Add male toddler character model in GLB format

frontend/scripts/optimize-glb.mjs

@@ -13,18 +13,42 @@ import { fileURLToPath } from 'url';
 import path from 'path';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const charsDir = path.join(__dirname, '..', 'public', 'models', '3d', 'falukant', 'characters');
+const sourceDir = path.join(__dirname, '..', 'models-src', '3d', 'falukant', 'characters');
+const outputDir = path.join(__dirname, '..', 'public', 'models', '3d', 'falukant', 'characters');
 const cli = path.join(__dirname, '..', 'node_modules', '.bin', 'gltf-transform');
 
 function listSourceModels() {
-  return fs.readdirSync(charsDir)
+  return fs.readdirSync(sourceDir)
     .filter((file) => file.endsWith('.glb'))
     .filter((file) => !file.endsWith('_opt.glb'))
     .sort((a, b) => a.localeCompare(b));
 }
 
+function ensureOutputDir() {
+  fs.mkdirSync(outputDir, { recursive: true });
+}
+
+function removeStaleOptimizedModels() {
+  if (!fs.existsSync(outputDir)) {
+    return;
+  }
+  for (const file of fs.readdirSync(outputDir)) {
+    if (file.endsWith('_opt.glb')) {
+      fs.unlinkSync(path.join(outputDir, file));
+    }
+  }
+}
+
 console.log('Optimize Falukant character GLBs (Draco + texture 1024)\n');
 
+if (!fs.existsSync(sourceDir)) {
+  console.error(`Source directory not found: ${sourceDir}`);
+  process.exit(1);
+}
+
+ensureOutputDir();
+removeStaleOptimizedModels();
+
 const models = listSourceModels();
 if (models.length === 0) {
   console.log('No source GLBs found.');
@@ -32,9 +56,9 @@ if (models.length === 0) {
 }
 
 for (const f of models) {
-  const input = path.join(charsDir, f);
+  const input = path.join(sourceDir, f);
   const out = f.replace(/\.glb$/, '_opt.glb');
-  const output = path.join(charsDir, out);
+  const output = path.join(outputDir, out);
 
   try {
     const result = spawnSync(
@@ -54,4 +78,4 @@ for (const f of models) {
   }
 }
 
-console.log('\nDone. Use *_opt.glb in Character3D (with DRACOLoader).');
+console.log(`\nDone. Optimized models written to ${outputDir}`);