refactor: simplify function return types and remove unnecessary wraps

src-tauri/src/core/manager/lifecycle.rs

@@ -27,7 +27,10 @@ impl CoreManager {
 
         match *self.get_running_mode() {
             RunningMode::Service => self.stop_core_by_service().await,
-            RunningMode::Sidecar => self.stop_core_by_sidecar(),
+            RunningMode::Sidecar => {
+                self.stop_core_by_sidecar();
+                Ok(())
+            }
             RunningMode::NotRunning => Ok(()),
         }
     }

src-tauri/src/core/manager/state.rs

@@ -96,7 +96,7 @@ impl CoreManager {
         Ok(())
     }
 
-    pub(super) fn stop_core_by_sidecar(&self) -> Result<()> {
+    pub(super) fn stop_core_by_sidecar(&self) {
         logging!(info, Type::Core, "Stopping sidecar");
         defer! {
             self.set_running_mode(RunningMode::NotRunning);
@@ -106,7 +106,6 @@ impl CoreManager {
             drop(child);
             logging!(trace, Type::Core, "Sidecar stopped (PID: {:?})", pid);
         }
-        Ok(())
     }
 
     pub(super) async fn start_core_by_service(&self) -> Result<()> {