12 changed files with 25 additions and 209 deletions
--- a/backend/src/routes/enfants/enfants.service.ts
+++ b/backend/src/routes/enfants/enfants.service.ts
@ -146,27 +146,16 @@ export class EnfantsService {
    throw new ForbiddenException('Accès interdit');
  }

-  /** Flag API #157 — true si aucun lien enfants_parents. */
-  private withSansResponsable(child: Children): Children & { sans_responsable: boolean } {
-    return Object.assign(child, {
-      sans_responsable: !child.parentLinks || child.parentLinks.length === 0,
-    });
-  }
-
-  // Liste des enfants (admin/gestionnaire) — inclut les orphelins (parentLinks: [])
-  async findAll(): Promise<Array<Children & { sans_responsable: boolean }>> {
-    const children = await this.childrenRepository.find({
+  // Liste des enfants (admin/gestionnaire)
+  async findAll(): Promise<Children[]> {
+    return this.childrenRepository.find({
      relations: ['parentLinks', 'parentLinks.parent', 'parentLinks.parent.user'],
      order: { last_name: 'ASC', first_name: 'ASC' },
    });
-    return children.map((c) => this.withSansResponsable(c));
  }

  // Récupérer un enfant par id
-  async findOne(
-    id: string,
-    currentUser: Users,
-  ): Promise<Children & { sans_responsable: boolean }> {
+  async findOne(id: string, currentUser: Users): Promise<Children> {
    const child = await this.childrenRepository.findOne({
      where: { id },
      relations: ['parentLinks', 'parentLinks.parent', 'parentLinks.parent.user'],
@ -183,14 +172,14 @@ export class EnfantsService {
      case RoleType.ADMINISTRATEUR:
      case RoleType.SUPER_ADMIN:
      case RoleType.GESTIONNAIRE:
-        // accès complet (y compris orphelins)
+        // accès complet
        break;

      default:
        throw new ForbiddenException('Accès interdit');
    }

-    return this.withSansResponsable(child);
+    return child;
  }


--- a/backend/src/routes/parents/parents.service.ts
+++ b/backend/src/routes/parents/parents.service.ts
@ -138,9 +138,7 @@ export class ParentsService {
  }

  /**
-   * Détacher un enfant d'un parent sans supprimer l'enfant.
-   * Autorise le détachement du dernier responsable (#157) — l'enfant reste listé
-   * via GET /enfants avec parentLinks vides (alerte front).
+   * Détacher un enfant d'un parent sans supprimer l'enfant. Ticket #115 / doc 28 §6.2.
   */
  async detachEnfant(parentUserId: string, enfantId: string): Promise<Parents> {
    await this.findOne(parentUserId);
@ -152,6 +150,11 @@ export class ParentsService {
      throw new NotFoundException('Lien parent-enfant introuvable');
    }

+    const totalLinks = await this.parentsChildrenRepository.count({ where: { enfantId } });
+    if (totalLinks <= 1) {
+      throw new BadRequestException('Un enfant doit rester rattaché à au moins un responsable');
+    }
+
    await this.parentsChildrenRepository.delete({ parentId: parentUserId, enfantId });
    return this.findOne(parentUserId);
  }
--- a/frontend/lib/models/enfant_admin_model.dart
+++ b/frontend/lib/models/enfant_admin_model.dart
@ -14,8 +14,6 @@ class EnfantAdminModel {
  final bool consentPhoto;
  final bool isMultiple;
  final List<EnfantParentLink> parentLinks;
-  /// Flag API #157 (sinon déduit de [parentLinks]).
-  final bool? sansResponsable;

  EnfantAdminModel({
    required this.id,
@ -29,7 +27,6 @@ class EnfantAdminModel {
    this.consentPhoto = false,
    this.isMultiple = false,
    this.parentLinks = const [],
-    this.sansResponsable,
  });

  String get fullName {
@ -40,12 +37,6 @@ class EnfantAdminModel {
    return '$fn $ln';
  }

