refactor: silence swiftui logs when debugging

Author: lwouis

config/debug.xcconfig

@@ -7,6 +7,7 @@ SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG // for macro `#if DEBUG`
 OTHER_SWIFT_FLAGS = -driver-time-compilation -Xfrontend -warn-long-function-bodies=250 -Xfrontend -warn-long-expression-type-checking=250 // find slow compilation areas
 OTHER_CODE_SIGN_FLAGS = --timestamp=none
 SWIFT_COMPILATION_MODE = incremental
+ENABLE_DEBUG_DYLIB = NO // skip the debug dylib loader (we don't use SwiftUI Previews); silences [PreviewsAgentExecutorLibrary] startup chatter
 
 // Per-developer overrides (CODE_SIGN_IDENTITY, APPCENTER_SECRET, DOMAIN, API_DOMAIN, …).
 #include? "local.xcconfig"