build: run sdk build in root build script

package.json

@@ -56,8 +56,7 @@
     "ws": "8.20.1"
   },
   "devDependencies": {
-    "c8": "^11.0.0",
-    "typescript": "^5.9.3"
+    "c8": "^11.0.0"
   },
   "optionalDependencies": {
     "fallow": "^2.70.0"
@@ -65,7 +64,7 @@
   "scripts": {
     "check:env": "bash scripts/check-env.sh",
     "check:integrity": "./scripts/check-npm-integrity.sh",
-    "build": "tsc -b",
+    "build": "npm run build:sdk",
     "build:hooks": "node scripts/build-hooks.js",
     "build:sdk": "cd sdk && npm ci && npm run build",
     "prepublishOnly": "npm run build:hooks && npm run build:sdk",