docs: add Spaces as Agent Tools page (#2407)
* docs: add Spaces as Agent Tools page for agents.md endpoint
Documents the new /spaces/<id>/agents.md endpoint (moon-landing #17771)
that lets coding agents call any compatible Gradio Space without a
client library or hardcoded integration. Covers the Agents popover UI,
the endpoint response, chaining Spaces, and ZeroGPU auth.
* docs: simplify opening line
* docs: use TRELLIS.2 as the example Space throughout
* Update docs/hub/spaces-agents.md
Co-authored-by: Mishig <dmishig@gmail.com>
* Update docs/hub/spaces-agents.md
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
---------
Co-authored-by: Mishig <dmishig@gmail.com>
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
