Fix jwt-token

server/models/Heartbeat.js

@@ -16,22 +16,51 @@ module.exports = (sequelize) => {
       },
       comment: 'ID of the device sending heartbeat'
     },
+    tenant_id: {
+      type: DataTypes.UUID,
+      allowNull: true,
+      references: {
+        model: 'tenants',
+        key: 'id'
+      },
+      comment: 'Tenant ID for multi-tenancy support'
+    },
     device_key: {
       type: DataTypes.STRING,
       allowNull: true, // Allow null for testing
       defaultValue: 'test-device-key',
       comment: 'Unique key of the sensor from heartbeat message'
     },
+    status: {
+      type: DataTypes.STRING,
+      allowNull: true,
+      comment: 'Device status (online, offline, error, etc.)'
+    },
+    timestamp: {
+      type: DataTypes.DATE,
+      allowNull: true,
+      comment: 'Timestamp from device'
+    },
     uptime: {
       type: DataTypes.BIGINT,
       allowNull: true,
       comment: 'Device uptime in seconds'
     },
     memory_usage: {
-      type: DataTypes.INTEGER,
+      type: DataTypes.FLOAT,
       allowNull: true,
       comment: 'Memory usage percentage'
     },
+    cpu_usage: {
+      type: DataTypes.FLOAT,
+      allowNull: true,
+      comment: 'CPU usage percentage'
+    },
+    disk_usage: {
+      type: DataTypes.FLOAT,
+      allowNull: true,
+      comment: 'Disk usage percentage'
+    },
     firmware_version: {
       type: DataTypes.STRING,
       allowNull: true,