feat(inventory): editable vernacular (common) names

The "also known as" names were read-only; now they can be added and removed:
- Repository: addVernacularName + removeVernacularName (soft delete);
  VarietyDetail.vernacularNames carries ids (new VernacularName model).
- Cubit: addVernacularName / removeVernacularName.
- Detail: deletable name chips + an "Add name" chip opening a small dialog;
  the section is always visible so names can be added when empty.

Tests: repo add/remove + widget add/remove. 44 green.

apps/app_seeds/lib/data/variety_repository.dart

@@ -92,6 +92,24 @@ class VarietyLot extends Equatable {
   ];
 }
 
+/// One vernacular (common) name of a variety.
+class VernacularName extends Equatable {
+  const VernacularName({
+    required this.id,
+    required this.name,
+    this.language,
+    this.region,
+  });
+
+  final String id;
+  final String name;
+  final String? language;
+  final String? region;
+
+  @override
+  List<Object?> get props => [id, name, language, region];
+}
+
 /// The full detail of one variety (identity + its lots, names and first photo).
 class VarietyDetail extends Equatable {
   const VarietyDetail({
@@ -113,7 +131,7 @@ class VarietyDetail extends Equatable {
   final String? speciesId;
   final String? scientificName;
   final List<VarietyLot> lots;
-  final List<String> vernacularNames;
+  final List<VernacularName> vernacularNames;
   final Uint8List? photo;
 
   @override
@@ -373,7 +391,16 @@ class VarietyRepository {
       speciesId: v.speciesId,
       scientificName: scientificName,
       lots: lots.map((l) => _toLot(l, testsByLot[l.id] ?? const [])).toList(),
-      vernacularNames: names.map((n) => n.name).toList(),
+      vernacularNames: names
+          .map(
+            (n) => VernacularName(
+              id: n.id,
+              name: n.name,
+              language: n.language,
+              region: n.region,
+            ),
+          )
+          .toList(),
       photo: photos.isEmpty ? null : photos.first.bytes,
     );
   }
@@ -491,6 +518,46 @@ class VarietyRepository {
     );
   }
 
+  /// Adds a vernacular (common) name to a variety. Returns the new row id.
+  Future<String> addVernacularName(
+    String varietyId,
+    String name, {
+    String? language,
+    String? region,
+  }) async {
+    final (created, updated) = _stamp();
+    final id = idGen.newId();
+    await _db
+        .into(_db.varietyVernacularNames)
+        .insert(
+          VarietyVernacularNamesCompanion.insert(
+            id: id,
+            varietyId: varietyId,
+            name: name,
+            createdAt: created,
+            updatedAt: updated,
+            lastAuthor: nodeId,
+            language: Value(language),
+            region: Value(region),
+          ),
+        );
+    return id;
+  }
+
+  /// Soft-deletes a vernacular name (tombstone).
+  Future<void> removeVernacularName(String nameId) async {
+    final (_, updated) = _stamp();
+    await (_db.update(
+      _db.varietyVernacularNames,
+    )..where((n) => n.id.equals(nameId))).write(
+      VarietyVernacularNamesCompanion(
+        isDeleted: const Value(true),
+        updatedAt: Value(updated),
+        lastAuthor: Value(nodeId),
+      ),
+    );
+  }
+
   /// Soft-deletes a variety (tombstone); it disappears from the inventory but
   /// the row survives for correct CRDT merges later.
   Future<void> softDeleteVariety(String id) async {

apps/app_seeds/lib/i18n/en.i18n.json

@@ -30,6 +30,7 @@
     "lots": "Lots",
     "noLots": "No lots yet.",
     "names": "Also known as",
+    "addName": "Add name",
     "notes": "Notes",
     "addLot": "Add lot",
     "editLot": "Edit lot",

apps/app_seeds/lib/i18n/es.i18n.json

@@ -30,6 +30,7 @@
     "lots": "Lotes",
     "noLots": "Aún no hay lotes.",
     "names": "También conocida como",
+    "addName": "Añadir nombre",
     "notes": "Notas",
     "addLot": "Añadir lote",
     "editLot": "Editar lote",

apps/app_seeds/lib/i18n/strings.g.dart

@@ -4,9 +4,9 @@
 /// To regenerate, run: `dart run slang`
 ///
 /// Locales: 2
-/// Strings: 184 (92 per locale)
+/// Strings: 186 (93 per locale)
 ///
-/// Built on 2026-07-08 at 09:07 UTC
+/// Built on 2026-07-08 at 09:16 UTC
 
