feat(#550): CoreScope orchestration + Experimental toggle + observer badge

After a channel send, when firmware advertises 0xC6 (cap2 0x08 + ver>=22) AND
the owner enabled the feature, the connector queries the packet hash, then
CoreScope for observer_count, and stamps it on the message (background,
best-effort). Adds the coreScopeObserverCountEnabled AppSettings flag, a gated
switch in the #509 Experimental section (disabled until the radio supports the
capability), and a distinct cloud badge next to the radio-heard count. All
inert until the firmware PR (#611) lands. Completes the client side of #524.

Agent: QuietSnow (session 31eaba02)

lib/connector/meshcore_connector.dart

@@ -19,6 +19,7 @@ import '../models/path_selection.dart';
 import '../models/translation_support.dart';
 import '../helpers/channel_send_timestamp.dart';
 import '../helpers/pending_reactions.dart';
+import '../services/corescope_service.dart';
 import '../helpers/pocketmesh_reaction.dart';
 import '../helpers/reaction_helper.dart';
 import '../helpers/time_anomaly.dart';
@@ -296,6 +297,11 @@ class MeshCoreConnector extends ChangeNotifier {
   bool _caplogAwaitingStart = false;
   Completer<CaplogAck>? _caplogAckCompleter;
   Completer<CaplogDeviceStatus>? _caplogStatusCompleter;
+
+  /// Outstanding 0xC6 packet-hash queries, keyed "ts_chan" so a reply matches
+  /// its request without relying on ordering (#524).
+  final Map<String, Completer<OffbandPktHash?>> _pendingPktHashCompleters = {};
+  final CoreScopeService _coreScopeService = CoreScopeService();
   int _caplogChunks = 0; // CHUNK frames in the active download (diagnostic)
   String? _firmwareVersion;
   String? _deviceModel;
@@ -631,6 +637,16 @@ class MeshCoreConnector extends ChangeNotifier {
   /// Whether this radio exposes a settable device notification scope (#475).
   bool get supportsNotifyScope => firmwareSupportsNotifyScope(_offbandCaps2);
 
+  /// Whether this radio answers the 0xC6 packet-hash query (#524/#611).
+  bool get supportsPktHash =>
+      firmwareSupportsPktHash(_offbandCaps2, _firmwareVerCode);
+
+  /// Whether to fetch CoreScope observer counts for outgoing channel messages:
+  /// firmware supports the hash query AND the owner enabled the feature.
+  bool get _coreScopeQueryActive =>
+      supportsPktHash &&
+      (_appSettingsService?.settings.coreScopeObserverCountEnabled ?? false);
+
   /// Whether the radio can actually be QUERIED, as opposed to merely reporting
   /// that it has the feature. False until firmware lands the get/set command,
   /// so no frame is emitted that nothing will answer. The distinction is real
@@ -3883,6 +3899,17 @@ class MeshCoreConnector extends ChangeNotifier {
         channelSendQueueId: message.messageId,
         expectsGenericAck: true,
       );
+      // Owner-only CoreScope observer count (#524): background, gated, and
+      // best-effort. Never blocks or fails the send.
+      if (_coreScopeQueryActive) {
+        unawaited(
+          _fetchAndStoreCoreScopeCount(
+            channel.index,
+            sendTsSecs,
+            message.messageId,
+          ),
+        );
+      }
     } catch (e) {
       // Clear the stuck queue id and surface the failure in the chat bubble
       // instead of leaving the message pending and blocking the queue (#395).
@@ -4679,6 +4706,90 @@ class MeshCoreConnector extends ChangeNotifier {
     }
   }
 
