Use whatever makes you happy for front end.
Rails is not magical or vastly better than anything else in any way.
Especially not since AI and Claude.
Any mainstream technology is a great choice for building most things. Python node TypeScript Ruby, Golang C#.
Since you already know Golang you’d be nuts to use anything else unless you’re just wanting fun and learning in which case do whatever you like.
My only very strong recommendation….. use plain old SQL. It’s a superb choice.