Flags the server whose last connection attempt failed with a red card
border, cleared when another server is connected or a new connection is
attempted — a persistent, at-a-glance companion to the failure toast and
the auto-opened monitoring column.
- App tracks `failedServerId`: set in onToggleConnection's non-auth
handshake catch, cleared at the start of any new connect attempt. It is
deliberately kept out of resetSessionScopedUiState, since the failure's
own `disconnect` event would otherwise clear it the same tick (that same
event clears `activeServer`, which is why the flag is tracked separately).
- New `errored` Card theme variant (red border via a new
`--inspector-error-border` token), mirroring the `highlighted` green
border. Precedence: disabled (dimmed) > errored > highlighted.
- Plumbed `erroredServerId` through InspectorView → ServerListScreen →
ServerCard (`errored` prop).
Full `npm run ci` passes (validate + coverage + smoke + storybook).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BrihGWcrM9JGRyu41nzZYw
c6999dff96