Fix form field required states & missing fields per spec

- Admin add: add contact_public checkbox (matching edit form)
- All forms: formats checkbox-list now required
- All forms: jury promoteur·ice interne required, lecteur·ice interne/externe required
- All forms: licence select now required
- Admin edit: add E-mail de confirmation fieldset
- Partage: contact always visible when provided (no contact_public field)
- Partage: filter PACS from AP programs dropdown
- Server-side validation: formats, jury, licence required (create + edit controllers)
- Autofocus mappings for new validation errors
- No duplicate asterisks — verified across all rendered fields
- fix: add missing old() function in admin edit controller
- refactor: move admin email field to Backoffice as Contact interne, never send email
- Untrack admin.log (covered by .gitignore)

app/public/partage/index.php

@@ -196,6 +196,9 @@ function renderShareLinkForm(string $slug, array $link): void
         die('Erreur lors du chargement du formulaire.');
     }
 
+    // Filter out PACS from AP programs for student forms (spec: admin-only AP)
+    $apPrograms = array_values(array_filter($apPrograms, fn($ap) => ($ap['name'] ?? '') !== 'PACS'));
+
     $formData = $_SESSION['form_data_share_' . $slug] ?? [];
     unset($_SESSION['form_data_share_' . $slug]);
 
@@ -303,7 +306,7 @@ function renderShareLinkForm(string $slug, array $link): void
                 <!-- ═══════════════════ Format(s) ═══════════════════ -->
                 <fieldset>
                     <legend>Format(s)</legend>
-                    <?php $name = 'formats'; $label = 'Format(s) du TFE :'; $options = $formatTypes; $checked = $formData['formats'] ?? []; include APP_ROOT . '/templates/partials/form/checkbox-list.php'; ?>
+                    <?php $name = 'formats'; $label = 'Format(s) du TFE :'; $options = $formatTypes; $checked = $formData['formats'] ?? []; $required = true; include APP_ROOT . '/templates/partials/form/checkbox-list.php'; ?>
                 </fieldset>
 
                 <!-- ═══════════════════ Mots-clés ═══════════════════ -->