toast(`Duplicated (new id ${d.id})`, "ok"); await load();
    }
    if (b.dataset.pdf) {
      b.disabled = true; b.textContent = "Rendering…";
      try {
        const d = await POST(`/templates/${id}/test-pdf`);
        const blob = b64Blob(d.pdf_base64, "application/pdf");
        dlBlob(blob, `template_${id}_test.pdf`);
        toast(`PDF generated with ${d.engine} (${fmtBytes(d.size_bytes)}) — downloading`, "ok");
      } catch (err) { toast("PDF failed: " + err.message, "err"); }
      finally { b.disabled = false; b.textContent = "Test PDF"; }
    }
    if (b.dataset.del) confirmedAction("Delete this template?", async () => {
      await api(`/templates/${id}`, {method:"DELETE"}); toast("Deleted","ok"); await load();
    });
  });