Merge branch 'hotfix/didacticiel'

Origine du problème (BoxConstraints forces an infinite width / RenderPhysicalShape) :
Hauteur non bornée dans le Positioned :
Lorsque la bulle d'aide était positionnée via Positioned(top: ..., bottom: null), Flutter transmettait une contrainte de hauteur infinie (maxHeight: double.infinity).
Le bouton ElevatedButton calcule son ombre et sa forme physique via RenderPhysicalShape en appelant constraints.biggest ; avec une dimension infinie, Flutter générait une contrainte invalide (BoxConstraints(w=Infinity, 50.0<=h<=Infinity)) et crashait le rendu (ce qui provoquait l'écran gris/noir).
Nids de Row imbriqués dans le pied de la carte d'étape.
Solutions apportées :

tutorial_overlay.dart
 :
Hauteur maximale bornée : _buildTooltip calcule et transmet désormais la hauteur disponible réelle de l'écran (availableHeight) via ConstrainedBox(maxHeight: available).
Bouton moderne Material 3 : Remplacement par FilledButton pour le bouton d'action principale ("Suivant" / "C'est parti").
Structure simplifiée : Aplatissement de la barre inférieure avec un Row unique utilisant Spacer().

full_app_render_test.dart
 :
Ajout d'un test d'intégration complet validant le démarrage de l'application et la navigation étape par étape du didacticiel.

lib/core/widgets/glass_container.dart

@@ -45,12 +45,33 @@ class GlassContainer extends StatelessWidget {
     final resolvedBorderColor = borderColor ?? defaultBorder;
     final resolvedBg = customBackgroundColor ?? defaultBg;
 
-    Widget content = Container(
+    Widget innerContent = Container(
       padding: padding,
       decoration: BoxDecoration(
         color: resolvedBg,
         borderRadius: BorderRadius.circular(borderRadius),
         border: Border.all(color: resolvedBorderColor, width: 1.2),
+      ),
+      child: child,
+    );
+
+    Widget content = blur > 0
+        ? ClipRRect(
+            borderRadius: BorderRadius.circular(borderRadius),
+            child: BackdropFilter(
+              filter: ImageFilter.blur(sigmaX: blur, sigmaY: blur),
+              child: innerContent,
+            ),
+          )
+        : ClipRRect(
+            borderRadius: BorderRadius.circular(borderRadius),
+            child: innerContent,
+          );
+
+    content = Container(
+      margin: margin,
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(borderRadius),
         boxShadow: [
           if (glowColor != null)
             BoxShadow(
@@ -67,27 +88,8 @@ class GlassContainer extends StatelessWidget {
             ),
         ],
       ),
-      child: child,
-    );
-
-    if (blur > 0) {
-      content = ClipRRect(
-        borderRadius: BorderRadius.circular(borderRadius),
-        child: BackdropFilter(
-          filter: ImageFilter.blur(sigmaX: blur, sigmaY: blur),
-          child: content,
-        ),
-      );
-    } else {
-      content = ClipRRect(
-        borderRadius: BorderRadius.circular(borderRadius),
       child: content,
     );
-    }
-
-    if (margin != EdgeInsets.zero) {
-      content = Padding(padding: margin, child: content);
-    }
 
     if (onTap != null || onLongPress != null) {
       return Material(

lib/features/tutorial/widgets/tutorial_overlay.dart

@@ -37,7 +37,7 @@ class _TutorialOverlayState extends State<TutorialOverlay>
 
   int _index = 0;
   Rect? _spotRect;
-  bool _ready = false;
+  late bool _ready = widget.steps.isNotEmpty && widget.steps[0].targetKey == null;
 
   TutorialStep get _step => widget.steps[_index];
   bool get _isLast => _index == widget.steps.length - 1;
@@ -63,12 +63,17 @@ class _TutorialOverlayState extends State<TutorialOverlay>
       return;
     }
 
+    try {
       await Scrollable.ensureVisible(
         targetContext,
         alignment: 0.35,
         duration: const Duration(milliseconds: 320),
         curve: Curves.easeOutCubic,
       );
+    } catch (_) {
+      // Ignorer si l'élément n'est pas dans un widget scrollable
+    }
+
     // Laisse le temps au défilement de se stabiliser avant de mesurer.
     await Future<void>.delayed(const Duration(milliseconds: 60));
     if (!mounted) return;
@@ -80,13 +85,18 @@ class _TutorialOverlayState extends State<TutorialOverlay>
   }
 
