fix(#156): superviser nom, e-mail et CP comme à l’inscription.

IdentityBlock editable : capitalisation live, e-mail/CP normalisés
et validés à la perte de focus (aligné création de compte).

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

frontend/lib/widgets/common/identity_block.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:p_tits_pas/models/dossier_unifie.dart';
 import 'package:p_tits_pas/models/user.dart';
+import 'package:p_tits_pas/utils/name_format_utils.dart';
 import 'package:p_tits_pas/utils/phone_utils.dart';
 import 'package:p_tits_pas/widgets/admin/common/validation_detail_section.dart';
 
@@ -199,11 +200,17 @@ class IdentityBlock extends StatelessWidget {  final String? title;
         fields: [
           ValidationLabeledField(
             label: 'Nom',
-            field: ValidationEditableField(controller: _nomCtrl!),
+            field: ValidationEditableField(
+              controller: _nomCtrl!,
+              inputFormatters: const [PersonNameInputFormatter()],
+            ),
           ),
           ValidationLabeledField(
             label: 'Prénom',
-            field: ValidationEditableField(controller: _prenomCtrl!),
+            field: ValidationEditableField(
+              controller: _prenomCtrl!,
+              inputFormatters: const [PersonNameInputFormatter()],
+            ),
           ),
           ValidationLabeledField(
             label: 'Téléphone',
@@ -215,10 +222,7 @@ class IdentityBlock extends StatelessWidget {  final String? title;
           ),
           ValidationLabeledField(
             label: 'Email',
-            field: ValidationEditableField(
-              controller: _emailCtrl!,
-              keyboardType: TextInputType.emailAddress,
-            ),
+            field: ValidationEmailField(controller: _emailCtrl!),
           ),
           ValidationLabeledField(
             label: 'Adresse (N° et Rue)',
@@ -226,14 +230,14 @@ class IdentityBlock extends StatelessWidget {  final String? title;
           ),
           ValidationLabeledField(
             label: 'Code postal',
-            field: ValidationEditableField(
-              controller: _cpCtrl!,
-              keyboardType: TextInputType.number,
-            ),
+            field: ValidationPostalCodeField(controller: _cpCtrl!),
           ),
           ValidationLabeledField(
             label: 'Ville',
-            field: ValidationEditableField(controller: _villeCtrl!),
+            field: ValidationEditableField(
+              controller: _villeCtrl!,
+              inputFormatters: const [PersonNameInputFormatter()],
+            ),
           ),
         ],
       );