feat: Add SLAB allocator, Ramdisk, Kernel Namespaces, Event Tracing, NetFilter Firewall, 8-Bit Melodies, and Shell Scripting (sh)

sound/melody.c

@@ -0,0 +1,47 @@
+#include <sound/melody.h>
+#include <drivers/speaker.h>
+#include <arch/x86_64/pit.h>
+
+void melody_init(void) {
+    // Initialized
+}
+
+void melody_play_custom(const note_t* notes, uint32_t count) {
+    if (!notes) return;
+    for (uint32_t i = 0; i < count; i++) {
+        if (notes[i].freq > 0) {
+            speaker_beep(notes[i].freq, notes[i].duration_ms);
+        } else {
+            pit_sleep(notes[i].duration_ms);
+        }
+        pit_sleep(20); // Small pause between notes
+    }
+}
+
+void melody_play_startup(void) {
+    note_t fanfare[] = {
+        {523, 100}, // C5
+        {659, 100}, // E5
+        {784, 120}, // G5
+        {1046, 250} // C6
+    };
+    melody_play_custom(fanfare, sizeof(fanfare) / sizeof(note_t));
+}
+
+void melody_play_tetris(void) {
+    note_t tetris[] = {
+        {659, 200}, {494, 100}, {523, 100}, {587, 200}, {523, 100}, {494, 100},
+        {440, 200}, {440, 100}, {523, 100}, {659, 200}, {587, 100}, {523, 100},
+        {494, 300}, {523, 100}, {587, 200}, {659, 200}, {523, 200}, {440, 200},
+        {440, 300}
+    };
+    melody_play_custom(tetris, sizeof(tetris) / sizeof(note_t));
+}
+
+void melody_play_mario(void) {
+    note_t mario[] = {
+        {659, 100}, {659, 100}, {0, 100}, {659, 100}, {0, 100},
+        {523, 100}, {659, 150}, {784, 250}, {0, 150}, {392, 250}
+    };
+    melody_play_custom(mario, sizeof(mario) / sizeof(note_t));
+}