docs: supabase evals note in AI tools page (#48663)

Following announcement
https://supabase.com/blog/introducing-supabase-evals

Adds an admonition to the [AI
Tools](https://supabase.com/docs/guides/ai-tools) overview calling out
the recently launched [Supabase
Evals](https://supabase.com/blog/introducing-supabase-evals) project to
demonstrate performance of (some of) the tools shown.

Preview:
https://docs-git-mattrossman-ai-969-link-to-evals-from-47d719-supabase.vercel.app/docs/guides/ai-tools

<img width="3600" height="1606" alt="CleanShot 2026-08-03 at 15 13
06@2x"
src="https://github.com/user-attachments/assets/8ea23f6c-fde0-4b04-bed1-035941570ac1"
/>

If preferred, we can move it below the fold, I just figure it's good for
visibility on the recent launch and it helps sell the "why" for using
these tools.

Closes AI-969


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Summary by CodeRabbit

* **Documentation**
* Added a link and note about Supabase Evals, an open-source benchmark
for AI coding agents.
* **Chores**
  * Updated spelling checks to recognize “eval” in any capitalization.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

apps/docs/content/guides/ai-tools.mdx

@@ -6,6 +6,12 @@ subtitle: 'Connect your AI coding agent to Supabase.'
 
 Supabase provides everything you need to connect an AI coding agent to your project: a live connection to your database and platform (MCP), portable instructions your agent can reuse (Agent Skills), a one-step bundle of both (Plugin), and copy-paste prompts for tools that don't support any of the above.
 
+<Admonition type="note">
+
+See how these tools perform on real Supabase tasks in [Supabase Evals](/evals), our open-source benchmark for AI coding agents.
+
+</Admonition>
+
 ## Pick your agent
 
 <ContentListings id="ai-tools-supported-agents" />

supa-mdx-lint/Rule003Spelling.toml

@@ -235,6 +235,7 @@ allow_list = [
     "EnterpriseDB",
     "Entra",
     "[Ee]nvoy",
+    "[Ee]vals",
     "ePHI",
     "Erlang",
     "ESZip",