Round detail overhaul, file requirements, project management, audit log fix

- Redesign round detail page with 6 tabs (overview, projects, filtering, assignments, config, documents)
- Add jury group assignment selector in round stats bar
- Add FileRequirementsEditor component replacing SubmissionWindowManager
- Add FilteringDashboard component for AI-powered project screening
- Add project removal from rounds (single + bulk) with cascading to subsequent rounds
- Add project add/remove UI in ProjectStatesTable with confirmation dialogs
- Fix logAudit inside $transaction pattern across all 12 router files
  (PostgreSQL aborted-transaction state caused silent operation failures)
- Fix special awards creation, deletion, status update, and winner assignment

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(admin)/admin/competitions/[competitionId]/page.tsx

@@ -362,7 +362,6 @@ export default function CompetitionDetailPage() {
                       </div>
                       <div className="min-w-0 flex-1">
                         <p className="text-sm font-medium truncate">{round.name}</p>
-                        <p className="text-xs text-muted-foreground font-mono">{round.slug}</p>
                       </div>
                       <Badge
                         variant="secondary"