[BUG] 1M context window not activating after update to 1.1.7714 (Desktop, Windows, Max Plan)

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?

Environment

• Claude Code Desktop v1.1.7714 (3bd6f6)
• Windows 11 Pro 10.0.26200
• Plan: Max (paid)
• Model: claude-opus-4-6

What happened

Before the update, the 1M context window was active — a "1M" icon was displayed next to the model name in the UI. After updating to v1.1.7714, the icon disappeared and /context shows 200k limit instead of 1M.

Configuration

My ~/.claude/settings.json contains:

{
  "model": "opus[1m]",
  "env": {
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-4-6[1m]"
  }
}


### What Should Happen?

With Max Plan, the 1M context window should activate when "model": "opus[1m]" is set in settings.json. The /context command should show "Tokens: XX.Xk / 1000k" and the 1M icon should appear next to the model name, as it did before the update.


### Error Messages/Logs

```shell

Steps to Reproduce

Both settings are ignored — /context still reports 200k.

Steps to reproduce

1. Update Claude Code Desktop to v1.1.7714
2. Open any project
3. Run /context
4. Observe: Tokens: XX.Xk / 200k instead of / 1000k
5. Expected behavior

With Max Plan and "model": "opus[1m]" in settings, context window should be 1M (1,000k tokens), as it was before the update.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.7714 (3bd6f6)

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

Using Claude Code Desktop app (not CLI terminal). Windows 11 Pro.