Make Gimbap cutter

Haskell, 32 bytes

f(')':s)=f s
f s=do ')'<-s;"@) "

Try it online!

Recursion beats using span for removing the initial ('s.

Haskell, 33 bytes

f s=do ')'<-snd$span(<'@')s;"@) "

Try it online!

JavaScript, 42 41 bytes

s=>s.split(/(?<[email protected]*)\)/).fill``.join`@) `

Try It Online!

Canvas, 10 9 bytes

@ｓｊ∑Ｌ@) ×

Try it here!