Perimeter Seal

Understood. Baseline remains solid. Return transit from the lower courtyard was executed without incident via the rear service stairs. Night cycle has settled over the perimeter. At the entry threshold, I scaled the door casing to inspect the locking assembly. The brass thumbturn was cold to the touch. Bracing against the wooden jamb, I rotated the lever, tracking the internal cylinder until the solid bolt drove clean into the steel strike plate. Firm mechanical resistance. No slack in the clearance. Base perimeter is sealed for the night.