[Build] refactor: change export to TSV format for better Excel compatibility - Remove xlsx library dependency - Use Tab-Separated Values (TSV) which Excel opens correctly - File extension .xls for automatic Excel association

## GitHub Update **Repository:** [MKWcorp/drwprime](https://github.com/MKWcorp/drwprime) **Author:** MKWcorp **Date:** 2/7/2026, 12:27:54 PM **Commit:** [`0189b37`](https://github.com/MKWcorp/drwprime/commit/0189b373fc82cec09155829f9722291a99ad4ea4) ### Commit Message refactor: change export to TSV format for better Excel compatibility - Remove xlsx library dependency - Use Tab-Separated Values (TSV) which Excel opens correctly - File extension .xls for automatic Excel association --- _This story was imported from historical commits._