Trash ID Update Collections

backend/prisma/migrations/20251122032308_add_preview/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Drawing" ADD COLUMN "preview" TEXT;

backend/prisma/migrations/migration_lock.toml

@@ -1,3 +1,3 @@
 # Please do not edit this file manually
-# It should be added in your version-control system (e.g., Git)
-provider = "sqlite"
+# It should be added in your version-control system (i.e. Git)
+provider = "sqlite"

backend/prisma/schema.prisma

@@ -24,6 +24,7 @@ model Drawing {
   name         String
   elements     String // Stored as JSON string
   appState     String // Stored as JSON string
+  preview      String? // SVG string for thumbnail
   version      Int         @default(1)
   collectionId String?
   collection   Collection? @relation(fields: [collectionId], references: [id])