Add notification bell system and MOPC onboarding form

Notification System:
- Add InAppNotification and NotificationEmailSetting database models
- Create notification service with 60+ notification types for all user roles
- Add notification router with CRUD endpoints
- Build NotificationBell UI component with dropdown and unread count
- Integrate bell into admin, jury, mentor, and observer navs
- Add notification email settings admin UI in Settings > Notifications
- Add notification triggers to filtering router (complete/failed)
- Add sendNotificationEmail function to email library
- Add formatRelativeTime utility function

MOPC Onboarding Form:
- Create /apply landing page with auto-redirect for single form
- Create seed script for MOPC 2026 application form (6 steps)
- Create seed script for default notification email settings

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

prisma/migrations/20260203220000_add_in_app_notifications/migration.sql

@@ -0,0 +1,58 @@
+-- CreateTable
+CREATE TABLE "InAppNotification" (
+    "id" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+    "priority" TEXT NOT NULL DEFAULT 'normal',
+    "icon" TEXT,
+    "title" TEXT NOT NULL,
+    "message" TEXT NOT NULL,
+    "linkUrl" TEXT,
+    "linkLabel" TEXT,
+    "metadata" JSONB,
+    "groupKey" TEXT,
+    "isRead" BOOLEAN NOT NULL DEFAULT false,
+    "readAt" TIMESTAMP(3),
+    "expiresAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "InAppNotification_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "NotificationEmailSetting" (
+    "id" TEXT NOT NULL,
+    "notificationType" TEXT NOT NULL,
+    "category" TEXT NOT NULL,
+    "label" TEXT NOT NULL,
+    "description" TEXT,
+    "sendEmail" BOOLEAN NOT NULL DEFAULT true,
+    "emailSubject" TEXT,
+    "emailTemplate" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "updatedById" TEXT,
+
+    CONSTRAINT "NotificationEmailSetting_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "InAppNotification_userId_isRead_idx" ON "InAppNotification"("userId", "isRead");
+
+-- CreateIndex
+CREATE INDEX "InAppNotification_userId_createdAt_idx" ON "InAppNotification"("userId", "createdAt");
+
+-- CreateIndex
+CREATE INDEX "InAppNotification_groupKey_idx" ON "InAppNotification"("groupKey");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "NotificationEmailSetting_notificationType_key" ON "NotificationEmailSetting"("notificationType");
+
+-- CreateIndex
+CREATE INDEX "NotificationEmailSetting_category_idx" ON "NotificationEmailSetting"("category");
+
+-- AddForeignKey
+ALTER TABLE "InAppNotification" ADD CONSTRAINT "InAppNotification_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "NotificationEmailSetting" ADD CONSTRAINT "NotificationEmailSetting_updatedById_fkey" FOREIGN KEY ("updatedById") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;