Refactor event date handling: Update event model to use DateTime type for date fields in Prisma schema. Modify API routes and UI components to ensure consistent date formatting and handling, improving data integrity and user experience across event management and display.

prisma/schema.prisma

@@ -85,7 +85,7 @@ model UserPreferences {
 
 model Event {
   id          String      @id @default(cuid())
-  date        String
+  date        DateTime
   name        String
   description String
   type        EventType