Update Ona description in tools appendix, fix VPC row

Co-authored-by: Ona <no-reply@ona.com>

Author: Siddhant-K-code

src/content/chapters/appendix-a-tools.mdx

@@ -61,8 +61,7 @@ less flexible but get you to production faster.
 ## Coding agents
 | Tool | Type | Pricing | Best For |
 | --- | --- | --- | --- |
-| [Ona](https://ona.com) | Autonomous | Usage-based | Autonomous end-to-end development, fleet-scale migrations, enterprise
-  (VPC) |
+| [Ona](https://ona.com) | Autonomous | Usage-based | Production-grade fully autonomous engineering with full environment access, secure sandboxed execution, multi-repo migrations at scale, enterprise (VPC) |
 | [Claude Code](https://claude.ai) | CLI + IDE | Usage-based | Deep codebase reasoning |
 | [OpenAI Codex](https://openai.com/codex) | Cloud | Usage-based | Parallel task execution |
 | [Cursor](https://cursor.com) | IDE | $20/month | Real-time code generation |