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/components/admin/assignment/coverage-report.tsx

@@ -0,0 +1,98 @@
+'use client'
+
+import { trpc } from '@/lib/trpc/client'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Skeleton } from '@/components/ui/skeleton'
+import { AlertCircle, CheckCircle2, Users } from 'lucide-react'
+
+interface CoverageReportProps {
+  roundId: string
+}
+
+export function CoverageReport({ roundId }: CoverageReportProps) {
+  const { data: coverage, isLoading } = trpc.roundAssignment.coverageReport.useQuery({
+    roundId,
+    requiredReviews: 3,
+  })
+
+  if (isLoading) {
+    return (
+      <div className="grid gap-4 grid-cols-1 sm:grid-cols-2 lg:grid-cols-3">
+        {[1, 2, 3].map((i) => (
+          <Skeleton key={i} className="h-32" />
+        ))}
+      </div>
+    )
+  }
+
+  if (!coverage) {
+    return <p className="text-muted-foreground">No coverage data available</p>
+  }
+
+  const totalAssigned = coverage.fullyAssigned || 0
+  const totalProjects = coverage.totalProjects || 0
+  const avgPerJuror = coverage.avgReviewsPerProject?.toFixed(1) || '0'
+  const unassignedCount = coverage.unassigned || 0
+
+  return (
+    <div className="space-y-4">
+      <div className="grid gap-4 grid-cols-1 sm:grid-cols-2 lg:grid-cols-3">
+        <Card>
+          <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+            <CardTitle className="text-sm font-medium">Total Assigned</CardTitle>
+            <CheckCircle2 className="h-4 w-4 text-green-600" />
+          </CardHeader>
+          <CardContent>
+            <div className="text-2xl font-bold">{totalAssigned}</div>
+            <p className="text-xs text-muted-foreground">
+              {totalProjects > 0
+                ? `${((totalAssigned / totalProjects) * 100).toFixed(1)}% coverage`
+                : 'No projects'}
+            </p>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+            <CardTitle className="text-sm font-medium">Avg Per Juror</CardTitle>
+            <Users className="h-4 w-4 text-blue-600" />
+          </CardHeader>
+          <CardContent>
+            <div className="text-2xl font-bold">{avgPerJuror}</div>
+            <p className="text-xs text-muted-foreground">Assignments per juror</p>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
+            <CardTitle className="text-sm font-medium">Unassigned</CardTitle>
+            <AlertCircle className="h-4 w-4 text-amber-600" />
+          </CardHeader>
+          <CardContent>
+            <div className="text-2xl font-bold">{unassignedCount}</div>
+            <p className="text-xs text-muted-foreground">
+              Projects below 3 reviews
+            </p>
+          </CardContent>
+        </Card>
+      </div>
+
+      {coverage.unassigned > 0 && (
+        <Card className="border-amber-500">
+          <CardHeader>
+            <CardTitle className="text-sm">Coverage Warnings</CardTitle>
+            <CardDescription>Issues detected in assignment coverage</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <ul className="space-y-1 text-sm">
+              <li className="flex items-start gap-2">
+                <AlertCircle className="h-4 w-4 text-amber-600 mt-0.5 flex-shrink-0" />
+                <span>{coverage.unassigned} projects have insufficient coverage</span>
+              </li>
+            </ul>
+          </CardContent>
+        </Card>
+      )}
+    </div>
+  )
+}