Feature Request: Allow customization of Knurl companion avatar/logo

Feature Request

What: Allow users to customize the Knurl companion's avatar/logo that sits beside the input box.

Why: Knurl is a great addition to Claude Code, but there's currently no way to personalize its appearance. Customization would make the companion feel more personal and improve the overall developer experience.

Suggested options:

• Pick from preset avatar styles/characters
• Upload a custom image/emoji
• Choose color themes for the companion
• Toggle companion visibility

Current behavior: Knurl's appearance is fixed with no customization options in settings.json or any config file.

Expected behavior: A setting (e.g., in ~/.claude/settings.json or via /settings) to change Knurl's avatar, style, or character.

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Submitted via Claude Code CLI