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>

src/server/routers/export.ts

@@ -103,26 +103,21 @@ export const exportRouter = router({
   projectScores: adminProcedure
     .input(z.object({ roundId: z.string() }))
     .query(async ({ ctx, input }) => {
-      const roundProjectEntries = await ctx.prisma.roundProject.findMany({
+      const projects = await ctx.prisma.project.findMany({
         where: { roundId: input.roundId },
         include: {
-          project: {
+          assignments: {
             include: {
-              assignments: {
-                include: {
-                  evaluation: {
-                    where: { status: 'SUBMITTED' },
-                  },
-                },
+              evaluation: {
+                where: { status: 'SUBMITTED' },
               },
             },
           },
         },
-        orderBy: { project: { title: 'asc' } },
+        orderBy: { title: 'asc' },
       })
 
-      const data = roundProjectEntries.map((rp) => {
-        const p = rp.project
+      const data = projects.map((p) => {
         const evaluations = p.assignments
           .map((a) => a.evaluation)
           .filter((e) => e !== null)
@@ -138,7 +133,7 @@ export const exportRouter = router({
         return {
           title: p.title,
           teamName: p.teamName,
-          status: rp.status,
+          status: p.status,
           tags: p.tags.join(', '),
           totalEvaluations: evaluations.length,
           averageScore: