初始化專案：租屋契約 PDF 產生器

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,16 @@
+{
+  "name": "rental-contract-pdf",
+  "version": "1.0.0",
+  "description": "用 Node.js 產生租屋契約 PDF",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node --watch server.js"
+  },
+  "dependencies": {
+    "express": "^4.21.2"
+  },
+  "engines": {
+    "node": ">=20"
+  }
+}