Initial commit: caddy static file server workspace

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

caddy/www/module-demo/main.js

@@ -0,0 +1,10 @@
+// 匯入指定函式與常數
+import { add, PI } from './math.js';
+
+// 匯入預設匯出
+import multiply from './math.js';
+
+console.log(add(2, 3));     // 5
+console.log(PI);            // 3.14159
+console.log(multiply(4, 5));// 20
+