refactor: roll out stream helpers to friendli opencode mimo specs (#1… #3744

Job	Run time
invisible-chars	8s
knip	44s
compile	1m 33s
check-translations	36s
platform-unit-test (ubuntu-latest)	3m 52s
platform-unit-test (windows-latest)	10m 5s
dependency-review	0s
	16m 58s

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