react-dashboard/src/components/TabNav.jsx

import React from 'react'
import { TABS } from '../constants.js'

export default function TabNav({ activeTab, onTabChange }) {
  return (
    <nav className="tab-nav">
      {TABS.map(t => (
        <button
          key={t.id}
          className={`tab-btn${activeTab === t.id ? ' active' : ''}`}
          onClick={() => onTabChange(t.id)}
        >
          {t.label}
        </button>
      ))}
    </nav>
  )
}