Customizable terminal title with AI-generated activity summary

Feature Request

Problem

Claude Code sets the terminal title to a static * Claude Code string, which overwrites any shell-set title (e.g., hostname + cwd from a precmd hook). The only option is CLAUDE_CODE_DISABLE_TERMINAL_TITLE=1, which disables it entirely.

When running multiple Claude Code sessions across machines (e.g., local Mac + remote EC2 via tmux), there's no way to tell which session is which or what each is working on from the title bar alone.

Proposed Solution

A terminalTitleTemplate setting in settings.json that supports variables like:

• {hostname} — machine hostname
• {cwd} — current working directory (basename or abbreviated)
• {summary} — AI-generated 2-6 word summary of current activity (e.g., "fixing auth tests", "exploring codebase", "writing migration")

Example config:

{
  "terminalTitleTemplate": "{hostname}:{cwd} — {summary}"
}

Would produce titles like:

• Banshee:~/code/mldev — fixing OIDC auth
• ml-analytics:~/code/ccost — running pipeline tests

Why This Matters

• Users with multiple sessions across machines can instantly identify each tab/window
• The AI-generated summary adds real value over static labels — Claude already knows what it's doing
• Works naturally with iTerm2 tabs, tmux set-titles, and other terminal multiplexers

Current Workaround

Disable Claude Code's title entirely via CLAUDE_CODE_DISABLE_TERMINAL_TITLE=1 and rely on shell precmd hooks for hostname + path. This loses any Claude-specific context in the title.