Idle session still triggers iTerm2 tab activity indicator (spinner)

Description

When Claude Code is waiting for user input (idle state), the iTerm2 tab title still shows a spinning activity indicator. This makes it impossible to distinguish between an actively processing session and an idle one just by looking at the tab.

Expected behavior

• Processing: Tab shows spinner/activity indicator
• Idle (waiting for input): Tab stops the spinner, shows a static title

Current behavior

The tab spinner keeps spinning regardless of whether Claude Code is actively working or just sitting at the input prompt.

Environment

• Claude Code version: 2.1.150
• Terminal: iTerm2
• OS: macOS (Apple Silicon)

Impact

When running multiple Claude Code sessions in different iTerm tabs, it's difficult to tell at a glance which sessions are actively working and which are idle.