The new export fills Hoehe_Von_mm / Hoehe_Bis_mm, so the direction of a transport
element no longer has to be guessed from its neighbours. drive_uphill() now
decides in this order:
1. Hoehe_Von_mm -> Hoehe_Bis_mm: the rise of the element itself. Only the sign
is read, since the values are absolute on a Gefaellestrecke (1941 -> 1466)
but relative on a Strecke (0 -> 474).
2. Antriebfahrtrichtung "Auf" (up) or "Ab" (down).
3. A Gefaellestrecke without either runs downhill by definition.
Previously a Gefaellestrecke was assumed downhill outright and everything else
depended on Antriebfahrtrichtung alone; now both are backed by the height data
and the fallback order is explicit.
The node label states what was read and what follows from it, e.g.
"0 -> 474 mm (+474) = aufwaerts", so the arrow can be checked against the export
without opening the CSV.
Adds a plausibility check for the case where Antriebfahrtrichtung and the height
change disagree. The height wins and the conflict is reported, rather than one of
the two silently deciding.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
s.ayadi
5dcaa8b8fa