Remove dynamic form builder and complete RoundProject→roundId migration

Major cleanup and schema migration:
- Remove unused dynamic form builder system (ApplicationForm, ApplicationFormField, etc.)
- Complete migration from RoundProject junction table to direct Project.roundId
- Add sortOrder and entryNotificationType fields to Round model
- Add country field to User model for mentor matching
- Enhance onboarding with profile photo and country selection steps
- Fix all TypeScript errors related to roundProjects references
- Remove unused libraries (@radix-ui/react-toast, embla-carousel-react, vaul)

Files removed:
- admin/forms/* pages and related components
- admin/onboarding/* pages
- applicationForm.ts and onboarding.ts routers
- Dynamic form builder Prisma models and enums

Schema changes:
- Removed ApplicationForm, ApplicationFormField, OnboardingStep, ApplicationFormSubmission, SubmissionFile models
- Removed FormFieldType and SpecialFieldType enums
- Added Round.sortOrder, Round.entryNotificationType
- Added User.country

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

prisma/check-data.ts

@@ -3,28 +3,28 @@ import { PrismaClient } from '@prisma/client'
 const prisma = new PrismaClient()
 
 async function check() {
-  const projects = await prisma.project.count()
-  console.log('Total projects:', projects)
+  const projectCount = await prisma.project.count()
+  console.log('Total projects:', projectCount)
 
   const rounds = await prisma.round.findMany({
     include: {
-      _count: { select: { roundProjects: true } }
+      _count: { select: { projects: true } }
     }
   })
 
   for (const r of rounds) {
     console.log(`Round: ${r.name} (id: ${r.id})`)
-    console.log(`  Projects: ${r._count.roundProjects}`)
+    console.log(`  Projects: ${r._count.projects}`)
   }
 
-  // Check if projects have programId set
+  // Check sample projects with their round
   const sampleProjects = await prisma.project.findMany({
-    select: { id: true, title: true, programId: true },
+    select: { id: true, title: true, roundId: true },
     take: 5
   })
   console.log('\nSample projects:')
   for (const p of sampleProjects) {
-    console.log(`  ${p.title}: programId=${p.programId}`)
+    console.log(`  ${p.title}: roundId=${p.roundId}`)
   }
 }