-  /// Aucun lien parent valide — ticket #157.
-  bool get hasNoResponsable {
-    if (sansResponsable != null) return sansResponsable!;
-    return !parentLinks.any((l) => l.parentId.trim().isNotEmpty);
-  }
-
  EnfantAdminModel copyWith({
    String? id,
    String? firstName,
@ -58,7 +49,6 @@ class EnfantAdminModel {
    bool? consentPhoto,
    bool? isMultiple,
    List<EnfantParentLink>? parentLinks,
-    bool? sansResponsable,
  }) {
    return EnfantAdminModel(
      id: id ?? this.id,
@ -72,7 +62,6 @@ class EnfantAdminModel {
      consentPhoto: consentPhoto ?? this.consentPhoto,
      isMultiple: isMultiple ?? this.isMultiple,
      parentLinks: parentLinks ?? this.parentLinks,
-      sansResponsable: sansResponsable ?? this.sansResponsable,
    );
  }

@ -92,13 +81,6 @@ class EnfantAdminModel {
        _parseBool(json['consentement_photo']) ||
        _parseBool(json['consentPhoto']);

-    bool? sansResponsable;
-    if (json.containsKey('sans_responsable') ||
-        json.containsKey('sansResponsable')) {
-      sansResponsable = _parseBool(json['sans_responsable']) ||
-          _parseBool(json['sansResponsable']);
-    }
-
    return EnfantAdminModel(
      id: (json['id'] ?? '').toString(),
      firstName: json['first_name'] as String? ?? json['prenom'] as String?,
@ -114,7 +96,6 @@ class EnfantAdminModel {
      isMultiple: _parseBool(json['is_multiple']) ||
          _parseBool(json['est_multiple']),
      parentLinks: links,
-      sansResponsable: sansResponsable,
    );
  }

--- a/frontend/lib/models/parent_model.dart
+++ b/frontend/lib/models/parent_model.dart
@ -62,56 +62,4 @@ class ParentModel {

    return children;
  }
-
-  /// Nombre d’enfants distincts du foyer (ce parent + co-parent / même dossier).
-  /// Évite Claire=7 / Thomas=6 quand un lien n’est que sur un des deux (#157).
-  static int foyerChildrenCount(
-    ParentModel parent,
-    List<ParentModel> allParents,
-  ) {
-    final memberIds = <String>{parent.user.id};
-    final coId = parent.coParent?.id.trim();
-    if (coId != null && coId.isNotEmpty) memberIds.add(coId);
-
-    final dossier = (parent.user.numeroDossier ?? '').trim();
-
-    for (final other in allParents) {
-      if (memberIds.contains(other.user.id)) continue;
-      final otherCo = other.coParent?.id.trim();
-      if (otherCo != null && memberIds.contains(otherCo)) {
-        memberIds.add(other.user.id);
-        continue;
-      }
-      if (dossier.isNotEmpty &&
-          (other.user.numeroDossier ?? '').trim() == dossier) {
-        memberIds.add(other.user.id);
-        final oc = other.coParent?.id.trim();
-        if (oc != null && oc.isNotEmpty) memberIds.add(oc);
-      }
-    }
-
-    final childIds = <String>{};
-    for (final p in allParents) {
-      if (!memberIds.contains(p.user.id)) continue;
-      for (final c in p.children) {
-        final id = c.id.trim();
-        if (id.isNotEmpty) childIds.add(id);
-      }
-      // Repli si la liste enfants n’est pas hydratée.
-      if (p.children.isEmpty && p.childrenCount > 0) {
-        // Impossible de dédupliquer sans IDs : on prend au moins ce compte.
-        // (évite d’afficher 0 si l’API n’envoie que childrenCount)
-      }
-    }
-
-    if (childIds.isNotEmpty) return childIds.length;
-
-    var maxCount = 0;
-    for (final p in allParents) {
-      if (!memberIds.contains(p.user.id)) continue;
-      final n = p.children.isNotEmpty ? p.children.length : p.childrenCount;
-      if (n > maxCount) maxCount = n;
-    }
-    return maxCount;
-  }
 }
--- a/frontend/lib/utils/enfant_vigilance.dart
+++ b/frontend/lib/utils/enfant_vigilance.dart
@ -1,10 +0,0 @@
-import 'package:p_tits_pas/models/enfant_admin_model.dart';
-
-/// Enfant sans lien parent (orphelins d’affiliation) — ticket #157.
-bool enfantHasNoResponsable(EnfantAdminModel enfant) => enfant.hasNoResponsable;
-
-/// Message vigilance liste Enfants (même usage que [amPlacesVigilanceMessage]).
-String? enfantSansResponsableVigilanceMessage(EnfantAdminModel enfant) {
-  if (!enfantHasNoResponsable(enfant)) return null;
-  return 'Aucun responsable rattaché — à rattacher à un foyer';
-}
--- a/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_am_edit_modal.dart
@ -446,7 +446,8 @@ class _AdminAmEditModalState extends State<AdminAmEditModal>
      builder: (ctx) => AlertDialog(
        title: const Text('Détacher l\'enfant'),
        content: Text(
-          'Retirer ${child.fullName} de la fiche de cette assistante ?',
+          'Retirer ${child.fullName} de la fiche de cette assistante ?\n'
+          '(L\'enfant ne sera pas supprimé.)',
        ),
        actions: [
          TextButton(
--- a/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_child_detail_modal.dart
@ -65,9 +65,6 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
  /// Famille choisie en mode création (#132).
  AdminFamilleFoyer? _selectedFamily;

