feat(#142): ouvrir la modale au clic sur les cartes du dashboard admin.

Unifie le comportement des listes Parents, AM, Enfants, Gestionnaires, Admins et À valider avec le bouton d'action au survol.

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

frontend/lib/widgets/admin/admin_management_widget.dart

@@ -122,6 +122,7 @@ class _AdminManagementWidgetState extends State<AdminManagementWidget> {
           fallbackIcon: isSuperAdmin
               ? Icons.verified_user_outlined
               : Icons.manage_accounts_outlined,
+          onCardTap: () => _openAdminEditDialog(user),
           subtitleLines: [
             user.email,
             'Téléphone : ${user.telephone?.trim().isNotEmpty == true ? formatPhoneForDisplay(user.telephone!) : 'Non renseigné'}',

frontend/lib/widgets/admin/assistante_maternelle_management_widget.dart

@@ -83,6 +83,7 @@ class _AssistanteMaternelleManagementWidgetState
           avatarUrl: assistante.user.photoUrl,
           fallbackIcon: Icons.face,
           vigilanceTooltip: vigilance,
+          onCardTap: () => _openAssistanteDetails(assistante),
           subtitleLines: [
             assistante.user.email,
             'Zone : ${assistante.residenceCity ?? 'N/A'} | Capacité : ${assistante.maxChildren ?? 0}',

frontend/lib/widgets/admin/common/admin_enfant_user_card.dart

@@ -33,6 +33,7 @@ class AdminEnfantUserCard extends StatelessWidget {
   final String? photoUrl;
   final List<String> subtitleLines;
   final List<Widget> actions;
+  final VoidCallback? onCardTap;
 
   const AdminEnfantUserCard({
     super.key,
@@ -40,12 +41,14 @@ class AdminEnfantUserCard extends StatelessWidget {
     this.photoUrl,
     required this.subtitleLines,
     this.actions = const [],
+    this.onCardTap,
   });
 
   factory AdminEnfantUserCard.fromEnfant(
     EnfantAdminModel enfant, {
     List<String> extraSubtitleLines = const [],
     List<Widget> actions = const [],
+    VoidCallback? onCardTap,
   }) {
     final parents = enfant.parentLinks
         .map((l) => l.parentName ?? 'Parent')
@@ -64,6 +67,7 @@ class AdminEnfantUserCard extends StatelessWidget {
         ],
       ),
       actions: actions,
+      onCardTap: onCardTap,
     );
   }
 
@@ -71,6 +75,7 @@ class AdminEnfantUserCard extends StatelessWidget {
     ParentChildSummary child, {
     List<String> extraSubtitleLines = const [],
     List<Widget> actions = const [],
+    VoidCallback? onCardTap,
   }) {
     return AdminEnfantUserCard(
       title: child.fullName,
@@ -82,6 +87,7 @@ class AdminEnfantUserCard extends StatelessWidget {
         extra: extraSubtitleLines,
       ),
       actions: actions,
+      onCardTap: onCardTap,
     );
   }
 
@@ -93,6 +99,7 @@ class AdminEnfantUserCard extends StatelessWidget {
       avatarUrl: photoUrl,
       subtitleLines: subtitleLines,
       actions: actions,
+      onCardTap: onCardTap,
     );
   }
 }

frontend/lib/widgets/admin/common/admin_user_card.dart

@@ -13,6 +13,7 @@ class AdminUserCard extends StatefulWidget {
   final Color? titleColor;
   final Color? infoColor;
   final String? vigilanceTooltip;
+  final VoidCallback? onCardTap;
 
   const AdminUserCard({
     super.key,
@@ -26,6 +27,7 @@ class AdminUserCard extends StatefulWidget {
     this.titleColor,
     this.infoColor,
     this.vigilanceTooltip,
+    this.onCardTap,
   });
 
   @override
@@ -46,11 +48,14 @@ class _AdminUserCardState extends State<AdminUserCard> {
     return MouseRegion(
       onEnter: (_) => setState(() => _isHovered = true),
       onExit: (_) => setState(() => _isHovered = false),
+      cursor: widget.onCardTap != null
+          ? SystemMouseCursors.click
+          : MouseCursor.defer,
       child: Material(
         color: Colors.transparent,
         borderRadius: BorderRadius.circular(10),
         child: InkWell(
-          onTap: () {},
+          onTap: widget.onCardTap,
           borderRadius: BorderRadius.circular(10),
           hoverColor: const Color(0x149CC5C0),
           child: Card(

frontend/lib/widgets/admin/enfant_management_widget.dart

@@ -84,6 +84,7 @@ class _EnfantManagementWidgetState extends State<EnfantManagementWidget> {
         final enfant = filtered[index];
         return AdminEnfantUserCard.fromEnfant(
           enfant,
+          onCardTap: () => _openEnfant(enfant),
           actions: [
             IconButton(
               icon: const Icon(Icons.visibility_outlined),

frontend/lib/widgets/admin/gestionnaire_management_widget.dart

@@ -88,6 +88,7 @@ class _GestionnaireManagementWidgetState
           title: user.fullName,
           fallbackIcon: Icons.assignment_ind_outlined,
           avatarUrl: user.photoUrl,
+          onCardTap: () => _openGestionnaireEditDialog(user),
           subtitleLines: [
             user.email,
             'Statut : ${user.statut ?? 'Inconnu'}',

frontend/lib/widgets/admin/parent_managmant_widget.dart

@@ -77,6 +77,7 @@ class _ParentManagementWidgetState extends State<ParentManagementWidget> {
           title: parent.user.fullName,
           fallbackIcon: Icons.supervisor_account_outlined,
           avatarUrl: parent.user.photoUrl,
+          onCardTap: () => _openParentDetails(parent),
           subtitleLines: [
             parent.user.email,
             'Statut : ${_displayStatus(parent.user.statut)} | Enfants : ${parent.children.isNotEmpty ? parent.children.length : parent.childrenCount}',

frontend/lib/widgets/admin/pending_validation_widget.dart

@@ -321,11 +321,12 @@ class _PendingValidationRowState extends State<_PendingValidationRow> {
     return MouseRegion(
       onEnter: (_) => setState(() => _isHovered = true),
       onExit: (_) => setState(() => _isHovered = false),
+      cursor: SystemMouseCursors.click,
       child: Material(
         color: Colors.transparent,
         borderRadius: BorderRadius.circular(10),
         child: InkWell(
-          onTap: () {},
+          onTap: widget.onOpen,
           borderRadius: BorderRadius.circular(10),
           hoverColor: const Color(0x149CC5C0),
           child: Card(