pnpm install --prod creates workspace symlinks (node_modules/@groombook/db
→ packages/db/), but dist/ files didn't exist yet, causing Node.js to fall
back to resolving .ts source files at runtime (ERR_UNKNOWN_FILE_EXTENSION).
Copy compiled dist files and updated package.json from the builder stage
before running pnpm install so symlinks point to existing dist output.
Co-Authored-By: Paperclip <noreply@paperclip.ing>