Fill the gap between EVA-3 (Jan 15 handover) and EVA-6 (Feb 6). EVA-4: Physical removal of Binglun #1 ISRU equipment after software shutdown in EVA-2. Binglun #1 converted to standard cargo configuration. EVA-5: Fuel transfer line verification between Binglun #1/#2 plus full base system inspection following GHC-05 crew departure. Co-Authored-By: Claude <noreply@anthropic.com>