($_POST['language_autre'] ?? ''));
 $anyChecked   = !empty($selectedIds);
 ?>
-<div id="language-autre-row">
-    <div>
-        <label for="language_autre">Autre(s) langue(s) :<?= !$anyChecked ? ' <span class="asterisk">*</span>' : '' ?></label>
-        <div>
-            <input type="text"
-                   id="language_autre"
-                   name="language_autre"
-                   value="<?= $currentValue ?>"
-                   <?= !$anyChecked ? 'required' : '' ?>>
-            <small>Si votre TFE contient une langue absente de la liste, précisez-la ici.</small>
-        </div>
-    </div>
-</div>
+<span id="language-autre-required"><?= !$anyChecked ? ' <span class="asterisk">*</span>' : '' ?></span>

app/public/partage/language-search-fragment.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * language-search-fragment.php
+ *
+ * Shared HTMX fragment: returns matching language suggestions for the
+ * "Autre(s) langue(s)" interactive search input.
+ *
+ * Included by:
+ *   - /admin/language-search-fragment.php  (AdminAuth gated)
+ *   - partage/index.php special route      (public, session already booted)
+ *
+ * Expected POST:
+ *   q                  — search query string (partial language name)
+ *   language_autre[]   — already selected language names (for exclusion)
+ */
+require_once __DIR__ . '/../../src/Database.php';
+
+$query = trim(preg_replace('/\s+/', ' ', strtolower($_POST['q'] ?? '')));
+$currentLanguages = isset($_POST['language_autre']) && is_array($_POST['language_autre'])
+    ? array_map(function($l) { return trim(preg_replace('/\s+/', ' ', strtolower($l))); }, $_POST['language_autre'])
+    : [];
+
+$db      = Database::getInstance();
+
+// Search existing languages by name, excluding predefined ones (already shown as checkboxes)
+$predefined = ["français", "anglais", "néerlandais", "francais", "neerlandais"];
+if ($query !== '') {
+    $placeholders = implode(',', array_fill(0, count($predefined), '?'));
+    $stmt = $db->getConnection()->prepare(
+        "SELECT l.id, UPPER(SUBSTR(l.name,1,1)) || SUBSTR(l.name,2) as name,
+                COUNT(DISTINCT tl.thesis_id) as thesis_count
+         FROM languages l
+         LEFT JOIN thesis_languages tl ON l.id = tl.language_id
+         WHERE LOWER(l.name) LIKE ?
+           AND LOWER(l.name) NOT IN ($placeholders)
+         GROUP BY l.id
+         ORDER BY LOWER(l.name) = ? DESC, thesis_count DESC, LOWER(l.name)
+         LIMIT 10"
+    );
+    $stmt->execute(array_merge([$query . '%'], $predefined, [$query]));
+} else {
+    $placeholders = implode(',', array_fill(0, count($predefined), '?'));
+    $stmt = $db->getConnection()->prepare(
+        "SELECT l.id, UPPER(SUBSTR(l.name,1,1)) || SUBSTR(l.name,2) as name,
+                COUNT(DISTINCT tl.thesis_id) as thesis_count
+         FROM languages l
+         LEFT JOIN thesis_languages tl ON l.id = tl.language_id
+         WHERE LOWER(l.name) NOT IN ($placeholders)
+         GROUP BY l.id
+         ORDER BY thesis_count DESC, LOWER(l.name)
+         LIMIT 10"
+    );
+    $stmt->execute($predefined);
+}
+
+$results = $stmt->fetchAll();
+
+// Deduplicate results by lowercase name
+$seen = [];
+$results = array_values(array_filter($results, function($lang) use (&$seen) {
+    $key = strtolower($lang['name']);
+    if (isset($seen[$key])) return false;
+    $seen[$key] = true;
+    return true;
+}));
+
+// Filter out already-selected languages (case-insensitive)
+$results = array_values(array_filter($results, function($lang) use ($currentLanguages) {
+    return !in_array(strtolower($lang['name']), $currentLanguages, true);
+}));
+
+// Check if query exactly matches an existing language (case-insensitive)
+// Also check against predefined languages to avoid suggesting creation of a checkbox language
+$exactExists = false;
+foreach ($results as $lang) {
+    if (strcasecmp($lang['name'], $query) === 0) {
+        $exactExists = true;
+        break;
+    }
+}
+if (!$exactExists && $query !== '') {
+    $normalisedQuery = strtolower($query);
+    $normalisedPredefined = array_map('strtolower', $predefined);
+    if (in_array($normalisedQuery, $normalisedPredefined, true)) {
+        $exactExists = true;
+    }
+}
+
+// If no exact match and query non-empty, suggest creation
+$canCreate = ($query !== '' && !$exactExists && !in_array($query, $currentLanguages, true));
+?>
+<?php if (empty($results) && !$canCreate): ?>
+<div class="tag-search-empty">Aucune langue trouvée.</div>
+<?php endif; ?>
+
+<?php foreach ($results as $lang): ?>
+<button type="button" class="tag-search-item" data-tag-id="<?= (int)$lang['id'] ?>" data-tag-name="<?= htmlspecialchars($lang['name']) ?>">
+    <span class="tag-search-item-name"><?= htmlspecialchars($lang['name']) ?></span>
+    <span class="tag-search-item-count">(<?= (int)$lang['thesis_count'] ?>)</span>
+</button>
+<?php endforeach; ?>
+
+<?php if ($canCreate): ?>
+<button type="button" class="tag-search-item tag-search-item--create" data-tag-name="<?= htmlspecialchars($query) ?>">
+    <span class="tag-search-item-name">Créer «&nbsp;<?= htmlspecialchars($query) ?>&nbsp;»</span>
+</button>
+<?php endif; ?>