Add RSVP events and Unsplash image support

prisma/schema.prisma

@@ -63,6 +63,11 @@ enum TerminStatus {
   CANCELLED
 }
 
+enum EventParticipationStatus {
+  ATTENDING
+  NOT_ATTENDING
+}
+
 enum NotdienstPlanStatus {
   DRAFT
   PUBLISHED
@@ -121,6 +126,7 @@ model Kita {
   invitations             Invitation[]
   termine                 Termin[]
   mitbringselItems        MitbringselItem[]
+  eventParticipations     EventParticipation[]
   notdienstPlans          NotdienstPlan[]
   notdienstAvailabilities NotdienstAvailability[]
   notdienstAssignments    NotdienstAssignment[]
@@ -248,6 +254,7 @@ model Child {
   notdienstAvailabilities NotdienstAvailability[]
   notdienstAssignments    NotdienstAssignment[]
   absences                Absence[]
+  eventParticipations     EventParticipation[]
 
   @@index([kitaId])
   @@index([familyId])
@@ -490,6 +497,11 @@ model Termin {
   /// Mitbringliste pro Termin aktivierbar (Modul 2, "Flexible Mitbring-Listen")
   mitbringselListEnabled Boolean @default(false)
 
+  /// Teilnahme-Abfrage für Ausflüge und besondere Events.
+  requiresRsvp    Boolean   @default(false)
+  rsvpDeadline    DateTime?
+  participantInfo String?
+
   createdById String?
   createdBy   User?   @relation("TerminCreator", fields: [createdById], references: [id], onDelete: SetNull)
 
@@ -502,12 +514,35 @@ model Termin {
   updatedAt DateTime @updatedAt
 
   mitbringselItems MitbringselItem[]
+  participations   EventParticipation[]
 
   @@index([kitaId, startDate])
   @@index([kitaId, status])
   @@map("termine")
 }
 
+model EventParticipation {
+  id     String @id @default(cuid())
+  kitaId String
+  kita   Kita   @relation(fields: [kitaId], references: [id], onDelete: Cascade)
+
+  eventId String
+  event   Termin @relation(fields: [eventId], references: [id], onDelete: Cascade)
+
+  childId String
+  child   Child  @relation(fields: [childId], references: [id], onDelete: Cascade)
+
+  status EventParticipationStatus
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@unique([eventId, childId])
+  @@index([kitaId])
+  @@index([childId])
+  @@map("event_participations")
+}
+
 model MitbringselItem {
   id     String @id @default(cuid())
   kitaId String