feat: 完善广场功能

prisma/schema.prisma

@@ -27,6 +27,12 @@ enum ImageArchiveStatus {
   FAILED
 }
 
+enum PlazaPostStatus {
+  PUBLIC
+  HIDDEN
+  REMOVED
+}
+
 model User {
   id               Int               @id
   username         String            @default("") @db.VarChar(191)
@@ -37,6 +43,7 @@ model User {
   createdAt        DateTime          @default(now()) @map("created_at")
   updatedAt        DateTime          @updatedAt @map("updated_at")
   imageGenerations ImageGeneration[]
+  plazaPosts       PlazaPost[]
 
   @@map("users")
 }
@@ -67,6 +74,7 @@ model ImageGeneration {
   updatedAt        DateTime              @updatedAt @map("updated_at")
   deletedAt        DateTime?             @map("deleted_at")
   user             User                  @relation(fields: [userId], references: [id], onDelete: Cascade)
+  plazaPost        PlazaPost?
 
   @@index([userId, createdAt])
   @@index([status])
@@ -76,6 +84,24 @@ model ImageGeneration {
   @@map("image_generations")
 }
 
+model PlazaPost {
+  id                BigInt          @id @default(autoincrement()) @db.UnsignedBigInt
+  imageGenerationId BigInt          @unique @map("image_generation_id") @db.UnsignedBigInt
+  userId            Int             @map("user_id")
+  status            PlazaPostStatus @default(PUBLIC)
+  publishedAt       DateTime        @default(now()) @map("published_at")
+  hiddenAt          DateTime?       @map("hidden_at")
+  removedAt         DateTime?       @map("removed_at")
+  createdAt         DateTime        @default(now()) @map("created_at")
+  updatedAt         DateTime        @updatedAt @map("updated_at")
+  imageGeneration   ImageGeneration @relation(fields: [imageGenerationId], references: [id], onDelete: Cascade)
+  user              User            @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@index([status, publishedAt])
+  @@index([userId, publishedAt])
+  @@map("plaza_posts")
+}
+
 model GenerationStats {
   id              String   @id @db.VarChar(32)
   totalRequests   Int      @default(0) @map("total_requests")