Why: Delegated RDM renames currently lose the real operator before the Backend project write, leaving an account-disable race in the Backend database.
Evidence: Read-only source review identified both HTTP lifecycle and command rename paths; the proposed contract and validation plan are pending human stage 4-5 review.
Impact: Adds a narrow request-bound projection capability proposal and two-account final transaction plan. No product code, production state, or approval status changes.
Refs: Approved U3 r1 and A1-A4 amendment; Dev feature/iam-u3-account-directory-recovery task card.
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