feat(catalog): generate derived scale 32 with preview and backup restore

src/app/admin/import/furni/nitro-editor-dialog.tsx

@@ -19,6 +19,7 @@ import {
 import { useCallback, useEffect, useState } from "react";
 import { toast } from "sonner";
 import { NitroQualityPanel } from "@/components/admin/studio/nitro-quality-panel";
+import { NitroScale32Generator } from "@/components/admin/studio/nitro-scale32-generator";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import {
@@ -140,6 +141,7 @@ export function NitroEditorDialog({
 	const [jsonText, setJsonText] = useState("");
 	const [loading, setLoading] = useState(false);
 	const [saving, setSaving] = useState(false);
+	const [bundleRevision, setBundleRevision] = useState(0);
 	const [activeTab, setActiveTab] = useState<string>("visual");
 	const [flags, setFlags] = useState({
 		canstandon: false,
@@ -443,7 +445,19 @@ export function NitroEditorDialog({
 							value="quality"
 							className="min-h-0 overflow-y-auto flex-1 px-4 sm:px-6 py-4"
 						>
-							<NitroQualityPanel classname={classname} />
+							<NitroScale32Generator
+								classname={classname}
+								disabled={hasChanges || saving}
+								onChanged={(updated) => {
+									setBundleRevision((value) => value + 1);
+									setMetadata(updated as NitroMetadata);
+									setOriginalMetadata(
+										structuredClone(updated) as NitroMetadata,
+									);
+									setJsonText(JSON.stringify(updated, null, 2));
+								}}
+							/>
+							<NitroQualityPanel key={bundleRevision} classname={classname} />
 						</TabsContent>
 						{/* ── Visual Tab ── */}
 						<TabsContent

src/app/api/admin/import/furni/nitro-editor/route.ts

@@ -105,15 +105,23 @@ export const PUT = withAdmin(
 		if (!existsSync(/*turbopackIgnore: true*/ nitroPath))
 			return apiError("Nitro file not found", 404);
 
-		// 1. Read existing .nitro to extract PNG
-		const existingBuffer = await fs.readFile(
-			/*turbopackIgnore: true*/ nitroPath,
-		);
-		const { png } = parseNitroBundle(existingBuffer);
-
-		// 2. Rebuild .nitro with updated JSON + same PNG
-		const newBundle = createNitroBundle(metadata, png, base);
-		await fs.writeFile(nitroPath, newBundle);
+		const saved = await withFurniDataLock(async () => {
+			const existingBuffer = await fs.readFile(nitroPath);
+			const { png, json: currentMetadata } = parseNitroBundle(existingBuffer);
+			if (
+				JSON.stringify(currentMetadata.catalogStudio) !==
+				JSON.stringify(metadata.catalogStudio)
+			)
+				return false;
+			const newBundle = createNitroBundle(metadata, png, base);
+			await fs.writeFile(nitroPath, newBundle);
+			return true;
+		});
+		if (!saved)
+			return apiError(
+				"The bundle changed. Reopen the editor before saving.",
+				409,
+			);
 
 		// 3. Extract dimensions from metadata
 		const dims = metadata.logic?.model?.dimensions || { x: 1, y: 1, z: 0 };

src/components/admin/studio/nitro-quality-panel.tsx

@@ -23,7 +23,9 @@ function ScalePanel({
 					? "Not included"
 					: report.state === "issues"
 						? "Needs review"
-						: "Present"}
+						: report.derived
+							? "Derived from 64"
+							: "Present"}
 			</h3>
 			<p className="text-xs text-muted-foreground">
 				{report.assets.length} sprites · {report.animations.length} animation

src/lib/furni/nitro-quality.ts

@@ -4,6 +4,7 @@ export interface ScaleIssue {
 }
 export interface ScaleReport {
 	size: 32 | 64;
+	derived?: boolean;
 	state: "missing" | "issues" | "present";
 	assets: string[];
 	animations: string[];
@@ -178,6 +179,9 @@ export function inspectNitroScales(
 			].sort();
 			return {
 				size,
+				derived:
+					size === 32 &&
+					object(object(metadata.catalogStudio).scale32).derivedFrom === 64,
 				state: issues.length ? "issues" : names.length ? "present" : "missing",
 				assets: names,
 				animations,