Refactor RollingCodesService to remove configuration file handling and update initialization logic

lib/services/supabase_heartbeat.dart

@@ -21,10 +21,10 @@ void initHeartbeat() {
       DateTime now = DateTime.now().toUtc();
       
       try {
-        // Wait until rolling codes service is initialized and registered
+        // Wait until rolling codes service is initialized and has operational seed
         if (!RollingCodesService.isRegistered) {
           print("Server not registered yet, skipping heartbeat");
-          await Future.delayed(Duration(seconds: 30));
+          await Future.delayed(Duration(seconds: 10)); // Check more frequently during startup
           continue;
         }