Two cross-platform fixes salvaged from #1502:
- to_graphml: nx.write_graphml raises ValueError on None attribute
values, so a node/edge carrying a null field crashed the export.
Coerce None -> "" for node and edge attributes before writing.
- save-result: add --answer-file as an alternative to --answer so long
or multiline answers can be passed via a file instead of a fragile
inline shell arg (notably Windows/PowerShell quoting). Exactly one of
--answer / --answer-file is required.
The rest of #1502 (a version downgrade and a hand-edited generated
skill-windows.md that fails skillgen --check, plus duplicated
windows-scripts) is left for rework on the PR.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
antonioscarinci
407a7f142d