IDE: Workflow Run Tab and Steering Warnings

This release adds a Workflow tab that opens a workflow run with its step tree beside the selected step's transcript, and shows the Kiro Agent version in the About dialog. It also flags steering documents Kiro could not fully use, and fixes Agent Focus projects that did not reappear when you opened them, early sign-out at the end of an IAM Identity Center session, and log views that stopped updating.