+  /// Ask firmware for the on-air packet hash of a channel message we sent,
+  /// keyed by (ts, chan) (0xC6, #524). Returns null on timeout / error frame.
+  Future<OffbandPktHash?> _queryPacketHash(
+    int ts,
+    int chan, {
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
+    final key = '${ts}_$chan';
+    final completer = Completer<OffbandPktHash?>();
+    _pendingPktHashCompleters[key] = completer;
+    final timer = Timer(timeout, () {
+      if (!completer.isCompleted) completer.complete(null);
+    });
+    try {
+      await sendFrame(buildOffbandPktHashGetFrame(ts, chan));
+      return await completer.future;
+    } catch (e) {
+      appLogger.warn('0xC6 query failed for $key: $e', tag: 'CoreScope');
+      return null;
+    } finally {
+      timer.cancel();
+      _pendingPktHashCompleters.remove(key);
+    }
+  }
+
+  /// Routes a 0xC6 reply to its waiting query. Success replies echo the key;
+  /// error/malformed frames are logged and left for the query to time out (the
+  /// error frame carries no key, so it cannot be correlated).
+  void _handleOffbandPktHashFrame(Uint8List frame) {
+    final parsed = parseOffbandPktHashReply(frame);
+    if (parsed == null) {
+      appLogger.warn('0xC6 error or malformed reply', tag: 'CoreScope');
+      return;
+    }
+    final key = '${parsed.timestamp}_${parsed.channelIdx}';
+    final completer = _pendingPktHashCompleters[key];
+    if (completer != null && !completer.isCompleted) {
+      completer.complete(parsed);
+    }
+  }
+
+  /// After sending a channel message, fetch its firmware hash then CoreScope's
+  /// observer count and stamp both on the message. Best-effort and gated; any
+  /// failure leaves the message showing radio-only.
+  Future<void> _fetchAndStoreCoreScopeCount(
+    int channelIndex,
+    int ts,
+    String messageId,
+  ) async {
+    try {
+      final pkt = await _queryPacketHash(ts, channelIndex);
+      if (pkt == null) return;
+      _updateChannelMessageById(
+        channelIndex,
+        messageId,
+        (m) => m.copyWith(onAirHash: pkt.hashHex),
+      );
+      final count = await _coreScopeService.fetchObserverCount(pkt.hashHex);
+      if (count == null) return;
+      _updateChannelMessageById(
+        channelIndex,
+        messageId,
+        (m) => m.copyWith(coreScopeObserverCount: count),
+      );
+      notifyListeners();
+    } catch (e) {
+      appLogger.warn(
+        'CoreScope observer-count fetch failed: $e',
+        tag: 'CoreScope',
+      );
+    }
+  }
+
+  void _updateChannelMessageById(
+    int channelIndex,
+    String messageId,
+    ChannelMessage Function(ChannelMessage) transform,
+  ) {
+    final messages = _channelMessages[channelIndex];
+    if (messages == null) return;
+    final i = messages.indexWhere((m) => m.messageId == messageId);
+    if (i >= 0) messages[i] = transform(messages[i]);
+  }
+
   /// Called when a BLOCK_LIST dump ends. A truncated dump (early-END) is
   /// re-requested once the link settles; never derive removals from a partial
   /// pull. The union reconcile against the local list is wired in B4.
@@ -4871,6 +4982,9 @@ class MeshCoreConnector extends ChangeNotifier {
       case respCodeOffbandCaplog:
         _handleOffbandCaplogFrame(frame);
         break;
+      case cmdOffbandPktHash:
+        _handleOffbandPktHashFrame(frame);
+        break;
       case respCodeOffbandDeviceUi:
         _handleDeviceUiReply(frame);
         break;

lib/l10n/app_en.arb

@@ -218,6 +218,9 @@
   "settings_experimental": "Experimental",
   "settings_experimentalSubtitle": "Advanced and in-development features",
   "settings_experimentalDescription": "These features are experimental and may change or be removed at any time. They default to off.",
+  "settings_coreScopeObserverCount": "CoreScope observer counts",
+  "settings_coreScopeObserverCountSubtitle": "On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.",
+  "settings_coreScopeObserverCountUnsupported": "Requires a firmware build with packet-hash support (v22+).",
   "settings_experimentalHide": "Hide Experimental section",
   "settings_experimentalHideSubtitle": "Unlock again anytime with 7 taps on the version row.",
   "settings_experimentalUnlocked": "Experimental features unlocked",
@@ -873,6 +876,14 @@
       }
     }
   },
+  "channel_coreScopeTooltip": "Seen by {count, plural, =1{1 CoreScope observer} other{{count} CoreScope observers}}",
+  "@channel_coreScopeTooltip": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "chat_successes": "successes",
   "chat_score": "Score",
   "chat_removePath": "Remove path",

lib/l10n/app_localizations.dart

@@ -1108,6 +1108,24 @@ abstract class AppLocalizations {
   /// **'These features are experimental and may change or be removed at any time. They default to off.'**
   String get settings_experimentalDescription;
 
