[FEATURE] Enable Ruby 3.4+ in claude code web sandboxes

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Request

Please add Ruby 3.4.x and 4.0.x (ideally the latest 3.4 patch release) to the sandbox base image, following the same pattern as the existing installations under /opt/ruby-* and registered with rbenv.

Ruby 3.4.0 was released December 2024 and is now the current stable series. Many production Rails applications have adopted it.

Workaround

None for now. Due to strict version locking we can't relax our ruby version on our project

Environment

• Platform: Claude Code on the web (remote sandbox)
• OS: Ubuntu 24.04 (x86_64)
• rbenv installed at /opt/rbenv
• ruby-build plugin available but cannot download sources

Proposed Solution

Allow 3.4+ versions in the sandbox

Alternative Solutions

Use Claude code locally

Priority

Medium - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_