feat: electron desktop packaging, CDN asset migration, production docs, scene JSON spec

scripts/pack-html.mjs

@@ -0,0 +1,36 @@
+// Web 打包脚本：vite build → 验证 JSON → zip → release/mygame.zip
+import { execSync } from 'child_process'
+import { existsSync, readFileSync, mkdirSync, rmSync } from 'fs'
+import { join, dirname } from 'path'
+import { fileURLToPath } from 'url'
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+const root = join(__dirname, '..')
+const dist = join(root, 'dist')
+const release = join(root, 'release')
+const jsonPath = join(dist, 'scenes', 'my_story.json')
+
+console.log('🔨 Building...')
+execSync('npx vite build', { cwd: root, stdio: 'inherit' })
+
+if (existsSync(jsonPath)) {
+  try {
+    JSON.parse(readFileSync(jsonPath, 'utf-8'))
+    console.log('✅ JSON 格式验证通过')
+  } catch (err) {
+    console.error('❌ JSON 解析失败:', err.message)
+    process.exit(1)
+  }
+} else {
+  console.log('⚠️  未找到 my_story.json，跳过验证')
+}
+
+rmSync(release, { recursive: true, force: true })
+mkdirSync(release, { recursive: true })
+
+const zipName = 'mygame'
+console.log('📦 打包中...')
+execSync(`zip -r ${join(release, zipName)}.zip .`, { cwd: dist, stdio: 'inherit' })
+
+console.log(`\n✅ 打包完成 → ${join(release, zipName)}.zip`)
+console.log('📤 将此 zip 上传到 itch.io → 选择 "HTML" 类型 → 发布')