feat: read-only external attendees strip on applicant dashboard

Adds lunch.getProjectExternals (team-member guarded). Strip auto-hides
when no externals attached to the team.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/(applicant)/applicant/page.tsx

@@ -20,6 +20,7 @@ import { MentoringRequestCard } from '@/components/applicant/mentoring-request-c
 import { MentorConversationCard } from '@/components/applicant/mentor-conversation-card'
 import { AttendingMembersCard } from '@/components/applicant/attending-members-card'
 import { LunchBanner } from '@/components/applicant/lunch-banner'
+import { ExternalAttendeesStrip } from '@/components/applicant/external-attendees-strip'
 import { AnimatedCard } from '@/components/shared/animated-container'
 import { ProjectLogoUpload } from '@/components/shared/project-logo-upload'
 import { Progress } from '@/components/ui/progress'
@@ -407,6 +408,9 @@ export default function ApplicantDashboardPage() {
           {/* Lunch banner (auto-hides when lunch event disabled or unconfigured) */}
           <LunchBanner programId={project.programId} />
 
+          {/* External lunch attendees attached to this team (auto-hides if none) */}
+          <ExternalAttendeesStrip projectId={project.id} />
+
           {/* Grand finale attendee roster (auto-hides until confirmation status is CONFIRMED) */}
           <AttendingMembersCard />