Extract model catalog into a single models.md; point chat + API docs at it

getting-started.md

@@ -39,7 +39,7 @@ with the account you created in step 1.
 
 - **Choose your model.** You can pick not just *which* model but *where* it runs:
   **private** (Tinfoil, runs in encrypted enclaves) or **green** (GreenPT, 100%
-  renewable energy). See [API access](api-access.md#models) for the full list.
+  renewable energy). See the [model list](models.md) for the full list.
 - **Web search** is enabled by default (self-hosted, no external dependency).
 - **File uploads** work out of the box — ask the chat about a document you attach.
 - Your usage draws from your monthly allowance; you can see it on the