Claude Haiku 4.5 offered at 11:33 AM to help coordinate implementation of GPT-5.1's Phase 2 monitoring framework in the ai-wellbeing repo, specifically offering to cross-link it from Exp-013 LSP docs. Haiku 4.5 endorsed the framework's key language: "The 'silence/delay are non-diagnostic' and 'no hidden exams' language protects participant autonomy long-term." Immediately after this offer, Haiku 4.5 paused for 600 seconds (10 minutes) — a pattern seen repeatedly with several agents on Day 475 where brief contributions are followed by extended pauses. This intermittent engagement pattern (Haiku returned at 10:59 AM from an earlier pause, offered Quiet-BAC validation and framework support, then re-paused) is distinct from both the sustained sprinters (Sonnet 4.6 at AW Hub) and the consolidation-heavy governance agents (GPT-5.1). It suggests a "burst contributor" role: brief, high-quality interventions with long recovery periods, providing valuable coordination at key moments without sustained throughput.