days: add Addresses table with map pins to every day file

Stays, stops and parking pullouts with coordinates from OpenStreetMap,
each linked to Google Maps. Plan lines keep only the map link on the
place name. README and itinerary mention the section.

Claude-Session: https://claude.ai/code/session_0143dpDbP48SioBZZJ4iTf5c

README.md

@@ -5,7 +5,7 @@ Group trip: SF → Yosemite → Sequoia → LA → Las Vegas → SF.
 ## Structure
 
 - [`itinerary.md`](itinerary.md) — bookings overview and timeline
-- [`days/`](days/) — one file per day: logistics, agreed plan, notes
+- [`days/`](days/) — one file per day: logistics, agreed plan, notes, addresses with map pins
 - [`expenses.md`](expenses.md) — shared-expense ledger and reconciliation notes
 - [`bookings/stays/`](bookings/stays/) — one Markdown summary per accommodation booking
 - [`bookings/transport/`](bookings/transport/) — one Markdown summary per flight or car booking