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_en.dart

@@ -96,7 +96,7 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get studysetSheetSecondaryHelper =>
-      'Shown as a small label above the title.';
+      'Shown as a small label above the title on cards and the studyset\'s header. Paths use it to label tiers (Challenge, Milestone, Lesson).';
 
   @override
   String get studysetSheetColor => 'Colour';
@@ -169,6 +169,23 @@ class AppLocalizationsEn extends AppLocalizations {
     return '$_temp0';
   }
 
+  @override
+  String studysetCountFiles(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count files',
+      one: '1 file',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String get libraryRefresh => 'Refresh';
+
+  @override
+  String get libraryRetry => 'Retry';
+
   @override
   String get studysetNoContent => 'No content yet';
 
@@ -840,20 +857,37 @@ class AppLocalizationsEn extends AppLocalizations {
   String get studysetMoveTopLevel => 'Top level';
 
   @override
-  String get studysetMoveCurrent => 'Where it is now';
+  String get studysetMoveCurrent => '(current)';
+
+  @override
+  String get studysetMoveTopLevelRow => 'Top level (no parent)';
+
+  @override
+  String get studysetMoveArchived => 'Archived';
+
+  @override
+  String get studysetMoveNew => 'New studyset';
+
+  @override
+  String get studysetMoveSelectDestination => 'Select a destination';
+
+  @override
+  String studysetMoveDestination(String name) {
+    return 'Destination: $name';
+  }
 
   @override
   String get studysetMoveConfirm => 'Move';
 
   @override
-  String get studysetMoveShowInside => 'Show what is inside';
+  String get studysetMoveShowInside => 'Show sub-studysets';
 
   @override
-  String get studysetMoveHideInside => 'Hide what is inside';
+  String get studysetMoveHideInside => 'Hide sub-studysets';
 
   @override
-  String studysetMoved(String destination) {
-    return 'Moved to $destination.';
+  String studysetMoved(String title, String destination) {
+    return 'Moved \"$title\" to $destination.';
   }
 
   @override
@@ -872,11 +906,16 @@ class AppLocalizationsEn extends AppLocalizations {
   String get studysetSheetDescription => 'Description';
 
   @override
-  String get studysetSheetDescriptionAdd => 'Add a description';
+  String get studysetSheetDescriptionAdd => 'Tap to add a description';
 
   @override
-  String get studysetSheetInheritColor =>
-      'Same colour as the studyset it is in';
+  String get studysetSheetDescriptionAdded => 'Description added — tap to edit';
+
+  @override
+  String get studysetSheetInheritColor => 'Inherit';
+
+  @override
+  String get fieldRequired => 'required';
 
   @override
   String get exploreTitle => 'Explore';
@@ -2166,10 +2205,13 @@ class AppLocalizationsEn extends AppLocalizations {
   String get homeAllHidden => 'All widgets are hidden';
 
   @override
-  String get homeAllHiddenHint => 'Long-press here to bring some back.';
+  String get homeAllHiddenBody => 'Bring some back to fill your dashboard.';
 
   @override
-  String get homeWidgetGoal => 'Study goal';
+  String get homeCustomise => 'Customise';
+
+  @override
+  String get homeWidgetGoal => 'Daily goal';
 
   @override
   String get homeWidgetWeek => 'Week overview';
@@ -2283,17 +2325,6 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get weekRestDay => 'Rest day';
 
-  @override
-  String weekDueCount(int count) {
-    String _temp0 = intl.Intl.pluralLogic(
-      count,
-      locale: localeName,
-      other: '$count cards due',
-      one: '1 card due',
-    );
-    return '$_temp0';
-  }
-
   @override
   String get heatmapLess => 'Less';
 
@@ -2318,7 +2349,6 @@ class AppLocalizationsEn extends AppLocalizations {
       locale: localeName,
       other: '$count activities',
       one: '1 activity',
-      zero: 'Nothing',
     );
     return '$_temp0 · $date';
   }
@@ -3140,7 +3170,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get imageOpenPdfPage => 'Open the PDF at this page';
 
   @override
-  String get homeWidgetDeadlines => 'Reading deadlines';
+  String get homeWidgetDeadlines => 'PDF reading deadlines';
 
   @override
   String get deadlinesTitle => 'Reading deadlines';
@@ -3681,12 +3711,12 @@ class AppLocalizationsEnUs extends AppLocalizationsEn {
     return 'Color: $color';
   }
 
-  @override
-  String get studysetSheetInheritColor => 'Same color as the studyset it is in';
-
   @override
   String get tagSheetColor => 'Color';
 
   @override
   String get formatAlignCenter => 'Center';
+
+  @override
+  String get homeCustomise => 'Customize';
 }