feat(mobile): show build number with version in settings (#7697)

Mobile Settings now identifies the installed build as e.g. `v0.16.0
(432)` rather than just `v0.16.0`. If the platform supplies no build
number, the footer keeps the existing version-only display.

| Before | After |
| --- | --- |
| Marketing version only | Version and native build number |
| ![Before:
v0.16.0](https://raw.githubusercontent.com/block/buzz/e8449f63d1fabe80ff86d395ac1177912c5d1bc5/pr-7697--before.png)
| ![After: v0.16.0
(432)](https://raw.githubusercontent.com/block/buzz/e8449f63d1fabe80ff86d395ac1177912c5d1bc5/pr-7697--after.png)
|

---------

Signed-off-by: Tom Brow <tomb@block.xyz>

crates/buzz-relay/src/handlers/event.rs

@@ -1523,7 +1523,7 @@ mod tests {
                 conn_id: Uuid::new_v4(),
                 tenant: tenant.clone(),
                 remote_addr: "127.0.0.1:1234".parse().unwrap(),
-                auth_state: RwLock::new(crate::connection::AuthState::Authenticated(
+                auth_state: std::sync::Mutex::new(crate::connection::AuthState::Authenticated(
                     buzz_auth::AuthContext {
                         pubkey: keys.public_key(),
                         scopes: vec![],
@@ -1668,7 +1668,7 @@ mod tests {
                 conn_id: Uuid::new_v4(),
                 tenant: tenant.clone(),
                 remote_addr: "127.0.0.1:1234".parse().unwrap(),
-                auth_state: RwLock::new(crate::connection::AuthState::Authenticated(
+                auth_state: std::sync::Mutex::new(crate::connection::AuthState::Authenticated(
                     buzz_auth::AuthContext {
                         pubkey: keys.public_key(),
                         scopes: vec![],

mobile/lib/features/settings/settings_page.dart

@@ -225,7 +225,10 @@ class SettingsPage extends HookConsumerWidget {
             ),
           ),
           if (packageInfo.hasData)
-            _VersionFooter(version: packageInfo.data!.version),
+            _VersionFooter(
+              version: packageInfo.data!.version,
+              buildNumber: packageInfo.data!.buildNumber,
+            ),
         ],
       ),
     );
@@ -233,9 +236,10 @@ class SettingsPage extends HookConsumerWidget {
 }
 
 class _VersionFooter extends StatelessWidget {
-  const _VersionFooter({required this.version});
+  const _VersionFooter({required this.version, required this.buildNumber});
 
   final String version;
+  final String buildNumber;
 
   @override
   Widget build(BuildContext context) {
@@ -245,7 +249,7 @@ class _VersionFooter extends StatelessWidget {
         padding: const EdgeInsets.only(bottom: Grid.xs, top: Grid.xxs),
         child: Center(
           child: Text(
-            'v$version',
+            buildNumber.isEmpty ? 'v$version' : 'v$version ($buildNumber)',
             style: context.textTheme.bodySmall?.copyWith(
               color: context.colors.onSurfaceVariant.withValues(alpha: 0.6),
             ),

mobile/test/features/settings/settings_page_loading_test.dart

@@ -0,0 +1,69 @@
+import 'dart:async';
+
+import 'package:buzz/features/settings/settings_page.dart';
+import 'package:buzz/shared/community/community_membership_provider.dart';
+import 'package:buzz/shared/theme/theme.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  testWidgets('settings remains usable while package metadata loads', (
+    tester,
+  ) async {
+    final metadata = Completer<Map<String, String>>();
+    const channel = MethodChannel('dev.fluttercommunity.plus/package_info');
+    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+      channel,
+      (_) => metadata.future,
+    );
+    addTearDown(
+      () => tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        channel,
+        null,
+      ),
+    );
+    SharedPreferences.setMockInitialValues({});
+    final prefs = await SharedPreferences.getInstance();
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [
+          savedPrefsProvider.overrideWithValue(prefs),
+          currentCommunityRoleProvider.overrideWithValue(
+            const AsyncData<CommunityMemberRole?>(CommunityMemberRole.admin),
+          ),
+        ],
+        child: MaterialApp(
+          theme: AppTheme.light(),
+          builder: (context, child) => MediaQuery(
+            data: MediaQuery.of(
+              context,
+            ).copyWith(textScaler: TextScaler.linear(2)),
+            child: child!,
+          ),
+          home: SettingsPage(
+            profileHeader: const SizedBox.shrink(),
+            invitePageBuilder: (_) => const SizedBox.shrink(),
+            identityRecoveryPageBuilder: (_) => const SizedBox.shrink(),
+          ),
+        ),
+      ),
+    );
+    expect(find.text('Invite to community'), findsOneWidget);
+
+    expect(find.text('v0.16.0 (432)'), findsNothing);
+    expect(find.byTooltip('Close settings'), findsOneWidget);
+    metadata.complete({
+      'appName': 'Buzz',
+      'packageName': 'xyz.block.buzz',
+      'version': '0.16.0',
+      'buildNumber': '432',
+      'buildSignature': '',
+    });
+    await tester.pumpAndSettle();
+    expect(find.text('v0.16.0 (432)'), findsOneWidget);
+    expect(tester.takeException(), isNull);
+  });
+}

mobile/test/features/settings/settings_page_test.dart

@@ -11,9 +11,71 @@ import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
+  setUp(() {
+    PackageInfo.setMockInitialValues(
+      appName: 'Buzz',
+      packageName: 'xyz.block.buzz',
+      version: '0.16.0',
+      buildNumber: '432',
+      buildSignature: '',
+    );
+  });
+
+  for (final buildNumber in ['432', '', '2147483647']) {
+    testWidgets('shows version with build number "$buildNumber"', (
+      tester,
+    ) async {
+      tester.view.physicalSize = const Size(320, 700);
+      tester.view.devicePixelRatio = 1;
+      addTearDown(tester.view.resetPhysicalSize);
+      addTearDown(tester.view.resetDevicePixelRatio);
+      PackageInfo.setMockInitialValues(
+        appName: 'Buzz',
+        packageName: 'xyz.block.buzz',
+        version: '0.16.0',
+        buildNumber: buildNumber,
+        buildSignature: '',
+      );
+      SharedPreferences.setMockInitialValues({});
+      final prefs = await SharedPreferences.getInstance();
+      await tester.pumpWidget(
+        ProviderScope(
+          overrides: [
+            savedPrefsProvider.overrideWithValue(prefs),
+            currentCommunityRoleProvider.overrideWithValue(
+              const AsyncData<CommunityMemberRole?>(CommunityMemberRole.admin),
+            ),
+          ],
+          child: MaterialApp(
+            theme: AppTheme.light(),
+            builder: (context, child) => MediaQuery(
+              data: MediaQuery.of(
+                context,
+              ).copyWith(textScaler: TextScaler.linear(2)),
+              child: child!,
+            ),
+            home: SettingsPage(
+              profileHeader: const SizedBox.shrink(),
+              invitePageBuilder: (_) => const SizedBox.shrink(),
+              identityRecoveryPageBuilder: (_) => const SizedBox.shrink(),
+            ),
+          ),
+        ),
+      );
+      expect(find.text('Invite to community'), findsOneWidget);
+      await tester.pumpAndSettle();
+      expect(
+        find.text(buildNumber.isEmpty ? 'v0.16.0' : 'v0.16.0 ($buildNumber)'),
+        findsOneWidget,
+      );
+      expect(tester.takeException(), isNull);
+    });
+  }
+
   testWidgets('shows the persisted per-community push opt-in on iOS', (
     tester,
   ) async {