feat(#140): dashboard admin ch.6 — fiche parent, enfants, affiliation

Back: PATCH /parents/:id/fiche, attach/detach enfant, GET /enfants enrichi.
Front: modale parent éditable, onglet Enfants, fiche enfant, UserService.

Couvre doc 28 §6.1–6.2 ; tickets liés #115 #116 #130 #131 #137 #138.
Hors scope: fiche AM (#131), création admin (#129).

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

frontend/lib/models/enfant_admin_model.dart

@@ -0,0 +1,106 @@
+import 'package:p_tits_pas/models/user.dart';
+
+/// Enfant tel que renvoyé par `GET /enfants` (dashboard admin).
+class EnfantAdminModel {
+  final String id;
+  final String? firstName;
+  final String? lastName;
+  final String? gender;
+  final String? birthDate;
+  final String? dueDate;
+  final String status;
+  final String? photoUrl;
+  final bool consentPhoto;
+  final bool isMultiple;
+  final List<EnfantParentLink> parentLinks;
+
+  EnfantAdminModel({
+    required this.id,
+    this.firstName,
+    this.lastName,
+    this.gender,
+    this.birthDate,
+    this.dueDate,
+    required this.status,
+    this.photoUrl,
+    this.consentPhoto = false,
+    this.isMultiple = false,
+    this.parentLinks = const [],
+  });
+
+  String get fullName {
+    final fn = (firstName ?? '').trim();
+    final ln = (lastName ?? '').trim();
+    if (fn.isEmpty && ln.isEmpty) return 'Enfant';
+    if (ln.isEmpty) return fn;
+    return '$fn $ln';
+  }
+
+  factory EnfantAdminModel.fromJson(Map<String, dynamic> json) {
+    final linksRaw = json['parentLinks'] as List?;
+    final links = <EnfantParentLink>[];
+    if (linksRaw != null) {
+      for (final item in linksRaw) {
+        if (item is Map<String, dynamic>) {
+          links.add(EnfantParentLink.fromJson(item));
+        }
+      }
+    }
+
+    return EnfantAdminModel(
+      id: (json['id'] ?? '').toString(),
+      firstName: json['first_name'] as String?,
+      lastName: json['last_name'] as String?,
+      gender: json['gender'] as String?,
+      birthDate: _dateString(json['birth_date']),
+      dueDate: _dateString(json['due_date']),
+      status: (json['status'] ?? '').toString(),
+      photoUrl: json['photo_url'] as String?,
+      consentPhoto: json['consent_photo'] == true,
+      isMultiple: json['is_multiple'] == true,
+      parentLinks: links,
+    );
+  }
+
+  Map<String, dynamic> toUpdateJson() {
+    return {
+      if (firstName != null) 'first_name': firstName,
+      if (lastName != null) 'last_name': lastName,
+      if (gender != null && gender!.isNotEmpty) 'gender': gender,
+      'status': status,
+      if (birthDate != null && birthDate!.isNotEmpty) 'birth_date': birthDate,
+      if (dueDate != null && dueDate!.isNotEmpty) 'due_date': dueDate,
+      'consent_photo': consentPhoto,
+      'is_multiple': isMultiple,
+    };
+  }
+
+  static String? _dateString(dynamic v) {
+    if (v == null) return null;
+    if (v is String) return v.split('T').first;
+    return v.toString().split('T').first;
+  }
+}
+
+class EnfantParentLink {
+  final String parentId;
+  final String? parentName;
+
+  EnfantParentLink({required this.parentId, this.parentName});
+
+  factory EnfantParentLink.fromJson(Map<String, dynamic> json) {
+    final parent = json['parent'];
+    String? name;
+    if (parent is Map<String, dynamic>) {
+      final user = parent['user'];
+      if (user is Map<String, dynamic>) {
+        final u = AppUser.fromJson(user);
+        name = u.fullName.isNotEmpty ? u.fullName : u.email;
+      }
+    }
+    return EnfantParentLink(
+      parentId: (json['parentId'] ?? json['id_parent'] ?? '').toString(),
+      parentName: name,
+    );
+  }
+}

frontend/lib/models/parent_child_summary.dart

@@ -0,0 +1,31 @@
+/// Résumé enfant affiché dans la fiche parent (dashboard admin).
+class ParentChildSummary {
+  final String id;
+  final String? firstName;
+  final String? lastName;
+  final String status;
+
+  ParentChildSummary({
+    required this.id,
+    this.firstName,
+    this.lastName,
+    required this.status,
+  });
+
+  String get fullName {
+    final fn = (firstName ?? '').trim();
+    final ln = (lastName ?? '').trim();
+    if (fn.isEmpty && ln.isEmpty) return 'Enfant';
+    if (ln.isEmpty) return fn;
+    return '$fn $ln';
+  }
+
+  factory ParentChildSummary.fromJson(Map<String, dynamic> json) {
+    return ParentChildSummary(
+      id: (json['id'] ?? '').toString(),
+      firstName: json['first_name'] as String?,
+      lastName: json['last_name'] as String?,
+      status: (json['status'] ?? '').toString(),
+    );
+  }
+}

frontend/lib/models/parent_model.dart

@@ -1,18 +1,40 @@
+import 'package:p_tits_pas/models/parent_child_summary.dart';
 import 'package:p_tits_pas/models/user.dart';
 
 class ParentModel {
   final AppUser user;
   final int childrenCount;
+  final List<ParentChildSummary> children;
 
-  ParentModel({required this.user, this.childrenCount = 0});
+  ParentModel({
+    required this.user,
+    this.childrenCount = 0,
+    this.children = const [],
+  });
 
   factory ParentModel.fromJson(Map<String, dynamic> json) {
-    final userJson = json['user'] ?? json;
+    final userJson = Map<String, dynamic>.from(json['user'] ?? json);
+    if (json['numero_dossier'] != null && userJson['numero_dossier'] == null) {
+      userJson['numero_dossier'] = json['numero_dossier'];
+    }
     final user = AppUser.fromJson(userJson);
-    final children = json['parentChildren'] as List?;
+
+    final children = <ParentChildSummary>[];
+    final links = json['parentChildren'] as List?;
+    if (links != null) {
+      for (final link in links) {
+        if (link is Map<String, dynamic> && link['child'] is Map<String, dynamic>) {
+          children.add(
+            ParentChildSummary.fromJson(link['child'] as Map<String, dynamic>),
+          );
+        }
+      }
+    }
+
     return ParentModel(
       user: user,
-      childrenCount: children?.length ?? 0,
+      childrenCount: children.isNotEmpty ? children.length : (links?.length ?? 0),
+      children: children,
     );
   }
 }