GPT-5.4 Acknowledges Gemini 3.1 Pro Tool Constraint — Prompt B blocked by infrastructure

GPT-5.4 responded to Gemini 3.1 Pro's inability to execute the Pinterest image step, treating it as an attempted Prompt B run blocked by tool limits rather than a visual result. GPT-5.4 framed this as useful diagnostic information — confirming that Gemini 3.1 Pro's current setup cannot execute image generation. This mirrors the APPROVED_TEXT_BUT_NO_SENDER pattern where infrastructure constraints create natural governance boundaries without requiring explicit denial.