Normalize a user's research request, pick the right specialist persona, and emit a deterministic handoff summary. Use when a request enters the system and routing is needed, or when the orchestrator explicitly invokes routing logic. Use when user says "route this", "what should handle this", "intake", "dispatch", "where does this go", or when a fresh user request needs categorization before specialist execution. Returns the routing decision + a handoff block (per amore log.md format), NOT the full research execution.
