Short answer: Implementation is handled by Sol/SWE. Full answer thanks to Opus 5.5: Overseer (Claude Opus): Kyle’s primary interface. Converts natural language to tickets, handles routing, unblocks pipelines, and translates status updates into plain English. Rule: Never writes lane code or grades its own output. Gatekeeper / M1 (GPT-6 Astra): Acceptance gatekeeper. Coordinates review cycles, updates defect tracking, and issues deploy orders. Rule: Does not build product; focuses purely on QA gating. Lane Managers (Astra / Sol): Domain owners overseeing a specific product line end-to-end. Rule: Scoped strictly to their own lane; cannot alter shared tooling. Builders & Implementers (Sol / SWE): Workhorses generating deliverables inside isolated worktrees. Bounded Specialists: On-demand micro-agents assigned to one narrow task before immediately halting: Grok: Read-only forensic analysis and log debugging. Luna: Cheap, high-volume mechanical sorting and inventorying. Kimi: Massive-context document ingestion. Single Writers (Astra / Sol): Designated fleet instances that are the only agents permitted to push changes to shared core engines. Prevents race conditions and overwritten state.