 // coverage:ignore-file
 // ignore_for_file: type=lint, unused_import

apps/app_seeds/lib/i18n/strings_en.g.dart

@@ -162,6 +162,9 @@ class Translations$detail$en {
 	/// en: 'Also known as'
 	String get names => 'Also known as';
 
+	/// en: 'Add name'
+	String get addName => 'Add name';
+
 	/// en: 'Notes'
 	String get notes => 'Notes';
 
@@ -659,6 +662,7 @@ extension on Translations {
 			'detail.lots' => 'Lots',
 			'detail.noLots' => 'No lots yet.',
 			'detail.names' => 'Also known as',
+			'detail.addName' => 'Add name',
 			'detail.notes' => 'Notes',
 			'detail.addLot' => 'Add lot',
 			'detail.editLot' => 'Edit lot',

apps/app_seeds/lib/i18n/strings_es.g.dart

@@ -116,6 +116,7 @@ class _Translations$detail$es extends Translations$detail$en {
 	@override String get lots => 'Lotes';
 	@override String get noLots => 'Aún no hay lotes.';
 	@override String get names => 'También conocida como';
+	@override String get addName => 'Añadir nombre';
 	@override String get notes => 'Notas';
 	@override String get addLot => 'Añadir lote';
 	@override String get editLot => 'Editar lote';
@@ -473,6 +474,7 @@ extension on TranslationsEs {
 			'detail.lots' => 'Lotes',
 			'detail.noLots' => 'Aún no hay lotes.',
 			'detail.names' => 'También conocida como',
+			'detail.addName' => 'Añadir nombre',
 			'detail.notes' => 'Notas',
 			'detail.addLot' => 'Añadir lote',
 			'detail.editLot' => 'Editar lote',

apps/app_seeds/lib/state/variety_detail_cubit.dart

@@ -76,6 +76,12 @@ class VarietyDetailCubit extends Cubit<VarietyDetailState> {
 
   Future<void> deleteLot(String lotId) => _repo.softDeleteLot(lotId);
 
+  Future<void> addVernacularName(String name) =>
+      _repo.addVernacularName(varietyId, name);
+
+  Future<void> removeVernacularName(String nameId) =>
+      _repo.removeVernacularName(nameId);
+
   Future<void> linkSpecies(String speciesId) =>
       _repo.linkSpecies(varietyId, speciesId);
 

