Show what was removed after app uninstall #2000

Most people open the uninstall window's details after the uninstall has finished, but the panel still shows the CLI's plan: "This will remove kcap from your machine:" followed by a list of file paths, in the future tense.

Once uninstall succeeds, the details should list what was removed in plain, past-tense language: coding agents disconnected, background services removed, settings and sign-in removed, the local server deleted when it was purged, the app moved to the Trash. The raw log should stay available while uninstall runs and when it fails, since that is when it helps.