feat(session): add armory shortcut and 50-shot preset

lib/features/session/session_setup_screen.dart

@@ -28,7 +28,7 @@ class _SessionSetupScreenState extends State<SessionSetupScreen> {
   DateTime _selectedDate = DateTime.now();
 
   static const List<int> _presetDistances = [10, 15, 25, 50, 100, 200];
-  static const List<int> _presetShots = [3, 5, 10, 15, 20, 30];
+  static const List<int> _presetShots = [3, 5, 10, 15, 20, 30, 50];
 
   @override
   void initState() {
@@ -53,6 +53,35 @@ class _SessionSetupScreenState extends State<SessionSetupScreen> {
     }
   }
 
+  Future<void> _openArmory() async {
+    final knownIds = _availableWeapons.map((w) => w.id).toSet();
+
+    await Navigator.push(
+      context,
+      MaterialPageRoute(builder: (_) => const WeaponListScreen()),
+    );
+    if (!mounted) return;
+
+    await _loadWeapons();
+    if (!mounted) return;
+
+    // Selectionne automatiquement l'arme qui vient d'etre ajoutee.
+    Weapon? added;
+    for (final weapon in _availableWeapons) {
+      if (!knownIds.contains(weapon.id)) {
+        added = weapon;
+        break;
+      }
+    }
+    if (added != null) {
+      final newWeapon = added;
+      setState(() {
+        _selectedWeapon = newWeapon;
+        _updateSettingsForWeapon(newWeapon);
+      });
+    }
+  }
+
   void _updateSettingsForWeapon(Weapon weapon) {
     _shotsPerTarget = weapon.magazineCapacity > 0 ? weapon.magazineCapacity : 5;
     _distance = (weapon.type == WeaponType.handgun) ? 25 : 50;
@@ -177,12 +206,7 @@ class _SessionSetupScreenState extends State<SessionSetupScreen> {
           ),
           const SizedBox(height: 20),
           ElevatedButton.icon(
-            onPressed: () {
+            onPressed: _openArmory,
-              Navigator.push(
-                context,
-                MaterialPageRoute(builder: (_) => const WeaponListScreen()),
-              ).then((_) => _loadWeapons());
-            },
             icon: const Icon(Icons.shield),
             label: const Text('Aller à l\'armurerie'),
           ),
@@ -236,7 +260,21 @@ class _SessionSetupScreenState extends State<SessionSetupScreen> {
                 }
               },
             ),
-            const SizedBox(height: 12),
+            const SizedBox(height: 4),
+            Align(
+              alignment: Alignment.centerLeft,
+              child: TextButton.icon(
+                onPressed: _openArmory,
+                icon: const Icon(Icons.add_circle_outline, size: 18),
+                label: const Text('Ajouter une nouvelle arme'),
+                style: TextButton.styleFrom(
+                  padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                  visualDensity: VisualDensity.compact,
+                  tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                ),
+              ),
+            ),
+            const SizedBox(height: 8),
             InkWell(
               onTap: _pickDate,
               borderRadius: BorderRadius.circular(12),