Fix: email clearing in findOrCreateAuthor, htmlspecialchars(null) crash in old(), dead contact_interne field, access_type_id radio clearing

- findOrCreateAuthor: always update email column (pass null when empty/falsy) so clearing an email actually persists
- admin/add.php & admin/edit.php old(): add null guard before htmlspecialchars, cast to string
- jury-fieldset.php: guard against old() returning array for scalar-checked jury_lecteur keys
- formulaire.php: only suppress display_errors in production (not cli-server dev mode)
- Removed dead contact_interne field from backoffice form (no DB column, never saved)
- Removed dead contactInterne validation from ThesisCreateController
- Added "— Non défini" radio option for access_type_id in admin mode for clearing
- Fixed strict int-vs-string comparison breaking radio button checked detection

app/public/admin/actions/formulaire.php

@@ -3,9 +3,12 @@
 require_once __DIR__ . '/../../../bootstrap.php';
 require_once __DIR__ . '/../../../src/AdminAuth.php';
 
-ini_set('display_errors', 0);
-ini_set('log_errors', 1);
-ini_set('error_log', APP_ROOT . '/../error.log');
+// Only suppress display_errors in production (cli-server = dev mode).
+if (php_sapi_name() !== 'cli-server') {
+    ini_set('display_errors', 0);
+    ini_set('log_errors', 1);
+    ini_set('error_log', APP_ROOT . '/../error.log');
+}
 
 AdminAuth::requireLogin();
 

app/public/admin/add.php

@@ -41,7 +41,8 @@ function old($key, $default = "") {
     global $formData;
     if (!isset($formData[$key])) return $default;
     if (is_array($formData[$key])) return $formData[$key]; // Return raw array for callers that handle it
-    return htmlspecialchars($formData[$key]);
+    if ($formData[$key] === null) return $default;
+    return htmlspecialchars((string)$formData[$key]);
 }
 
 function wasSelected($key, $value) {

app/public/admin/edit.php

@@ -25,7 +25,8 @@ function old($key, $default = "") {
     global $formData;
     if (!isset($formData[$key])) return $default;
     if (is_array($formData[$key])) return $formData[$key]; // Return raw array for callers that handle it
-    return htmlspecialchars($formData[$key]);
+    if ($formData[$key] === null) return $default;
+    return htmlspecialchars((string)$formData[$key]);
 }
 
 try {