dmx-loader v5: purge ALL Malloca from D after DMX load (not just filter during load)

fix: loại bỏ sản phẩm Malloca từ nguồn DMX + cải thiện loader

Load both DMX + Garis products, update stats after each source

Fix: strip utm params from DMX URLs, ensure OG image for share

Add DMX products loader script (6273 products from dienmayxanh.com)