internal/app: copy parts of config to state

This is less error-prone than passing the address to the entire hst.Config struct, and reduces the likelihood of accidentally clobbering hst.Config. This also improves ease of testing.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/app/spx11.go

@@ -25,7 +25,7 @@ type spX11Op struct {
 }
 
 func (s *spX11Op) toSystem(state *outcomeStateSys) error {
-	if state.config.Enablements.Unwrap()&hst.EX11 == 0 {
+	if state.et&hst.EX11 == 0 {
 		return errNotEnabled
 	}