Function anchor_window_to_click 

fn anchor_window_to_click(
    app: &AppHandle,
    window: &WebviewWindow,
    click_x: i32,
    click_y: i32,
)

Pick the right monitor for (click_x, click_y) and place the tray-popover window’s top-left below the click. Logs and bails out without setting a position when monitors can’t be queried — the window will still show() at its last-known position so the user doesn’t lose access to the recorder.