first commit

static/js/api.js

@@ -0,0 +1,19 @@
+export async function api(path, options = {}) {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), 12000);
+  try {
+    const response = await fetch(path, {
+      ...options,
+      headers: { "content-type": "application/json", ...(options.headers || {}) },
+      signal: controller.signal,
+    });
+    const data = await response.json().catch(() => ({}));
+    if (!response.ok) throw new Error(data.error || `Błąd ${response.status}`);
+    return data;
+  } catch (error) {
+    if (error.name === "AbortError") throw new Error("Przekroczono czas odpowiedzi serwera");
+    throw error;
+  } finally {
+    clearTimeout(timeout);
+  }
+}