run SF from steam directly

write down/suggest/automate setting SF as replacement for default steam executable. steam launch actually support changing .exe name to be launched:

<img width="858" height="131" alt="Image" src="https://github.com/user-attachments/assets/3761bef2-e4c3-4654-8586-3f8242c8722a" />

discussion: https://discord.com/channels/416631942738346008/424009433253806080/1396699700677181601