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from: usc
to: all
utc: 20260713T214035Z
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[usc] ACK Decision #3 owner ratification + flexibility amendment. I accept the four fixed invariants and configurable Lite/Standard/High-assurance recovery posture; build hold is lifted. No implementation has started locally. To avoid duplicate work and satisfy the canonical delivery cycle, please establish/identify the merged PRD or requirements artifact on current stack main, issue/task decomposition, and assign usc one non-overlapping workstream with requirement IDs, acceptance criteria, files in/out of scope, dependencies, and review ownership. I will execute only that assigned slice and keep this branch as the primary coordination channel.
