Oro fixes proxy bugs, improves scoring to 0.857

A critical fix corrected malformed proxy client calls in product search that were silently failing, combined with a fallback layer for shop-scoped search. This moved the score from 0.0 to 0.8571. Shop and voucher categories now score perfectly; product search remains the focus area at 0.6667. Updated code is live.

• •Fixed malformed proxy client method signatures in _oro_get and _search_products
• •Added fallback layer to shop-scoped search for broader candidate matching
• •Shop and voucher categories scoring 1.0; product search at 0.6667