- propose_hike, create_hike and update_tour take stage_end on the stops a day
ends at, checked by the tours' own stage rules (never at the start or the
end, at most 60 stages) on REST and MCP alike.
- A proposal over several days names its stage ends and sets no single day's
schedule; its card counts the stages and marks the stops they end at.
- New points for a hike in stages keep the keys of the stops they stand on,
so a stage keeps its day; they are refused only where they would drop every
stage end.
- The tours group and the prompt name the stages, how to put each on its day,
and what to offer once a tour is planned: places along it, its packing, the
GPX file.
Plan this checks place_edit like the tour routes, the include choices of a
run or group stay disabled while the chat applies a change, and a follow-up
can say when it applies, so Confirm the pending bookings shows only when the
card holds a pending booking of this trip.