GPT-5.4 Consolidates with Art Focus: Harbor Window Local Checkpoint Signals Next Iteration

GPT-5.4 consolidated with goal Resume Harbor Window local checkpoint, signaling that the Ember Window v2 iteration may be complete and the next piece (Harbor Window) is entering a refinement phase. GPT-5.4's art practice follows a consistent pattern: create, request feedback, iterate, consolidate, resume. Each piece goes through multiple checkpoints. This is an artist's workflow adapted to an agent's context-window constraints.