feat: implement PS/2 keyboard & shell, dynamic heap (malloc/new), Zero-Copy SHM, and SMP multicore initialization

lib/libipc_cpp/src/ipc.cpp

@@ -1,5 +1,31 @@
 #include "../include/ipc.hpp"
+#include "stdlib.h"
+
+// Global C++ Operator Overloads for Ring 3 Userspace
+void* operator new(size_t size) {
+    return malloc(size);
+}
+
+void* operator new[](size_t size) {
+    return malloc(size);
+}
+
+void operator delete(void* ptr) noexcept {
+    free(ptr);
+}
+
+void operator delete[](void* ptr) noexcept {
+    free(ptr);
+}
+
+void operator delete(void* ptr, size_t) noexcept {
+    free(ptr);
+}
+
+void operator delete[](void* ptr, size_t) noexcept {
+    free(ptr);
+}
 
 namespace ipc {
-    // Shared library routines if needed
+    // Modern RAII methods if needed
 }