feat: unify runtime mode detection; support TUN and service installation in admin mode

src-tauri/src/cmd/system.rs

@@ -64,12 +64,12 @@ pub fn get_app_uptime() -> CmdResult<i64> {
 #[cfg(target_os = "windows")]
 pub fn is_admin() -> CmdResult<bool> {
     use deelevate::{PrivilegeLevel, Token};
-    
+
     let result = Token::with_current_process()
         .and_then(|token| token.privilege_level())
         .map(|level| level != PrivilegeLevel::NotPrivileged)
         .unwrap_or(false);
-    
+
     Ok(result)
 }
 
@@ -81,12 +81,12 @@ pub fn is_admin() -> CmdResult<bool> {
     {
         Ok(unsafe { libc::geteuid() } == 0)
     }
-    
+
     #[cfg(target_os = "linux")]
     {
         Ok(unsafe { libc::geteuid() } == 0)
     }
-    
+
     #[cfg(not(any(target_os = "macos", target_os = "linux")))]
     {
         Ok(false)