setenv.bat (and activate_venv/get_cmd/install_py.bat) had a UTF-8 BOM,
which cmd.exe read as part of the @echo off line, breaking every bin
script that calls setenv.bat via `call`. Stripped the BOM.
material_flow.bat/.sh and tro_flow.bat/.sh now check up front whether
the Graphviz engine --tosvg needs (dot, or neato with --use-cords) is
resolvable, and print an early WARNUNG with fix instructions if not -
before the CSV is even parsed. The Python scripts still run and report
the same failure in detail if the SVG step is actually reached.
The doc folder is now addressed via an environment variable like every other
project folder, so tools can resolve doc paths without hardcoding them.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
m.stangl
s.ayadi