Test

sketch out improved performance by refactoring codec pipeline logic #6423

Job	Run time
doctests	46s
py=3.11-min_deps	6m 19s
py=3.13-upstream	10m 52s
os=ubuntu-latest, py=3.13, deps=optional	6m 7s
os=ubuntu-latest, py=3.11, deps=optional	5m 56s
os=ubuntu-latest, py=3.13, deps=minimal	4m 46s
os=ubuntu-latest, py=3.11, deps=minimal	4m 30s
os=windows-latest, py=3.13, deps=optional	9m 32s
os=ubuntu-latest, py=3.12, deps=optional	6m 18s
os=windows-latest, py=3.11, deps=optional	10m 41s
os=ubuntu-latest, py=3.12, deps=minimal	4m 57s
os=macos-latest, py=3.13, deps=optional	4m 54s
os=macos-latest, py=3.11, deps=optional	5m 18s
Test complete	3s
	1h 20m 59s

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