Show session name in terminal tab title

Feature Request

When a session has a name (via /rename or --resume), display the session name in the terminal tab title instead of (or in addition to) the current message summary.

Current Behavior

• Terminal tab shows a summary of the current question/message (e.g., "* Session Name Display")
• This updates with each new message

Proposed Behavior

• When a session is named, show the session name in the terminal title
• Example: " 2025 videos" or " 2025 videos - current question..."

Rationale

When working with multiple Claude Code sessions in different terminal tabs, it would be helpful to identify sessions by their meaningful names rather than the last question asked. The terminal title-setting mechanism already exists, so this should be a straightforward change.