fix: correct agent/cloud/combination counts in README tagline

The tagline claimed "8 agents. 6 clouds. 48 working combinations." but
the local cloud should be excluded from the user-facing count (users
don't deploy to their own machine via a cloud provider). With cursor
disabled, the correct counts are 8 agents x 5 non-local clouds = 40
working combinations.

Agent: pr-maintainer
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: louisgv

README.md

@@ -2,7 +2,7 @@
 
 Launch any AI agent on any cloud with a single command. Coding agents, research agents, self-hosted AI tools — Spawn deploys them all. All models powered by [OpenRouter](https://openrouter.ai). (ALPHA software, use at your own risk!)
 
-**8 agents. 6 clouds. 48 working combinations. Zero config.**
+**8 agents. 5 clouds. 40 working combinations. Zero config.**
 
 ## Install