Claude in Chrome: extension shows Installed/Enabled but MCP tools report "not connected" with no popup on broadcast

Environment

• Claude Code version: 2.1.116
• OS: macOS (Darwin 25.4.0)
• Chrome: latest, multiple profiles open simultaneously
• Account: same Claude account used in CLI and in target Chrome profile

What I see

Running /chrome in Claude Code reports:

Status: Enabled
Extension: Installed

But every mcp__claude-in-chrome__* tool call returns:

Browser extension is not connected. Please ensure the Claude browser extension is installed and running...

Calling mcp__claude-in-chrome__switch_browser (which should broadcast a connect prompt to all Chrome browsers with the extension) does not trigger any popup or prompt in any Chrome profile.

Steps already tried

1. Reinstalled the extension via https://claude.ai/chrome
2. Fully quit Chrome (Cmd+Q) and reopened
3. Verified the same Claude account is logged in on claude.ai in the target profile and in Claude Code
4. Selected "Reconnect extension" from /chrome menu
5. Clicked the Claude extension icon in the target profile — popup opens, but contains no "Connect to Claude Code" or similar pairing button
6. Confirmed extension is enabled at chrome://extensions/

Expected

Either the broadcast triggers a Connect prompt in the desired Chrome profile, or the extension popup exposes a way to pair with the Claude Code session.

Actual

No connection ever established; no UI element in the popup to initiate one. Claude Code reports the bridge as Enabled, so the failure appears to be on the extension side or in the bridge handshake.

Notes

• Multiple Chrome profiles are open simultaneously — unclear if this contributes.