Use time reversal symmetry in kpoint reduction #1317

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Commits on May 8, 2026

Commits on May 9, 2026

fix(symmetry): correct lowpass θ·S, clarify accumulate contract, time_reversal default

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test(bzmesh_symmetry): add FM GaAs collinear halving test and apply_symop θ=-1 density test

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chore: delete plan.md and progress.md (AI working files)

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refactor(symmetry): simplify to spin-diagonal conjugation only (drop AFM spin-swap)

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test(bzmesh_symmetry): fold apply_symop density check into coverage matrix (T5)

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fix(test): pass time_reversal=true explicitly in symmetry_issues CuO2 test

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refactor(SymOp): add transform_kpoint_coordinate and maybe_conjugate helpers

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docs: address PR review comments (TODOs and future spin extension notes)

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