+  /// No description provided for @settings_coreScopeObserverCount.
+  ///
+  /// In en, this message translates to:
+  /// **'CoreScope observer counts'**
+  String get settings_coreScopeObserverCount;
+
+  /// No description provided for @settings_coreScopeObserverCountSubtitle.
+  ///
+  /// In en, this message translates to:
+  /// **'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.'**
+  String get settings_coreScopeObserverCountSubtitle;
+
+  /// No description provided for @settings_coreScopeObserverCountUnsupported.
+  ///
+  /// In en, this message translates to:
+  /// **'Requires a firmware build with packet-hash support (v22+).'**
+  String get settings_coreScopeObserverCountUnsupported;
+
   /// No description provided for @settings_experimentalHide.
   ///
   /// In en, this message translates to:
@@ -3064,6 +3082,12 @@ abstract class AppLocalizations {
   /// **'Heard {count, plural, =1{1 repeat} other{{count} repeats}}'**
   String channel_heardTooltip(int count);
 
+  /// No description provided for @channel_coreScopeTooltip.
+  ///
+  /// In en, this message translates to:
+  /// **'Seen by {count, plural, =1{1 CoreScope observer} other{{count} CoreScope observers}}'**
+  String channel_coreScopeTooltip(int count);
+
   /// No description provided for @chat_successes.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_bg.dart

@@ -551,6 +551,17 @@ class AppLocalizationsBg extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1691,6 +1702,17 @@ class AppLocalizationsBg extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Успехи';
 

lib/l10n/app_localizations_de.dart

@@ -548,6 +548,17 @@ class AppLocalizationsDe extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1689,6 +1700,17 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Erfolgreich';
 

lib/l10n/app_localizations_en.dart

@@ -539,6 +539,17 @@ class AppLocalizationsEn extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1659,6 +1670,17 @@ class AppLocalizationsEn extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'successes';
 

lib/l10n/app_localizations_es.dart

@@ -549,6 +549,17 @@ class AppLocalizationsEs extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1686,6 +1697,17 @@ class AppLocalizationsEs extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Éxitos';
 

lib/l10n/app_localizations_fr.dart

@@ -553,6 +553,17 @@ class AppLocalizationsFr extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1693,6 +1704,17 @@ class AppLocalizationsFr extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Succès';
 

lib/l10n/app_localizations_hu.dart

@@ -551,6 +551,17 @@ class AppLocalizationsHu extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1698,6 +1709,17 @@ class AppLocalizationsHu extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'sikerek';
 

lib/l10n/app_localizations_it.dart

@@ -551,6 +551,17 @@ class AppLocalizationsIt extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1688,6 +1699,17 @@ class AppLocalizationsIt extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'successi';
 

lib/l10n/app_localizations_ja.dart

@@ -525,6 +525,17 @@ class AppLocalizationsJa extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1623,6 +1634,17 @@ class AppLocalizationsJa extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => '成功事例';
 

lib/l10n/app_localizations_ko.dart

@@ -525,6 +525,17 @@ class AppLocalizationsKo extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1619,6 +1630,17 @@ class AppLocalizationsKo extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => '성공 사례';
 

lib/l10n/app_localizations_nl.dart

@@ -545,6 +545,17 @@ class AppLocalizationsNl extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1676,6 +1687,17 @@ class AppLocalizationsNl extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Succesvol';
 

lib/l10n/app_localizations_pl.dart

@@ -553,6 +553,17 @@ class AppLocalizationsPl extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1701,6 +1712,17 @@ class AppLocalizationsPl extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Sukcesy';
 

lib/l10n/app_localizations_pt.dart

@@ -551,6 +551,17 @@ class AppLocalizationsPt extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1685,6 +1696,17 @@ class AppLocalizationsPt extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Sucessos';
 

lib/l10n/app_localizations_ru.dart

@@ -550,6 +550,17 @@ class AppLocalizationsRu extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1689,6 +1700,17 @@ class AppLocalizationsRu extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'успешно';
 

lib/l10n/app_localizations_sk.dart

@@ -545,6 +545,17 @@ class AppLocalizationsSk extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1678,6 +1689,17 @@ class AppLocalizationsSk extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Úspechy';
 

lib/l10n/app_localizations_sl.dart

@@ -543,6 +543,17 @@ class AppLocalizationsSl extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1674,6 +1685,17 @@ class AppLocalizationsSl extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Uspešni';
 

lib/l10n/app_localizations_sv.dart

@@ -540,6 +540,17 @@ class AppLocalizationsSv extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1669,6 +1680,17 @@ class AppLocalizationsSv extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'framgångar';
 

lib/l10n/app_localizations_uk.dart

@@ -547,6 +547,17 @@ class AppLocalizationsUk extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1684,6 +1695,17 @@ class AppLocalizationsUk extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => 'Успішно';
 

lib/l10n/app_localizations_zh.dart

@@ -518,6 +518,17 @@ class AppLocalizationsZh extends AppLocalizations {
   String get settings_experimentalDescription =>
       'These features are experimental and may change or be removed at any time. They default to off.';
 
