Fix plugin smoke example typecheck

packages/plugins/examples/plugin-authoring-smoke-example/package.json

@@ -5,12 +5,13 @@
   "private": true,
   "description": "A Paperclip plugin",
   "scripts": {
+    "prebuild": "node ../../../../scripts/ensure-plugin-build-deps.mjs",
     "build": "node ./esbuild.config.mjs",
     "build:rollup": "rollup -c",
     "dev": "node ./esbuild.config.mjs --watch",
     "dev:ui": "paperclip-plugin-dev-server --root . --ui-dir dist/ui --port 4177",
     "test": "vitest run --config ./vitest.config.ts",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "pnpm --filter @paperclipai/plugin-sdk build && tsc --noEmit"
   },
   "paperclipPlugin": {
     "manifest": "./dist/manifest.js",