Genmedia model routing

Use these endpoint defaults when a domain skill needs a model. These choices come from project-specific guidance. Still run vg media schema <endpoint_id> --json before execution and vg media pricing <endpoint_id> --json when cost matters.

Endpoint-first rule:

1. Pick the endpoint ID from this skill.
2. Verify it with vg media models --endpoint_id <endpoint_id> --json.
3. Inspect it with vg media schema <endpoint_id> --json.
4. Check vg media pricing <endpoint_id> --json when cost matters.
5. Use text search only if the routed endpoint is missing, deprecated, rejected, or the task needs a model role not covered here.

Do not invent endpoint IDs.

Image generation