fix shutdown.cpp per a macos (altra volta)

source/shutdown.cpp

@@ -91,33 +91,22 @@ namespace SystemShutdown {
         }
 
 #elif __APPLE__
-        // macOS
-        double delay_minutes = config.delay_seconds / 60.0;
-        std::string delay_str = "+" + std::to_string(delay_minutes);
-        if (config.delay_seconds < 60) {
-            delay_str = "+0.1"; // mínimo delay en macOS
-        }
-        
+        // macOS - apagado inmediato
         char* args[] = {
             const_cast<char*>("shutdown"),
             const_cast<char*>("-h"),
-            const_cast<char*>(delay_str.c_str()),
+            const_cast<char*>("now"),
             NULL
         };
         
         return executeUnixShutdown("shutdown", args);
 
 #elif __linux__
-        // Linux
-        std::string delay_str = "+" + std::to_string((config.delay_seconds + 59) / 60); // redondear hacia arriba a minutos
-        if (config.delay_seconds == 0) {
-            delay_str = "now";
-        }
-        
+        // Linux - apagado inmediato
         char* args[] = {
             const_cast<char*>("shutdown"),
             const_cast<char*>("-h"),
-            const_cast<char*>(delay_str.c_str()),
+            const_cast<char*>("now"),
             NULL
         };