UNIPOS — Shop Name Login URL Fix

Upload login.php and .htaccess to public_html/pos_reports/ (back up the originals first).
Do not modify accounts.json, config.php, private/, or LIVE_POS.PRG.

Example: https://unicomlb.com/pos_reports/shoppy/shop_login.php

The name in the URL is derived from the shop name: lower case, with spaces/punctuation converted to hyphens.
Names that normalize to the same URL are rejected as ambiguous.
Old internal shop-ID login URLs remain supported.
The shop name must be unique and use Latin letters/numbers for this URL format.

If you rename a shop, its login URL will change. For permanent links, a future version should store an independent URL slug in accounts.json.

This ZIP changes only login.php and .htaccess. It has not been tested on the live hosting environment.
