Init first files

frontend/src/api.js

@@ -0,0 +1,28 @@
+const API_URL = import.meta.env.VITE_API_URL || "http://localhost:8000/api/v1";
+
+export async function apiFetch(path, options = {}, tokens, onUnauthorized) {
+  const headers = {
+    "Content-Type": "application/json",
+    ...(options.headers || {}),
+  };
+  if (tokens?.accessToken) {
+    headers.Authorization = `Bearer ${tokens.accessToken}`;
+  }
+
+  let res = await fetch(`${API_URL}${path}`, { ...options, headers });
+  if (res.status === 401 && tokens?.refreshToken && onUnauthorized) {
+    const refreshed = await onUnauthorized();
+    if (refreshed) {
+      headers.Authorization = `Bearer ${refreshed.accessToken}`;
+      res = await fetch(`${API_URL}${path}`, { ...options, headers });
+    }
+  }
+  if (!res.ok) {
+    const txt = await res.text();
+    throw new Error(txt || `HTTP ${res.status}`);
+  }
+  if (res.status === 204) return null;
+  return res.json();
+}
+
+export { API_URL };