feat(train): a weight vest among the equipment (ADR 0034, D7)

A vest keeps its weight and, if adjustable, how far it goes. At a place
that has one, a set of bodyweight work offers it beside the weight, a
tap writing its weight in.

Whats-New: Add a weight vest to your equipment, and put its weight on a bodyweight set with a tap.
Whats-New-De: Trage eine Gewichtsweste bei deiner Ausrüstung ein und übernimm ihr Gewicht mit einem Tipp in einen Satz mit Körpergewicht.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/train/halkyon_train_flutter/test/feature/equipment/place_payload_test.dart

@@ -97,4 +97,33 @@ void main() {
     expect(decodePlace(_bytes([1, 2])), isNull);
     expect(decodePlace(ByteData(0)), isNull);
   });
+
+  test('a weight vest keeps its weight, and how far an adjustable one goes '
+      '(ADR 0034, D7)', () {
+    const place = PlaceContent(
+      name: 'Home',
+      items: [
+        EquipmentItem(
+          kind: EquipmentKind.weightVest,
+          grams: 6000,
+          gramsUpTo: 10000,
+        ),
+        EquipmentItem(kind: EquipmentKind.weightVest, grams: 8000),
+      ],
+    );
+    expect(decodePlace(encodePlace(place)), place);
+  });
+
+  test("an upper weight that isn't above the vest's weight is left out", () {
+    final place = decodePlace(
+      _bytes({
+        'schemaVersion': 1,
+        'name': 'Home',
+        'items': [
+          {'kind': 'weightVest', 'count': 1, 'grams': 8000, 'gramsUpTo': 8000},
+        ],
+      }),
+    );
+    expect(place!.items.single.gramsUpTo, isNull);
+  });
 }

apps/train/halkyon_train_flutter/test/feature/strength/vest_chip_test.dart

@@ -0,0 +1,52 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:halkyon_train_flutter/l10n/app_localizations.dart';
+import 'package:halkyon_train_flutter/src/feature/equipment/model/equipment.dart';
+import 'package:halkyon_train_flutter/src/feature/strength/widget/vest_chip.dart';
+import 'package:material_ui/material_ui.dart';
+
+/// The vest offered at a set of the body (ADR 0034, D7).
+void main() {
+  Future<void> pump(
+    WidgetTester tester,
+    EquipmentItem vest,
+    void Function(int) onWear,
+  ) => tester.pumpWidget(
+    MaterialApp(
+      locale: const Locale('en'),
+      localizationsDelegates: AppLocalizations.localizationsDelegates,
+      supportedLocales: AppLocalizations.supportedLocales,
+      home: Scaffold(
+        body: VestChip(vest: vest, onWear: onWear),
+      ),
+    ),
+  );
+
+  testWidgets('an adjustable vest shows its range and gives its lightest', (
+    tester,
+  ) async {
+    int? worn;
+    await pump(
+      tester,
+      const EquipmentItem(
+        kind: EquipmentKind.weightVest,
+        grams: 6000,
+        gramsUpTo: 10000,
+      ),
+      (grams) => worn = grams,
+    );
+
+    expect(find.text('Weight vest, 6–10 kg'), findsOneWidget);
+    await tester.tap(find.byType(ActionChip));
+    expect(worn, 6000);
+  });
+
+  testWidgets('a vest of one weight shows that weight', (tester) async {
+    await pump(
+      tester,
+      const EquipmentItem(kind: EquipmentKind.weightVest, grams: 8000),
+      (_) {},
+    );
+
+    expect(find.text('Weight vest, 8 kg'), findsOneWidget);
+  });
+}

apps/train/halkyon_train_flutter/test/feature/strength/weight_up_test.dart

@@ -74,4 +74,18 @@ void main() {
     expect(series.last.change, const PlateChange(off: [], on: [10000]));
     expect(plateSeries(ExerciseLoad.dumbbellPair, [7000], home), isNull);
   });
+
+  test(
+    'a place offers its weight vest to what the body lifts (ADR 0034, D7)',
+    () {
+      const vest = EquipmentItem(
+        kind: EquipmentKind.weightVest,
+        grams: 6000,
+        gramsUpTo: 10000,
+      );
+      expect(vestAt(const PlaceContent(name: 'Home', items: [vest])), vest);
+      expect(vestAt(home), isNull);
+      expect(vestAt(null), isNull);
+    },
+  );
 }