Family member of EU citizen. Need some clarification.

Hi.I'm thinking of moving to Sweden as an EU citizen along with my non EU/EEA wife. I'm a sole trader registered in another EU country with a stable income which is pretty reasonable for Sweden. As I work remotely, I do not need to look for a job after a relocation.I've found this article at the Swedish ministry of immigration website about family reunification of EU citizens. However, there are some unclean moments which I would like to clarify. It would be nice if anyone could explain it to me.The first issue is that I see that you can bring your spouse to Sweden if you live in Sweden but employed in another country (See "If you work, study or are self-employed in another country” section in the article). However, I see that the required documents include "receipts of costs related to commuting across Swedish borders, for example in the form of a monthly ticket or similar." It seems strange because in in our times people often do not need to commute to work because they work remotely. For example, I haven't been in our office for a year and a half. Do you know how to solve this issue with documents?Another issue that I see that a person who can qualify for family reunification in Sweden can start to work immediately:If you fulfil the requirements for right of residence, your closest family members have the right to start working or studying immediately after coming to Sweden. They do not need to wait until they have applied for or been given a residence card before starting to work or study.I'm curious how a potential employer of my wife can understand that she qualifies for it? What documents are required to employ in such case?Another question is a visa (initially needed for my wife to come to Sweden) before submitting the application. Should it be a Swedish visa or any Schengen is ok?The last question is rather different and not related to my wife, but me. As far as I understand, if I come to Sweden, then for half a year I can work as a sole trader registered in another EU country and pay taxes there (which are pretty low). If I live in Sweden for more than half a year, I become a taxation resident there and have to pay local taxes. What is the most rational way to keep the same job while living in Sweden permanently? Or should I find a local employer?I appreciate any help.