Function killWindowsProcessTree

scripts/dev-process-utils.mjs:118–129

* Windows has no POSIX process groups: ChildProcess#kill reaches only the * direct child (e.g. the uvx wrapper), leaving grandchildren — the actual * python agent-server holding its port — running. `taskkill /t` walks the * child tree instead. Windows also has no graceful tree signal (taskkill *

(proc, signal)

 * a failure to spawn taskkill itself falls back to the direct kill.
 */
function killWindowsProcessTree(proc, signal) {
  const result = spawnSync(
    "taskkill",
    ["/pid", String(proc.pid), "/t", "/f"],
    // windowsHide avoids a console window flash when invoked from the
    // packaged (GUI) Electron process.
    { stdio: "ignore", windowsHide: true },
  );
  if (result.error) {
    proc.kill(signal);
  }
}

export function createShutdownHookRegistry(onError) {
  const hooks = new Set();