transport: save Uber airport receipt

TODO.md

@@ -33,6 +33,9 @@ Open items before and during the trip. Tick and date when done.
 - [ ] **Watch Visa 3924 for the US$228.43 Gilmore Cabin refund** after the
   Sep 16 date change. Then update the payment row in
   [`cabin-sequoia-miramonte.md`](bookings/stays/cabin-sequoia-miramonte.md).
+- [ ] **Confirm the accounting payer, currency, and expense scope for the
+  2026-09-19 Uber YVR transfer** before adding it to [`expenses.md`](expenses.md).
+  The receipt is saved in [`uber-yvr-airport-transfer-2026-09-19.md`](bookings/transport/uber-yvr-airport-transfer-2026-09-19.md), but the email does not identify these details.
 
 ## During the trip