Browser extension shows "not connected" even after reinstall + full Chrome restart

The Claude-in-Chrome extension consistently reports as not connected when Claude Code tries to use it (via tabs_context_mcp / any claude-in-chrome tool), even after:

1. Verifying the extension was installed and showing as connected in Chrome's toolbar
2. Uninstalling and reinstalling the extension from https://claude.ai/chrome
3. Fully closing and reopening Chrome (all windows)

Every attempt after each of these steps returns the same error:

"Browser extension is not connected. Please ensure the Claude browser extension is installed and running (https://claude.ai/chrome), and that you are logged into claude.ai with the same account as Claude Code."

Environment:

• OS: Windows 11 Pro
• Claude Code: CLI, running in [PowerShell/terminal — fill in if relevant]
• Browser: Chrome (latest)

Expected: after reinstalling and restarting Chrome, the extension should register with Claude Code and tabs_context_mcp (or any claude-in-chrome tool call) should succeed.