feat: add GLTF transformation and compression support

- Updated package.json to include @gltf-transform/core, @gltf-transform/extensions, @gltf-transform/functions, and draco3dgltf for GLB file processing.
- Implemented GLB compression using Draco in the upload model API route.
- Adjusted camera keyframes in ScrollScene for improved animation.
- Enhanced overlay styles in ScrollOverlays for better visual clarity.
- Added original GLB files for Kandoura, Suit, Unitree_G1, and Vest.
- Updated existing GLB files for Kandoura, Suit, Unitree_G1, and Vest.

package.json

@@ -11,6 +11,9 @@
     "test:watch": "vitest"
   },
   "dependencies": {
+    "@gltf-transform/core": "^4.3.0",
+    "@gltf-transform/extensions": "^4.3.0",
+    "@gltf-transform/functions": "^4.3.0",
     "@libsql/client": "^0.17.2",
     "@prisma/adapter-libsql": "^7.7.0",
     "@prisma/client": "^7.7.0",
@@ -22,6 +25,7 @@
     "@stripe/stripe-js": "^9.1.0",
     "@types/three": "^0.183.1",
     "bcryptjs": "^3.0.3",
+    "draco3dgltf": "^1.5.7",
     "framer-motion": "^12.38.0",
     "gsap": "^3.14.2",
     "i18next": "^26.0.3",
@@ -37,6 +41,7 @@
     "zustand": "^5.0.12"
   },
   "devDependencies": {
+    "@gltf-transform/cli": "^4.3.0",
     "@tailwindcss/postcss": "^4.2.2",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",

src/app/api/admin/upload-model/route.ts

@@ -1,8 +1,22 @@
 import { NextResponse } from 'next/server';
 import { cookies } from 'next/headers';
 import { jwtVerify } from 'jose';
-import { writeFile, mkdir } from 'fs/promises';
+import { writeFile, mkdir, readFile } from 'fs/promises';
 import path from 'path';
+import { Document, NodeIO } from '@gltf-transform/core';
+import { ALL_EXTENSIONS } from '@gltf-transform/extensions';
+import { draco, dedup, prune, weld, simplify } from '@gltf-transform/functions';
+import draco3d from 'draco3dgltf';
+
+async function compressGLB(inputPath: string): Promise<void> {
+  const io = new NodeIO()
+    .registerExtensions(ALL_EXTENSIONS)
+    .registerDependencies({ 'draco3d.decoder': await draco3d.createDecoderModule(), 'draco3d.encoder': await draco3d.createEncoderModule() });
+
+  const document = await io.read(inputPath);
+  await document.transform(dedup(), prune(), weld(), draco());
+  await io.write(inputPath, document);
+}
 
 export async function POST(request: Request) {
   // Verify admin JWT
@@ -51,6 +65,13 @@ export async function POST(request: Request) {
   const buffer = Buffer.from(await file.arrayBuffer());
   await writeFile(destPath, buffer);
 
+  // Compress the uploaded GLB with Draco to reduce file size
+  try {
+    await compressGLB(destPath);
+  } catch (err) {
+    console.warn('GLB compression failed, serving uncompressed:', err);
+  }
+
   // Append a version timestamp so useGLTF cache is busted on replacement uploads
   const version = Date.now();
   return NextResponse.json({ modelPath: `/models/${safeId}.glb?v=${version}` });

src/components/ScrollOverlays.tsx

@@ -74,9 +74,9 @@ function OverlaySection({
   const panelStyle: React.CSSProperties = isCenter
     ? { textAlign: 'center' }
     : {
-        background: 'rgba(255, 255, 255, 0.45)',
+        background: 'rgba(255, 255, 255, 0.92)',
-        backdropFilter: 'blur(16px)',
+        backdropFilter: 'blur(20px)',
-        WebkitBackdropFilter: 'blur(16px)',
+        WebkitBackdropFilter: 'blur(20px)',
         padding: '2.5rem',
         borderRadius: '1.5rem',
         boxShadow: '0 8px 32px rgba(0, 0, 0, 0.08)',

src/components/ScrollScene.tsx

@@ -13,8 +13,8 @@ const CAMERA_KEYFRAMES: [number, [number, number, number]][] = [
   [0.40, [0.3, 1.5, 2.0]],       // HEAD+CHEST: tight, high angle looking down
   [0.55, [1.2, 2.2, 2.2]],       // ABOVE: bird's eye with slight right offset
   [0.68, [1.6, 0.7, 2.5]],      // Dramatic right side sweep
-  [0.80, [0.3, 0.3, 2.2]],      // Circle to front-low
+  [0.80, [-1.8, 0.3, 3.0]],     // Circle to front-left, pulled back to avoid text overlap
-  [0.92, [0, -0.3, 2.5]],       // LOW ANGLE: heroic looking up
+  [0.92, [-1.5, -0.1, 3.2]],    // LOW ANGLE: heroic, offset left for right-side text
   [1.0,  [0, 1.2, 5.5]],        // Final: pull back for configurator
 ];