feat(db): lot presentation + attachment sort order (schema v4→v5)

Expand LotType from {seed, plant} to six append-only forms (seed,
seedling, plant, tree, bulb, cutting) and add an optional Presentation
attribute (pot/tray/plug/bareRoot/rootBall) kept separate from quantity
so 'how many' and 'in what packaging' never conflate.

Add attachments.sortOrder so the cover photo is the lowest-ordered one,
enabling reordering from the full-screen viewer. Expand QuantityKind
with the new plant-aware forms.

Migrations are additive (v1→v5 all covered by migration_test); enum
values are stored by name and appended only, keeping CRDT sync safe.

apps/app_seeds/test/data/variety_detail_test.dart

@@ -201,6 +201,43 @@ void main() {
     ]);
   });
 
+  test('setPreferredPhoto moves a photo to the front (cover)', () async {
+    final id = await repo.addQuickVariety(label: 'Maize');
+    await repo.addPhoto(id, Uint8List.fromList([1]));
+    await repo.addPhoto(id, Uint8List.fromList([2]));
+    final p3 = await repo.addPhoto(id, Uint8List.fromList([3]));
+
+    // Insertion order until a cover is chosen.
+    expect(
+      (await repo.watchVariety(id).first)!.photos.map((p) => p.bytes.toList()),
+      [
+        [1],
+        [2],
+        [3],
+      ],
+    );
+
+    await repo.setPreferredPhoto(id, p3);
+
+    final photos = (await repo.watchVariety(id).first)!.photos;
+    expect(photos.map((p) => p.bytes.toList()), [
+      [3],
+      [1],
+      [2],
+    ]);
+  });
+
+  test('setPreferredPhoto changes the inventory avatar to the cover', () async {
+    final id = await repo.addQuickVariety(label: 'Maize');
+    await repo.addPhoto(id, Uint8List.fromList([1]));
+    final p2 = await repo.addPhoto(id, Uint8List.fromList([2]));
+
+    expect((await repo.watchInventory().first).single.photo!.toList(), [1]);
+
+    await repo.setPreferredPhoto(id, p2);
+    expect((await repo.watchInventory().first).single.photo!.toList(), [2]);
+  });
+
   test('watchInventory avatar refreshes when a photo is added later', () async {
     final id = await repo.addQuickVariety(label: 'Maize');
     final queue = StreamQueue(repo.watchInventory());

apps/app_seeds/test/db/migration_test.dart

@@ -11,28 +11,40 @@ void main() {
     verifier = SchemaVerifier(GeneratedHelper());
   });
 
-  test('freshly created database matches the exported schema v3', () async {
-    final schema = await verifier.schemaAt(3);
+  test('freshly created database matches the exported schema v5', () async {
+    final schema = await verifier.schemaAt(5);
     final db = AppDatabase(schema.newConnection());
-    await verifier.migrateAndValidate(db, 3);
+    await verifier.migrateAndValidate(db, 5);
     await db.close();
   });
 
-  test('upgrades v1 → v3 (adds Lot.type, then harvestMonth) and matches the '
-      'fresh schema', () async {
+  test('upgrades v1 → v5 (Lot.type, harvestMonth, presentation, '
+      'Attachment.sortOrder) and matches the fresh schema', () async {
     final connection = await verifier.startAt(1);
     final db = AppDatabase(connection);
-    await verifier.migrateAndValidate(db, 3);
+    await verifier.migrateAndValidate(db, 5);
     await db.close();
   });
 
-  test(
-    'upgrades v2 → v3 (adds Lot.harvestMonth) and matches the fresh schema',
-    () async {
-      final connection = await verifier.startAt(2);
-      final db = AppDatabase(connection);
-      await verifier.migrateAndValidate(db, 3);
-      await db.close();
-    },
-  );
+  test('upgrades v2 → v5 and matches the fresh schema', () async {
+    final connection = await verifier.startAt(2);
+    final db = AppDatabase(connection);
+    await verifier.migrateAndValidate(db, 5);
+    await db.close();
+  });
+
+  test('upgrades v3 → v5 and matches the fresh schema', () async {
+    final connection = await verifier.startAt(3);
+    final db = AppDatabase(connection);
+    await verifier.migrateAndValidate(db, 5);
+    await db.close();
+  });
+
+  test('upgrades v4 → v5 (adds Attachment.sortOrder) and matches the fresh '
+      'schema', () async {
+    final connection = await verifier.startAt(4);
+    final db = AppDatabase(connection);
+    await verifier.migrateAndValidate(db, 5);
+    await db.close();
+  });
 }

apps/app_seeds/test/db/schema/schema.dart

@@ -7,6 +7,8 @@ import 'package:drift/internal/migrations.dart';
 import 'schema_v1.dart' as v1;
 import 'schema_v2.dart' as v2;
 import 'schema_v3.dart' as v3;
+import 'schema_v4.dart' as v4;
+import 'schema_v5.dart' as v5;
 
 class GeneratedHelper implements SchemaInstantiationHelper {
   @override
@@ -18,10 +20,14 @@ class GeneratedHelper implements SchemaInstantiationHelper {
         return v2.DatabaseAtV2(db);
       case 3:
         return v3.DatabaseAtV3(db);
+      case 4:
+        return v4.DatabaseAtV4(db);
+      case 5:
+        return v5.DatabaseAtV5(db);
       default:
         throw MissingSchemaException(version, versions);
     }
   }
 
-  static const versions = const [1, 2, 3];
+  static const versions = const [1, 2, 3, 4, 5];
 }