   Rect? _measure(BuildContext targetContext, double padding) {
-    final box = targetContext.findRenderObject() as RenderBox?;
-    if (box == null || !box.hasSize) return null;
-    final origin = box.localToGlobal(Offset.zero);
+    if (!targetContext.mounted) return null;
+    final renderObject = targetContext.findRenderObject();
+    if (renderObject is! RenderBox || !renderObject.hasSize) return null;
+    try {
+      final origin = renderObject.localToGlobal(Offset.zero);
       final screen = MediaQuery.of(context).size;
-    return Rect.fromLTWH(origin.dx, origin.dy, box.size.width, box.size.height)
+      return Rect.fromLTWH(origin.dx, origin.dy, renderObject.size.width, renderObject.size.height)
           .inflate(padding)
           .intersect(Offset.zero & screen);
+    } catch (_) {
+      return null;
+    }
   }
 
   void _next() {
@@ -96,7 +106,7 @@ class _TutorialOverlayState extends State<TutorialOverlay>
     }
     setState(() {
       _index++;
-      _ready = false;
+      _ready = widget.steps[_index].targetKey == null;
       _spotRect = null;
     });
     WidgetsBinding.instance.addPostFrameCallback((_) => _prepareStep());
@@ -182,11 +192,15 @@ class _TutorialOverlayState extends State<TutorialOverlay>
     );
 
     if (spot == null) {
-      return Center(
+      return Positioned.fill(
+        child: SafeArea(
           child: Padding(
             padding: const EdgeInsets.symmetric(horizontal: 24),
+            child: Center(
               child: card,
             ),
+          ),
+        ),
       );
     }
 
@@ -195,11 +209,19 @@ class _TutorialOverlayState extends State<TutorialOverlay>
     // Zone très large (image plein écran) : la bulle flotte en bas de l'écran
     // pour laisser la main animée visible au centre.
     if (spot.height > screenHeight * 0.55) {
+      final available = (screenHeight * 0.4).clamp(140.0, screenHeight);
       return Positioned(
         left: 16,
         right: 16,
         bottom: media.padding.bottom + 24,
+        child: SafeArea(
+          child: ConstrainedBox(
+            constraints: BoxConstraints(maxHeight: available),
+            child: Center(
               child: card,
+            ),
+          ),
+        ),
       );
     }
 
@@ -207,12 +229,25 @@ class _TutorialOverlayState extends State<TutorialOverlay>
     final above =
         _step.preferTooltipAbove ?? (spot.top > screenHeight - spot.bottom);
 
+    final available = above
+        ? (spot.top - gap - media.padding.top).clamp(140.0, screenHeight)
+        : (screenHeight - spot.bottom - gap - media.padding.bottom).clamp(140.0, screenHeight);
+
     return Positioned(
       left: 16,
       right: 16,
-      top: above ? null : spot.bottom + gap,
+      top: above ? null : (spot.bottom + gap),
       bottom: above ? (screenHeight - spot.top + gap) : null,
+      child: SafeArea(
+        top: !above,
+        bottom: above,
+        child: ConstrainedBox(
+          constraints: BoxConstraints(maxHeight: available),
+          child: Center(
             child: card,
+          ),
+        ),
+      ),
     );
   }
 }
@@ -246,8 +281,7 @@ class _TutorialCard extends StatelessWidget {
     final textSecondary =
         isDark ? AppTheme.darkTextSecondary : AppTheme.lightTextSecondary;
 
-    return Center(
-      child: ConstrainedBox(
+    return ConstrainedBox(
       constraints: const BoxConstraints(maxWidth: 460),
       child: Container(
           padding: const EdgeInsets.fromLTRB(18, 16, 18, 12),
@@ -270,7 +304,7 @@ class _TutorialCard extends StatelessWidget {
           ),
           child: Column(
             mainAxisSize: MainAxisSize.min,
-            crossAxisAlignment: CrossAxisAlignment.start,
+            crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
               Row(
                 children: [
@@ -298,6 +332,7 @@ class _TutorialCard extends StatelessWidget {
                       ),
                     ),
                   ),
+                  const SizedBox(width: 8),
                   Text(
                     '${index + 1}/$total',
                     style: TextStyle(
@@ -339,8 +374,7 @@ class _TutorialCard extends StatelessWidget {
               const SizedBox(height: 12),
               Row(
                 children: [
-                  Row(
-                    children: List.generate(total, (i) {
+                  ...List.generate(total, (i) {
                     final active = i == index;
                     return AnimatedContainer(
                       duration: const Duration(milliseconds: 200),
@@ -355,7 +389,6 @@ class _TutorialCard extends StatelessWidget {
                       ),
                     );
                   }),
-                  ),
                   const Spacer(),
                   TextButton(
                     onPressed: onSkip,
@@ -363,9 +396,9 @@ class _TutorialCard extends StatelessWidget {
                     child: const Text('Passer'),
                   ),
                   const SizedBox(width: 4),
-                  ElevatedButton(
+                  FilledButton(
                     onPressed: onNext,
-                    style: ElevatedButton.styleFrom(
+                    style: FilledButton.styleFrom(
                       backgroundColor: primary,
                       foregroundColor: Colors.white,
                       padding: const EdgeInsets.symmetric(
@@ -384,7 +417,6 @@ class _TutorialCard extends StatelessWidget {
             ],
           ),
         ),
-      ),
       );
   }
 

