docs: add star ecosystem section

Author: greynewell

README.md

@@ -2,6 +2,16 @@
 
 Source for the Supermodel API docs site: [docs.supermodeltools.com](https://docs.supermodeltools.com).
 
+---
+
+## ⭐ Star the Supermodel Ecosystem
+
+If this is useful, please star our tools — it helps us grow:
+
+[![mcp](https://img.shields.io/github/stars/supermodeltools/mcp?style=social)](https://github.com/supermodeltools/mcp)  [![mcpbr](https://img.shields.io/github/stars/supermodeltools/mcpbr?style=social)](https://github.com/supermodeltools/mcpbr)  [![typescript-sdk](https://img.shields.io/github/stars/supermodeltools/typescript-sdk?style=social)](https://github.com/supermodeltools/typescript-sdk)  [![arch-docs](https://img.shields.io/github/stars/supermodeltools/arch-docs?style=social)](https://github.com/supermodeltools/arch-docs)  [![dead-code-hunter](https://img.shields.io/github/stars/supermodeltools/dead-code-hunter?style=social)](https://github.com/supermodeltools/dead-code-hunter)  [![Uncompact](https://img.shields.io/github/stars/supermodeltools/Uncompact?style=social)](https://github.com/supermodeltools/Uncompact)  [![narsil-mcp](https://img.shields.io/github/stars/supermodeltools/narsil-mcp?style=social)](https://github.com/supermodeltools/narsil-mcp)
+
+---
+
 ## Get an API key
 
 Get your API key from the [Supermodel Dashboard](https://dashboard.supermodeltools.com/) and send it in the `X-Api-Key` header.