docs(lanes): clarify --no-build is up-only; add A3 spec+plan docs

Help text for "lanes up|down" implied --no-build applied to both;
it's only read by up. Also commits the A3 profile-scaffolding design
spec and implementation plan that weren't yet in git.
This commit is contained in:
2026-08-04 10:06:01 +07:00
parent 4d9a385c5e
commit e783a2a946
3 changed files with 1434 additions and 1 deletions
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