Add dynamic apply wizard customization with admin settings UI

- Create wizard config types, utilities, and defaults (wizard-config.ts)
- Add admin apply settings page with drag-and-drop step ordering, dropdown
  option management, feature toggles, welcome message customization, and
  custom field builder with select/multiselect options editor
- Build dynamic apply wizard component with animated step transitions,
  mobile-first responsive design, and config-driven form validation
- Update step components to accept dynamic config (categories, ocean issues,
  field visibility, feature flags)
- Replace hardcoded enum validation with string-based validation for
  admin-configurable dropdown values, with safe enum casting at storage layer
- Add wizard template system (model, router, admin UI) with built-in
  MOPC Classic preset
- Add program wizard config CRUD procedures to program router
- Update application router getConfig to return wizardConfig, submit handler
  to store custom field data in metadataJson
- Add edition-based apply page, project pool page, and supporting routers
- Fix CSS (invalid sm:fixed-none), Enter key handler (skip textarea),
  safe area insets for notched phones, buildStepsArray field visibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(public)/apply/edition/[programSlug]/page.tsx

@@ -0,0 +1,65 @@
+'use client'
+
+import { useParams, useRouter } from 'next/navigation'
+import { trpc } from '@/lib/trpc/client'
+import { ApplyWizardDynamic } from '@/components/forms/apply-wizard-dynamic'
+import { Loader2, AlertCircle } from 'lucide-react'
+import { Button } from '@/components/ui/button'
+import { DEFAULT_WIZARD_CONFIG } from '@/types/wizard-config'
+import { toast } from 'sonner'
+
+export default function EditionApplyPage() {
+  const params = useParams()
+  const router = useRouter()
+  const programSlug = params.programSlug as string
+
+  const { data: config, isLoading, error } = trpc.application.getConfig.useQuery(
+    { slug: programSlug, mode: 'edition' },
+    { retry: false }
+  )
+
+  const submitMutation = trpc.application.submit.useMutation({
+    onError: (error) => toast.error(error.message),
+  })
+
+  if (isLoading) {
+    return (
+      <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-background to-muted/30">
+        <Loader2 className="h-8 w-8 animate-spin text-primary" />
+      </div>
+    )
+  }
+
+  if (error || !config || config.mode !== 'edition') {
+    return (
+      <div className="min-h-screen flex items-center justify-center p-4 bg-gradient-to-br from-background to-muted/30">
+        <div className="text-center">
+          <AlertCircle className="mx-auto h-16 w-16 text-destructive mb-4" />
+          <h1 className="text-2xl font-bold mb-2">Application Not Available</h1>
+          <p className="text-muted-foreground mb-6">{error?.message ?? 'Not found'}</p>
+          <Button variant="outline" onClick={() => router.push('/')}>Return Home</Button>
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <ApplyWizardDynamic
+      mode="edition"
+      config={config.wizardConfig ?? DEFAULT_WIZARD_CONFIG}
+      programName={config.program.name}
+      programYear={config.program.year}
+      programId={config.program.id}
+      isOpen={config.program.isOpen}
+      submissionDeadline={config.program.submissionEndDate}
+      onSubmit={async (data) => {
+        await submitMutation.mutateAsync({
+          mode: 'edition',
+          programId: config.program.id,
+          data: data as any,
+        })
+      }}
+      isSubmitting={submitMutation.isPending}
+    />
+  )
+}