fix(mobile): show the owner's agent name in the Solo chat header

The existing-chat header and pending-change label preferred the agent's
self-published profile name over the owner's 30177 inventory name. Prefer
the directory name and keep the profile for the avatar.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tom Brow <tomb@block.xyz>

mobile/lib/features/channels/me/me_chat_assistant.dart

@@ -89,16 +89,17 @@ useMeChatAssistant(
       ? ref.watch(userCacheProvider)[selected] ??
             ref.read(userCacheProvider.notifier).get(selected)
       : null;
+  // The owner's inventory name outranks the agent's self-published profile.
   final name =
-      profile?.displayName ??
       agents
           .where((agent) => agent.pubkey == selected)
           .firstOrNull
-          ?.displayName;
+          ?.displayName ??
+      profile?.displayName;
   String agentName(String pubkey) {
     final names = [
-      ref.read(userCacheProvider)[pubkey]?.displayName,
       agents.where((a) => a.pubkey == pubkey).firstOrNull?.displayName,
+      ref.read(userCacheProvider)[pubkey]?.displayName,
     ];
     return names
             .whereType<String>()

mobile/test/features/channels/me/me_chat_assistant_test.dart

@@ -22,8 +22,9 @@ import 'package:shared_preferences/shared_preferences.dart';
 class _Profiles extends UserCacheNotifier {
   @override
   Map<String, UserProfile> build() => {
-    'a': const UserProfile(pubkey: 'a', displayName: 'Alpha'),
-    'b': const UserProfile(pubkey: 'b', displayName: 'Beta'),
+    // Self-published names differ so tests prove the owner's name wins.
+    'a': const UserProfile(pubkey: 'a', displayName: 'Confusable Alpha'),
+    'b': const UserProfile(pubkey: 'b', displayName: 'Confusable Beta'),
   };
 }
 

mobile/test/features/channels/me/me_page_test.dart

@@ -6,6 +6,9 @@ import 'package:flutter/services.dart';
 import 'package:nostr/nostr.dart' as nostr;
 import 'package:buzz/shared/relay/relay.dart';
 import 'package:buzz/shared/me/me_assistants.dart';
+import 'package:buzz/shared/mentions/agent_identity_provider.dart';
+import 'package:buzz/shared/profile/user_cache_provider.dart';
+import 'package:buzz/shared/profile/user_profile.dart';
 import 'package:buzz/shared/theme/buzz_icons.dart';
 import 'package:buzz/shared/widgets/frosted_app_bar.dart';
 import 'package:flutter/material.dart';
@@ -328,8 +331,11 @@ void main() {
           channelsProvider.overrideWith(FakeChannels.new),
           meAssistantsProvider.overrideWith((ref) async {
             directoryLoads++;
-            return [];
+            return const [
+              AgentDirectoryEntry(pubkey: 'agent', displayName: 'Owner Name'),
+            ];
           }),
+          userCacheProvider.overrideWith(_ConfusableProfiles.new),
         ],
         child: MaterialApp(theme: AppTheme.light(), home: const MePage()),
       ),
@@ -347,7 +353,14 @@ void main() {
     final args = calls.single.arguments as Map;
     expect(args['title'], 'New chat');
     expect(args['placeholder'], 'Chat name');
-    expect(args['assistants'], isEmpty);
+    expect(args['assistants'], [
+      {
+        'id': 'agent',
+        'name': 'Owner Name',
+        'artworkScale': '1',
+        'avatarUrl': '',
+      },
+    ]);
     expect(args['projects'], [
       {'id': 'mobile', 'name': 'Mobile app'},
     ]);
@@ -471,3 +484,10 @@ void main() {
     expect(find.text('A place to work with your agents'), findsNothing);
   });
 }
+
+class _ConfusableProfiles extends UserCacheNotifier {
+  @override
+  Map<String, UserProfile> build() => {
+    'agent': const UserProfile(pubkey: 'agent', displayName: 'Confusable Name'),
+  };
+}