// inject into page
const s = document.createElement("script");
s.src = chrome.runtime.getURL("js/inject.js");
(document.head||document.documentElement).appendChild(s);

// listen for page→extension
window.addEventListener("message", e => {
  if (e.source === window && e.data?.type === "ZMS_CAPTURE") {
    chrome.runtime.sendMessage({ command: "CAPTURED", data: e.data.body });
  }
});