improvement(readme): add e2b reference to readme

[icecrasher321]

Summary

Add E2B reference to readme similar to others.

Type of Change

• Documentation

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
docs	Building	Preview	Comment	Sep 10, 2025 5:53pm
sim	Building	Preview	Comment	Sep 10, 2025 5:53pm

[greptile-apps]

Greptile Summary

This pull request adds a single line to the README.md file documenting E2B (https://www.e2b.dev/) as the remote code execution service used by Sim Studio AI. The addition follows the established formatting pattern in the Tech Stack section, where other technologies and services are documented with their respective links.

The change maintains consistency with the existing documentation structure by using the same markdown format (- **Category**: [Service Name](URL)) and appears to be placed in appropriate alphabetical ordering within the tech stack list. This documentation update helps provide a complete picture of the technologies powering the Sim platform, specifically highlighting the remote code execution capabilities that are likely essential for the AI workflow execution features.

The change aligns with good documentation practices by ensuring all major dependencies and services are properly referenced, making it easier for developers, contributors, and users to understand the complete technology landscape of the project.

Confidence score: 5/5

• This PR is safe to merge with minimal risk as it only adds documentation
• Score reflects a simple, well-formatted documentation addition with no functional code changes
• No files require special attention - this is a straightforward README update

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