Why: establish the authorized task workspace and its initial baseline.
Evidence: preserved precheck receipt in .task/fix-rdm-pin-advance-latest-2.md; R0=6ced938a126981ee2a4fab671a2da94f49cb56c5.
Impact: task metadata only; the feature workspace starts at 6ced938a12.
Refs: .task/fix-rdm-pin-advance-latest-2.md