Allow custom slash commands to switch default model

[crsmithdev]

Feature Request

Allow custom slash commands to execute built-in commands like /model haiku or provide a mechanism to change the session's default model programmatically.

Use case: Creating shortcut commands like /h that can both:

1. Switch default model to haiku when run without args
2. Run a one-off query with haiku when given args

Current behavior: The model: frontmatter in slash commands only affects that command's execution model, not the session default. Editing settings.json doesn't take effect until restart.

Desired behavior: Either:

• Live-reload settings.json when modified
• Expose a mechanism for slash commands to call built-in commands
• Add a switch_model: frontmatter option that persists the change

[github-actions[bot]]

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/7795
2. https://github.com/anthropics/claude-code/issues/4937
3. https://github.com/anthropics/claude-code/issues/12645

This issue will be automatically closed as a duplicate in 3 days.

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[github-actions[bot]]

This issue has been automatically closed as a duplicate of #7795.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions[bot]]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.