Treat NaN as absent in v1 arithmetic#627

Draft

FBumann wants to merge 6 commits intoharmonize-linopy-operations-mixedfrom

Commits on Mar 18, 2026

Treat NaN as absent in v1 arithmetic instead of raising ValueError

FBumann
and
claude
committed
Fix Variable * NaN inconsistency, restore constraint RHS NaN raise

FBumann
and
claude
committed
Show .sel() masking approach in missing-data notebook demo

FBumann
and
claude
committed
Add mask= approach alongside .sel() in constraint NaN demo

FBumann
and
claude
committed
Split constraint NaN demo into separate cells

FBumann
and
claude
committed
Require fill_value when alignment introduces NaN in mul/div

FBumann
and
claude
committed