-  /// Liens parents locaux (édition) — mis à jour après rattachement foyer (#157).
-  List<EnfantParentLink>? _localParentLinks;
-
  /// Photo locale (création) — upload multipart `photo`.
  Uint8List? _photoBytes;
  String? _photoFilename;
@ -265,14 +262,10 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
  }

  List<EnfantParentLink> get _parentLinks =>
-      (_localParentLinks ??
-              widget.enfant?.parentLinks ??
-              const <EnfantParentLink>[])
+      (widget.enfant?.parentLinks ?? const <EnfantParentLink>[])
          .where((l) => l.parentId.trim().isNotEmpty)
          .toList();

-  bool get _isOrphan => !widget.isCreating && _parentLinks.isEmpty;
-
  Future<void> _openParent(EnfantParentLink link) async {
    if (_busy) return;
    final id = link.parentId.trim();
@ -587,7 +580,6 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
        if (!enfantStatusValues.contains(_status)) {
          _status = 'sans_garde';
        }
-        _localParentLinks = enfant.parentLinks;
        _coerceGenderForStatus();
      });
    } catch (_) {
@ -968,12 +960,10 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
                      padding: const EdgeInsets.only(top: 16),
                      child: Align(
                        alignment: Alignment.bottomCenter,
-                        child: SingleChildScrollView(
                        child: _placementBlock(),
                      ),
                    ),
                  ),
-                  ),
                ],
              ),
            ),
@ -1229,24 +1219,6 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
      mainAxisSize: MainAxisSize.min,
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
-        if (_isOrphan) ...[
-          Text(
-            'Sélection du dossier de la famille',
-            style: TextStyle(
-              fontSize: 14,
-              fontWeight: FontWeight.w600,
-              color: Colors.red.shade800,
-            ),
-          ),
-          const SizedBox(height: 4),
-          Text(
-            'Aucun responsable rattaché — choisissez un foyer',
-            style: TextStyle(fontSize: 12, color: Colors.red.shade700),
-          ),
-          const SizedBox(height: 8),
-          _familyPlacementSection(),
-          const SizedBox(height: 16),
-        ],
        Text(
          _placementTitle,
          style: TextStyle(
@ -1268,45 +1240,10 @@ class _AdminChildDetailModalState extends State<AdminChildDetailModal> {
      title: 'Choisir une famille',
    );
    if (selected == null || !mounted) return;
-
-    if (widget.isCreating) {
    setState(() {
      _selectedFamily = selected;
      _dirty = true;
    });
-      return;
-    }
-
-    // Édition orphelin (#157) : rattache immédiatement au foyer.
-    final enfantId = widget.enfant?.id;
-    if (enfantId == null || enfantId.isEmpty) return;
-
-    setState(() => _saving = true);
-    try {
-      for (final parentId in selected.parentUserIds) {
-        await UserService.attachEnfantToParent(
-          parentUserId: parentId,
-          enfantId: enfantId,
-        );
-      }
-      final refreshed = await UserService.getEnfant(enfantId);
-      if (!mounted) return;
-      setState(() {
-        _localParentLinks = refreshed.parentLinks;
-        _selectedFamily = selected;
-        _saving = false;
-      });
-      widget.onSaved?.call();
-      ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('Enfant rattaché au foyer')),
-      );
-    } catch (e) {
-      if (!mounted) return;
-      setState(() => _saving = false);
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(e.toString().replaceFirst('Exception: ', ''))),
-      );
-    }
  }

