feat(#550): show observers + observations; top-banner refresh feedback

Badge stays observers-primary; tooltip/long-press now read 'N observers . M
observations' so they reconcile with CoreScope's 'Observations (N)' feed (the
two are distinct metrics: 15 distinct observers vs 34 total sightings). Refresh
feedback moved from a bottom snackbar to an auto-dismissed top MaterialBanner,
out of the way of the composer. Part of #524.

Agent: QuietSnow (session 31eaba02)

lib/connector/meshcore_connector.dart

@@ -4789,17 +4789,23 @@ class MeshCoreConnector extends ChangeNotifier {
       for (final secs in _coreScopePollSecs) {
         await Future<void>.delayed(Duration(seconds: secs));
         if (!isConnected) return;
-        final count = await _coreScopeService.fetchObserverCount(pkt.hashHex);
-        if (count == null) continue;
-        if (count > best) {
-          best = count;
+        final counts = await _coreScopeService.fetchCounts(pkt.hashHex);
+        if (counts == null) continue;
+        if (counts.observers > best) {
+          best = counts.observers;
           flat = 0;
           _updateChannelMessageById(
             channelIndex,
             messageId,
-            (m) => m.copyWith(coreScopeObserverCount: count),
+            (m) => m.copyWith(
+              coreScopeObserverCount: counts.observers,
+              coreScopeObservationCount: counts.observations,
+            ),
+          );
+          appLogger.info(
+            'observers=${counts.observers} observations=${counts.observations}',
+            tag: 'CoreScope',
           );
-          appLogger.info('observer count=$count', tag: 'CoreScope');
           notifyListeners();
         } else if (++flat >= _coreScopeStableChecks) {
           return; // stabilised
@@ -4814,21 +4820,26 @@ class MeshCoreConnector extends ChangeNotifier {
   }
 
   /// Tap-to-refresh: re-query CoreScope for a message's stored on-air hash and
-  /// bump the observer count if it grew (counts only ever climb). Returns the
-  /// fetched count (or null on failure / no stored hash) so the UI can confirm.
-  Future<int?> refreshCoreScopeObserverCount(
+  /// bump the counts if they grew (they only ever climb). Returns the fetched
+  /// counts (or null on failure / no stored hash) so the UI can confirm.
+  Future<CoreScopeCounts?> refreshCoreScopeCounts(
     int channelIndex,
     String messageId,
     String hashHex,
   ) async {
-    final count = await _coreScopeService.fetchObserverCount(hashHex);
-    if (count == null) return null;
+    final counts = await _coreScopeService.fetchCounts(hashHex);
+    if (counts == null) return null;
     _updateChannelMessageById(channelIndex, messageId, (m) {
       final current = m.coreScopeObserverCount ?? 0;
-      return count > current ? m.copyWith(coreScopeObserverCount: count) : m;
+      return counts.observers >= current
+          ? m.copyWith(
+              coreScopeObserverCount: counts.observers,
+              coreScopeObservationCount: counts.observations,
+            )
+          : m;
     });
     notifyListeners();
-    return count;
+    return counts;
   }
 
   void _updateChannelMessageById(

lib/l10n/app_en.arb

@@ -886,6 +886,17 @@
   },
   "channel_coreScopeRefresh": "Refresh CoreScope observers",
   "channel_coreScopeRefreshFailed": "CoreScope unreachable",
+  "channel_coreScopeCounts": "{observers, plural, =1{1 observer} other{{observers} observers}} · {observations} observations",
+  "@channel_coreScopeCounts": {
+    "placeholders": {
+      "observers": {
+        "type": "int"
+      },
+      "observations": {
+        "type": "int"
+      }
+    }
+  },
   "chat_successes": "successes",
   "chat_score": "Score",
   "chat_removePath": "Remove path",

lib/l10n/app_localizations.dart

@@ -3100,6 +3100,12 @@ abstract class AppLocalizations {
   /// **'CoreScope unreachable'**
   String get channel_coreScopeRefreshFailed;
 
+  /// No description provided for @channel_coreScopeCounts.
+  ///
+  /// In en, this message translates to:
+  /// **'{observers, plural, =1{1 observer} other{{observers} observers}} · {observations} observations'**
+  String channel_coreScopeCounts(int observers, int observations);
+
   /// No description provided for @chat_successes.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_bg.dart

