[BUG] Model selection in gateway mode lags other providers

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When I select a model, such as opus it uses Opus 4.7 by default.

What Should Happen?

I expect Opus 5.5 to be used by default as is done on other platforms.

Error Messages/Logs

Steps to Reproduce

1. Configure claude to use the apps gateway. ("forceLoginMethod": "gateway")
2. Run /model, and select Opus

❯ /model
  ⎿  Set model to Opus 4.7 and saved as your default for new sessions

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.282 (Claude Code)

Platform

AWS Bedrock

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_

❯ /model haiku
  ⎿  Set model to Haiku 4.5 and saved as your default for new sessions

❯ /model claude-haiku-5-5
  ⎿  Set model to Haiku 5.5 and saved as your default for new sessions