fix(design): connect video preparation and playable history

electron/api/routes/image-workspace.ts

@@ -94,6 +94,15 @@ function decodeUserInput(value: unknown): DesignUserInput {
     }
     return { kind: 'direct_edit', operations: input.operations.map(decodeFieldOperation) };
   }
+  if (input.kind === 'prepare_generation') {
+    if (input.operations !== undefined && !Array.isArray(input.operations)) {
+      invalidCommand('制作方案整理的字段操作无效');
+    }
+    return {
+      kind: 'prepare_generation',
+      operations: input.operations?.map(decodeFieldOperation) ?? [],
+    };
+  }
   if (input.kind === 'chat') {
     return { kind: 'chat', message: requiredString(input.message, '消息') };
   }