perf(metric): pre-apply cancel() before Simp.apply to fix SymPy 1.13 slowdown (#576)#591

Draft

utiberious wants to merge 2 commits intopygae:masterfrom

utiberious:fix/issue-576-metric-cancel-prepass

Commits on Apr 3, 2026

perf(metric): pre-apply cancel() before Simp.apply in normalize_metric and Christoffel_symbols
utiberious
committed
fix(metric): remove cancel() from Christoffel_symbols to prevent form change
utiberious
committed