feat(core): implement spinlocks, GC and keyboard safety

* Implemented Spinlocks and applied to VM/Scheduler

* Added Garbage Collector for tasks

* Moved Getchar to IOKeyboard with locking

* Cleanup panic messages

kernel/inc/OS/OSScheduler.h

@@ -29,6 +29,7 @@ typedef struct OSTask {
     UInt32 sleepTicks;
     OSProcessState taskState; // reusing process_state cuz wn
     UInt64 kernelStackTop;
+    void* kernelStackBase;
     OSProcess* process;
     Int32 waitingForProcess;
 } OSTask;

kernel/inc/OS/OSSpinlock.h

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKarinyash
+
+#pragma once
+
+#include <types.h>
+
+typedef struct OSSpinlock {
+    volatile UInt32 lockValue;
+} OSSpinlock;
+
+typedef struct OSSpinlockState {
+    Boolean interruptsEnabled;
+} OSSpinlockState;
+
+void OSSpinlockLock(OSSpinlock* lock);
+void OSSpinlockUnlock(OSSpinlock* lock);
+void OSSpinlockLockIRQ(OSSpinlock* lock, OSSpinlockState* state);
+void OSSpinlockUnlockIRQ(OSSpinlock *lock, OSSpinlockState* state);