Refactor RollingCodesService to remove configuration file handling and update initialization logic

lib/services/rolling_codes_service.dart

@@ -7,25 +7,23 @@ import 'package:waylume_server/core/utils.dart';
 import '../config/supabase_config.dart';
 
 class RollingCodesService {
-  // Shared constants (these should match edge function constants)
-  static const String registrationSeed = String.fromEnvironment('REGISTRATION_SEED', defaultValue: 'default_registration_seed_change_in_production');
-  static const String secretSalt = String.fromEnvironment('SECRET_SALT', defaultValue: 'default_secret_salt_change_in_production');
+  // Shared constants (hardcoded to match edge function constants)
+  static const String registrationSeed = 'waylume_rolling_registration_seed_2025';
+  static const String secretSalt = 'waylume_operational_secret_salt_2025';
   static const int timeWindowSeconds = 300; // 5 minutes
   
-  // Server configuration file path
-  static const String configFile = '/tmp/waylume_server_config.json';
-  
   static String? _operationalSeed;
   static String? _serverId;
   
-  /// Initialize service and load/generate configuration
+  /// Initialize service
   static Future<void> initialize() async {
     _serverId = fromEnivronment('SERVER_ID');
     if (_serverId == null) {
       throw Exception('SERVER_ID environment variable is required');
     }
     
-    await _loadConfiguration();
+    // No need to load configuration - server re-registers on every restart
+    print('Rolling codes service initialized for server $_serverId');
   }
   
   /// Generate registration rolling code
@@ -67,9 +65,9 @@ class RollingCodesService {
   }
   
   /// Set operational seed after successful registration
-  static Future<void> setOperationalSeed(String seed) async {
+  static void setOperationalSeed(String seed) {
     _operationalSeed = seed;
-    await _saveConfiguration();
+    print('Operational seed set for server $_serverId');
   }
   
   /// Get current operational seed
@@ -91,42 +89,4 @@ class RollingCodesService {
     
     return digest.toString();
   }
-  
-  /// Load configuration from persistent storage
-  static Future<void> _loadConfiguration() async {
-    try {
-      final file = File(configFile);
-      if (await file.exists()) {
-        final content = await file.readAsString();
-        final config = jsonDecode(content) as Map<String, dynamic>;
-        
-        if (config['server_id'] == _serverId) {
-          _operationalSeed = config['operational_seed'];
-          print('Loaded operational seed for server $_serverId');
-        } else {
-          print('Configuration file exists but server_id does not match. Need to re-register.');
-        }
-      }
-    } catch (e) {
-      print('Error loading configuration: $e');
-    }
-  }
-  
-  /// Save configuration to persistent storage
-  static Future<void> _saveConfiguration() async {
-    try {
-      final config = {
-        'server_id': _serverId,
-        'operational_seed': _operationalSeed,
-        'last_updated': DateTime.now().toIso8601String(),
-      };
-      
-      final file = File(configFile);
-      await file.writeAsString(jsonEncode(config));
-      print('Configuration saved for server $_serverId');
-    } catch (e) {
-      print('Error saving configuration: $e');
-      throw Exception('Failed to save server configuration');
-    }
-  }
 }

lib/services/server_service.dart

@@ -9,11 +9,7 @@ class ServerService {
   static Future<void> registerServer() async {
     await RollingCodesService.initialize();
     
-    // If already registered and has operational seed, skip registration
-    if (RollingCodesService.isRegistered) {
-      print('Server already registered with operational seed');
-      return;
-    }
+    // Server always registers on startup to get fresh operational seed
     
     GeolocationData geolocationData = await getGeolocationData();
     
@@ -50,8 +46,8 @@ class ServerService {
       if (response.statusCode == 200) {
         final responseData = jsonDecode(response.body);
         if (responseData['success']) {
-          // Store operational seed
-          await RollingCodesService.setOperationalSeed(responseData['operational_seed']);
+          // Store operational seed in memory (no persistence needed)
+          RollingCodesService.setOperationalSeed(responseData['operational_seed']);
           print('Server registered successfully with server-manager');
         } else {
           throw Exception('Registration failed: ${responseData['error']}');

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;
         }