Add pre-commit hooks (husky + lint-staged + prettier)

package.json

@@ -29,7 +29,8 @@
     "test": "node --test",
     "sync": "node scripts/sync-upstream.ts",
     "generate": "node scripts/generate.ts",
-    "smoke": "node scripts/smoke.ts"
+    "smoke": "node scripts/smoke.ts",
+    "prepare": "husky"
   },
   "repository": {
     "type": "git",
@@ -41,6 +42,8 @@
   },
   "devDependencies": {
     "@types/node": "^26.6.4",
+    "husky": "^9.1.7",
+    "lint-staged": "^17.6.0",
     "prettier": "^3.9.9",
     "typescript": "^7.0.2"
   }