Claude in Chrome shows "Connected" in Connectors panel, but session reports extension not connected

I'm using Claude in Cowork mode. The Connectors panel shows Claude in Chrome as Connected (checkmark, listed as Desktop/Included), and I confirmed the global Settings toggle is also on. Despite this, the session repeatedly reports "Browser extension is not connected" when it tries to use browser tools.

What I've already tried:

Confirmed this conversation is running on the same computer as Chrome (a Samsung Windows laptop)
Fully removed and reinstalled the Claude Chrome extension
Fully quit and restarted Chrome (not just closed the window)
Confirmed the Connectors panel shows Claude in Chrome as Connected with a checkmark
Retried the connection multiple times after each fix, all failed the same way

This same setup has worked reliably for many hours in past sessions on this same computer and account, so this looks like a regression rather than a first-time setup issue.