fix: align prepare script with build to prevent hardcoded absolute paths (#263)

package.json

@@ -37,7 +37,7 @@
   ],
   "scripts": {
     "build": "bun build src/index.ts --outdir dist --target bun --format esm --packages external && bun build src/cli/index.ts --outdir dist/cli --target bun --format esm --packages external && tsc --emitDeclarationOnly && bun run generate-schema",
-    "prepare": "bun build src/index.ts --outdir dist --target bun --format esm --external @ast-grep/napi --external @opencode-ai/plugin --external @opencode-ai/sdk",
+    "prepare": "bun build src/index.ts --outdir dist --target bun --format esm --packages external --external @ast-grep/napi --external @opencode-ai/plugin --external @opencode-ai/sdk",
     "contributors:add": "all-contributors add",
     "contributors:check": "all-contributors check",
     "contributors:generate": "all-contributors generate",