Refactor server status retrieval to focus on active connections only, removing CPU and memory metrics

lib/services/supabase_heartbeat.dart

@@ -45,7 +45,7 @@ void initHeartbeat() {
         // Generate operational rolling code for heartbeat authentication
         String authCode = RollingCodesService.generateOperationalCode();
         
-        // Get server status (CPU, memory, active connections)
+        // Get basic server status (only active connections)
         Map<String, dynamic> serverStatus = await _getServerStatus();
         
         // Send heartbeat to server-manager endpoint
@@ -124,12 +124,7 @@ Future<void> _registerInHeartbeatIsolate() async {
 }
 
 Future<Map<String, dynamic>> _getServerStatus() async {
-  // Get basic server status information
-  // This is a simplified implementation - could be enhanced with actual metrics
-  
   int activeConnections = 0;
-  double cpuUsage = 0.0;
-  double memoryUsage = 0.0;
   
   try {
     // Get active WireGuard connections count
@@ -143,45 +138,7 @@ Future<Map<String, dynamic>> _getServerStatus() async {
     print("Error getting WireGuard status: $e");
   }
   
-  try {
-    // Get basic system info (simplified)
-    ProcessResult uptimeResult = await Process.run('uptime', []);
-    if (uptimeResult.exitCode == 0) {
-      String output = uptimeResult.stdout as String;
-      // Parse load average as a rough CPU usage indicator
-      RegExp loadRegex = RegExp(r'load average: (\d+\.?\d*),');
-      Match? match = loadRegex.firstMatch(output);
-      if (match != null) {
-        cpuUsage = double.tryParse(match.group(1) ?? '0') ?? 0.0;
-        cpuUsage = (cpuUsage * 100).clamp(0, 100); // Convert to percentage
-      }
-    }
-  } catch (e) {
-    print("Error getting CPU usage: $e");
-  }
-  
-  try {
-    // Get memory usage (simplified)
-    ProcessResult freeResult = await Process.run('free', ['-m']);
-    if (freeResult.exitCode == 0) {
-      String output = freeResult.stdout as String;
-      List<String> lines = output.split('\n');
-      if (lines.length > 1) {
-        List<String> memLine = lines[1].split(RegExp(r'\s+'));
-        if (memLine.length > 2) {
-          int total = int.tryParse(memLine[1]) ?? 1;
-          int used = int.tryParse(memLine[2]) ?? 0;
-          memoryUsage = (used / total * 100).clamp(0, 100);
-        }
-      }
-    }
-  } catch (e) {
-    print("Error getting memory usage: $e");
-  }
-  
   return {
     'active_connections': activeConnections,
-    'cpu_usage': cpuUsage,
-    'memory_usage': memoryUsage,
   };
 }