refactor: change function definitions to const for improved performance and clarity

src-tauri/src/core/backup.rs

@@ -45,7 +45,7 @@ enum Operation {
 }
 
 impl Operation {
-    fn timeout(&self) -> u64 {
+    const fn timeout(&self) -> u64 {
         match self {
             Self::Upload => TIMEOUT_UPLOAD,
             Self::Download => TIMEOUT_DOWNLOAD,

src-tauri/src/core/hotkey.rs

@@ -84,7 +84,7 @@ impl fmt::Display for SystemHotkey {
 
 #[cfg(target_os = "macos")]
 impl SystemHotkey {
-    pub fn function(self) -> HotkeyFunction {
+    pub const fn function(self) -> HotkeyFunction {
         match self {
             Self::CmdQ => HotkeyFunction::Quit,
             Self::CmdW => HotkeyFunction::Hide,

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

@@ -137,7 +137,7 @@ impl CoreManager {
         }
     }
 
-    fn is_connection_io_error(kind: std::io::ErrorKind) -> bool {
+    const fn is_connection_io_error(kind: std::io::ErrorKind) -> bool {
         matches!(
             kind,
             std::io::ErrorKind::ConnectionAborted

src-tauri/src/core/service.rs

@@ -449,7 +449,7 @@ impl ServiceManager {
         Self(ServiceStatus::Unavailable("Need Checks".into()))
     }
 
-    pub fn config() -> Option<clash_verge_service_ipc::IpcConfig> {
+    pub const fn config() -> Option<clash_verge_service_ipc::IpcConfig> {
         Some(clash_verge_service_ipc::IpcConfig {
             default_timeout: Duration::from_millis(30),
             retry_delay: Duration::from_millis(250),

src-tauri/src/core/validate.rs

@@ -16,7 +16,7 @@ pub struct CoreConfigValidator {
 }
 
 impl CoreConfigValidator {
-    pub fn new() -> Self {
+    pub const fn new() -> Self {
         Self {
             is_processing: AtomicBool::new(false),
         }