Support Linux refactoring checks

src/app/preferences.rs

@@ -1,4 +1,5 @@
 use super::*;
+use std::sync::RwLock;
 
 #[derive(Clone)]
 pub(super) struct PreferenceDraft {
@@ -437,6 +438,7 @@ impl App {
                 return;
             }
         }
+        #[cfg(target_os = "macos")]
         let dev_brain_changed = self.config.dev_brain != config.dev_brain;
         #[cfg(target_os = "macos")]
         let endpoint_changed = self.config.endpoint != config.endpoint;
@@ -447,6 +449,7 @@ impl App {
         {
             self._endpoint = None;
         }
+        #[cfg(target_os = "macos")]
         let pending_endpoint =
             if config.endpoint.enabled && (endpoint_changed || self._endpoint.is_none()) {
                 let Some(generation) = &self.generation_service else {