Function withModifiers

src/utils/computerUse/executor.ts:150–165

* Bracket `fn()` with modifier press/release. `pressed` tracks which presses * actually landed, so a mid-press throw only releases what was pressed — no * stuck modifiers. The finally covers both press-phase and fn() throws. * * Caller must already be inside drainRunLoop() — key() dispatches to

(
  input: Input,
  mods: string[],
  fn: () => Promise<T>,
)

 * main queue and needs the pump to resolve.
 */
async function withModifiers<T>(
  input: Input,
  mods: string[],
  fn: () => Promise<T>,
): Promise<T> {
  const pressed: string[] = []
  try {
    for (const m of mods) {
      await input.key(m, 'press')
      pressed.push(m)
    }
    return await fn()
  } finally {
    await releasePressed(input, pressed)
  }
}

/**
 * Port of Cowork's `typeViaClipboard`. Sequence: