Feature request: Add browser tab group cleanup to Claude in Chrome extension

Summary

When using the Claude in Chrome browser automation, tab groups created for testing persist after Claude finishes using the browser. It would be helpful to have automatic cleanup or a dedicated tool to close the tab group.

Current Behavior

1. Claude creates an MCP tab group via tabs_context_mcp
2. Tests/automation runs, potentially creating multiple tabs
3. When Claude is done, the tab group remains open
4. Over multiple sessions, this accumulates tab groups in the browser

Proposed Solutions

Option A: Automatic cleanup (preferred)

• When Claude stops interacting with the browser for X minutes, automatically close the MCP tab group
• Or when the Claude Code session ends, trigger cleanup

Option B: Explicit cleanup tool

Add a new tool like tabs_close_group_mcp that closes all tabs in the MCP tab group:

mcp__claude-in-chrome__tabs_close_group_mcp()
// Closes all tabs in the current MCP tab group

Option C: Configuration option

Add a setting in the extension to "auto-close tab group when Claude disconnects"

Workaround

Currently using keyboard shortcuts (Ctrl+Shift+W) as a workaround, but this is fragile and doesn't always work reliably.

Use Case

Running E2E tests via custom slash commands (/run-e2e, /test-feature) that spawn multiple browser tabs. After tests complete, the tab group should be cleaned up to avoid clutter.