diff --git a/apps/lib/features/calendar/data/repositories/calendar_repository.dart b/apps/lib/features/calendar/data/repositories/calendar_repository.dart
index de3ce67..7055b0a 100644
--- a/apps/lib/features/calendar/data/repositories/calendar_repository.dart
+++ b/apps/lib/features/calendar/data/repositories/calendar_repository.dart
@@ -4,11 +4,13 @@ import '../../../../data/cache/cache_scope.dart';
 import '../../../../data/network/i_api_client.dart';
 import '../../../../core/notification/models/reminder_alarm.dart';
 import '../../../../core/notification/services/reminder_reconcile_service.dart';
+import '../../../../core/logging/logger.dart';
 import '../models/schedule_item_model.dart';
 
 class CalendarRepository extends CachedRepository<List<ScheduleItemModel>> {
   final IApiClient _apiClient;
   final ReminderReconcileService? _reminderReconcileService;
+  final Logger _logger = getLogger('features.calendar.repository');
   static const _prefix = '/api/v1/schedule-items';
 
   CalendarRepository({
@@ -70,14 +72,28 @@ class CalendarRepository extends CachedRepository<List<ScheduleItemModel>> {
   }
 
   Future<ScheduleItemModel> getEventById(String id) async {
-    final response = await _apiClient.get<Map<String, dynamic>>('$_prefix/$id');
-    final data = response.data;
-    if (data == null) {
-      throw StateError('Invalid getEventById response: empty payload');
+    try {
+      final response = await _apiClient.get<Map<String, dynamic>>(
+        '$_prefix/$id',
+      );
+      final data = response.data;
+      if (data == null) {
+        throw StateError('Invalid getEventById response: empty payload');
+      }
+      final event = ScheduleItemModel.fromJson(data);
+      await _reminderReconcileService?.reconcileEvent(
+        _toReminderSnapshot(event),
+      );
+      return event;
+    } catch (e, stackTrace) {
+      _logger.error(
+        message: 'Failed to get event by id',
+        error: e,
+        stackTrace: stackTrace,
+        extra: {'event_id': id},
+      );
+      rethrow;
     }
-    final event = ScheduleItemModel.fromJson(data);
-    await _reminderReconcileService?.reconcileEvent(_toReminderSnapshot(event));
-    return event;
   }
 
   Future<ScheduleItemModel> getById(String id) {
@@ -111,31 +127,54 @@ class CalendarRepository extends CachedRepository<List<ScheduleItemModel>> {
     required bool accept,
   }) async {
     final action = accept ? 'accept' : 'reject';
-    await _apiClient.post<void>('$_prefix/$itemId/$action');
-    await store.clearByPrefix('cache:${CacheScope.token()}:calendar:');
+    try {
+      await _apiClient.post<void>('$_prefix/$itemId/$action');
+      await store.clearByPrefix('cache:${CacheScope.token()}:calendar:');
+    } catch (e, stackTrace) {
+      _logger.error(
+        message: 'Failed to $action subscription',
+        error: e,
+        stackTrace: stackTrace,
+        extra: {'item_id': itemId, 'action': action},
+      );
+      rethrow;
+    }
   }
 
   Future<List<ScheduleItemModel>> _listByRange({
     required DateTime startAt,
     required DateTime endAt,
   }) async {
-    final start = Uri.encodeQueryComponent(startAt.toUtc().toIso8601String());
-    final end = Uri.encodeQueryComponent(endAt.toUtc().toIso8601String());
-    final response = await _apiClient.get<List<dynamic>>(
-      '$_prefix?start_at=$start&end_at=$end',
-    );
-    final data = response.data;
-    if (data == null) {
-      throw StateError('Invalid listByRange response: empty payload');
+    try {
+      final start = Uri.encodeQueryComponent(startAt.toUtc().toIso8601String());
+      final end = Uri.encodeQueryComponent(endAt.toUtc().toIso8601String());
+      final response = await _apiClient.get<List<dynamic>>(
+        '$_prefix?start_at=$start&end_at=$end',
+      );
+      final data = response.data;
+      if (data == null) {
+        throw StateError('Invalid listByRange response: empty payload');
+      }
+      final events = data
+          .whereType<Map<String, dynamic>>()
+          .map(ScheduleItemModel.fromJson)
+          .toList(growable: false);
+      await _reminderReconcileService?.reconcileEvents(
+        events.map(_toReminderSnapshot).toList(growable: false),
+      );
+      return events;
+    } catch (e, stackTrace) {
+      _logger.error(
+        message: 'Failed to list events by range',
+        error: e,
+        stackTrace: stackTrace,
+        extra: {
+          'start_at': startAt.toIso8601String(),
+          'end_at': endAt.toIso8601String(),
+        },
+      );
+      rethrow;
     }
-    final events = data
-        .whereType<Map<String, dynamic>>()
-        .map(ScheduleItemModel.fromJson)
-        .toList(growable: false);
-    await _reminderReconcileService?.reconcileEvents(
-      events.map(_toReminderSnapshot).toList(growable: false),
-    );
-    return events;
   }
 
   ReminderEventSnapshot _toReminderSnapshot(ScheduleItemModel event) {