feat: this session's errors in the status pane, newest first

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/status.go

@@ -102,6 +102,7 @@ func (m Model) statusFields() []panes.Field {
 	}
 
 	out = append(out, m.expiringFields()...)
+	out = append(out, m.errorFields()...)
 
 	for i, path := range m.configFiles {
 		label := ""