Fix category dates: use event.endAt as default, auto-correct if endAt < startAt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Controller/AccountController.php

@@ -417,6 +417,10 @@ class AccountController extends AbstractController
             $category->setEndAt(new \DateTimeImmutable($endAt));
         }
 
+        if ($category->getEndAt() < $category->getStartAt()) {
+            $category->setEndAt($category->getStartAt()->modify('+30 days'));
+        }
+
         $em->persist($category);
         $em->flush();
 

templates/account/edit_event.html.twig

@@ -175,7 +175,7 @@
                 </div>
                 <div>
                     <label for="cat_end" class="text-xs font-black uppercase tracking-widest form-label">Fin vente</label>
-                    <input type="datetime-local" id="cat_end" name="end_at" class="form-input focus:border-indigo-600" value="{{ event.startAt|date('Y-m-d\\TH:i') }}">
+                    <input type="datetime-local" id="cat_end" name="end_at" class="form-input focus:border-indigo-600" value="{{ event.endAt|date('Y-m-d\\TH:i') }}">
                 </div>
                 <button type="submit" class="btn-brutal font-black uppercase text-xs tracking-widest hover:bg-indigo-600 hover:text-white transition-all">
                     + Ajouter