@@ -1719,6 +1719,17 @@ class AppLocalizationsBg extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Успехи';
 

lib/l10n/app_localizations_de.dart

@@ -1717,6 +1717,17 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Erfolgreich';
 

lib/l10n/app_localizations_en.dart

@@ -1687,6 +1687,17 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'successes';
 

lib/l10n/app_localizations_es.dart

@@ -1714,6 +1714,17 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Éxitos';
 

lib/l10n/app_localizations_fr.dart

@@ -1721,6 +1721,17 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Succès';
 

lib/l10n/app_localizations_hu.dart

@@ -1726,6 +1726,17 @@ class AppLocalizationsHu extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'sikerek';
 

lib/l10n/app_localizations_it.dart

@@ -1716,6 +1716,17 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'successi';
 

lib/l10n/app_localizations_ja.dart

@@ -1651,6 +1651,17 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => '成功事例';
 

lib/l10n/app_localizations_ko.dart

@@ -1647,6 +1647,17 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => '성공 사례';
 

lib/l10n/app_localizations_nl.dart

@@ -1704,6 +1704,17 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Succesvol';
 

lib/l10n/app_localizations_pl.dart

@@ -1729,6 +1729,17 @@ class AppLocalizationsPl extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Sukcesy';
 

lib/l10n/app_localizations_pt.dart

@@ -1713,6 +1713,17 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Sucessos';
 

lib/l10n/app_localizations_ru.dart

@@ -1717,6 +1717,17 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'успешно';
 

lib/l10n/app_localizations_sk.dart

@@ -1706,6 +1706,17 @@ class AppLocalizationsSk extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Úspechy';
 

lib/l10n/app_localizations_sl.dart

@@ -1702,6 +1702,17 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Uspešni';
 

lib/l10n/app_localizations_sv.dart

@@ -1697,6 +1697,17 @@ class AppLocalizationsSv extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'framgångar';
 

lib/l10n/app_localizations_uk.dart

@@ -1712,6 +1712,17 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => 'Успішно';
 

lib/l10n/app_localizations_zh.dart

@@ -1626,6 +1626,17 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get channel_coreScopeRefreshFailed => 'CoreScope unreachable';
 
+  @override
+  String channel_coreScopeCounts(int observers, int observations) {
+    String _temp0 = intl.Intl.pluralLogic(
+      observers,
+      locale: localeName,
+      other: '$observers observers',
+      one: '1 observer',
+    );
+    return '$_temp0 · $observations observations';
+  }
+
   @override
   String get chat_successes => '成功';
 

lib/models/channel_message.dart

@@ -56,6 +56,10 @@ class ChannelMessage {
   /// Unique observers CoreScope reports for this message's on-air packet
   /// (#524). Null until queried / when the feature is off. Transient.
   final int? coreScopeObserverCount;
+
+  /// Total observations (sightings) CoreScope reports for the same packet, the
+  /// "Observations (N)" number in its UI. Transient. See [coreScopeObserverCount].
+  final int? coreScopeObservationCount;
   final String? replyToMessageId;
   final String? replyToSenderName;
   final String? replyToText;
@@ -96,6 +100,7 @@ class ChannelMessage {
     this.packetHash,
     this.onAirHash,
     this.coreScopeObserverCount,
+    this.coreScopeObservationCount,
     this.replyToMessageId,
     this.replyToSenderName,
     this.replyToText,
@@ -144,6 +149,7 @@ class ChannelMessage {
     String? packetHash,
     String? onAirHash,
     int? coreScopeObserverCount,
+    int? coreScopeObservationCount,
     String? replyToMessageId,
     String? replyToSenderName,
     String? replyToText,
@@ -187,6 +193,8 @@ class ChannelMessage {
       onAirHash: onAirHash ?? this.onAirHash,
       coreScopeObserverCount:
           coreScopeObserverCount ?? this.coreScopeObserverCount,
+      coreScopeObservationCount:
+          coreScopeObservationCount ?? this.coreScopeObservationCount,
       replyToMessageId: replyToMessageId ?? this.replyToMessageId,
       replyToSenderName: replyToSenderName ?? this.replyToSenderName,
       replyToText: replyToText ?? this.replyToText,

lib/screens/channel_chat_screen.dart

@@ -1523,9 +1523,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
         if (isOutgoing && (message.coreScopeObserverCount ?? 0) > 0) ...[
           dot,
           Tooltip(
-            message: context.l10n.channel_coreScopeTooltip(
-              message.coreScopeObserverCount!,
-            ),
+            message: _coreScopeLabel(message),
             child: InkWell(
               onTap: message.onAirHash == null
                   ? null
@@ -1642,25 +1640,52 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     );
   }
 
