When automatic no‑show cancellation is enabled, Mews currently cancels all no‑shows at 6:00 am on the day after arrival. This works well in most cases, but creates challenges for guests who have communicated a late arrival.

Request:
Add a simple “Late Arrival” flag on a reservation that can be set by front desk agents without checking the guest in.

If a reservation is flagged as Late Arrival:
- It should not be automatically cancelled as a no‑show
- The reservation remains active until the guest arrives or is manually handled by staff
- Normal no‑show rules continue to apply to all unflagged reservations

Why this matters:
- Late arrivals are common (delayed flights, late buses, long drives, etc.)
- Agents currently have no clean way to acknowledge a confirmed late arrival without performing a premature check‑in
- This leads to workarounds and risk of incorrect cancellations, despite clear guest communication
- A simple flag would reduce manual errors and improve guest experience while preserving automation