diff --git a/lib/services/sync/sync_outbox.dart b/lib/services/sync/sync_outbox.dart
index 37e669f..05cfc55 100644
--- a/lib/services/sync/sync_outbox.dart
+++ b/lib/services/sync/sync_outbox.dart
@@ -12,9 +12,6 @@ class SyncOutbox {
   Future<void> _saveChain = Future<void>.value();
   bool _isLoaded = false;
 
-  /// The namespace is account-scoped. Pending work recorded before login is
-  /// migrated from the local namespace into the newly authenticated account
-  /// so offline rides do not become stranded when the user signs in later.
   SyncOutbox(this._prefs, {String? storageNamespace})
       : _storageNamespace = _normalizeNamespace(storageNamespace) {
     load();
@@ -62,7 +59,6 @@ class SyncOutbox {
     final localKey = '${_outboxStorageKeyPrefix}_local';
     final rawJson = _prefs.getString(localKey);
     if (rawJson == null || rawJson.trim().isEmpty) return;
-
     var migrated = 0;
     try {
       final decoded = jsonDecode(rawJson);
@@ -71,8 +67,6 @@ class SyncOutbox {
           try {
             final map = entry is Map<String, dynamic> ? entry : Map<String, dynamic>.from(entry as Map);
             final item = SyncItem.fromJson(map);
-            // Local namespace work cannot legitimately be cloud-synced yet;
-            // keep only pending work and rebind it to the current provider.
             if (item.status.isPending) {
               _items[item.key] = item.status == SyncStatus.uploading
                   ? item.copyWith(status: SyncStatus.queued, clearNextRetry: true)
@@ -88,7 +82,6 @@ class SyncOutbox {
       debugPrint('[SyncOutbox] Local outbox migration skipped: $e');
       return;
     }
-
     if (migrated > 0) {
       _prefs.setString(storageKey, jsonEncode(_items.values.map((e) => e.toJson()).toList()));
       _prefs.remove(localKey);
@@ -104,9 +97,7 @@ class SyncOutbox {
           _items.remove(terminal.removeAt(0).key);
         }
       }
-      if (_items.length > maxOutboxCapacity) {
-        throw StateError('Sync outbox capacity reached with no evictable terminal items.');
-      }
+      if (_items.length > maxOutboxCapacity) throw StateError('Sync outbox capacity reached with no evictable terminal items.');
       return _prefs.setString(storageKey, jsonEncode(_items.values.map((e) => e.toJson()).toList()));
     });
     _saveChain = operation.then((_) {}, onError: (_) {});
@@ -118,10 +109,10 @@ class SyncOutbox {
   List<SyncItem> getPendingItems() => _items.values.where((i) => i.status.isPending).toList(growable: false);
   List<SyncItem> getEligibleItems(DateTime now) => _items.values.where((i) => i.isEligibleForAttempt(now)).toList(growable: false);
 
-  Future<SyncItem> enqueue(int localRideId, String providerId, {DateTime? now}) async {
-    if (localRideId <= 0 || providerId.trim().isEmpty) {
-      throw ArgumentError('A positive localRideId and non-empty providerId are required.');
-    }
+  /// [autoProcess] is retained for source compatibility with older callers;
+  /// queue processing is owned by SyncManager.
+  Future<SyncItem> enqueue(int localRideId, String providerId, {DateTime? now, bool autoProcess = true}) async {
+    if (localRideId <= 0 || providerId.trim().isEmpty) throw ArgumentError('A positive localRideId and non-empty providerId are required.');
     final normalizedProvider = providerId.trim();
     final key = '$normalizedProvider:$localRideId';
     final existing = _items[key];
@@ -132,9 +123,7 @@ class SyncOutbox {
       await _save();
       return rearmed;
     }
-    if (_items.length >= maxOutboxCapacity && !_items.values.any((i) => i.status.isTerminal)) {
-      throw StateError('Sync outbox capacity reached; pending rides were not discarded.');
-    }
+    if (_items.length >= maxOutboxCapacity && !_items.values.any((i) => i.status.isTerminal)) throw StateError('Sync outbox capacity reached; pending rides were not discarded.');
     final item = SyncItem(localRideId: localRideId, providerId: normalizedProvider, status: SyncStatus.queued, createdAt: now ?? DateTime.now());
     _items[key] = item;
     await _save();