+  String _coreScopeLabel(ChannelMessage message) {
+    final observers = message.coreScopeObserverCount ?? 0;
+    final observations = message.coreScopeObservationCount;
+    return observations == null
+        ? context.l10n.channel_coreScopeTooltip(observers)
+        : context.l10n.channel_coreScopeCounts(observers, observations);
+  }
+
   Future<void> _refreshCoreScope(ChannelMessage message) async {
     final hash = message.onAirHash;
     if (hash == null) return;
     final connector = context.read<MeshCoreConnector>();
     final l10n = context.l10n;
-    final count = await connector.refreshCoreScopeObserverCount(
+    final counts = await connector.refreshCoreScopeCounts(
       message.channelIndex ?? _currentChannel.index,
       message.messageId,
       hash,
     );
     if (!mounted) return;
-    showDismissibleSnackBar(
-      context,
-      content: Text(
-        count == null
-            ? l10n.channel_coreScopeRefreshFailed
-            : l10n.channel_coreScopeTooltip(count),
+    _showCoreScopeBanner(
+      counts == null
+          ? l10n.channel_coreScopeRefreshFailed
+          : l10n.channel_coreScopeCounts(counts.observers, counts.observations),
+    );
+  }
+
+  /// Top banner (out of the way of the composer), auto-dismissed after a few
+  /// seconds. Used for the CoreScope refresh result (#524).
+  void _showCoreScopeBanner(String message) {
+    final messenger = ScaffoldMessenger.of(context);
+    messenger.clearMaterialBanners();
+    messenger.showMaterialBanner(
+      MaterialBanner(
+        content: Text(message),
+        leading: const Icon(Icons.cloud_outlined),
+        actions: [
+          TextButton(
+            onPressed: messenger.hideCurrentMaterialBanner,
+            child: Text(context.l10n.common_ok),
+          ),
+        ],
       ),
     );
+    Future.delayed(const Duration(seconds: 4), () {
+      if (mounted) messenger.hideCurrentMaterialBanner();
+    });
   }
 
   void _retryChannelMessage(ChannelMessage message) {
@@ -1736,11 +1761,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                 leading: const Icon(Icons.cloud_outlined),
                 title: Text(context.l10n.channel_coreScopeRefresh),
                 subtitle: message.coreScopeObserverCount != null
-                    ? Text(
-                        context.l10n.channel_coreScopeTooltip(
-                          message.coreScopeObserverCount!,
-                        ),
-                      )
+                    ? Text(_coreScopeLabel(message))
                     : null,
                 onTap: () {
                   Navigator.pop(sheetContext);

lib/services/corescope_service.dart

@@ -7,6 +7,16 @@ import '../utils/app_logger.dart';
 /// Default CoreScope instance (OKIMesh). Owner-run; its read API is public.
 const String kDefaultCoreScopeHost = 'map.okimesh.org';
 
+/// The two counts CoreScope reports for a packet. [observers] is the number of
+/// distinct observers (the meaningful reach); [observations] is the total
+/// sightings, which counts one observer hearing the packet via several paths
+/// more than once (this is the "Observations (N)" number in CoreScope's UI).
+class CoreScopeCounts {
+  const CoreScopeCounts({required this.observers, required this.observations});
+  final int observers;
+  final int observations;
+}
+
 /// Queries a CoreScope instance for how many observers reported a given packet,
 /// keyed by the firmware/mesh packet hash (#524). Read-only and best-effort:
 /// any failure (offline, timeout, non-200, bad body, unknown packet) returns
@@ -24,10 +34,10 @@ class CoreScopeService {
   final bool useTls;
   final Duration timeout;
 
-  /// Unique observers that reported the packet with [packetHash]
-  /// (16 lowercase hex chars). Returns null on any error, or when CoreScope
-  /// has no record of the hash yet.
-  Future<int?> fetchObserverCount(String packetHash) async {
+  /// Distinct observers and total observations for [packetHash] (16 lowercase
+  /// hex chars). Returns null on any error, or when CoreScope has no record of
+  /// the hash yet.
+  Future<CoreScopeCounts?> fetchCounts(String packetHash) async {
     if (packetHash.isEmpty) return null;
     final uri = Uri(
       scheme: useTls ? 'https' : 'http',
@@ -58,13 +68,21 @@ class CoreScopeService {
       }
       final first = packets.first;
       if (first is! Map) return null;
-      final count = first['observer_count'];
-      final result = count is num ? count.toInt() : null;
+      final observers = first['observer_count'];
+      if (observers is! num) return null;
+      final observations = first['observation_count'];
+      final counts = CoreScopeCounts(
+        observers: observers.toInt(),
+        observations: observations is num
+            ? observations.toInt()
+            : observers.toInt(),
+      );
       appLogger.info(
-        'observer_count=$result for $packetHash',
+        'observers=${counts.observers} observations=${counts.observations} '
+        'for $packetHash',
         tag: 'CoreScope',
       );
-      return result;
+      return counts;
     } catch (e) {
       appLogger.warn('Query failed for $packetHash: $e', tag: 'CoreScope');
       return null;

