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/(mentor)/mentor/projects/page.tsx

@@ -23,6 +23,7 @@ import {
   Crown,
 } from 'lucide-react'
 import { formatDateOnly } from '@/lib/utils'
+import { CountryDisplay } from '@/components/shared/country-display'
 
 // Status badge colors
 const statusColors: Record<string, 'default' | 'secondary' | 'destructive' | 'outline'> = {
@@ -143,7 +144,7 @@ export default function MentorProjectsPage() {
                     {project.country && (
                       <Badge variant="outline" className="gap-1">
                         <MapPin className="h-3 w-3" />
-                        {project.country}
+                        <CountryDisplay country={project.country} />
                       </Badge>
                     )}
                   </div>