feat(jellyfin): the words' panel unfolds senses, shows progress, filters

The panel beside the video lists each entry's senses one to a line, as
Jisho does (and as every dictionary list in the app now does), folded
to two lines; an entry unfolds over the list, not in it, after a moment
under the pointer or on a tap, in the video's colour, so nothing moves
under the pointer and words of many senses (上げる has 25) crowd out
nothing. Each entry links to the word on Jisho.org, opened only when
tapped. A word the studyset holds shows how far its card is learnt:
New, Learning, Due, or Learned with when it comes again. The video's
words go through a filter in place of New only: new to the studyset,
held or all, JLPT levels, and word classes. The dictionary's sources
stay in the panel's lower right corner, and the player's controls hide
after 2 seconds rather than 3.

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/l10n/app_localizations_de.dart

@@ -6658,6 +6658,70 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get watchKeyEnd => 'Ende';
 
+  @override
+  String get watchProgressNew => 'Neu';
+
+  @override
+  String get watchProgressLearning => 'Am Lernen';
+
+  @override
+  String get watchProgressDue => 'Fällig';
+
+  @override
+  String watchProgressLearned(int days) {
+    String _temp0 = intl.Intl.pluralLogic(
+      days,
+      locale: localeName,
+      other: 'in $days Tagen wieder',
+      one: 'morgen wieder',
+      zero: 'heute wieder',
+    );
+    return 'Gelernt · $_temp0';
+  }
+
+  @override
+  String get watchJisho => 'Auf Jisho nachschlagen';
+
+  @override
+  String get watchFilter => 'Wörter filtern';
+
+  @override
+  String get watchFilterFresh => 'Neue Wörter';
+
+  @override
+  String get watchFilterHeld => 'Wörter im Lernset';
+
+  @override
+  String get watchFilterAll => 'Alle Wörter';
+
+  @override
+  String get watchFilterNoLevel => 'Ohne JLPT-Stufe';
+
+  @override
+  String get watchFilterClass => 'Wortart';
+
+  @override
+  String get watchFilterEmpty =>
+      'Keine Wörter dieses Videos passen zum Filter.';
+
+  @override
+  String get watchClassNoun => 'Nomen';
+
+  @override
+  String get watchClassVerb => 'Verben';
+
+  @override
+  String get watchClassAdjective => 'Adjektive';
+
+  @override
+  String get watchClassAdverb => 'Adverbien';
+
+  @override
+  String get watchClassExpression => 'Ausdrücke';
+
+  @override
+  String get watchClassOther => 'Andere';
+
   @override
   String get watchNone => 'Keine';
 
@@ -6679,9 +6743,6 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get watchWordsTitle => 'Wörter in diesem Video';
 
-  @override
-  String get watchWordsNewOnly => 'Nur neue';
-
   @override
   String get watchWordsFinding => 'Wörter werden gesucht …';