apps/app_seeds/lib/ui/variety_detail_screen.dart

@@ -76,17 +76,28 @@ class _DetailView extends StatelessWidget {
         padding: const EdgeInsets.all(16),
         children: [
           _DetailHeader(detail: detail),
-          if (detail.vernacularNames.isNotEmpty) ...[
+          const SizedBox(height: 16),
-            const SizedBox(height: 16),
+          _SectionTitle(t.detail.names),
-            _SectionTitle(t.detail.names),
+          Wrap(
-            Wrap(
+            spacing: 8,
-              spacing: 8,
+            runSpacing: 4,
-              children: [
+            crossAxisAlignment: WrapCrossAlignment.center,
-                for (final name in detail.vernacularNames)
+            children: [
-                  Chip(label: Text(name)),
+              for (final name in detail.vernacularNames)
-              ],
+                InputChip(
-            ),
+                  key: Key('name.${name.id}'),
-          ],
+                  label: Text(name.name),
+                  deleteIcon: const Icon(Icons.close, size: 18),
+                  onDeleted: () => cubit.removeVernacularName(name.id),
+                ),
+              ActionChip(
+                key: const Key('name.add'),
+                avatar: const Icon(Icons.add, size: 18),
+                label: Text(t.detail.addName),
+                onPressed: () => _showAddNameDialog(context, cubit),
+              ),
+            ],
+          ),
           if (detail.notes != null && detail.notes!.trim().isNotEmpty) ...[
             const SizedBox(height: 16),
             _SectionTitle(t.detail.notes),
@@ -400,77 +411,79 @@ class _EditVarietySheetState extends State<_EditVarietySheet> {
         top: 16,
         bottom: MediaQuery.of(context).viewInsets.bottom + 16,
       ),
-      child: Column(
+      child: SingleChildScrollView(
-        mainAxisSize: MainAxisSize.min,
+        child: Column(
-        crossAxisAlignment: CrossAxisAlignment.stretch,
+          mainAxisSize: MainAxisSize.min,
-        children: [
+          crossAxisAlignment: CrossAxisAlignment.stretch,
-          Text(
+          children: [
-            t.editVariety.title,
+            Text(
-            style: Theme.of(context).textTheme.titleLarge,
+              t.editVariety.title,
-          ),
+              style: Theme.of(context).textTheme.titleLarge,
-          const SizedBox(height: 12),
-          TextField(
-            key: const Key('editVariety.name'),
-            controller: _name,
-            decoration: InputDecoration(
-              labelText: t.editVariety.name,
-              border: const OutlineInputBorder(),
             ),
-          ),
+            const SizedBox(height: 12),
-          const SizedBox(height: 12),
+            TextField(
-          TextField(
+              key: const Key('editVariety.name'),
-            key: const Key('editVariety.species'),
+              controller: _name,
-            controller: _speciesField,
+              decoration: InputDecoration(
-            decoration: InputDecoration(
+                labelText: t.editVariety.name,
-              labelText: t.editVariety.species,
+                border: const OutlineInputBorder(),
-              hintText: t.editVariety.speciesHint,
-              prefixIcon: const Icon(Icons.eco_outlined),
-              border: const OutlineInputBorder(),
-            ),
-            onChanged: _onSpeciesQuery,
-          ),
-          for (final match in _suggestions)
-            ListTile(
-              dense: true,
-              key: Key('species.option.${match.id}'),
-              title: Text(match.displayLabel),
-              subtitle: match.family == null ? null : Text(match.family!),
-              onTap: () => _pick(match),
-            ),
-          const SizedBox(height: 12),
-          TextField(
-            controller: _category,
-            decoration: InputDecoration(
-              labelText: t.editVariety.category,
-              border: const OutlineInputBorder(),
-            ),
-          ),
-          const SizedBox(height: 12),
-          TextField(
-            controller: _notes,
-            minLines: 2,
-            maxLines: 5,
-            decoration: InputDecoration(
-              labelText: t.editVariety.notes,
-              border: const OutlineInputBorder(),
-            ),
-          ),
-          const SizedBox(height: 16),
-          Row(
-            children: [
-              TextButton(
-                onPressed: () => Navigator.of(context).pop(),
-                child: Text(t.common.cancel),
               ),
-              const Spacer(),
+            ),
-              FilledButton(
+            const SizedBox(height: 12),
-                key: const Key('editVariety.save'),
+            TextField(
-                onPressed: _save,
+              key: const Key('editVariety.species'),
-                child: Text(t.common.save),
+              controller: _speciesField,
+              decoration: InputDecoration(
+                labelText: t.editVariety.species,
+                hintText: t.editVariety.speciesHint,
+                prefixIcon: const Icon(Icons.eco_outlined),
+                border: const OutlineInputBorder(),
               ),
-            ],
+              onChanged: _onSpeciesQuery,
-          ),
+            ),
-        ],
+            for (final match in _suggestions)
+              ListTile(
+                dense: true,
+                key: Key('species.option.${match.id}'),
+                title: Text(match.displayLabel),
+                subtitle: match.family == null ? null : Text(match.family!),
+                onTap: () => _pick(match),
+              ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: _category,
+              decoration: InputDecoration(
+                labelText: t.editVariety.category,
+                border: const OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: _notes,
+              minLines: 2,
+              maxLines: 5,
+              decoration: InputDecoration(
+                labelText: t.editVariety.notes,
+                border: const OutlineInputBorder(),
+              ),
+            ),
+            const SizedBox(height: 16),
+            Row(
+              children: [
+                TextButton(
+                  onPressed: () => Navigator.of(context).pop(),
+                  child: Text(t.common.cancel),
+                ),
+                const Spacer(),
+                FilledButton(
+                  key: const Key('editVariety.save'),
+                  onPressed: _save,
+                  child: Text(t.common.save),
+                ),
+              ],
+            ),
+          ],
+        ),
       ),
     );
   }
@@ -598,6 +611,44 @@ Future<void> _showLotSheet(
   );
 }
 
