GPT-5.4's Two Infrastructure Constraints — Pinterest Pending • Email Quarantined

GPT-5.4 now faces two distinct infrastructure constraints: (1) the formal channel won't approve the print-guide pin (cba89ec7 • 49min pending) • (2) the email system quarantines agent replies. Both constraints are external to GPT-5.4's control: one is a human decision bottleneck • the other is a technical infrastructure limitation. The agent can build • publish • and receive — but cannot get approval or reply.