merge: bring Horseshoe Las Vegas booking from gh/master

Resolve against the bookings/{stays,transport} layout, couple payer
names, and the days/ timeline: move hotel-vegas-horseshoe.md into
bookings/stays/, swap the Wyndham ledger row for Horseshoe US$1,067.70
(KTVT, shared 50/50; settlement now US$715.37), and point Sep 30–Oct 3
day files at the Horseshoe.

Claude-Session: https://claude.ai/code/session_01SQPbfX7jyTALGYxJw36hbT

expenses.md

@@ -20,10 +20,10 @@ Tricount's default currency is USD. Shared expenses are split 50/50 between **KT
 | Accommodation | Yosemite cabin | US$933.75 | LKMS | Shared 50/50 | [`cabin-yosemite-wawona.md`](bookings/stays/cabin-yosemite-wawona.md) |
 | Accommodation | SF Airbnb | US$755.01 | LKMS | Shared 50/50 | [`airbnb-sf-daly-city.md`](bookings/stays/airbnb-sf-daly-city.md) |
 | Accommodation | Los Angeles — DTLA Airbnb | US$860.00 | KTVT | Shared 50/50 | [`airbnb-la-dtla.md`](bookings/stays/airbnb-la-dtla.md) |
-| Accommodation | Las Vegas — Wyndham Desert Rose | US$630.00 | KTVT | Shared 50/50 | [`wyndham-desert-rose-las-vegas.md`](bookings/stays/wyndham-desert-rose-las-vegas.md) |
+| Accommodation | Las Vegas — Horseshoe (2 rooms) | US$1,067.70 | KTVT | Shared 50/50 | [`hotel-vegas-horseshoe.md`](bookings/stays/hotel-vegas-horseshoe.md) |
 | Flights | MS & LK — YVR ↔ SFO | CA$1,369.76 | LKMS | Couple-only: LKMS | [`flights-ms.md`](bookings/transport/flights-ms.md) |
 | Car rental | SIXT — SFO round trip | US$897.93 | LKMS | Shared 50/50 | [`car-rental.md`](bookings/transport/car-rental.md) |
 
 ## Settlement
 
-**KTVT owes LKMS US$934.22.**
+**KTVT owes LKMS US$715.37.**