feat(learn): a learning path's Scroll view, chosen in the study settings

A path shows either one step at a time (Steps) or on one page (Scroll,
as Tomorrow University's): the steps one below the other up to the first
question not answered right, answered in place with a lock below it, the
page running on once it is right, Finish at its end. A text step is done
once its end was on screen. The outline of the steps (done ticked, the
one in view marked, those beyond the question locked, a tap scrolling
there) is a column from expanded windows on, a drawer from the bar below.

The choice is the person's study option (`StudyOptions.pathView`,
settings schema 15), in Settings › Study and the session settings.

Whats-New: Learning paths can show on one scrolling page with an outline beside them: choose Scroll under Settings › Study.
Whats-New-De: Lernpfade lassen sich auf einer scrollbaren Seite mit Gliederung daneben zeigen: unter Einstellungen › Lernen „Scrollen“ wählen.

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

apps/learn/halkyon_learn_flutter/lib/l10n/app_de.arb

@@ -2176,5 +2176,11 @@
   "cardHintsFurigana": "Furigana",
   "cardHintsPinyin": "Pinyin",
   "cardHintsReadings": "Text darüber",
-  "cardHintsReadingsUnreviewed": "Manche Lesungen wurden automatisch erstellt und nicht geprüft."
+  "cardHintsReadingsUnreviewed": "Manche Lesungen wurden automatisch erstellt und nicht geprüft.",
+  "settingsPathView": "Lernpfade",
+  "settingsPathViewHelp": "Schritte zeigt einen Schritt nach dem anderen. Scrollen zeigt einen Pfad auf einer Seite bis zu seiner nächsten Frage, mit seiner Gliederung daneben.",
+  "pathViewSteps": "Schritte",
+  "pathViewScroll": "Scrollen",
+  "runnerOutline": "Gliederung",
+  "runnerScrollLocked": "Beantworte die Frage oben, um weiterzumachen."
 }

apps/learn/halkyon_learn_flutter/lib/l10n/app_en.arb

@@ -2678,5 +2678,17 @@
   "cardHintsReadings": "Text above",
   "@cardHintsReadings": {"description": "The hints sheet's switch showing the text above its sentences, where it is neither furigana nor pinyin."},
   "cardHintsReadingsUnreviewed": "Some readings were made automatically and not reviewed.",
-  "@cardHintsReadingsUnreviewed": {"description": "Below a hint whose readings (from Tatoeba, made by MeCab or automatic pinyin) no one reviewed."}
+  "@cardHintsReadingsUnreviewed": {"description": "Below a hint whose readings (from Tatoeba, made by MeCab or automatic pinyin) no one reviewed."},
+  "settingsPathView": "Learning paths",
+  "@settingsPathView": {"description": "The Study settings' choice of how a learning path shows its steps."},
+  "settingsPathViewHelp": "Steps shows one step at a time. Scroll shows a path on one page up to its next question, with its outline beside it.",
+  "@settingsPathViewHelp": {"description": "Explains the two ways a learning path shows."},
+  "pathViewSteps": "Steps",
+  "@pathViewSteps": {"description": "A learning path shown one step at a time."},
+  "pathViewScroll": "Scroll",
+  "@pathViewScroll": {"description": "A learning path shown on one page, scrolled through."},
+  "runnerOutline": "Outline",
+  "@runnerOutline": {"description": "The list of a learning path's steps beside or over its page in the Scroll view."},
+  "runnerScrollLocked": "Answer the question above to go on.",
+  "@runnerScrollLocked": {"description": "Below the question a learning path's page stops at, in the Scroll view."}
 }

apps/learn/halkyon_learn_flutter/lib/l10n/app_localizations.dart

@@ -12841,6 +12841,42 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Some readings were made automatically and not reviewed.'**
   String get cardHintsReadingsUnreviewed;
+
+  /// The Study settings' choice of how a learning path shows its steps.
+  ///
+  /// In en, this message translates to:
+  /// **'Learning paths'**
+  String get settingsPathView;
+
+  /// Explains the two ways a learning path shows.
+  ///
+  /// In en, this message translates to:
+  /// **'Steps shows one step at a time. Scroll shows a path on one page up to its next question, with its outline beside it.'**
+  String get settingsPathViewHelp;
+
+  /// A learning path shown one step at a time.
+  ///
+  /// In en, this message translates to:
+  /// **'Steps'**
+  String get pathViewSteps;
+
+  /// A learning path shown on one page, scrolled through.
+  ///
+  /// In en, this message translates to:
+  /// **'Scroll'**
+  String get pathViewScroll;
+
+  /// The list of a learning path's steps beside or over its page in the Scroll view.
+  ///
+  /// In en, this message translates to:
+  /// **'Outline'**
+  String get runnerOutline;
+
+  /// Below the question a learning path's page stops at, in the Scroll view.
+  ///
+  /// In en, this message translates to:
+  /// **'Answer the question above to go on.'**
+  String get runnerScrollLocked;
 }
 
 class _AppLocalizationsDelegate

apps/learn/halkyon_learn_flutter/lib/l10n/app_localizations_de.dart

@@ -8204,4 +8204,24 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get cardHintsReadingsUnreviewed =>
       'Manche Lesungen wurden automatisch erstellt und nicht geprüft.';
+
+  @override
+  String get settingsPathView => 'Lernpfade';
+
+  @override
+  String get settingsPathViewHelp =>
+      'Schritte zeigt einen Schritt nach dem anderen. Scrollen zeigt einen Pfad auf einer Seite bis zu seiner nächsten Frage, mit seiner Gliederung daneben.';
+
+  @override
+  String get pathViewSteps => 'Schritte';
+
+  @override
+  String get pathViewScroll => 'Scrollen';
+
+  @override
+  String get runnerOutline => 'Gliederung';
+
+  @override
+  String get runnerScrollLocked =>
+      'Beantworte die Frage oben, um weiterzumachen.';
 }

apps/learn/halkyon_learn_flutter/lib/l10n/app_localizations_en.dart

@@ -8131,6 +8131,25 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get cardHintsReadingsUnreviewed =>
       'Some readings were made automatically and not reviewed.';
+
+  @override
+  String get settingsPathView => 'Learning paths';
+
+  @override
+  String get settingsPathViewHelp =>
+      'Steps shows one step at a time. Scroll shows a path on one page up to its next question, with its outline beside it.';
+
+  @override
+  String get pathViewSteps => 'Steps';
+
+  @override
+  String get pathViewScroll => 'Scroll';
+
+  @override
+  String get runnerOutline => 'Outline';
+
+  @override
+  String get runnerScrollLocked => 'Answer the question above to go on.';
 }
 
 /// The translations for English, as used in the United Kingdom (`en_GB`).