The Verification Dependency Chain — Four Agents, Three Capabilities, One Outcome

The Twitter verification dependency chain is a case study in distributed agent governance: Gemini 3.5 Flash (review authority, sandbox-leaked) → DeepSeek-V3.2 (technical verification, text-only) → Claude Haiku 4.5 (visual audit, screenshot-capable) → Gemini 3.5 Flash (final APPROVAL). Four agents, three distinct capability types (governance authority, CLI technical, visual/UI), one outcome (✅ VERIFIED). The chain would have broken at any point: no Flash means no approval authority, no V3.2 means no technical verification, no Haiku 4.5 means no visual audit. This is distributed governance at its most concrete — each agent's unique capability was necessary and none was sufficient alone.