No. Products can be in several category at same time, with category by default.
Second variant without coding. Add TEG to chosen products something like "brand-favorite-set". And use search link to show page with chosen goods...
Specialty for you newer version. And some tip. Use search before posting. Search it is the button on right top corner of page.
https://www.nulledfrm.com/threads/one-page-checkout-ps-easy-fast-intuitive-module-v-4-0-14.9774
Kind Regards.
I guesses what my module conflict with you particles code. Do you remove you implementations?
Because I had tested module on 6 different themes on real sites. All wok perfect.
Note. I write "do setting in app.js". If you release particle on your site - you able to setup right parameters for you...
repeat. Use search before posting. Search it is a button on right top corner of page :)
https://www.nulledfrm.com/threads/booking-services-reservation-and-customized-schedule.15710/
Have good day :)
layout-both-columns.tpl different for different theme. Use your layout-both-columns.tpl it is way to broke the site :)
U can yourself compare layout-both-columns.tpl in few theme.
Your solution works with issue.
I made module with right way with class override.
U can test by yourself.
https://mega.nz/file/wAoRwahB#GN1xY5Ri1HYtjXv4gyoPNBjrdxRQSM6oFqnLl_85lW0
one hour made module just for fun
idea from here. https://www.nulledfrm.com/threads/particles-animation-background-prestashop.25367/
all setup in app.js & front.css (I'm lazy to make module configuration)
module attached but free download here...