router/

Package adaptive is the adaptive model router: it picks a model for each call from the configured pool for the caller's tier (high, low, frontier) by sampling a score from each candidate's recorded reliability, speed, price and current load, and it learns from every registered outcome (latency, throughput, rate limits and other failures, each with its own cooldown).

Package state holds the process-wide adaptive router singleton and the route-event fan-out: every route decision is written to stderr as one `[router] <json>` NDJSON line and delivered to the process-local subscribers.