feat(ui): écran Historique des séances

Ajoute l'écran d'historique des séances (presentation/history_screen.dart),
avec les ajustements application/domaine/repositories nécessaires et la
navigation depuis l'accueil. Complète le dernier écran du périmètre UI.
flutter analyze propre, 18/18 tests verts, build APK debug validé.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/presentation/workout_execution_screen.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 
 import '../application/application.dart';
 import '../domain/domain.dart';
+import 'history_screen.dart';
 
 enum WorkoutExecutionMode { active, rest, paused, finished }
 
@@ -13,12 +14,16 @@ final class WorkoutExecutionScreen extends StatefulWidget {
     required this.initialSession,
     required this.activeUseCases,
     required this.closeUseCase,
+    required this.historyUseCases,
+    required this.workoutTemplateUseCases,
     super.key,
   });
 
   final ActiveWorkoutSession initialSession;
   final ActiveWorkoutSessionUseCases activeUseCases;
   final CloseWorkoutSessionUseCase closeUseCase;
+  final WorkoutHistoryUseCases historyUseCases;
+  final WorkoutTemplateUseCases workoutTemplateUseCases;
 
   @override
   State<WorkoutExecutionScreen> createState() => _WorkoutExecutionScreenState();
@@ -30,6 +35,7 @@ final class _WorkoutExecutionScreenState extends State<WorkoutExecutionScreen> {
   late WorkoutExecutionMode _mode;
   Timer? _ticker;
   Timer? _restTicker;
+  WorkoutHistory? _completedHistory;
   var _reps = 0;
   final _scoreController = TextEditingController();
   var _remainingRestSeconds = 0;
@@ -232,9 +238,12 @@ final class _WorkoutExecutionScreenState extends State<WorkoutExecutionScreen> {
           const SizedBox(height: 12),
           Text('Temps total : ${_formatDuration(elapsed)}'),
           const SizedBox(height: 24),
-          OutlinedButton(onPressed: () {}, child: const Text('Voir le détail')),
           OutlinedButton(
-            onPressed: () {},
+            onPressed: _completedHistory == null ? null : _openHistoryDetail,
+            child: const Text('Voir le détail'),
+          ),
+          OutlinedButton(
+            onPressed: _completedHistory == null ? null : _restartCompleted,
             child: const Text('Relancer cette séance'),
           ),
           FilledButton(
@@ -367,7 +376,7 @@ final class _WorkoutExecutionScreenState extends State<WorkoutExecutionScreen> {
 
   Future<void> _complete() async {
     _session = await widget.activeUseCases.complete(_session.metadata.id);
-    await widget.closeUseCase.close(
+    _completedHistory = await widget.closeUseCase.close(
       sessionId: _session.metadata.id,
       nameSnapshot: _plan.name,
       completed: true,
@@ -375,6 +384,56 @@ final class _WorkoutExecutionScreenState extends State<WorkoutExecutionScreen> {
     if (!mounted) return;
     setState(() => _mode = WorkoutExecutionMode.finished);
   }
+
+  Future<void> _openHistoryDetail() async {
+    final history = _completedHistory;
+    if (history == null) return;
+    await Navigator.of(context).push(
+      MaterialPageRoute(
+        builder: (context) => HistoryDetailScreen(
+          history: history,
+          historyUseCases: widget.historyUseCases,
+          workoutTemplateUseCases: widget.workoutTemplateUseCases,
+          activeUseCases: widget.activeUseCases,
+          closeUseCase: widget.closeUseCase,
+        ),
+      ),
+    );
+  }
+
+  Future<void> _restartCompleted() async {
+    final history = _completedHistory;
+    if (history == null) return;
+    ActiveWorkoutSession session;
+    final sourceId = history.sourceWorkoutTemplateId;
+    if (sourceId != null &&
+        await widget.workoutTemplateUseCases.findById(sourceId) != null) {
+      session = await widget.activeUseCases.startFromTemplate(sourceId);
+    } else {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(
+            content: Text(
+              "La séance originale n'existe plus. Une copie va être utilisée.",
+            ),
+          ),
+        );
+      }
+      session = await widget.activeUseCases.startFromHistory(history);
+    }
+    if (!mounted) return;
+    await Navigator.of(context).pushReplacement(
+      MaterialPageRoute(
+        builder: (context) => WorkoutExecutionScreen(
+          initialSession: session,
+          activeUseCases: widget.activeUseCases,
+          closeUseCase: widget.closeUseCase,
+          historyUseCases: widget.historyUseCases,
+          workoutTemplateUseCases: widget.workoutTemplateUseCases,
+        ),
+      ),
+    );
+  }
 }
 
 final class SetMeasureInput extends StatelessWidget {