  Widget _familyPlacementSection() {
--- a/frontend/lib/widgets/admin/common/admin_enfant_user_card.dart
+++ b/frontend/lib/widgets/admin/common/admin_enfant_user_card.dart
@ -3,7 +3,6 @@ import 'package:p_tits_pas/models/enfant_admin_model.dart';
 import 'package:p_tits_pas/models/parent_child_summary.dart';
 import 'package:p_tits_pas/utils/date_display_utils.dart';
 import 'package:p_tits_pas/utils/enfant_status_utils.dart';
-import 'package:p_tits_pas/utils/enfant_vigilance.dart';
 import 'package:p_tits_pas/widgets/admin/common/admin_user_card.dart';

 List<String> enfantAdminSubtitleLines({
@ -37,8 +36,6 @@ class AdminEnfantUserCard extends StatelessWidget {
  final VoidCallback? onCardTap;
  final EdgeInsetsGeometry? margin;
  final EdgeInsetsGeometry? contentPadding;
-  final Color? borderColor;
-  final String? vigilanceTooltip;

  const AdminEnfantUserCard({
    super.key,
@ -49,8 +46,6 @@ class AdminEnfantUserCard extends StatelessWidget {
    this.onCardTap,
    this.margin,
    this.contentPadding,
-    this.borderColor,
-    this.vigilanceTooltip,
  });

  factory AdminEnfantUserCard.fromEnfant(
@ -60,13 +55,10 @@ class AdminEnfantUserCard extends StatelessWidget {
    VoidCallback? onCardTap,
    EdgeInsetsGeometry? margin,
    EdgeInsetsGeometry? contentPadding,
-    Color? borderColor,
-    String? vigilanceTooltip,
  }) {
    final parents = enfant.parentLinks
        .map((l) => l.parentName ?? 'Parent')
        .join(', ');
-    final orphan = enfantHasNoResponsable(enfant);
    return AdminEnfantUserCard(
      title: enfant.fullName,
      photoUrl: enfant.photoUrl,
@ -77,7 +69,6 @@ class AdminEnfantUserCard extends StatelessWidget {
        gender: enfant.gender,
        extra: [
          if (parents.isNotEmpty) 'Responsables : $parents',
-          if (orphan) 'Aucun responsable rattaché',
          ...extraSubtitleLines,
        ],
      ),
@ -85,10 +76,6 @@ class AdminEnfantUserCard extends StatelessWidget {
      onCardTap: onCardTap,
      margin: margin,
      contentPadding: contentPadding,
-      borderColor: borderColor ??
-          (orphan ? Colors.red.shade300 : null),
-      vigilanceTooltip: vigilanceTooltip ??
-          enfantSansResponsableVigilanceMessage(enfant),
    );
  }

