docs: sync README with source of truth (#3097)

- update tagline: 8 agents/48 combos -> 9 agents/54 combos
- add Cursor CLI row to matrix table

manifest.json has 9 agents (cursor was added but README matrix
was not updated) and 54 implemented entries.

Co-authored-by: spawn-qa-bot <qa@openrouter.ai>
Co-authored-by: Ahmed Abushagur <ahmed@abushagur.com>

Author: 3 people

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.**
+**9 agents. 6 clouds. 54 working combinations. Zero config.**
 
 ## Install
 
@@ -330,6 +330,7 @@ If an agent fails to install or launch on a cloud:
 | [**Kilo Code**](https://github.com/Kilo-Org/kilocode) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | [**Hermes Agent**](https://github.com/NousResearch/hermes-agent) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | [**Junie**](https://www.jetbrains.com/junie/) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
+| [**Cursor CLI**](https://cursor.com/cli) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 
 ### How it works