Rejection retry flow with configurable wait days

- Usuario model: proRejectedAt parsed from professionals.updated_at
- _StatusCard: shows countdown or retry button based on rejection_wait_days setting
- Retry clears the rejected record via DELETE /professionals/me

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/models/usuario.dart

@@ -11,6 +11,7 @@ class Usuario {
   final String? birthday;
   final String? gender;
   final ProState proState;
+  final DateTime? proRejectedAt;
   final String? token;
   final bool isPhoneVerified;
 
@@ -26,6 +27,7 @@ class Usuario {
     required this.gender,
     required this.proState,
     required this.token,
+    this.proRejectedAt,
     this.isPhoneVerified = false,
   });
 
@@ -57,11 +59,24 @@ class Usuario {
       birthday: doc['birthday'],
       gender: doc['gender'],
       proState: intToEnum((doc['professional_state'] as int?) ?? 0),
+      proRejectedAt: _parseRejectedAt(doc),
       token: doc['token'],
       isPhoneVerified: doc['is_phone_verified'] as bool? ?? false,
     );
   }
 
+  static DateTime? _parseRejectedAt(Map<String, dynamic> doc) {
+    // /auth/me returns professionals nested; if pro_state==3 use professionals.updated_at
+    final state = (doc['professional_state'] as int?) ?? 0;
+    if (state != 3) return null;
+    final pros = doc['professionals'];
+    if (pros is Map) {
+      final raw = pros['updated_at'];
+      if (raw is String) return DateTime.tryParse(raw);
+    }
+    return null;
+  }
+
   @override
   String toString() {
     return 'User(id: $id, email: $email, phone: $phone, name: $name, nickname: $nickname, city: $city, picture: $picture, birthday: $birthday, gender: $gender, proState: $proState, token: $token)';