Sharing a tour fetched the GPX file first and only then called
navigator.share, so the tap that asked had often run out by then. The
retry path kept that file for one more tap only, and a tap while a sheet
was still open made the browser throw InvalidStateError, which read as a
failed share.
The share button now fetches the file ahead where sharing is offered
(not while the planner has unsaved changes), and every tap hands a fresh
File built from the kept bytes to the sheet before anything is awaited.
A file a tap had to fetch is kept for the next tap. A tap while a sheet
is open is let be, and InvalidStateError and a closed sheet stay quiet;
only a real failure still says the download is left.
The tour type is a dropdown; a bike tour picks its profile, routes for it,
says when a point lies off every way, and shows what it runs on: surfaces,
kinds of way and, for a mountain bike, the trail grades, each pointed at on
the map. A type's own map (OpenHikingMap for a hike, CyclOSM for a bike tour)
is offered while a tour of that type is open, with an admin switch each.
From the planned cards: a hike avoids steep climbs, steps or ferries, nothing
else; a saved tour can be shared where the platform takes GPX files; and the
tours rail adds a tour from one menu: plan new, import GPX, or take one over
from another trip.
Maurice