bookings: add Yosemite cabin door code and welcome packet

Save the host's password-protected welcome page (door code, wifi,
local staff numbers, directions, house rules) and the Booking.com
message thread. Put the door code and wifi in the Sep 22-23 address
tables so they are on hand without signal.

days/2026-09-23.md

@@ -23,7 +23,7 @@
 
 | Place | Address | Map |
 |---|---|---|
-| Cabin — Wawona | 2627 Spelt Road, Wawona, CA 95389 · PIN 5937 · host +1 209-347-6333 | [37.54718, -119.64746](https://www.google.com/maps/search/?api=1&query=37.54718,-119.64746) |
+| Cabin — Wawona | 2627 Spelt Road, Wawona, CA 95389 · green house on the left · **door code 0517** · wifi `Yosemitecabin` / `!Yosemite!` · host +1 209-347-6333 · staff +1 559-598-0890 | [37.54718, -119.64746](https://www.google.com/maps/search/?api=1&query=37.54718,-119.64746) |
 | Mariposa Grove Welcome Plaza | Mariposa Grove Road, off Hwy 41 at the south entrance | [37.50662, -119.63029](https://www.google.com/maps/search/?api=1&query=37.50662,-119.63029) |
 | Sentinel Bridge lot (Cook's Meadow) | Southside Drive, Yosemite Valley | [37.74420, -119.58973](https://www.google.com/maps/search/?api=1&query=37.74420,-119.58973) |
 | Chinquapin junction | Hwy 41 × Glacier Point Road, ~12 mi north of Wawona; turn east for Glacier Point | [37.65933, -119.70714](https://www.google.com/maps/search/?api=1&query=37.65933,-119.70714) |