Symmetry-merged evolution: Trotter merging + momentum-sector CTPP - #182

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AlexSchuckert wants to merge 13 commits into

split/2-ctpp-corefrom

split/3-symmetric-evolution

Commits on Sep 2, 2026

feat: symmetry-merged evolution — Trotter merging + momentum-sector CTPP

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david-pl
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e82570f
style: cargo fmt + ruff format

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david-pl
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ece442e
style: ruff RUF005 (unpack instead of concatenation)

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david-pl
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d769a94
types: TranslationGroup / merge / orbit-step stubs in _core.pyi

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david-pl
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4a58ab3
style: type alias for the orbit-step return (clippy type_complexity)

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david-pl
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070bc75
Fix pre-commit failure
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b0d1752
refactor(ppvm-lindblad): dissolve orbit_rep.rs into the spec/basis/step layout

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claude
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8d53327
refactor(pauli-sum): lift momentum_merge out of the PyO3 macro

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claude
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4fa2dbd
test: cover the untested Python symmetry surface

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claude
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4841ffc
fix(pauli-sum): make momentum_merge the summing projector on every orbit

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claude
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54f79be
refactor(python-native): share the Pauli-array codec; wrap the symmetry API

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7432704
fix(lindblad): honour num_threads on the orbit-rep step; API polish

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claude
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3a56041
fix(symmetry): orbit-rep evolution on stabilized orbits; validate group inputs

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claude
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d8313e0