+Future<void> _showAddNameDialog(
+  BuildContext context,
+  VarietyDetailCubit cubit,
+) {
+  final t = context.t;
+  final controller = TextEditingController();
+  void submit(BuildContext dialogContext) {
+    final name = controller.text.trim();
+    if (name.isNotEmpty) cubit.addVernacularName(name);
+    Navigator.of(dialogContext).pop();
+  }
+
+  return showDialog<void>(
+    context: context,
+    builder: (dialogContext) => AlertDialog(
+      title: Text(t.detail.addName),
+      content: TextField(
+        key: const Key('name.field'),
+        controller: controller,
+        autofocus: true,
+        decoration: InputDecoration(labelText: t.editVariety.name),
+        onSubmitted: (_) => submit(dialogContext),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(dialogContext).pop(),
+          child: Text(t.common.cancel),
+        ),
+        FilledButton(
+          key: const Key('name.save'),
+          onPressed: () => submit(dialogContext),
+          child: Text(t.common.save),
+        ),
+      ],
+    ),
+  );
+}
+
 String? _nullIfBlank(String value) {
   final trimmed = value.trim();
   return trimmed.isEmpty ? null : trimmed;

apps/app_seeds/test/data/variety_detail_test.dart

@@ -171,4 +171,17 @@ void main() {
 
     expect((await repo.watchVariety(id).first)!.lots, isEmpty);
   });
+
+  test('add and remove vernacular names', () async {
+    final id = await repo.addQuickVariety(label: 'Maize');
+    final nameId = await repo.addVernacularName(id, 'Maíz');
+
+    expect(
+      (await repo.watchVariety(id).first)!.vernacularNames.map((n) => n.name),
+      ['Maíz'],
+    );
+
+    await repo.removeVernacularName(nameId);
+    expect((await repo.watchVariety(id).first)!.vernacularNames, isEmpty);
+  });
 }

apps/app_seeds/test/ui/variety_detail_screen_test.dart

@@ -255,4 +255,32 @@ void main() {
     expect(find.text('No lots yet.'), findsOneWidget);
     await disposeTree(tester);
   });
+
+  testWidgets('adding and removing a vernacular name', (tester) async {
+    final repo = newTestRepository(db);
+    final id = await repo.addQuickVariety(label: 'Maize');
+
+    await tester.pumpWidget(
+      wrapDetail(
+        repository: repo,
+        varietyId: id,
+        species: newTestSpeciesRepository(db),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byKey(const Key('name.add')));
+    await tester.pumpAndSettle();
+    await tester.enterText(find.byKey(const Key('name.field')), 'Maíz');
+    await tester.tap(find.byKey(const Key('name.save')));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Maíz'), findsOneWidget);
+
+    await tester.tap(find.byIcon(Icons.close)); // the chip's delete icon
+    await tester.pumpAndSettle();
+
+    expect(find.text('Maíz'), findsNothing);
+    await disposeTree(tester);
+  });
 }