Why: The direction closes at U7 - the master record needs its
companion usage guide (enable/generate/revise/act/disable for owners)
and the combined evaluation record covering every landed increment
with its evidence chain and known boundaries.
Evidence: Live E2E on dev@b634a27 (real MiniMax-M3): progress page
presented autonomously, conversation surfaces=2, project aggregation
returns cross-conversation pages under the owner scope; receipts in
Dev task feature/generative-ui-u7-acceptance.
Impact: Documents-only (new guide + index closeout).
Refs: r2 master record; U5 scope r2; Dev task
feature/generative-ui-u7-acceptance
weichen
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