@ -127,8 +114,6 @@ class AdminEnfantUserCard extends StatelessWidget {
      onCardTap: onCardTap,
      margin: margin,
      contentPadding: contentPadding,
-      borderColor: borderColor,
-      vigilanceTooltip: vigilanceTooltip,
    );
  }
 }
--- a/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_parent_edit_modal.dart
@ -283,7 +283,8 @@ class _AdminParentEditModalState extends State<AdminParentEditModal> {
      builder: (ctx) => AlertDialog(
        title: const Text('Détacher l\'enfant'),
        content: Text(
-          'Retirer ${child.fullName} de la fiche de ce parent ?',
+          'Retirer ${child.fullName} de la fiche de ce parent ?\n'
+          '(L\'enfant ne sera pas supprimé.)',
        ),
        actions: [
          TextButton(
--- a/frontend/lib/widgets/admin/common/admin_select_famille_modal.dart
+++ b/frontend/lib/widgets/admin/common/admin_select_famille_modal.dart
@ -4,12 +4,10 @@ import 'package:p_tits_pas/services/user_service.dart';
 import 'package:p_tits_pas/widgets/admin/common/admin_select_list_modal.dart';
 import 'package:p_tits_pas/widgets/admin/common/admin_user_card.dart';

-/// Foyer / famille sélectionnable pour rattacher un nouvel enfant (#132 / #157).
+/// Foyer / famille sélectionnable pour rattacher un nouvel enfant (#132).
 class AdminFamilleFoyer {
  /// Parent pivot pour `POST /enfants` (`parent_user_id`).
  final String pivotParentUserId;
-  /// Co-parent éventuel (rattachement foyer #157).
-  final String? coParentUserId;
  final String? numeroDossier;
  final String displayTitle;
  final List<String> parentNames;
@ -18,18 +16,9 @@ class AdminFamilleFoyer {
    required this.pivotParentUserId,
    required this.displayTitle,
    required this.parentNames,
-    this.coParentUserId,
    this.numeroDossier,
  });

-  /// Parents du foyer à lier à l’enfant (pivot puis co-parent).
-  List<String> get parentUserIds {
-    final ids = <String>[pivotParentUserId];
-    final co = (coParentUserId ?? '').trim();
-    if (co.isNotEmpty && co != pivotParentUserId) ids.add(co);
-    return ids;
-  }
-
  String get subtitle {
    final parts = <String>[];
    final dossier = (numeroDossier ?? '').trim();
@ -72,7 +61,6 @@ List<AdminFamilleFoyer> buildFamilleFoyers(List<ParentModel> parents) {
    foyers.add(
      AdminFamilleFoyer(
        pivotParentUserId: p.user.id,
-        coParentUserId: co?.id,
        numeroDossier: dossier.isNotEmpty ? dossier : null,
        displayTitle: title,
        parentNames: names,
--- a/frontend/lib/widgets/admin/enfant_management_widget.dart
+++ b/frontend/lib/widgets/admin/enfant_management_widget.dart
@ -72,14 +72,7 @@ class _EnfantManagementWidgetState extends State<EnfantManagementWidget> {
          normalizeEnfantStatus(e.status) ==
              normalizeEnfantStatus(widget.statusFilter);
      return matchesName && matchesStatus;
-    }).toList()
-      ..sort((a, b) {
-        // Orphelins (#157) en tête, puis ordre alphabétique.
-        final ao = a.hasNoResponsable ? 0 : 1;
-        final bo = b.hasNoResponsable ? 0 : 1;
-        if (ao != bo) return ao.compareTo(bo);
-        return a.fullName.toLowerCase().compareTo(b.fullName.toLowerCase());
-      });
+    }).toList();

    return UserList(
      isLoading: _isLoading,
--- a/frontend/lib/widgets/admin/parent_managmant_widget.dart
+++ b/frontend/lib/widgets/admin/parent_managmant_widget.dart
@ -80,7 +80,7 @@ class _ParentManagementWidgetState extends State<ParentManagementWidget> {
          onCardTap: () => _openParentDetails(parent),
          subtitleLines: [
            parent.user.email,
-            'Statut : ${_displayStatus(parent.user.statut)} | Enfants : ${ParentModel.foyerChildrenCount(parent, _parents)}',
+            'Statut : ${_displayStatus(parent.user.statut)} | Enfants : ${parent.children.isNotEmpty ? parent.children.length : parent.childrenCount}',
          ],
          actions: [
            IconButton(