docs(trip): confirm LA Airbnb extra night, Sep 26-30

Host accepted the alteration on Sep 15 (reservation HMNBY9NYRN): 4 nights
Sep 26-30 instead of 3 nights Sep 27-30, total EUR 1,077.00 (+EUR 311.31,
paid in full). This resolves the "additional night TBC" note on Sep 26.
Cancellation is now partial-refund until Sep 19 4:00 PM PDT.

Sep 27 no longer involves a check-in, so the luggage-storage caveat and
the 4:00 PM check-in constraint on the Pantages option are gone.

Ledger: LA row US$860.00 -> US$1,209.63 (same FX rate as the original
row); settlement recomputed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

itinerary.md

@@ -24,7 +24,7 @@
 | [🏠 Airbnb — Daly City](bookings/stays/airbnb-sf-daly-city.md) | Sep 19–22 (3 nights) | $1,049.54 CAD | Auto-pays Sep 7 |
 | [🏕️ Cabin — Yosemite (Wawona)](bookings/stays/cabin-yosemite-wawona.md) | Sep 22–24 (2 nights) | US$933.75 | ✅ Paid |
 | [🌲 Cabin — Sequoia (Miramonte)](bookings/stays/cabin-sequoia-miramonte.md) | Sep 24–27 (3 nights) | US$771.16 | Auto-pays Sep 8 |
-| [🏙️ Airbnb — LA (DTLA)](bookings/stays/airbnb-la-dtla.md) | Sep 27–30 (3 nights) | US$860 | ✅ Booked by KT · ⚠️ complete online check-in form |
+| [🏙️ Airbnb — LA (DTLA)](bookings/stays/airbnb-la-dtla.md) | Sep 26–30 (4 nights) | €1,077.00 | ✅ Booked & paid by KT · altered Sep 15 (+1 night, check-in moved to Sep 26) · ⚠️ complete online check-in form |
 | [🎰 Hotel — Las Vegas (Horseshoe)](bookings/stays/hotel-vegas-horseshoe.md) | Sep 30–Oct 3 (3 nights) | US$1,067.70 | ✅ Booked by KT · 2 rooms · pay at property · free cancel until Sep 28 · replaces [Wyndham](bookings/stays/wyndham-desert-rose-las-vegas.md) (cancelled Sep 9) |
 | [🚗 SIXT Car Rental](bookings/transport/car-rental.md) | Sep 20–Oct 5 (15 days booked) | US$897.93 | ✅ Booked (9739014160) · pickup Sep 20, 13:00 PDT · return early Oct 4, 16:30 PDT |
 | [✈️ Flights — KT & VT](bookings/transport/flights-kt-vt.md) | Sep 19 / Oct 3 | — | ✅ Dates confirmed (details later) |
@@ -62,4 +62,4 @@ One file per day in [`days/`](days/): logistics, agreed plan, open notes, addres
 
 ---
 
-*Last updated: 2026-09-13*
+*Last updated: 2026-09-16*