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/program.ts

@@ -20,14 +20,14 @@ export const programRouter = router({
           _count: {
             select: { rounds: true },
           },
-          rounds: input?.includeRounds ? {
-            orderBy: { sortOrder: 'asc' },
+          rounds: {
+            orderBy: { createdAt: 'asc' },
             include: {
               _count: {
-                select: { roundProjects: true, assignments: true },
+                select: { projects: true, assignments: true },
               },
             },
-          } : false,
+          },
         },
       })
     }),
@@ -45,7 +45,7 @@ export const programRouter = router({
             orderBy: { createdAt: 'asc' },
             include: {
               _count: {
-                select: { roundProjects: true, assignments: true },
+                select: { projects: true, assignments: true },
               },
             },
           },