[Build] docs: Add critical instructions for clearing Vercel cache

## GitHub Update **Repository:** [MKWcorp/hrisnextgen](https://github.com/MKWcorp/hrisnextgen) **Author:** multimediadrw **Date:** 10/26/2025, 6:36:49 AM **Commit:** [`be03d74`](https://github.com/MKWcorp/hrisnextgen/commit/be03d7483a84223efe6db88f9cfdcacce1b4e791) ### Commit Message docs: Add critical instructions for clearing Vercel cache --- _This story was imported from historical commits._