Iterative ChatGPT restoration: repair, de-smooth, then verify

Restore this scan across three passes, and run them one at a time. Pass 1: Repair scratches, creases, dust, and fading. Recover detail that is genuinely present and keep every face unchanged. Pass 2: The last result looks over-smoothed — reduce the smoothing and add back a subtle, natural film grain that matches the era. Pass 3: Compare this result against my original scan and undo any change to the faces or features; the people must still clearly look like themselves. Tell me anything you could not recover.