+  @override
+  String get settings_coreScopeObserverCount => 'CoreScope observer counts';
+
+  @override
+  String get settings_coreScopeObserverCountSubtitle =>
+      'On outgoing channel messages, show how many CoreScope observers heard the packet, alongside radio-heard repeats. Needs internet.';
+
+  @override
+  String get settings_coreScopeObserverCountUnsupported =>
+      'Requires a firmware build with packet-hash support (v22+).';
+
   @override
   String get settings_experimentalHide => 'Hide Experimental section';
 
@@ -1598,6 +1609,17 @@ class AppLocalizationsZh extends AppLocalizations {
     return 'Heard $_temp0';
   }
 
+  @override
+  String channel_coreScopeTooltip(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count CoreScope observers',
+      one: '1 CoreScope observer',
+    );
+    return 'Seen by $_temp0';
+  }
+
   @override
   String get chat_successes => '成功';
 

lib/models/app_settings.dart

@@ -144,6 +144,11 @@ class AppSettings {
   /// the version row (#509). Not a security boundary, just keeps advanced/
   /// me-centric toggles out of the default UI. Persists across restarts.
   final bool experimentalUnlocked;
+
+  /// Owner-only: show CoreScope-observed repeat counts on outgoing channel
+  /// messages (#524). Lives under the Experimental section, default off, and
+  /// only takes effect when the firmware supports the 0xC6 packet-hash query.
+  final bool coreScopeObserverCountEnabled;
   final Map<String, String> batteryChemistryByDeviceId;
   final Map<String, String> batteryChemistryByRepeaterId;
   final UnitSystem unitSystem;
@@ -223,6 +228,7 @@ class AppSettings {
     this.languageOverride,
     this.appDebugLogEnabled = false,
     this.experimentalUnlocked = false,
+    this.coreScopeObserverCountEnabled = false,
     Map<String, String>? batteryChemistryByDeviceId,
     Map<String, String>? batteryChemistryByRepeaterId,
     this.unitSystem = UnitSystem.metric,
@@ -290,6 +296,7 @@ class AppSettings {
       'language_override': languageOverride,
       'app_debug_log_enabled': appDebugLogEnabled,
       'experimental_unlocked': experimentalUnlocked,
+      'corescope_observer_count_enabled': coreScopeObserverCountEnabled,
       'battery_chemistry_by_device_id': batteryChemistryByDeviceId,
       'battery_chemistry_by_repeater_id': batteryChemistryByRepeaterId,
       'unit_system': unitSystem.value,
@@ -388,6 +395,8 @@ class AppSettings {
       languageOverride: json['language_override'] as String?,
       appDebugLogEnabled: json['app_debug_log_enabled'] as bool? ?? false,
       experimentalUnlocked: json['experimental_unlocked'] as bool? ?? false,
+      coreScopeObserverCountEnabled:
+          json['corescope_observer_count_enabled'] as bool? ?? false,
       batteryChemistryByDeviceId:
           (json['battery_chemistry_by_device_id'] as Map?)?.map(
             (key, value) => MapEntry(key.toString(), value.toString()),
@@ -506,6 +515,7 @@ class AppSettings {
     Object? languageOverride = _unset,
     bool? appDebugLogEnabled,
     bool? experimentalUnlocked,
+    bool? coreScopeObserverCountEnabled,
     Map<String, String>? batteryChemistryByDeviceId,
     Map<String, String>? batteryChemistryByRepeaterId,
     UnitSystem? unitSystem,
@@ -566,6 +576,8 @@ class AppSettings {
           : languageOverride as String?,
       appDebugLogEnabled: appDebugLogEnabled ?? this.appDebugLogEnabled,
       experimentalUnlocked: experimentalUnlocked ?? this.experimentalUnlocked,
+      coreScopeObserverCountEnabled:
+          coreScopeObserverCountEnabled ?? this.coreScopeObserverCountEnabled,
       batteryChemistryByDeviceId:
           batteryChemistryByDeviceId ?? this.batteryChemistryByDeviceId,
       batteryChemistryByRepeaterId:

