Say when a research run found no new sources

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/pages/Schedule.tsx

@@ -233,6 +233,7 @@ function RunHistory({ agentId }: { agentId: number }) {
           <span className={`status ${r.status === 'completed' ? 'ready' : 'draft'}`}><i className="dot"></i>{runStatus(r.status)}</span>
           {r.budget_spent != null && <span>{t('common.credits', { n: r.budget_spent })}</span>}
           {r.safe_error_code && <span className="error" title={r.safe_error_code}>{runError(r.safe_error_code)}</span>}
+          {r.source_outcome === 'no_new_sources' && <span>{t('sch.noNewSources')}</span>}
           {r.id === blockedId && <ReadinessIssues agentId={agentId} />}
         </li>
       ))}