Enable better observability, routing, and control across model usage

Agno’s LiteLLM model support now includes first-class metadata and additional fields. Teams can attach and propagate structured context alongside model calls, making it easier to track usage, apply policy, and integrate with downstream observability or governance workflows.

This change improves operational clarity without adding complexity. Metadata travels with requests in a consistent way, helping teams reason about cost allocation, environment context, or workload classification across agents and services.