frontend/src/api/client.js

const BASE = ''

async function request(path, options = {}) {
  const url = path.startsWith('/') ? `${BASE}${path}` : `${BASE}/${path}`
  const res = await fetch(url, {
    credentials: 'include',
    headers: { 'Content-Type': 'application/json', ...(options.headers || {}) },
    ...options,
  })
  const json = await res.json().catch(() => ({}))
  if (!res.ok) throw new Error(json.error || `HTTP ${res.status}`)
  return json
}

export const api = {
  get:  (path)         => request(path),
  post: (path, body)   => request(path, { method: 'POST',   body: JSON.stringify(body) }),
  put:  (path, body)   => request(path, { method: 'PUT',    body: JSON.stringify(body) }),
  del:  (path)         => request(path, { method: 'DELETE' }),
}