Feature request: Per-session visible title with color coding

Summary

When working with multiple concurrent Claude Code sessions (e.g. several terminal tabs or tmux panes), it is difficult to tell sessions apart at a glance. A per-session title — visually prominent and color-coded — would make it much easier to orient yourself quickly.

Proposed feature

• A /title command (or equivalent) that sets a visible label displayed at the top of the session UI
• The title should be color-coded or styled so it stands out from the conversation content
• The title should be editable inline without restarting the session
• Optionally: persist the title across --resume so a resumed session remembers its label

Use case

A developer has 4 Claude Code sessions open simultaneously:

• pracsys — MR #408 fix grants callback
• pracsys — reskontro v2 design
• finsta — bug #321
• dotfiles — cleanup

Today these sessions are visually identical. With a titled, color-coded header, switching between tabs becomes instant recognition rather than reading context.

Workaround today

Setting the terminal window/tab title before launching Claude Code:

echo -ne "\033]0;Session name\007" && claude

This works at the terminal level but is external to Claude Code, requires setup before launch, and doesn't update dynamically.

Expected behavior

/title pracsys — MR #408

Sets a large, styled label visible at the top of the session. Color could be user-chosen or auto-assigned.