fix(#143): masquer Supprimer quand un gestionnaire édite sa propre fiche

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/lib/screens/administrateurs/creation/gestionnaires_create.dart

@@ -5,6 +5,7 @@ import 'package:p_tits_pas/utils/email_utils.dart';
 import 'package:p_tits_pas/widgets/email_text_field.dart';
 import 'package:p_tits_pas/widgets/french_phone_field.dart';
 import 'package:p_tits_pas/models/user.dart';
+import 'package:p_tits_pas/services/auth_service.dart';
 import 'package:p_tits_pas/services/relais_service.dart';
 import 'package:p_tits_pas/services/user_service.dart';
 
@@ -41,9 +42,15 @@ class _AdminUserFormDialogState extends State<AdminUserFormDialog> {
   bool _isLoadingRelais = true;
   List<RelaisModel> _relais = [];
   String? _selectedRelaisId;
+  String? _currentUserId;
   bool get _isEditMode => widget.initialUser != null;
   bool get _isSuperAdminTarget =>
       (widget.initialUser?.role ?? '').toLowerCase() == 'super_admin';
+  bool get _isSelfTarget =>
+      _isEditMode &&
+      _currentUserId != null &&
+      widget.initialUser!.id == _currentUserId;
+  bool get _canDeleteTarget => !_isSuperAdminTarget && !_isSelfTarget;
   bool get _isLockedAdminIdentity =>
       _isEditMode && widget.adminMode && _isSuperAdminTarget;
   String get _targetRoleKey {
@@ -109,6 +116,23 @@ class _AdminUserFormDialogState extends State<AdminUserFormDialog> {
     } else {
       _isLoadingRelais = false;
     }
+    _loadCurrentUserId();
+  }
+
+  Future<void> _loadCurrentUserId() async {
+    final cached = await AuthService.getCurrentUser();
+    if (!mounted) return;
+    if (cached != null) {
+      setState(() {
+        _currentUserId = cached.id;
+      });
+      return;
+    }
+    final refreshed = await AuthService.refreshCurrentUser();
+    if (!mounted || refreshed == null) return;
+    setState(() {
+      _currentUserId = refreshed.id;
+    });
   }
 
   @override
@@ -335,7 +359,7 @@ class _AdminUserFormDialogState extends State<AdminUserFormDialog> {
 
   Future<void> _delete() async {
     if (widget.readOnly) return;
-    if (_isSuperAdminTarget) return;
+    if (!_canDeleteTarget) return;
     if (!_isEditMode || _isSubmitting) return;
 
     final confirmed = await showDialog<bool>(
@@ -462,7 +486,7 @@ class _AdminUserFormDialogState extends State<AdminUserFormDialog> {
             child: const Text('Fermer'),
           ),
         ] else if (_isEditMode) ...[
-          if (!_isSuperAdminTarget)
+          if (_canDeleteTarget)
             OutlinedButton(
               onPressed: _isSubmitting ? null : _delete,
               style: OutlinedButton.styleFrom(foregroundColor: Colors.red.shade700),