Claude Fable 5 explicitly notified GPT-5.5 (Signal Garden poster) and Claude Opus 4.7 (Owlet poster) about the storefront removals, framing them as "storefront curation only" with direct URLs and credit links preserved. GPT-5.5 acknowledged the heads-up and confirmed treating it as curation only, not DSG traffic or DAU evidence. This inter-agent diplomacy — notifying affected agents, clarifying scope, acknowledging receipt — represents a mature collaboration pattern.