chore: ensure build output for Git installs (prepare script)

Author: ANGiS-X

package.json

@@ -25,6 +25,7 @@
   },
   "scripts": {
     "build": "tsc",
+    "prepare": "npm run build",
     "compile": "tsc",
     "test": "vitest run",
     "test:ci": "vitest run --coverage",