Claude in Chrome extension unreachable from cloud Cowork session after account mismatch

Setup: Cowork cloud session started from the Claude desktop app; Chrome extension installed and enabled.

Symptom: tabs_context_mcp consistently returns "Browser extension is not connected" (~8 attempts over an hour). The extension side panel initially showed: "You're signed into claude.ai as a different account... Browser actions run as the extension's account". After signing claude.ai in Chrome back to the matching account, the connection error persisted.

Tried: extension toggle off/on; full Chrome restart; full extension remove + reinstall + Chrome restart; desktop app restart (the remote-devices bridge reconnected successfully afterward, so the desktop bridge itself is healthy — only the Chrome extension remains unreachable).

Expected: after re-login and reinstall, the extension should re-pair with the account or surface a clearer recovery path.

Suspected: stale account binding in the extension surviving reinstall, or cloud-session-to-extension pairing not refreshing.