feat(app): Home, the Library and the studyset sheets laid out as before

Home: plain cards on the surface, 16 dp apart, the goal first and the
Pomodoro timer after it in a new dashboard. The streak chip sits centred
in the app bar, and its sheet shows the days inside a big flame and the
week as marks over the weekdays' initials, with a word on today in a box.
The week names its day as "Thursday, Oct 8" and its days carry no
tooltip. The heatmap scrolls its weekdays with the weeks, outlines the
days to come, and names a day's activities with its date. The goal card
has a ring of 5 dp, a check once met and a pencil, and its sheet saves
across its width with Remove goal below. Arranging puts an eye on each
widget's corner and lifts the one picked up, with a tap the hand feels;
with every widget hidden, Customise brings arranging back. The stepper
moves to core, where the goal's sheet takes it too.

Library: the counts line includes files (PDFs); Refresh in the app bar
and pulling the list down sync now; a list that can't be read offers
Retry, which reads it again; the star keeps its square corners.

Studyset sheet: "Title *", the secondary title explained behind a
question mark, Inherit as a box beside the colour, and the description
in up to three lines with a chevron. Move sheet: round marks, the
studyset itself marked as current, the top level only while it is
inside another, archived studysets last under their heading, the
destination named in the footer, and a new studyset to move into, made
only once the move is.

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

@@ -98,7 +98,7 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get studysetSheetSecondaryHelper =>
-      'Wird als kleines Label über dem Titel angezeigt.';
+      'Wird als kleines Label über dem Titel auf Karten und im Kopf des Lernsets angezeigt. Pfade nutzen es, um Stufen zu kennzeichnen (Challenge, Meilenstein, Lektion).';
 
   @override
   String get studysetSheetColor => 'Farbe';
@@ -171,6 +171,23 @@ class AppLocalizationsDe extends AppLocalizations {
     return '$_temp0';
   }
 
+  @override
+  String studysetCountFiles(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count Dateien',
+      one: '1 Datei',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String get libraryRefresh => 'Aktualisieren';
+
+  @override
+  String get libraryRetry => 'Erneut versuchen';
+
   @override
   String get studysetNoContent => 'Noch kein Inhalt';
 
@@ -845,20 +862,37 @@ class AppLocalizationsDe extends AppLocalizations {
   String get studysetMoveTopLevel => 'Oberste Ebene';
 
   @override
-  String get studysetMoveCurrent => 'Aktueller Ort';
+  String get studysetMoveCurrent => '(aktuell)';
+
+  @override
+  String get studysetMoveTopLevelRow => 'Oberste Ebene (in keinem Lernset)';
+
+  @override
+  String get studysetMoveArchived => 'Archiviert';
+
+  @override
+  String get studysetMoveNew => 'Neues Lernset';
+
+  @override
+  String get studysetMoveSelectDestination => 'Wähle ein Ziel';
+
+  @override
+  String studysetMoveDestination(String name) {
+    return 'Ziel: $name';
+  }
 
   @override
   String get studysetMoveConfirm => 'Verschieben';
 
   @override
-  String get studysetMoveShowInside => 'Inhalt anzeigen';
+  String get studysetMoveShowInside => 'Unter-Lernsets anzeigen';
 
   @override
-  String get studysetMoveHideInside => 'Inhalt ausblenden';
+  String get studysetMoveHideInside => 'Unter-Lernsets ausblenden';
 
   @override
-  String studysetMoved(String destination) {
-    return 'Nach „$destination“ verschoben.';
+  String studysetMoved(String title, String destination) {
+    return '„$title“ nach $destination verschoben.';
   }
 
   @override
@@ -877,11 +911,18 @@ class AppLocalizationsDe extends AppLocalizations {
   String get studysetSheetDescription => 'Beschreibung';
 
   @override
-  String get studysetSheetDescriptionAdd => 'Beschreibung hinzufügen';
+  String get studysetSheetDescriptionAdd =>
+      'Tippen, um eine Beschreibung hinzuzufügen';
 
   @override
-  String get studysetSheetInheritColor =>
-      'Gleiche Farbe wie das Lernset, in dem es liegt';
+  String get studysetSheetDescriptionAdded =>
+      'Beschreibung hinzugefügt — zum Bearbeiten tippen';
+
+  @override
+  String get studysetSheetInheritColor => 'Erben';
+
+  @override
+  String get fieldRequired => 'Pflichtfeld';
 
   @override
   String get exploreTitle => 'Entdecken';
@@ -2179,11 +2220,14 @@ class AppLocalizationsDe extends AppLocalizations {
   String get homeAllHidden => 'Alle Widgets sind ausgeblendet';
 
   @override
-  String get homeAllHiddenHint =>
-      'Halte hier lange gedrückt, um welche zurückzuholen.';
+  String get homeAllHiddenBody =>
+      'Blende einige wieder ein, um dein Dashboard zu füllen.';
 
   @override
-  String get homeWidgetGoal => 'Lernziel';
+  String get homeCustomise => 'Anpassen';
+
+  @override
+  String get homeWidgetGoal => 'Tagesziel';
 
   @override
   String get homeWidgetWeek => 'Wochenübersicht';
@@ -2299,17 +2343,6 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get weekRestDay => 'Ruhetag';
 
-  @override
-  String weekDueCount(int count) {
-    String _temp0 = intl.Intl.pluralLogic(
-      count,
-      locale: localeName,
-      other: '$count Karten fällig',
-      one: '1 Karte fällig',
-    );
-    return '$_temp0';
-  }
-
   @override
   String get heatmapLess => 'Weniger';
 
@@ -2334,7 +2367,6 @@ class AppLocalizationsDe extends AppLocalizations {
       locale: localeName,
       other: '$count Aktivitäten',
       one: '1 Aktivität',
-      zero: 'Nichts',
     );
     return '$_temp0 · $date';
   }
@@ -3167,7 +3199,7 @@ class AppLocalizationsDe extends AppLocalizations {
   String get imageOpenPdfPage => 'PDF auf dieser Seite öffnen';
 
   @override
-  String get homeWidgetDeadlines => 'Lesefristen';
+  String get homeWidgetDeadlines => 'PDF-Lesefristen';
 
   @override
   String get deadlinesTitle => 'Lesefristen';