feat(studyset): every menu of a studyset offers all of its options

The library's card offered six options, a topic three, the studyset's
own screen all of them. Each now offers the same, from one list: edit,
move, study options, import and export content, reset progress, archive
or unarchive, delete, more info, and for a copy reporting to its author
and its reports and suggestions. Importing runs where the studyset's
blocs are, so from the library or a topic it opens the studyset's
screen, which asks what to import as it opens.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MMm7usAo6q9ZZRoPkWjoxi
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

halkyon_learn_flutter/test/feature/studyset/widget/library_screen_test.dart

@@ -393,8 +393,8 @@ void main() {
     expect(find.text('No studysets match your search'), findsOneWidget);
   });
 
-  testWidgets('the options offer, in this order: Edit, Move, Study options, '
-      'Import from Anki, Archive and Delete', (tester) async {
+  testWidgets("the options are every studyset's, as its screen has them, "
+      'in this order', (tester) async {
     stored('japanese', 'Japanese');
     await showLibrary(tester);
 
@@ -406,9 +406,12 @@ void main() {
         'Edit',
         'Move to…',
         'Study options',
-        'Import from Anki',
+        'Import content',
+        'Export content',
+        'Reset progress',
         'Archive',
         'Delete',
+        'More info',
       ])
         tester.getTopLeft(find.text(label)).dy,
     ];
@@ -437,13 +440,19 @@ void main() {
     expect(gateway.moves.single.$2, 'languages');
   });
 
-  testWidgets('imports from Anki into the studyset from its options', (
-    tester,
-  ) async {
+  testWidgets('Import content opens the studyset, asking there what to '
+      'import: from Anki, say', (tester) async {
     stored('japanese', 'Japanese');
     await showLibrary(tester);
 
-    await choose(tester, 'Japanese', 'Import from Anki');
+    await choose(tester, 'Japanese', 'Import content');
+    await tester.pumpAndSettle();
+    expect(
+      find.descendant(of: find.byType(AppBar), matching: find.text('Japanese')),
+      findsOneWidget,
+    );
+    await tester.tap(find.text('Anki deck'));
+    await tester.pump();
     await tester.pump();
 
     expect(files.asked, [

halkyon_learn_flutter/test/feature/studyset/widget/studyset_card_test.dart

@@ -50,13 +50,7 @@ void main() {
                 onOpen: () => calls.add('open'),
                 onStudy: () => calls.add('study'),
                 onToggleStar: () => calls.add('star'),
-                onEdit: () => calls.add('edit'),
-                onMove: () => calls.add('move'),
-                onStudyOptions: () => calls.add('study options'),
-                onImport: () => calls.add('import'),
-                onArchive: () => calls.add('archive'),
-                onUnarchive: () => calls.add('unarchive'),
-                onDelete: () => calls.add('delete'),
+                onOption: (option) => calls.add(option.name),
               ),
             ),
           ),
@@ -237,6 +231,9 @@ void main() {
 
   for (final (option, call) in [
     ('Edit', 'edit'),
+    ('Import content', 'importContent'),
+    ('Export content', 'exportContent'),
+    ('Reset progress', 'reset'),
     ('Archive', 'archive'),
     ('Delete', 'delete'),
   ]) {

halkyon_learn_flutter/test/feature/studyset/widget/studyset_screen_test.dart

@@ -328,8 +328,8 @@ void main() {
     expect(find.text('All topics'), findsOneWidget);
   });
 
-  testWidgets('a long press on a topic opens its options: edit, reset its '
-      'progress, delete', (tester) async {
+  testWidgets("a long press on a topic opens its options, every "
+      "studyset's", (tester) async {
     stored('japanese', 'Japanese');
     stored('kana', 'Kana', parent: 'japanese');
     await openFromLibrary(tester, 'Japanese');
@@ -337,9 +337,19 @@ void main() {
     await tester.longPress(find.text('Kana'));
     await tester.pumpAndSettle();
 
-    expect(find.text('Edit'), findsOneWidget);
-    expect(find.text('Reset progress'), findsOneWidget);
-    expect(find.text('Delete'), findsOneWidget);
+    for (final option in [
+      'Edit',
+      'Move to…',
+      'Study options',
+      'Import content',
+      'Export content',
+      'Reset progress',
+      'Archive',
+      'Delete',
+      'More info',
+    ]) {
+      expect(find.text(option), findsOneWidget, reason: option);
+    }
   });
 
   testWidgets("resetting a topic's progress asks what of it starts afresh, "