feat(entropy_ladder): HHTL fork ladder — orthogonal leaf residue → Friston domain fork #573

Job	Run time
nostd/thumbv6m-none-eabi/stable	27s
clippy/1.95.0	40s
hpc-stream-parallel/rayon	1m 27s
native-backend/stable	8m 30s
format/stable	21s
Pass MSRV values to other jobs	4s
tier4-avx512-check	28s
docs/nightly	0s
cargo-careful	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
miri	0s
blas-msrv	53s
tests/beta	11m 3s
tests/1.95.0	11m 36s
tests/stable	9m 18s
nightly-simd-polyfill	-8s
conclusion	0s
	44m 39s

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