MCPLoginScreen

Esc unblocks the worker; the worker performs the actual shutdown.

Cancellation completes any outstanding input future with MCPLoginCancelledError. The worker (_run_mcp_login_worker) sees that exception, calls finish(success=False), and tears down the OAuth handshake. Doing the teardown here would race the worker.

True once the modal has been told to finish (success or failure).

Public accessor for callers that need to coordinate teardown from outside the screen, e.g. the worker's BaseException branch that unblocks dismiss without re-finishing.

Compose the modal body inside a Vertical container.

Apply ASCII border when configured and start the spinner ticker.

Open style-embedded hyperlinks (the authorize and verification URLs).

Render the authorize URL as a clickable link with surrounding text.

Wait for the user to paste back the OAuth callback URL.

Render RFC 8628 device-code instructions inline.

Render a success status line and append it to the history pane.

Append a progress notice without disrupting the active prompt.

Render a fatal (flow-ending) error status line and history entry.

Resolve the active prompt with the submitted value.

Cancel the login flow.

Sets a cancelled flag, completes any outstanding prompt with MCPLoginCancelledError so the worker unblocks, and dismisses the modal with the cancelled outcome.

Close the modal from the worker, reporting the final outcome.

Dismiss is deferred by 0.6s so the user sees the final status before the modal disappears.