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2026.9.8.1: a package's host modules are ordered by what they import, and the design document aligned with what shipped #1766

Job	Run time
examples: the curriculum builds	8m 8s
integration: mcpp builds & runs xlings	9m 36s
toolchain: musl + llvm	10m 10s
toolchain: gcc (cold self-host)	9m 14s
build + unit tests (linux x86_64, self-host)	14m 57s
	52m 5s