chore: 初始化项目骨架

package.json

@@ -0,0 +1,25 @@
+{
+  "name": "md-to-pdf",
+  "version": "0.1.0",
+  "private": true,
+  "description": "可配置、可主题化的 Markdown PDF 导出工具",
+  "workspaces": [
+    "apps/*",
+    "packages/*"
+  ],
+  "scripts": {
+    "build": "npm run build -w @md-to-pdf/core && npm run build -w @md-to-pdf/web && npm run build -w @md-to-pdf/server",
+    "dev": "npm run build -w @md-to-pdf/core && concurrently -k -n core,server,web \"npm:dev:core\" \"npm:dev:server\" \"npm:dev:web\"",
+    "dev:core": "npm run dev -w @md-to-pdf/core",
+    "dev:server": "npm run dev -w @md-to-pdf/server",
+    "dev:web": "npm run dev -w @md-to-pdf/web",
+    "typecheck": "npm run typecheck -w @md-to-pdf/core && npm run build -w @md-to-pdf/core && npm run typecheck -w @md-to-pdf/web && npm run typecheck -w @md-to-pdf/server"
+  },
+  "engines": {
+    "node": ">=22"
+  },
+  "devDependencies": {
+    "concurrently": "^9.2.1",
+    "typescript": "^5.9.3"
+  }
+}