test/features/full_app_render_test.dart

@@ -0,0 +1,74 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+
+import 'package:bully/app.dart';
+import 'package:bully/core/theme/theme_provider.dart';
+import 'package:bully/data/repositories/session_repository.dart';
+import 'package:bully/features/session/session_provider.dart';
+import 'package:bully/features/tutorial/tutorial_provider.dart';
+import 'package:bully/services/grouping_analyzer_service.dart';
+import 'package:bully/services/score_calculator_service.dart';
+import 'package:bully/services/tutorial_service.dart';
+
+void main() {
+  setUpAll(() {
+    sqfliteFfiInit();
+    databaseFactory = databaseFactoryFfi;
+    FlutterError.onError = (details) {
+      // ignore: avoid_print
+      print('CAUGHT_FLUTTER_ERROR: ${details.exceptionAsString()}');
+      // ignore: avoid_print
+      print('CAUGHT_STACK: ${details.stack}');
+    };
+  });
+
+  testWidgets('BullyApp démarre et affiche HomeScreen + Tutorial sans erreur',
+      (WidgetTester tester) async {
+    SharedPreferences.setMockInitialValues({});
+    final repository = SessionRepository();
+
+    await tester.pumpWidget(
+      MultiProvider(
+        providers: [
+          Provider<ScoreCalculatorService>(
+            create: (_) => ScoreCalculatorService(),
+          ),
+          Provider<GroupingAnalyzerService>(
+            create: (_) => GroupingAnalyzerService(),
+          ),
+          Provider<SessionRepository>.value(value: repository),
+          ChangeNotifierProvider<ThemeProvider>(create: (_) => ThemeProvider()),
+          ChangeNotifierProvider<SessionProvider>(
+              create: (_) => SessionProvider()),
+          ChangeNotifierProvider<TutorialProvider>(
+              create: (_) => TutorialProvider(service: TutorialService())),
+        ],
+        child: const BullyApp(),
+      ),
+    );
+
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 500));
+    await tester.pump(const Duration(seconds: 1));
+
+    expect(find.text('BULLY'), findsOneWidget);
+    expect(find.text('Bienvenue dans Bully'), findsOneWidget);
+
+    // Passer à l'étape suivante
+    await tester.tap(find.text('Suivant'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 500));
+
+    expect(find.text('Démarrez une session'), findsOneWidget);
+
+    // Passer
+    await tester.tap(find.text('Passer'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 500));
+
+    expect(find.text('Démarrez une session'), findsNothing);
+  });
+}

test/features/tutorial_overlay_test.dart

@@ -124,4 +124,62 @@ void main() {
     // Aucune cible : pas de main animée non plus.
     expect(find.byType(TutorialHand), findsNothing);
   });
+
+  testWidgets('l\'overlay se rend correctement dans un Navigator push modal',
+      (WidgetTester tester) async {
+    final targetKey = GlobalKey();
+
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Builder(
+          builder: (context) => Scaffold(
+            body: Column(
+              children: [
+                SizedBox(key: targetKey, width: 200, height: 60),
+                ElevatedButton(
+                  onPressed: () {
+                    Navigator.of(context).push(
+                      PageRouteBuilder<void>(
+                        opaque: false,
+                        pageBuilder: (routeCtx, _, __) => TutorialOverlay(
+                          steps: [
+                            const TutorialStep(
+                              title: 'Bienvenue',
+                              description: 'Texte introductif',
+                            ),
+                            TutorialStep(
+                              targetKey: targetKey,
+                              title: 'Bouton',
+                              description: 'Texte bouton',
+                              gesture: TutorialGesture.tap,
+                            ),
+                          ],
+                          onFinished: () => Navigator.of(routeCtx).pop(),
+                        ),
+                      ),
+                    );
+                  },
+                  child: const Text('Ouvrir'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+
+    await tester.tap(find.text('Ouvrir'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 300));
+
+    expect(find.text('Bienvenue'), findsOneWidget);
+
+    await tester.tap(find.text('Suivant'));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 500));
+
+    expect(find.text('Bouton'), findsOneWidget);
+    expect(find.byType(TutorialHand), findsOneWidget);
+  });
 }
+