Competition/Round architecture: full platform rewrite (Phases 1-9)

Replace Pipeline/Stage system with Competition/Round architecture.
New schema: Competition, Round (7 types), JuryGroup, AssignmentPolicy,
ProjectRoundState, DeliberationSession, ResultLock, SubmissionWindow.
New services: round-engine, round-assignment, deliberation, result-lock,
submission-manager, competition-context, ai-prompt-guard.
Full admin/jury/applicant/mentor UI rewrite. AI prompt hardening with
structured prompts, retry logic, and injection detection. All legacy
pipeline/stage code removed. 4 new migrations + seed aligned.

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

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

@@ -0,0 +1,37 @@
+'use client';
+
+import { use } from 'react';
+import { useRouter } from 'next/navigation';
+import { Button } from '@/components/ui/button';
+import { ArrowLeft } from 'lucide-react';
+import { LiveControlPanel } from '@/components/admin/live/live-control-panel';
+import type { Route } from 'next';
+
+export default function LiveFinalsPage({
+  params: paramsPromise
+}: {
+  params: Promise<{ competitionId: string; roundId: string }>;
+}) {
+  const params = use(paramsPromise);
+  const router = useRouter();
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center gap-4">
+        <Button
+          variant="ghost"
+          size="icon"
+          onClick={() => router.push(`/admin/competitions/${params.competitionId}` as Route)}
+        >
+          <ArrowLeft className="h-4 w-4" />
+        </Button>
+        <div>
+          <h1 className="text-3xl font-bold">Live Finals Control</h1>
+          <p className="text-muted-foreground">Manage live ceremony presentation and voting</p>
+        </div>
+      </div>
+
+      <LiveControlPanel roundId={params.roundId} competitionId={params.competitionId} />
+    </div>
+  );
+}