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/(applicant)/applicant/competitions/page.tsx

@@ -0,0 +1,124 @@
+'use client'
+
+import { useSession } from 'next-auth/react'
+import Link from 'next/link'
+import type { Route } from 'next'
+import { trpc } from '@/lib/trpc/client'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { Skeleton } from '@/components/ui/skeleton'
+import { ApplicantCompetitionTimeline } from '@/components/applicant/competition-timeline'
+import { ArrowLeft, FileText, Calendar } from 'lucide-react'
+import { toast } from 'sonner'
+
+export default function ApplicantCompetitionsPage() {
+  const { data: session } = useSession()
+  const { data: myProject, isLoading } = trpc.applicant.getMyDashboard.useQuery(undefined, {
+    enabled: !!session,
+  })
+
+  if (isLoading) {
+    return (
+      <div className="space-y-6">
+        <Skeleton className="h-8 w-64" />
+        <Skeleton className="h-96" />
+      </div>
+    )
+  }
+
+  const competitionId = myProject?.project?.programId
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between">
+        <div>
+          <h1 className="text-2xl font-bold tracking-tight">Competition Timeline</h1>
+          <p className="text-muted-foreground mt-1">
+            Track your progress through competition rounds
+          </p>
+        </div>
+        <Button variant="ghost" size="sm" asChild>
+          <Link href={'/applicant' as Route} aria-label="Back to applicant dashboard">
+            <ArrowLeft className="mr-2 h-4 w-4" />
+            Back to Dashboard
+          </Link>
+        </Button>
+      </div>
+
+      {!competitionId ? (
+        <Card>
+          <CardContent className="flex flex-col items-center justify-center py-12">
+            <FileText className="h-12 w-12 text-muted-foreground/50 mb-4" />
+            <h2 className="text-xl font-semibold mb-2">No Active Competition</h2>
+            <p className="text-muted-foreground text-center max-w-md">
+              You don&apos;t have an active project in any competition yet. Submit your application
+              when a competition opens.
+            </p>
+          </CardContent>
+        </Card>
+      ) : (
+        <div className="grid gap-6 lg:grid-cols-3">
+          <div className="lg:col-span-2">
+            <ApplicantCompetitionTimeline competitionId={competitionId} />
+          </div>
+          <div className="space-y-4">
+            <Card>
+              <CardHeader>
+                <CardTitle className="flex items-center gap-2">
+                  <Calendar className="h-5 w-5" />
+                  Quick Actions
+                </CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-3">
+                <Button variant="outline" className="w-full justify-start" asChild>
+                  <Link href={'/applicant/documents' as Route}>
+                    <FileText className="mr-2 h-4 w-4" />
+                    View Documents
+                  </Link>
+                </Button>
+                {myProject?.openRounds && myProject.openRounds.length > 0 && (
+                  <p className="text-sm text-muted-foreground px-3 py-2 bg-muted/50 rounded-md">
+                    {myProject.openRounds.length} submission window
+                    {myProject.openRounds.length !== 1 ? 's' : ''} currently open
+                  </p>
+                )}
+              </CardContent>
+            </Card>
+
+            <Card>
+              <CardHeader>
+                <CardTitle>Timeline Info</CardTitle>
+              </CardHeader>
+              <CardContent className="space-y-2 text-sm">
+                <div className="flex justify-between">
+                  <span className="text-muted-foreground">Current Status:</span>
+                  <span className="font-medium">
+                    {myProject?.currentStatus || 'Unknown'}
+                  </span>
+                </div>
+                {myProject?.project && (
+                  <>
+                    <div className="flex justify-between">
+                      <span className="text-muted-foreground">Project:</span>
+                      <span className="font-medium truncate ml-2" title={myProject.project.title}>
+                        {myProject.project.title}
+                      </span>
+                    </div>
+                    {myProject.project.submittedAt && (
+                      <div className="flex justify-between">
+                        <span className="text-muted-foreground">Submitted:</span>
+                        <span className="font-medium">
+                          {new Date(myProject.project.submittedAt).toLocaleDateString()}
+                        </span>
+                      </div>
+                    )}
+                  </>
+                )}
+              </CardContent>
+            </Card>
+          </div>
+        </div>
+      )}
+    </div>
+  )
+}