Model setting in settings.json not respected at session start

Description

The model field in ~/.claude/settings.json is not being respected at session initialization. The session starts on claude-opus-4-6 despite the setting specifying claude-opus-4-7.

Steps to Reproduce

1. Set "model": "claude-opus-4-7" in ~/.claude/settings.json
2. Start a new Claude Code session
3. Session reports: "You are powered by the model named Opus 4.6. The exact model ID is claude-opus-4-6@default."

Expected Behavior

Session should start on claude-opus-4-7 as configured.

Actual Behavior

Session starts on claude-opus-4-6. However, running /model claude-opus-4-7 mid-session successfully switches to Opus 4.7, confirming the model is available on the account.

Workaround

Using the CLI flag works: claude --model claude-opus-4-7

Environment

• Claude Code version: 2.1.113
• Platform: Windows 11 Pro (Git Bash)
• No project-level settings overriding the global config