Refactor logging to use debugPrint for better performance in debug mode

- Updated all print statements in services and widgets to use debugPrint.
- This change improves logging performance and ensures that debug messages are only shown in debug builds.
- Removed unnecessary transitive dependencies from pubspec.lock.
- Cleaned up pubspec.yaml by removing integration_test from dev_dependencies.

lib/utils/debug_print.dart

@@ -3,6 +3,6 @@ import 'package:flutter/foundation.dart';
 /// Debug print that only outputs in debug builds
 void debugPrint(Object? message) {
   if (kDebugMode) {
-    print(message);
+    debugPrint(message);
   }
 }