LocalSheets, a single-file spreadsheet with a local-only AI panel

LocalSheets is a single-file, browser-based spreadsheet that integrates a local-only AI panel, designed for privacy-conscious users who want AI assistance without data leaving their machine. It targets productivity enthusiasts and professionals needing quick data analysis, formula generation, or text manipulation within a lightweight, offline-capable tool. Its interest lies in combining the simplicity of a standalone spreadsheet with the power of on-device AI, eliminating cloud dependencies and subscription costs.