feat: country flag display in remaining app pages (mentor, jury, admin, applicant)

Extends CountryDisplay component usage to all remaining pages that showed
raw country codes: mentor dashboard/projects, jury competitions/awards,
admin awards/project detail, applicant team, and project-list-compact.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(jury)/jury/competitions/page.tsx

@@ -19,6 +19,7 @@ import {
   FileEdit,
 } from 'lucide-react'
 import { formatDateOnly, formatEnumLabel } from '@/lib/utils'
+import { CountryDisplay } from '@/components/shared/country-display'
 
 export default function JuryAssignmentsPage() {
   const router = useRouter()
@@ -135,7 +136,7 @@ export default function JuryAssignmentsPage() {
                                 {project.title}
                               </p>
                               <p className="text-xs text-muted-foreground mt-0.5">
-                                {[project.teamName, project.country].filter(Boolean).join(' \u00b7 ')}
+                                {project.teamName}{project.teamName && project.country ? ' · ' : ''}{project.country ? <CountryDisplay country={project.country} /> : ''}
                               </p>
                             </div>
                             <div className="flex items-center gap-2 shrink-0">