docs(codec): PR-X12 substrate merged-canon — session A + B synthesis #453

Job	Run time
format/stable	22s
clippy/1.95.0	44s
native-backend/stable	7m 47s
nostd/thumbv6m-none-eabi/stable	30s
hpc-stream-parallel/rayon	1m 27s
Pass MSRV values to other jobs	2s
tier4-avx512-check	27s
docs/nightly	-1s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	-1s
nightly-simd-polyfill	-1s
cargo-careful	-1s
miri	-1s
tests/1.95.0	10m 49s
tests/stable	11m 18s
blas-msrv	1m 13s
tests/beta	10m 36s
conclusion	0s
	45m 10s

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