Provider model refresh

For media production, first follow AGENT_GUIDE.md and the selected pipeline. These adapters are discoverable through the normal BaseTool registry. Inspect their input schema and status before making a request. An API credential indicates configuration, not verified account entitlement. No paid live test is implied.

Routing

Use preferred_tool to require an exact adapter and hosting_provider to require an API host. preferred_provider remains a legacy ranking preference. Select an exact model for images/video or model_id for speech. An unavailable exact model must fail rather than silently substitute a different model.