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/layouts/admin-sidebar.tsx

@@ -28,12 +28,12 @@ import {
   ChevronRight,
   BookOpen,
   Handshake,
-  CircleDot,
   History,
   Trophy,
   User,
   MessageSquare,
   LayoutTemplate,
+  Medal,
 } from 'lucide-react'
 import { getInitials } from '@/lib/utils'
 import { Logo } from '@/components/shared/logo'
@@ -69,9 +69,9 @@ const navigation: NavItem[] = [
     icon: LayoutDashboard,
   },
   {
-    name: 'Rounds',
-    href: '/admin/rounds/pipelines',
-    icon: CircleDot,
+    name: 'Competitions',
+    href: '/admin/competitions',
+    icon: Medal,
   },
   {
     name: 'Awards',
@@ -223,7 +223,7 @@ export function AdminSidebar({ user }: AdminSidebarProps) {
                 pathname === item.href ||
                 (item.href !== '/admin' && pathname.startsWith(item.href))
               const isParentActive = item.subItems
-                ? pathname.startsWith('/admin/rounds')
+                ? pathname.startsWith('/admin/competitions')
                 : false
               return (
                 <div key={item.name}>
@@ -247,7 +247,7 @@ export function AdminSidebar({ user }: AdminSidebarProps) {
                     <div className="ml-7 mt-0.5 space-y-0.5">
                       {item.subItems.map((sub) => {
                         const isSubActive = pathname === sub.href ||
-                          (sub.href !== '/admin/rounds' && pathname.startsWith(sub.href))
+                          (sub.href !== '/admin/competitions' && pathname.startsWith(sub.href))
                         return (
                           <Link
                             key={sub.name}