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]/juries/page.tsx

@@ -0,0 +1,187 @@
+'use client'
+
+import { useState } from 'react'
+import { useParams, useRouter } from 'next/navigation'
+import Link from 'next/link'
+import type { Route } from 'next'
+import { ArrowLeft, Plus, Users } from 'lucide-react'
+import { trpc } from '@/lib/trpc/client'
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Badge } from '@/components/ui/badge'
+import { Skeleton } from '@/components/ui/skeleton'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Textarea } from '@/components/ui/textarea'
+import { toast } from 'sonner'
+
+export default function JuriesListPage() {
+  const params = useParams()
+  const router = useRouter()
+  const competitionId = params.competitionId as string
+  const utils = trpc.useUtils()
+
+  const [createOpen, setCreateOpen] = useState(false)
+  const [formData, setFormData] = useState({
+    name: '',
+    description: '',
+  })
+
+  const { data: juryGroups, isLoading } = trpc.juryGroup.list.useQuery({ competitionId })
+
+  const createMutation = trpc.juryGroup.create.useMutation({
+    onSuccess: () => {
+      utils.juryGroup.list.invalidate({ competitionId })
+      toast.success('Jury group created')
+      setCreateOpen(false)
+      setFormData({ name: '', description: '' })
+    },
+    onError: (err) => toast.error(err.message),
+  })
+
+  const handleCreate = () => {
+    if (!formData.name.trim()) {
+      toast.error('Name is required')
+      return
+    }
+    const slug = formData.name
+      .toLowerCase()
+      .replace(/[^a-z0-9]+/g, '-')
+      .replace(/^-|-$/g, '')
+    createMutation.mutate({
+      competitionId,
+      name: formData.name.trim(),
+      slug,
+      description: formData.description.trim() || undefined,
+    })
+  }
+
+  if (isLoading) {
+    return (
+    <div className="container mx-auto space-y-6 p-4 sm:p-6">
+        <Skeleton className="h-10 w-full" />
+        <div className="grid gap-4 grid-cols-1 sm:grid-cols-2 lg:grid-cols-3">
+          {[1, 2, 3].map((i) => (
+            <Skeleton key={i} className="h-40" />
+          ))}
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className="container mx-auto space-y-6 p-4 sm:p-6">
+      <Button
+        variant="ghost"
+        onClick={() => router.back()}
+        className="mb-4"
+        aria-label="Back to competition details"
+      >
+        <ArrowLeft className="mr-2 h-4 w-4" />
+        Back
+      </Button>
+
+      <div className="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-4">
+        <div>
+          <h1 className="text-3xl font-bold">Jury Groups</h1>
+          <p className="text-muted-foreground">Manage jury groups and members for this competition</p>
+        </div>
+        <Button onClick={() => setCreateOpen(true)}>
+          <Plus className="mr-2 h-4 w-4" />
+          Create Jury Group
+        </Button>
+      </div>
+
+      {juryGroups && juryGroups.length === 0 ? (
+        <Card>
+          <CardContent className="flex flex-col items-center justify-center py-12">
+            <Users className="h-12 w-12 text-muted-foreground mb-4" />
+            <p className="text-muted-foreground text-center">No jury groups yet. Create one to get started.</p>
+          </CardContent>
+        </Card>
+      ) : (
+        <div className="grid gap-4 grid-cols-1 sm:grid-cols-2 lg:grid-cols-3">
+          {juryGroups?.map((group) => (
+            <Link
+              key={group.id}
+              href={`/admin/competitions/${competitionId}/juries/${group.id}` as Route}
+            >
+              <Card className="hover:bg-accent/50 transition-colors cursor-pointer h-full">
+                <CardHeader>
+                  <CardTitle className="flex items-center justify-between">
+                    {group.name}
+                    <Badge variant="secondary">{group.defaultCapMode}</Badge>
+                  </CardTitle>
+                  <CardDescription>{group.slug}</CardDescription>
+                </CardHeader>
+                <CardContent className="space-y-2">
+                  <div className="flex items-center justify-between text-sm">
+                    <span className="text-muted-foreground">Members</span>
+                    <span className="font-medium">{group._count.members}</span>
+                  </div>
+                  <div className="flex items-center justify-between text-sm">
+                    <span className="text-muted-foreground">Assignments</span>
+                    <span className="font-medium">{group._count.assignments || 0}</span>
+                  </div>
+                  <div className="flex items-center justify-between text-sm">
+                    <span className="text-muted-foreground">Default Max</span>
+                    <span className="font-medium">{group.defaultMaxAssignments}</span>
+                  </div>
+                </CardContent>
+              </Card>
+            </Link>
+          ))}
+        </div>
+      )}
+
+      {/* Create Jury Group Dialog */}
+      <Dialog open={createOpen} onOpenChange={setCreateOpen}>
+        <DialogContent>
+          <DialogHeader>
+            <DialogTitle>Create Jury Group</DialogTitle>
+            <DialogDescription>
+              Create a new jury group for this competition. You can add members after creation.
+            </DialogDescription>
+          </DialogHeader>
+          <div className="space-y-4">
+            <div className="space-y-2">
+              <Label htmlFor="jury-name">Name *</Label>
+              <Input
+                id="jury-name"
+                placeholder="e.g. Main Jury Panel"
+                value={formData.name}
+                onChange={(e) => setFormData({ ...formData, name: e.target.value })}
+              />
+            </div>
+            <div className="space-y-2">
+              <Label htmlFor="jury-description">Description</Label>
+              <Textarea
+                id="jury-description"
+                placeholder="Optional description of this jury group's role"
+                value={formData.description}
+                onChange={(e) => setFormData({ ...formData, description: e.target.value })}
+                rows={3}
+              />
+            </div>
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setCreateOpen(false)}>
+              Cancel
+            </Button>
+            <Button onClick={handleCreate} disabled={createMutation.isPending}>
+              {createMutation.isPending ? 'Creating...' : 'Create'}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+    </div>
+  )
+}