Configurable auto-generated session titles (short keyword style)

Claude Code auto-generates a session title from the first prompt, which is great, but there's no way to control its style or length. It would be useful to have a setting that makes the auto-title short and keyword-based (e.g., max 3 words) instead of a full sentence/summary — similar to how some chat apps generate compact tab labels.

Suggested options:

• A config setting (e.g., titleStyle: "keywords" | "sentence")
• A max word/character limit for auto-generated titles

This would make session lists easier to scan, especially with many concurrent sessions.