fix(jellyfin): Add and Jisho on the word's own line, entries unfold after 0.6 s

The Watch screen's entries carry Jisho's link and Add at the end of the headword's line, aligned right, rather than beside the senses; and an entry unfolds over the list once the pointer has rested on it for 0.6 s, as 0.3 s opened entries the pointer only passed over.

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

halkyon_learn_flutter/lib/src/feature/dictionary/widget/dictionary_word_tile.dart

@@ -11,13 +11,14 @@ import 'package:url_launcher/url_launcher.dart';
 /// A word as a dictionary lists it: its headword and reading, [progress]
 /// beside them if given, its senses one to a line with their grammar notes
 /// small, grey and slanted, cut short at two lines unless [whole], its
-/// level and whether it is common; [trailing] at its end, and [onTap] for
-/// the whole row.
+/// level and whether it is common; [trailing] at its end, [actions] at the
+/// end of the headword's own line, and [onTap] for the whole row.
 class const DictionaryWordTile({
   required final DictionaryWord word,
   final Widget? trailing,
   final VoidCallback? onTap,
   final Widget? progress,
+  final List<Widget> actions = const [],
   final bool whole = false,
   super.key,
 }) extends StatelessWidget {
@@ -31,10 +32,16 @@ class const DictionaryWordTile({
     ];
     return ListTile(
       onTap: onTap,
-      title: Text.rich(
+      title: Row(
+        children: [
+          Expanded(
+            child: Text.rich(
               TextSpan(
                 children: [
-            TextSpan(text: word.headword, style: theme.textTheme.titleMedium),
+                  TextSpan(
+                    text: word.headword,
+                    style: theme.textTheme.titleMedium,
+                  ),
                   if (word.reading case final reading?)
                     TextSpan(
                       text: '  $reading',
@@ -53,6 +60,10 @@ class const DictionaryWordTile({
                 ],
               ),
             ),
+          ),
+          ...actions,
+        ],
+      ),
       subtitle: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [

halkyon_learn_flutter/lib/src/feature/jellyfin/widget/watch_screen.dart

@@ -607,10 +607,15 @@ class const _ChosenWord({required final Dictionary dictionary})
       return const SizedBox();
     }
     final translation = state.translationOf(selected.line);
-    Widget? trailing(DictionaryWord entry, String form) =>
-        state.known.contains(entry.ref)
-        ? null
-        : FilledButton.tonal(
+    // On the headword's line, at its end (decided 2026-10-13): Jisho, and
+    // Add for a word the studyset lacks.
+    List<Widget> actions(DictionaryWord entry, String form) => [
+      _JishoLink(word: entry),
+      if (!state.known.contains(entry.ref))
+        FilledButton.tonal(
+          style: FilledButton.styleFrom(
+            visualDensity: VisualDensity.compact,
+          ),
           onPressed: () async {
             final messenger = ScaffoldMessenger.of(context);
             await cubit().add(entry, form: form);
@@ -619,27 +624,23 @@ class const _ChosenWord({required final Dictionary dictionary})
             );
           },
           child: Text(l10n.watchAdd),
-          );
-    Widget beside(DictionaryWord word) => Row(
-      mainAxisSize: MainAxisSize.min,
-      children: [
-        if (state.known.contains(word.ref))
-          _ProgressChip(schedule: state.progress[word.ref]),
-        _JishoLink(word: word),
-      ],
-    );
+        ),
+    ];
+    Widget? beside(DictionaryWord word) => state.known.contains(word.ref)
+        ? _ProgressChip(schedule: state.progress[word.ref])
+        : null;
     Widget row(DictionaryWord entry, String form) => _Unfolding(
       word: entry,
       folded: DictionaryWordTile(
         word: entry,
         progress: beside(entry),
-        trailing: trailing(entry, form),
+        actions: actions(entry, form),
       ),
       whole: DictionaryWordTile(
         word: entry,
         whole: true,
         progress: beside(entry),
-        trailing: trailing(entry, form),
+        actions: actions(entry, form),
       ),
     );
     return ListView(
@@ -703,8 +704,9 @@ class const _Unfolding({
   required final Widget folded,
   required final Widget whole,
 }) extends StatefulWidget {
-  /// How long the pointer rests on an entry before it unfolds.
-  static const rest = Duration(milliseconds: 300);
+  /// How long the pointer rests on an entry before it unfolds (decided
+  /// 2026-10-13: 0.3 s opened entries the pointer only passed over).
+  static const rest = Duration(milliseconds: 600);
 
   @override
   State<_Unfolding> createState() => _UnfoldingState();
@@ -769,7 +771,7 @@ class _UnfoldingState() extends State<_Unfolding> {
   Widget build(BuildContext context) => LayoutBuilder(
     builder: (context, box) {
       // The senses' room: the row less its padding and what is beside it.
-      if (!_folds(context, box.maxWidth - 140)) {
+      if (!_folds(context, box.maxWidth - 40)) {
         return widget.folded;
       }
       final lit = _VideoColour.litOf(context);

halkyon_learn_flutter/test/feature/jellyfin/watch_screen_test.dart

@@ -534,7 +534,7 @@ void main() {
     await mouse.moveTo(
       tester.getCenter(find.textContaining('sense 1 of a long').first),
     );
-    await tester.pump(const Duration(milliseconds: 400));
+    await tester.pump(const Duration(milliseconds: 700));
     await tester.pumpAndSettle();
     expect(find.byType(VocabularySensesView), findsOneWidget);
     expect(find.text('station, as in sense 6 of a long entry'), findsOneWidget);