fix(mobile): keep startup independent of crash reporting

Co-authored-by: npub1ft62tztwwm2x9xamk25smmuaj4sfckdkldksruf2x2jwqalffkrq0g7arr <4af4a5896e76d4629bbbb2a90def9d95609c59b6fb6d01f12a32a4e077e94d86@sprout-oss.stage.blox.sqprod.co>
Signed-off-by: npub1ft62tztwwm2x9xamk25smmuaj4sfckdkldksruf2x2jwqalffkrq0g7arr <4af4a5896e76d4629bbbb2a90def9d95609c59b6fb6d01f12a32a4e077e94d86@sprout-oss.stage.blox.sqprod.co>

mobile/lib/main.dart

@@ -6,7 +6,7 @@ import 'app.dart';
 import 'shared/diagnostics/diagnostics.dart';
 import 'shared/theme/theme_provider.dart';
 
-void main() async {
+Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
   // Pre-load preferences so startup can apply saved diagnostics consent and
@@ -17,7 +17,7 @@ void main() async {
     config: const SentryConfig.fromEnvironment(),
     crashReporter: const SentryCrashReporter(),
   );
-  await diagnosticsController.applyStartupConsent();
+  await applyStartupDiagnosticsConsent(diagnosticsController);
 
   runApp(
     ProviderScope(
@@ -31,3 +31,20 @@ void main() async {
     ),
   );
 }
+
+/// Applies diagnostics consent without allowing optional crash reporting to
+/// prevent the app from starting.
+@visibleForTesting
+Future<void> applyStartupDiagnosticsConsent(
+  DiagnosticsController diagnosticsController, {
+  DiagnosticsLog? log,
+}) async {
+  try {
+    await diagnosticsController.applyStartupConsent();
+  } on Object catch (error, stackTrace) {
+    (log ?? debugPrint)(
+      'Diagnostics startup failed; continuing without crash reporting: '
+      '$error\n$stackTrace',
+    );
+  }
+}

mobile/pubspec.yaml

@@ -32,6 +32,9 @@ dependencies:
   app_badge_plus: ^1.2.10
   app_links: ^6.4.0
   scrollable_positioned_list: ^0.3.8
+  # 9.24.0 still pins jni 0.14.2, so the resolver also selects the
+  # compatible path_provider_android 2.2.23 instead of the prior jni 1.0.0
+  # graph. Keep this exact pin until Sentry publishes a compatible release.
   sentry_flutter: 9.24.0
 
 dev_dependencies:

mobile/test/main_test.dart

@@ -0,0 +1,47 @@
+import 'package:buzz/main.dart' as app;
+import 'package:buzz/shared/diagnostics/diagnostics.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  test('startup continues when crash reporting initialization fails', () async {
+    SharedPreferences.setMockInitialValues({
+      diagnosticsConsentPreferenceKey: true,
+    });
+    final preferences = await SharedPreferences.getInstance();
+    final logs = <String>[];
+    final controller = DiagnosticsController(
+      preferences: preferences,
+      config: const SentryConfig(
+        dsn: 'https://public@example.invalid/1',
+        release: 'buzz@1.2.3',
+        dist: '42',
+        environment: 'production',
+      ),
+      crashReporter: _FailingCrashReporter(),
+    );
+
+    await expectLater(
+      app.applyStartupDiagnosticsConsent(controller, log: logs.add),
+      completes,
+    );
+
+    expect(
+      logs.single,
+      contains(
+        'Diagnostics startup failed; continuing without crash reporting: '
+        'Bad state: init failed',
+      ),
+    );
+  });
+}
+
+class _FailingCrashReporter implements CrashReporter {
+  @override
+  Future<void> initialize(SentryConfig config) async {
+    throw StateError('init failed');
+  }
+
+  @override
+  Future<void> close() async {}
+}