fix(#153): peaufiner cartes dossiers et recherche.

Cartes neutres avec accent icône, photo AM si dispo, hint court
et infobulle de critères sur la barre de recherche.

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

frontend/lib/models/dossier_list_item.dart

@@ -11,6 +11,8 @@ class DossierListItem {
   final String libelle;
   final List<String> emails;
   final String? statut;
+  /// Photo profil (AM) — affichée à la place de l’icône si présente.
+  final String? photoUrl;
 
   const DossierListItem({
     required this.type,
@@ -18,6 +20,7 @@ class DossierListItem {
     required this.libelle,
     this.emails = const [],
     this.statut,
+    this.photoUrl,
   });
 
   bool get isFamille => type == DossierListType.famille;
@@ -125,12 +128,14 @@ class DossierListItem {
         prenom: u.prenom,
         email: u.email,
       );
+      final photo = (u.photoUrl ?? '').trim();
       return DossierListItem(
         type: DossierListType.assistanteMaternelle,
         numeroDossier: e.key,
         libelle: name.isNotEmpty ? name : 'AM',
         emails: u.email.trim().isEmpty ? const [] : [u.email.trim()],
         statut: u.statut?.trim(),
+        photoUrl: photo.isEmpty ? null : photo,
       );
     }).toList();
   }

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

@@ -12,6 +12,10 @@ class AdminUserCard extends StatefulWidget {
   final Color? backgroundColor;
   final Color? titleColor;
   final Color? infoColor;
+  /// Fond du cercle avatar / icône (défaut lavande admin).
+  final Color? avatarBackgroundColor;
+  /// Couleur de l’icône fallback (défaut violet admin).
+  final Color? avatarIconColor;
   final String? vigilanceTooltip;
   final VoidCallback? onCardTap;
   final EdgeInsetsGeometry? margin;
@@ -28,6 +32,8 @@ class AdminUserCard extends StatefulWidget {
     this.backgroundColor,
     this.titleColor,
     this.infoColor,
+    this.avatarBackgroundColor,
+    this.avatarIconColor,
     this.vigilanceTooltip,
     this.onCardTap,
     this.margin,
@@ -159,8 +165,8 @@ class _AdminUserCardState extends State<AdminUserCard> {
 
   Widget _buildAvatar(String url) {
     const size = 28.0;
-    const bg = Color(0xFFEDE5FA);
-    const iconColor = Color(0xFF6B3FA0);
+    final bg = widget.avatarBackgroundColor ?? const Color(0xFFEDE5FA);
+    final iconColor = widget.avatarIconColor ?? const Color(0xFF6B3FA0);
 
     if (url.isEmpty) {
       return CircleAvatar(

frontend/lib/widgets/admin/dashboard_admin.dart

@@ -8,6 +8,8 @@ class DashboardUserManagementSubBar extends StatelessWidget {
   final ValueChanged<int> onSubTabChange;
   final TextEditingController searchController;
   final String searchHint;
+  /// Infobulle au survol de la barre de recherche (ex. critères de recherche).
+  final String? searchTooltip;
   final Widget? filterControl;
   final VoidCallback? onAddPressed;
   final String addLabel;
@@ -22,12 +24,16 @@ class DashboardUserManagementSubBar extends StatelessWidget {
     'Administrateurs',
   ];
 
+  /// Aligné sur la taille des libellés d’onglets.
+  static const double _searchFontSize = 13;
+
   const DashboardUserManagementSubBar({
     Key? key,
     required this.selectedSubIndex,
     required this.onSubTabChange,
     required this.searchController,
     required this.searchHint,
+    this.searchTooltip,
     this.filterControl,
     this.onAddPressed,
     this.addLabel = '+ Ajouter',
@@ -54,22 +60,7 @@ class DashboardUserManagementSubBar extends StatelessWidget {
             _buildSubNavItem(context, labels[i], i),
           ],
           const SizedBox(width: 36),
-          _pillField(
-            width: 320,
-            child: TextField(
-              controller: searchController,
-              decoration: InputDecoration(
-                hintText: searchHint,
-                prefixIcon: const Icon(Icons.search, size: 18),
-                border: InputBorder.none,
-                isDense: true,
-                contentPadding: const EdgeInsets.symmetric(
-                  horizontal: 10,
-                  vertical: 8,
-                ),
-              ),
-            ),
-          ),
+          _buildSearchField(),
           if (filterControl != null) ...[
             const SizedBox(width: 12),
             _pillField(width: 150, child: filterControl!),
@@ -81,6 +72,40 @@ class DashboardUserManagementSubBar extends StatelessWidget {
     );
   }
 
