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/competition/competition-timeline.tsx

@@ -0,0 +1,156 @@
+'use client'
+
+import Link from 'next/link'
+import type { Route } from 'next'
+import { Badge } from '@/components/ui/badge'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { cn } from '@/lib/utils'
+import { format } from 'date-fns'
+import { CheckCircle2, Circle, Clock } from 'lucide-react'
+
+const roundTypeColors: Record<string, string> = {
+  INTAKE: 'bg-gray-100 text-gray-700 border-gray-300',
+  FILTERING: 'bg-amber-100 text-amber-700 border-amber-300',
+  EVALUATION: 'bg-blue-100 text-blue-700 border-blue-300',
+  SUBMISSION: 'bg-purple-100 text-purple-700 border-purple-300',
+  MENTORING: 'bg-teal-100 text-teal-700 border-teal-300',
+  LIVE_FINAL: 'bg-red-100 text-red-700 border-red-300',
+  DELIBERATION: 'bg-indigo-100 text-indigo-700 border-indigo-300',
+}
+
+const roundStatusConfig: Record<string, { icon: typeof Circle; color: string }> = {
+  ROUND_DRAFT: { icon: Circle, color: 'text-gray-400' },
+  ROUND_ACTIVE: { icon: Clock, color: 'text-emerald-500' },
+  ROUND_CLOSED: { icon: CheckCircle2, color: 'text-blue-500' },
+  ROUND_ARCHIVED: { icon: CheckCircle2, color: 'text-gray-400' },
+}
+
+type RoundSummary = {
+  id: string
+  name: string
+  slug: string
+  roundType: string
+  status: string
+  sortOrder: number
+  windowOpenAt: Date | string | null
+  windowCloseAt: Date | string | null
+}
+
+export function CompetitionTimeline({
+  competitionId,
+  rounds,
+}: {
+  competitionId: string
+  rounds: RoundSummary[]
+}) {
+  if (rounds.length === 0) {
+    return (
+      <Card className="border-dashed">
+        <CardContent className="py-8 text-center text-sm text-muted-foreground">
+          No rounds configured yet. Add rounds to see the competition timeline.
+        </CardContent>
+      </Card>
+    )
+  }
+
+  return (
+    <Card>
+      <CardHeader className="pb-3">
+        <CardTitle className="text-base">Round Timeline</CardTitle>
+      </CardHeader>
+      <CardContent>
+        {/* Desktop: horizontal timeline */}
+        <div className="hidden md:block overflow-x-auto pb-2">
+          <div className="flex items-start gap-0 min-w-max">
+            {rounds.map((round, index) => {
+              const statusCfg = roundStatusConfig[round.status] ?? roundStatusConfig.ROUND_DRAFT
+              const StatusIcon = statusCfg.icon
+              const isLast = index === rounds.length - 1
+
+              return (
+                <div key={round.id} className="flex items-start">
+                  <Link
+                    href={`/admin/competitions/${competitionId}/rounds/${round.id}` as Route}
+                    className="group flex flex-col items-center text-center w-32 shrink-0"
+                  >
+                    <div className="relative">
+                      <StatusIcon className={cn('h-6 w-6', statusCfg.color)} />
+                    </div>
+                    <p className="mt-2 text-xs font-medium group-hover:text-primary transition-colors line-clamp-2">
+                      {round.name}
+                    </p>
+                    <Badge
+                      variant="secondary"
+                      className={cn(
+                        'mt-1 text-[9px]',
+                        roundTypeColors[round.roundType] ?? ''
+                      )}
+                    >
+                      {round.roundType.replace('_', ' ')}
+                    </Badge>
+                    {round.windowOpenAt && (
+                      <p className="mt-1 text-[10px] text-muted-foreground">
+                        {format(new Date(round.windowOpenAt), 'MMM d')}
+                        {round.windowCloseAt && (
+                          <> - {format(new Date(round.windowCloseAt), 'MMM d')}</>
+                        )}
+                      </p>
+                    )}
+                  </Link>
+                  {!isLast && (
+                    <div className="mt-3 h-px w-8 bg-border shrink-0" />
+                  )}
+                </div>
+              )
+            })}
+          </div>
+        </div>
+
+        {/* Mobile: vertical timeline */}
+        <div className="md:hidden space-y-0">
+          {rounds.map((round, index) => {
+            const statusCfg = roundStatusConfig[round.status] ?? roundStatusConfig.ROUND_DRAFT
+            const StatusIcon = statusCfg.icon
+            const isLast = index === rounds.length - 1
+
+            return (
+              <div key={round.id}>
+                <Link
+                  href={`/admin/competitions/${competitionId}/rounds/${round.id}` as Route}
+                  className="flex items-start gap-3 py-2 hover:bg-muted/50 rounded-md px-2 -mx-2 transition-colors"
+                >
+                  <div className="flex flex-col items-center shrink-0">
+                    <StatusIcon className={cn('h-5 w-5', statusCfg.color)} />
+                    {!isLast && <div className="w-px flex-1 bg-border mt-1 min-h-[16px]" />}
+                  </div>
+                  <div className="flex-1 min-w-0 pb-2">
+                    <div className="flex items-center gap-2">
+                      <p className="text-sm font-medium truncate">{round.name}</p>
+                      <Badge
+                        variant="secondary"
+                        className={cn(
+                          'text-[9px] shrink-0',
+                          roundTypeColors[round.roundType] ?? ''
+                        )}
+                      >
+                        {round.roundType.replace('_', ' ')}
+                      </Badge>
+                    </div>
+                    {round.windowOpenAt && (
+                      <p className="text-[11px] text-muted-foreground mt-0.5">
+                        {format(new Date(round.windowOpenAt), 'MMM d, yyyy')}
+                        {round.windowCloseAt && (
+                          <> - {format(new Date(round.windowCloseAt), 'MMM d, yyyy')}</>
+                        )}
+                      </p>
+                    )}
+                  </div>
+                </Link>
+              </div>
+            )
+          })}
+        </div>
+      </CardContent>
+    </Card>
+  )
+}