9 files changed, 27 insertions, 21 deletions
diff --git a/src/kernel/KernelKit/BinaryMutex.h b/src/kernel/KernelKit/BinaryMutex.h
index 2fb390d3..2388c50a 100644
--- a/src/kernel/KernelKit/BinaryMutex.h
+++ b/src/kernel/KernelKit/BinaryMutex.h
@@ -7,6 +7,7 @@
 #define KERNELKIT_BINARYMUTEX_H
 
 #include <CompilerKit/CompilerKit.h>
+#include <KernelKit/CoreProcessScheduler.h>
 #include <KernelKit/Timer.h>
 #include <NeKit/Config.h>
 
@@ -14,6 +15,7 @@ namespace Kernel {
 class UserProcess;
 
 /// @brief Access control class, which locks a task until one is done.
+/// Implements priority inheritance to prevent priority inversion.
 class BinaryMutex final {
  public:
   using LockedPtr = UserProcess*;
@@ -36,7 +38,8 @@ class BinaryMutex final {
   NE_COPY_DEFAULT(BinaryMutex)
 
  private:
-  LockedPtr fLockingProcess{nullptr};
+  LockedPtr    fLockingProcess{nullptr};
+  AffinityKind fOwnerOriginalAffinity{AffinityKind::kInvalid};  // for priority inheritance
 };
 }  // namespace Kernel
 
diff --git a/src/kernel/KernelKit/CoreProcessScheduler.h b/src/kernel/KernelKit/CoreProcessScheduler.h
index 71a75e1a..5d6dc9b3 100644
--- a/src/kernel/KernelKit/CoreProcessScheduler.h
+++ b/src/kernel/KernelKit/CoreProcessScheduler.h
@@ -146,7 +146,7 @@ enum struct ProcessStatusKind : Int32 {
 /***********************************************************************************/
 enum struct AffinityKind : Int32 {
   kInvalid      = 0,
-  kRealTime     = 100,
+  kUltraHigh    = 100,
   kVeryHigh     = 150,
   kHigh         = 200,
   kStandard     = 1000,
diff --git a/src/kernel/KernelKit/DebugOutput.h b/src/kernel/KernelKit/DebugOutput.h
index 3695602e..4a705804 100644
--- a/src/kernel/KernelKit/DebugOutput.h
+++ b/src/kernel/KernelKit/DebugOutput.h
@@ -185,7 +185,7 @@ inline TerminalDevice& operator<<(TerminalDevice& src, const Long& num) {
 #undef kout
 #endif  // ifdef kout
 
-#define kout TerminalDevice::The()
+#define kout TerminalDevice::The() << __FILE__ << ": "
 
 #ifdef kendl
 #undef kendl
@@ -197,7 +197,7 @@ inline TerminalDevice& operator<<(TerminalDevice& src, const Long& num) {
 #undef kout8
 #endif  // ifdef kout8
 
-#define kout8 Utf8TerminalDevice::The()
+#define kout8 Utf8TerminalDevice::The() << __FILE__ << ": "
 
 #ifdef kendl8
 #undef kendl8
diff --git a/src/kernel/KernelKit/DriveMgr.h b/src/kernel/KernelKit/DriveMgr.h
index 76ee5dcf..8b095f05 100644
--- a/src/kernel/KernelKit/DriveMgr.h
+++ b/src/kernel/KernelKit/DriveMgr.h
@@ -3,8 +3,8 @@
 // Licensed under the Apache License, Version 2.0 (see LICENSE file)
 // Official repository: https://github.com/ne-foss-org/nekernel
 
-#ifndef INC_DRIVE_MANAGER_H
-#define INC_DRIVE_MANAGER_H
+#ifndef KERNELKIT_DRIVEMGR_H
+#define KERNELKIT_DRIVEMGR_H
 
 /// @file DriveMgr.h
 /// @brief NeKernel's drive manager.
@@ -166,4 +166,4 @@ Void io_drv_input(DriveTrait::DrivePacket pckt);
 Void io_drv_output(DriveTrait::DrivePacket pckt);
 }  // namespace Kernel
 
-#endif /* ifndef INC_DRIVE_MANAGER_H */
+#endif /* ifndef KERNELKIT_DRIVEMGR_H */
diff --git a/src/kernel/KernelKit/FileMgr.h b/src/kernel/KernelKit/FileMgr.h
index 87644e68..06af3c2d 100644
--- a/src/kernel/KernelKit/FileMgr.h
+++ b/src/kernel/KernelKit/FileMgr.h
@@ -3,14 +3,14 @@
 // Licensed under the Apache License, Version 2.0 (see LICENSE file)
 // Official repository: https://github.com/ne-foss-org/nekernel
 
-#ifndef INC_FILEMGR_H
-#define INC_FILEMGR_H
+#ifndef KERNELKIT_FILEMGR_H
+#define KERNELKIT_FILEMGR_H
 
 /// @file FileMgr.h
 /// @brief File Manager Subsystem.
 /// @author Amlal El Mahrouss (amlal@nekernel.org)
 