lib/screens/channel_chat_screen.dart

@@ -1517,6 +1517,24 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
             ),
           ),
         ],
+        // CoreScope observer count (#524), shown parallel to the radio-heard
+        // count with a distinct icon, never merged into one number.
+        if (isOutgoing && (message.coreScopeObserverCount ?? 0) > 0) ...[
+          dot,
+          Tooltip(
+            message: context.l10n.channel_coreScopeTooltip(
+              message.coreScopeObserverCount!,
+            ),
+            child: Row(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Icon(Icons.cloud_outlined, size: 12, color: metaColor),
+                const SizedBox(width: 4),
+                Text('${message.coreScopeObserverCount}', style: metaStyle),
+              ],
+            ),
+          ),
+        ],
         if (isOutgoing) ...[
           const SizedBox(width: 6),
           Icon(

lib/screens/settings_screen.dart

@@ -233,7 +233,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
 
   Widget _experimentalPane(BuildContext context) {
     final l10n = context.l10n;
-    final settingsService = context.read<AppSettingsService>();
+    final settingsService = context.watch<AppSettingsService>();
+    final supportsPktHash = context.select<MeshCoreConnector, bool>(
+      (c) => c.supportsPktHash,
+    );
     return ListView(
       padding: const EdgeInsets.all(16),
       children: [
@@ -244,8 +247,25 @@ class _SettingsScreenState extends State<SettingsScreen> {
           ),
         ),
         const SizedBox(height: 16),
-        // Future me-centric/experimental toggles land here (e.g. Fast Sync
-        // #118, CoreScope repeats #524). Empty of features until they arrive.
+        // CoreScope observer counts (#524). Disabled until the connected radio
+        // advertises the 0xC6 packet-hash capability.
+        Card(
+          child: SwitchListTile(
+            secondary: const Icon(Icons.cloud_outlined),
+            title: Text(l10n.settings_coreScopeObserverCount),
+            subtitle: Text(
+              supportsPktHash
+                  ? l10n.settings_coreScopeObserverCountSubtitle
+                  : l10n.settings_coreScopeObserverCountUnsupported,
+            ),
+            value: settingsService.settings.coreScopeObserverCountEnabled,
+            onChanged: supportsPktHash
+                ? (value) =>
+                      settingsService.setCoreScopeObserverCountEnabled(value)
+                : null,
+          ),
+        ),
+        const SizedBox(height: 16),
         // A plain action (not a switch): "hide" is a one-shot, and a switch
         // whose ON state means "hidden" read backwards.
         Card(

lib/services/app_settings_service.dart

@@ -186,6 +186,12 @@ class AppSettingsService extends ChangeNotifier {
     await updateSettings(_settings.copyWith(experimentalUnlocked: value));
   }
 
+  Future<void> setCoreScopeObserverCountEnabled(bool value) async {
+    await updateSettings(
+      _settings.copyWith(coreScopeObserverCountEnabled: value),
+    );
+  }
+
   Future<void> setMapShowDiscoveryContacts(bool value) async {
     await updateSettings(_settings.copyWith(mapShowDiscoveryContacts: value));
   }

untranslated.json

@@ -15,6 +15,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -48,6 +51,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -111,6 +115,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -144,6 +151,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -207,6 +215,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -240,6 +251,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -303,6 +315,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -336,6 +351,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -399,6 +415,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -432,6 +451,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -495,6 +515,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -528,6 +551,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -591,6 +615,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -624,6 +651,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -687,6 +715,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -720,6 +751,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -783,6 +815,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -816,6 +851,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -879,6 +915,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -912,6 +951,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -975,6 +1015,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1008,6 +1051,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1071,6 +1115,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1104,6 +1151,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1167,6 +1215,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1200,6 +1251,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1263,6 +1315,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1296,6 +1351,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1359,6 +1415,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1392,6 +1451,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1455,6 +1515,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1488,6 +1551,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1551,6 +1615,9 @@
     "settings_experimental",
     "settings_experimentalSubtitle",
     "settings_experimentalDescription",
+    "settings_coreScopeObserverCount",
+    "settings_coreScopeObserverCountSubtitle",
+    "settings_coreScopeObserverCountUnsupported",
     "settings_experimentalHide",
     "settings_experimentalHideSubtitle",
     "settings_experimentalUnlocked",
@@ -1584,6 +1651,7 @@
     "debugLog_logSaved",
     "debugLog_logUnavailable",
     "channel_heardTooltip",
+    "channel_coreScopeTooltip",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",