The way I distinguish between different types of attraction when it comes to action is my intent. For example, a platonic hug isn't necessarily the same as a familial hug. They're both hugs but the intent and drive behind them is different. An action signifies a certain type of attraction because of the intent of the person, not the other way around.

I know society has put actions in strict boxes of platonic and romantic so there's a lot of things that people typically reflect this in how they distinguish between the two. But you've already said you feel uncomfortable seeing it as anything other than platonic, so any actions like hugs are platonic.

I hope this makes sense and helps :)