feat(train): a ride's distance from the wheel where GPS falls short (ADR 0030, D49)

The speed sensor's wheel gives a ride's distance, splits, progress and live
speed where GPS made less than 90 % of its way (a turbo trainer, a tunnel);
its circumference starts at 2105 mm, is learnt from rides with 2 km of GPS
or typed on the Record sheet.

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/train/halkyon_train_flutter/lib/l10n/app_de.arb

@@ -540,5 +540,11 @@
   "workoutPedalling": "Trittfrequenz",
   "workoutAverageCadence": "durchschnittliche Trittfrequenz",
   "workoutNormalisedPower": "normalisierte Leistung",
-  "workoutRpmValue": "{rpm} U/min"
+  "workoutRpmValue": "{rpm} U/min",
+  "recordWheel": "Radumfang",
+  "recordWheelMeasured": "{mm} mm, per GPS gemessen",
+  "recordWheelTyped": "{mm} mm, wie du ihn eingegeben hast",
+  "recordWheelDefault": "{mm} mm, bis GPS ihn auf 2 km Fahrt gemessen hat",
+  "recordWheelHint": "In Millimetern, wie auf dem Reifen (700×25C: 2105); leer, damit GPS ihn misst",
+  "recordWheelSave": "Speichern"
 }

apps/train/halkyon_train_flutter/lib/l10n/app_en.arb

@@ -680,5 +680,14 @@
   "workoutAverageCadence": "average cadence",
   "workoutNormalisedPower": "normalised power",
   "workoutRpmValue": "{rpm} rpm",
-  "@workoutRpmValue": {"placeholders": {"rpm": {"type": "int"}}}
+  "@workoutRpmValue": {"placeholders": {"rpm": {"type": "int"}}},
+  "recordWheel": "Wheel circumference",
+  "recordWheelMeasured": "{mm} mm, measured by GPS",
+  "@recordWheelMeasured": {"placeholders": {"mm": {"type": "int"}}},
+  "recordWheelTyped": "{mm} mm, as you typed it",
+  "@recordWheelTyped": {"placeholders": {"mm": {"type": "int"}}},
+  "recordWheelDefault": "{mm} mm until GPS has measured it on a ride of 2 km",
+  "@recordWheelDefault": {"placeholders": {"mm": {"type": "int"}}},
+  "recordWheelHint": "In millimetres, as the tyre says (700×25C: 2105); empty to have GPS measure it",
+  "recordWheelSave": "Save"
 }

apps/train/halkyon_train_flutter/lib/l10n/app_localizations.dart

@@ -3267,6 +3267,42 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'{rpm} rpm'**
   String workoutRpmValue(int rpm);
+
+  /// No description provided for @recordWheel.
+  ///
+  /// In en, this message translates to:
+  /// **'Wheel circumference'**
+  String get recordWheel;
+
+  /// No description provided for @recordWheelMeasured.
+  ///
+  /// In en, this message translates to:
+  /// **'{mm} mm, measured by GPS'**
+  String recordWheelMeasured(int mm);
+
+  /// No description provided for @recordWheelTyped.
+  ///
+  /// In en, this message translates to:
+  /// **'{mm} mm, as you typed it'**
+  String recordWheelTyped(int mm);
+
+  /// No description provided for @recordWheelDefault.
+  ///
+  /// In en, this message translates to:
+  /// **'{mm} mm until GPS has measured it on a ride of 2 km'**
+  String recordWheelDefault(int mm);
+
+  /// No description provided for @recordWheelHint.
+  ///
+  /// In en, this message translates to:
+  /// **'In millimetres, as the tyre says (700×25C: 2105); empty to have GPS measure it'**
+  String get recordWheelHint;
+
+  /// No description provided for @recordWheelSave.
+  ///
+  /// In en, this message translates to:
+  /// **'Save'**
+  String get recordWheelSave;
 }
 
 class _AppLocalizationsDelegate

apps/train/halkyon_train_flutter/lib/l10n/app_localizations_de.dart

@@ -1959,4 +1959,29 @@ class AppLocalizationsDe extends AppLocalizations {
   String workoutRpmValue(int rpm) {
     return '$rpm U/min';
   }
+
+  @override
+  String get recordWheel => 'Radumfang';
+
+  @override
+  String recordWheelMeasured(int mm) {
+    return '$mm mm, per GPS gemessen';
+  }
+
+  @override
+  String recordWheelTyped(int mm) {
+    return '$mm mm, wie du ihn eingegeben hast';
+  }
+
+  @override
+  String recordWheelDefault(int mm) {
+    return '$mm mm, bis GPS ihn auf 2 km Fahrt gemessen hat';
+  }
+
+  @override
+  String get recordWheelHint =>
+      'In Millimetern, wie auf dem Reifen (700×25C: 2105); leer, damit GPS ihn misst';
+
+  @override
+  String get recordWheelSave => 'Speichern';
 }

apps/train/halkyon_train_flutter/lib/l10n/app_localizations_en.dart

@@ -1947,6 +1947,31 @@ class AppLocalizationsEn extends AppLocalizations {
   String workoutRpmValue(int rpm) {
     return '$rpm rpm';
   }
+
+  @override
+  String get recordWheel => 'Wheel circumference';
+
+  @override
+  String recordWheelMeasured(int mm) {
+    return '$mm mm, measured by GPS';
+  }
+
+  @override
+  String recordWheelTyped(int mm) {
+    return '$mm mm, as you typed it';
+  }
+
+  @override
+  String recordWheelDefault(int mm) {
+    return '$mm mm until GPS has measured it on a ride of 2 km';
+  }
+
+  @override
+  String get recordWheelHint =>
+      'In millimetres, as the tyre says (700×25C: 2105); empty to have GPS measure it';
+
+  @override
+  String get recordWheelSave => 'Save';
 }
 
 /// The translations for English, as used in the United Kingdom (`en_GB`).