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/src/AdminLogger.php

@@ -194,12 +194,6 @@ class AdminLogger
         ]);
     }
 
-    /** Parametres: delete all TFEs */
-    public function logDeleteAllTheses(int $count): void
-    {
-        $this->write('system', 'delete_all_theses', 'success', ['count' => $count]);
-    }
-
     /** Parametres: formulaire section toggles */
     public function logFormSettingsUpdate(array $newValues): void
     {

app/src/Controllers/ThesisCreateController.php

@@ -114,7 +114,7 @@ class ThesisCreateController
             'orientations'        => $this->db->getAllOrientations(),
             'apPrograms'          => $this->db->getAllAPPrograms(),
             'finalityTypes'       => $this->db->getAllFinalityTypes(),
-            'languages'           => $this->db->getAllLanguages(),
+            'languages'           => $this->db->getPredefinedLanguages(),
             'formatTypes'         => $this->db->getAllFormatTypes(),
             'licenseTypes'        => $this->db->getAllLicenseTypes(),
             'enabledAccessTypes'  => $this->db->getEnabledFormAccessTypes(),
@@ -467,8 +467,16 @@ class ThesisCreateController
         $languageIds = isset($post['languages']) && is_array($post['languages'])
             ? array_map('intval', $post['languages'])
             : [];
-        $autreRaw = trim($post['language_autre'] ?? '');
-        if ($autreRaw !== '') {
+        // language_autre: pill-based component sends an array; also handle legacy comma-separated string
+        $autreRaw = $post['language_autre'] ?? '';
+        if (is_array($autreRaw)) {
+            foreach ($autreRaw as $langName) {
+                $langName = trim($langName);
+                if ($langName !== '') {
+                    $languageIds[] = $this->db->getOrCreateLanguage($langName);
+                }
+            }
+        } elseif (is_string($autreRaw) && trim($autreRaw) !== '') {
             foreach (array_map('trim', explode(',', $autreRaw)) as $langName) {
                 if ($langName !== '') {
                     $languageIds[] = $this->db->getOrCreateLanguage($langName);

app/src/Controllers/ThesisEditController.php

@@ -95,7 +95,7 @@ class ThesisEditController
         $orientations  = $this->db->getAllOrientations();
         $apPrograms    = $this->db->getAllAPPrograms();
         $finalityTypes = $this->db->getAllFinalityTypes();
-        $languages     = $this->db->getAllLanguages();
+        $languages     = $this->db->getPredefinedLanguages();
         $formatTypes   = $this->db->getAllFormatTypes();
         $licenseTypes        = $this->db->getAllLicenseTypes();
         $enabledAccessTypes  = $this->db->getEnabledFormAccessTypes();
@@ -247,8 +247,16 @@ class ThesisEditController
             $langIds = isset($post['languages']) && is_array($post['languages'])
                 ? $post['languages']
                 : [];
-            $autreRaw = trim($post['language_autre'] ?? '');
-            if ($autreRaw !== '') {
+            // language_autre: pill-based component sends an array; also handle legacy comma-separated string
+            $autreRaw = $post['language_autre'] ?? '';
+            if (is_array($autreRaw)) {
+                foreach ($autreRaw as $langName) {
+                    $langName = trim($langName);
+                    if ($langName !== '') {
+                        $langIds[] = (string)$this->db->getOrCreateLanguage($langName);
+                    }
+                }
+            } elseif (is_string($autreRaw) && trim($autreRaw) !== '') {
                 foreach (array_map('trim', explode(',', $autreRaw)) as $langName) {
                     if ($langName !== '') {
                         $langIds[] = (string)$this->db->getOrCreateLanguage($langName);

app/src/Database.php

@@ -752,6 +752,21 @@ class Database
         return $stmt->fetchAll();
     }
 
+    /**
+     * Return only the predefined / hardcoded languages used as checkboxes
+     * in the form. All other languages go into the "Autre langue" input.
+     */
+    public function getPredefinedLanguages(): array
+    {
+        $stmt = $this->pdo->query(
+            "SELECT id, UPPER(SUBSTR(name,1,1)) || SUBSTR(name,2) as name, created_at
+             FROM languages
+             WHERE LOWER(name) IN ('français', 'anglais', 'néerlandais', 'francais', 'neerlandais')
+             ORDER BY name"
+        );
+        return $stmt->fetchAll();
+    }
+
     // ========================================================================
     // ADMIN LIST METHOD
     // ========================================================================
@@ -1940,17 +1955,6 @@ class Database
     /**
      * Delete every thesis in the database.
      */
-    public function deleteAllTheses(): int
-    {
-        $ids = $this->pdo->query('SELECT id FROM theses')->fetchAll(\PDO::FETCH_COLUMN);
-        if (empty($ids)) {
-            return 0;
-        }
-        $count = count($ids);
-        $this->bulkDeleteTheses($ids);
-        return $count;
-    }
-
     /**
      * Insert a thesis file record.
      * sort_order defaults to (max existing sort_order + 1) for the thesis.