test/services/corescope_service_test.dart

@@ -4,27 +4,43 @@ import 'package:http/testing.dart';
 import 'package:meshcore_open/services/corescope_service.dart';
 
 void main() {
-  group('CoreScopeService.fetchObserverCount', () {
-    test('parses observer_count from a grouped-by-hash response', () async {
-      late Uri captured;
+  group('CoreScopeService.fetchCounts', () {
+    test(
+      'parses observer + observation counts from a grouped response',
+      () async {
+        late Uri captured;
+        final service = CoreScopeService(
+          host: 'map.okimesh.org',
+          client: MockClient((req) async {
+            captured = req.url;
+            return http.Response(
+              '{"packets":[{"hash":"abc123","observer_count":15,'
+              '"observation_count":34}],"total":1}',
+              200,
+            );
+          }),
+        );
+
+        final counts = await service.fetchCounts('abc123');
+        expect(counts, isNotNull);
+        expect(counts!.observers, 15);
+        expect(counts.observations, 34);
+        expect(captured.host, 'map.okimesh.org');
+        expect(captured.path, '/api/packets');
+        expect(captured.queryParameters['hash'], 'abc123');
+        expect(captured.queryParameters['groupByHash'], 'true');
+      },
+    );
+
+    test('falls back to observers when observation_count is absent', () async {
       final service = CoreScopeService(
-        host: 'map.okimesh.org',
-        client: MockClient((req) async {
-          captured = req.url;
-          return http.Response(
-            '{"packets":[{"hash":"abc123","observer_count":7}],"total":1}',
-            200,
-          );
-        }),
+        client: MockClient(
+          (_) async => http.Response('{"packets":[{"observer_count":9}]}', 200),
+        ),
       );
-
-      expect(await service.fetchObserverCount('abc123'), 7);
-      // Correct endpoint + query built from the hash.
-      expect(captured.scheme, 'https');
-      expect(captured.host, 'map.okimesh.org');
-      expect(captured.path, '/api/packets');
-      expect(captured.queryParameters['hash'], 'abc123');
-      expect(captured.queryParameters['groupByHash'], 'true');
+      final counts = await service.fetchCounts('abc123');
+      expect(counts!.observers, 9);
+      expect(counts.observations, 9);
     });
 
     test('returns null when CoreScope has no record (empty packets)', () async {
@@ -33,28 +49,28 @@ void main() {
           (_) async => http.Response('{"packets":[],"total":0}', 200),
         ),
       );
-      expect(await service.fetchObserverCount('deadbeef'), isNull);
+      expect(await service.fetchCounts('deadbeef'), isNull);
     });
 
     test('returns null on non-200', () async {
       final service = CoreScopeService(
         client: MockClient((_) async => http.Response('nope', 503)),
       );
-      expect(await service.fetchObserverCount('abc123'), isNull);
+      expect(await service.fetchCounts('abc123'), isNull);
     });
 
     test('returns null on malformed body', () async {
       final service = CoreScopeService(
         client: MockClient((_) async => http.Response('not json', 200)),
       );
-      expect(await service.fetchObserverCount('abc123'), isNull);
+      expect(await service.fetchCounts('abc123'), isNull);
     });
 
     test('returns null (never throws) on transport failure', () async {
       final service = CoreScopeService(
         client: MockClient((_) async => throw Exception('offline')),
       );
-      expect(await service.fetchObserverCount('abc123'), isNull);
+      expect(await service.fetchCounts('abc123'), isNull);
     });
 
     test(
@@ -67,7 +83,7 @@ void main() {
             return http.Response('{}', 200);
           }),
         );
-        expect(await service.fetchObserverCount(''), isNull);
+        expect(await service.fetchCounts(''), isNull);
         expect(called, isFalse);
       },
     );

untranslated.json

@@ -54,6 +54,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -156,6 +157,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -258,6 +260,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -360,6 +363,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -462,6 +466,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -564,6 +569,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -666,6 +672,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -768,6 +775,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -870,6 +878,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -972,6 +981,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1074,6 +1084,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1176,6 +1187,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1278,6 +1290,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1380,6 +1393,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1482,6 +1496,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1584,6 +1599,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",
@@ -1686,6 +1702,7 @@
     "channel_coreScopeTooltip",
     "channel_coreScopeRefresh",
     "channel_coreScopeRefreshFailed",
+    "channel_coreScopeCounts",
     "map_alwaysShowNames",
     "path_suggestedRoute",
     "path_searchRepeaters",