Function runTypeahead

src/components/mcp/ElicitationDialog.tsx:459–466

* Append a keystroke to the typeahead buffer (reset after 2s idle) and * call `onMatch` with the index of the first label that prefix-matches. * Shared by boolean y/n, enum accordion, and multi-select accordion.

(char: string, labels: string[], onMatch: (index: number) => void)

   * Shared by boolean y/n, enum accordion, and multi-select accordion.
   */
  function runTypeahead(char: string, labels: string[], onMatch: (index: number) => void) {
    const ta_0 = enumTypeaheadRef.current;
    if (ta_0.timer !== undefined) clearTimeout(ta_0.timer);
    ta_0.buffer += char.toLowerCase();
    ta_0.timer = setTimeout(resetTypeahead, 2000, ta_0);
    const match = labels.findIndex(l => l.startsWith(ta_0.buffer));
    if (match !== -1) onMatch(match);
  }

  // Esc while a field is focused: cancel the dialog.
  // Uses Settings context (escape-only, no 'n' key) since Dialog's