-//! Include filesystems that NeKernel supports.
+//! Include filesystems that the hybrid kernel supports.
 #include <FSKit/Ext2+IFS.h>
 #include <FSKit/NeFS.h>
 #include <FSKit/OpenHeFS.h>
@@ -352,7 +352,7 @@ class FileStream final {
 
   /// @brief Leak MIME.
   /// @return The MIME.
-  Char* MIME() { return const_cast<Char*>(fMime); }
+  Char* MIME() { return fMime; }
 
   enum {
     kFileMgrRestrictRead = 100,
@@ -364,14 +364,15 @@ class FileStream final {
   };
 
  private:
-  NodePtr     fFile{nullptr};
-  Int32       fFileRestrict{kFileMgrRestrictReadBinary};
-  const Char* fMime{kFileMimeGeneric};
+  NodePtr fFile{nullptr};
+  Int32   fFileRestrict{kFileMgrRestrictReadBinary};
+  Char*   fMime{const_cast<Char*>(kFileMimeGeneric)};
 };
 
 using FileStreamASCII = FileStream<Char>;
 using FileStreamUTF8  = FileStream<Utf8Char>;
-using FileStreamUTF16 = FileStream<WideChar>;
+using FileStreamUTF16 = FileStream<Utf16Char>;
+using FileStreamWide  = FileStream<WideChar>;
 
 typedef UInt64 CursorType;
 
@@ -423,9 +424,9 @@ inline FileStream<Encoding, Class>::FileStream(const Encoding* path, const Encod
 /// @brief destructor of the file stream.
 template <typename Encoding, typename Class>
 inline FileStream<Encoding, Class>::~FileStream() {
-  mm_free_ptr(fFile);
+  if (fFile) mm_free_ptr(fFile);
   fFile = nullptr;
 }
 }  // namespace Kernel
 
-#endif  // ifndef INC_FILEMGR_H
+#endif  // ifndef KERNELKIT_FILEMGR_H
diff --git a/src/kernel/KernelKit/HardwareThreadScheduler.h b/src/kernel/KernelKit/HardwareThreadScheduler.h
index a9183cd2..43a906d6 100644
--- a/src/kernel/KernelKit/HardwareThreadScheduler.h
+++ b/src/kernel/KernelKit/HardwareThreadScheduler.h
@@ -12,6 +12,7 @@
 
 /// @note Last Rev Sun 28 Jul CET 2024
 /// @note Last Rev Thu, Aug  1, 2024  9:07:38 AM
+/// @note Last Rev Sun, March  22, 2026  5:16 PM
 
 #if defined(__nekernel_max_cores)
 /// \note This can be edited at compile-time to specify how many cores can be used by NeKernel.
diff --git a/src/kernel/KernelKit/UserMgr+User.h b/src/kernel/KernelKit/User.h
index bae51180..bae51180 100644
--- a/src/kernel/KernelKit/UserMgr+User.h
+++ b/src/kernel/KernelKit/User.h
diff --git a/src/kernel/KernelKit/UserMgr.h b/src/kernel/KernelKit/UserMgr.h
index 16ca79b6..7fc2b635 100644
--- a/src/kernel/KernelKit/UserMgr.h
+++ b/src/kernel/KernelKit/UserMgr.h
@@ -6,6 +6,6 @@
 #ifndef KERNELKIT_USERMGR_H
 #define KERNELKIT_USERMGR_H
 
-#include <KernelKit/UserMgr+User.h>
+#include <KernelKit/User.h>
 
 #endif
 \ No newline at end of file
diff --git a/src/kernel/KernelKit/UserProcessScheduler.h b/src/kernel/KernelKit/UserProcessScheduler.h
index 5018f1f6..1318c7f6 100644
--- a/src/kernel/KernelKit/UserProcessScheduler.h
+++ b/src/kernel/KernelKit/UserProcessScheduler.h
@@ -13,7 +13,7 @@
 #include <ArchKit/ArchKit.h>
 #include <KernelKit/CoreProcessScheduler.h>
 #include <KernelKit/LockDelegate.h>
-#include <KernelKit/UserMgr+User.h>
+#include <KernelKit/User.h>
 #include <NeKit/MutableArray.h>
 
 ////////////////////////////////////////////////////
@@ -83,9 +83,10 @@ class UserProcess final {
     kExecutableKindCount,
   };
 
-  ProcessTime PTime{0};  //! @brief Process allocated tine.
+  ProcessTime PTime{0};  //! @brief Process allocated time.
   ProcessTime RTime{0};  //! @brief Process run time.
-  ProcessTime UTime{0};  //! #brief Process used time.
+  ProcessTime UTime{0};  //! @brief Process used time.
+  ProcessTime STime{0};  //! @brief Process sleep time (for dynamic priority boost).
 
   ProcessID      ProcessId{kCPSInvalidPID};
   ExecutableKind Kind{ExecutableKind::kExecutableKind};