+  Widget _buildSearchField() {
+    final field = _pillField(
+      width: 320,
+      child: TextField(
+        controller: searchController,
+        style: const TextStyle(fontSize: _searchFontSize),
+        decoration: InputDecoration(
+          hintText: searchHint,
+          hintStyle: TextStyle(
+            fontSize: _searchFontSize,
+            fontStyle: FontStyle.normal,
+            fontWeight: FontWeight.normal,
+            color: Colors.black45,
+          ),
+          prefixIcon: const Icon(Icons.search, size: 18),
+          border: InputBorder.none,
+          isDense: true,
+          contentPadding: const EdgeInsets.symmetric(
+            horizontal: 10,
+            vertical: 8,
+          ),
+        ),
+      ),
+    );
+    final tip = (searchTooltip ?? '').trim();
+    if (tip.isEmpty) return field;
+    return Tooltip(
+      message: tip,
+      preferBelow: false,
+      waitDuration: const Duration(milliseconds: 400),
+      child: field,
+    );
+  }
+
   Widget _pillField({required double width, required Widget child}) {
     return Container(
       width: width,

frontend/lib/widgets/admin/dossier_list_card.dart

@@ -1,19 +1,20 @@
 import 'package:flutter/material.dart';
 import 'package:p_tits_pas/widgets/admin/common/admin_user_card.dart';
 
-/// Carte dossier unifiée (#153) — pending et liste complète.
+/// Carte dossier unifiée (#153) — fond neutre, accent couleur sur l’icône.
 class DossierListCard extends StatelessWidget {
   final String numeroDossier;
   final String namesLine;
   final bool isFamille;
   final VoidCallback onOpen;
+  /// Photo AM (si absente → icône fallback).
+  final String? photoUrl;
 
-  static const Color familleBg = Color(0xFFF3EEF8);
-  static const Color familleBorder = Color(0xFFB39DDB);
-  static const Color familleAccent = Color(0xFF7E57C2);
-  static const Color amBg = Color(0xFFE8F5F3);
-  static const Color amBorder = Color(0xFF80CBC4);
-  static const Color amAccent = Color(0xFF00897B);
+  /// Lavande — Famille / Parents.
+  static const Color familleAccent = Color(0xFFB289C9);
+
+  /// Menthe logo — AM.
+  static const Color amAccent = Color(0xFF5A9D94);
 
   const DossierListCard({
     super.key,
@@ -21,24 +22,24 @@ class DossierListCard extends StatelessWidget {
     required this.namesLine,
     required this.isFamille,
     required this.onOpen,
+    this.photoUrl,
   });
 
   @override
   Widget build(BuildContext context) {
-    final bg = isFamille ? familleBg : amBg;
-    final border = isFamille ? familleBorder : amBorder;
     final accent = isFamille ? familleAccent : amAccent;
     final num = numeroDossier.trim().isEmpty ? '–' : numeroDossier.trim();
     final names = namesLine.trim();
+    final avatar = (photoUrl ?? '').trim();
 
     return AdminUserCard(
       title: num,
       subtitleLines: names.isEmpty ? const [] : [names],
+      avatarUrl: !isFamille && avatar.isNotEmpty ? avatar : null,
       fallbackIcon:
-          isFamille ? Icons.family_restroom_outlined : Icons.person_outline,
-      backgroundColor: bg,
-      borderColor: border,
-      titleColor: accent,
+          isFamille ? Icons.family_restroom_outlined : Icons.face,
+      // N° = titre neutre (comme Parents / AM) ; accent = icône seule.
+      avatarIconColor: accent,
       infoColor: Colors.black87,
       onCardTap: onOpen,
       actions: [

frontend/lib/widgets/admin/dossiers_management_widget.dart

@@ -187,6 +187,7 @@ class _DossiersManagementWidgetState extends State<DossiersManagementWidget> {
                       numeroDossier: item.numeroDossier,
                       namesLine: item.namesLine,
                       isFamille: item.isFamille,
+                      photoUrl: item.photoUrl,
                       onOpen: () => _openDossier(item.numeroDossier),
                     );
                   },

frontend/lib/widgets/admin/pending_validation_widget.dart

@@ -290,6 +290,7 @@ class _PendingValidationWidgetState extends State<PendingValidationWidget> {
       numeroDossier: user.numeroDossier ?? '',
       namesLine: _amNamesLine(user),
       isFamille: false,
+      photoUrl: user.photoUrl,
       onOpen: () => _onOpenValidation(numeroDossier: user.numeroDossier),
     );
   }

frontend/lib/widgets/admin/user_management_panel.dart

@@ -89,7 +89,7 @@ class _UserManagementPanelState extends State<UserManagementPanel> {
   String _searchHintForTab() {
     switch (_subIndex) {
       case 0:
-        return 'Rechercher un dossier (n°, nom, email)…';
+        return 'Rechercher un dossier';
       case 1:
         return 'Rechercher un parent...';
       case 2:
@@ -105,6 +105,11 @@ class _UserManagementPanelState extends State<UserManagementPanel> {
     }
   }
 
+  String? _searchTooltipForTab() {
+    if (_subIndex != 0) return null;
+    return 'Recherche possible : n° de dossier, nom, prénom ou e-mail.';
+  }
+
   Widget? _subBarFilterControl() {
     // Parents
     if (_subIndex == 1) {
@@ -285,6 +290,7 @@ class _UserManagementPanelState extends State<UserManagementPanel> {
           onSubTabChange: _onSubTabChange,
           searchController: _searchController,
           searchHint: _searchHintForTab(),
+          searchTooltip: _searchTooltipForTab(),
           filterControl: _subBarFilterControl(),
           // Pas de « Créer » sur l’onglet Dossiers (#153).
           onAddPressed: _isDossiersTab ? null : _handleAddPressed,