BootZ: Introduce NetBoot module & consolidate STANDALONE macro

- Renamed __BOOTLDR_STANDALONE__ → __BOOTZ_STANDALONE__ across all modules.
- Introduced NetBoot module to support fallback booting via packets.
- Updated amd64-desktop build to bundle netboot.sys as part of system image.
- NetBoot now properly zeroes out its header and performs sanity check on PatchLength.
- Boot flow now attempts to fallback to NetBoot if neoskrnl.exe fails to start.
- Reorganized disk formatting logic for clarity and better failure recovery.
- HeFS & NeFS minimum disk size lowered (64GiB → 256MiB and 4GiB → 8MiB).
- Renamed `IndexProperty` to `Index` in FSKit::Indexer.
- Moved HintKit → hint/, updated includes and guards.
- Removed deprecated LPC.{cc,h}, replaced by ProcessCodes.h.
- Modernized SystemCalls.h typedefs: SCIObject → Ref, ThreadObject → ThreadRef, etc.
- Updated userland tools `make_app` and `open` with copyright and behavior fixes.

This prepares the BootZ infrastructure for headless/network environments.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/dev/user/ProcessCodes.h b/dev/user/ProcessCodes.h
new file mode 100644
index 00000000..2b740784
--- /dev/null
+++ b/dev/user/ProcessCodes.h
@@ -0,0 +1,56 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <user/Macros.h>
+
+/// @file ProcessCodes.h
+/// @brief Process Codes type and values.
+
+#define err_local_ok()	 (kLastError == kErrorSuccess)
+#define err_local_fail() (kLastError != kErrorSuccess)
+#define err_local_get()	 (kLastError)
+
+typedef SInt32 ErrKind;
+
+inline constexpr ErrKind kErrorSuccess			  = 0;
+inline constexpr ErrKind kErrorExecutable		  = 33;
+inline constexpr ErrKind kErrorExecutableLib	  = 34;
+inline constexpr ErrKind kErrorFileNotFound		  = 35;
+inline constexpr ErrKind kErrorDirectoryNotFound  = 36;
+inline constexpr ErrKind kErrorDiskReadOnly		  = 37;
+inline constexpr ErrKind kErrorDiskIsFull		  = 38;
+inline constexpr ErrKind kErrorProcessFault		  = 39;
+inline constexpr ErrKind kErrorSocketHangUp		  = 40;
+inline constexpr ErrKind kErrorThreadLocalStorage = 41;
+inline constexpr ErrKind kErrorMath				  = 42;
+inline constexpr ErrKind kErrorNoNetwork		  = 43;
+inline constexpr ErrKind kErrorHeapOutOfMemory	  = 44;
+inline constexpr ErrKind kErrorNoSuchDisk		  = 45;
+inline constexpr ErrKind kErrorFileExists		  = 46;
+inline constexpr ErrKind kErrorFormatFailed		  = 47;
+inline constexpr ErrKind kErrorNetworkTimeout	  = 48;
+inline constexpr ErrKind kErrorInternal			  = 49;
+inline constexpr ErrKind kErrorForkAlreadyExists  = 50;
+inline constexpr ErrKind kErrorOutOfTeamSlot	  = 51;
+inline constexpr ErrKind kErrorHeapNotPresent	  = 52;
+inline constexpr ErrKind kErrorNoEntrypoint		  = 53;
+inline constexpr ErrKind kErrorDiskIsCorrupted	  = 54;
+inline constexpr ErrKind kErrorDisk				  = 55;
+inline constexpr ErrKind kErrorInvalidData		  = 56;
+inline constexpr ErrKind kErrorAsync			  = 57;
+inline constexpr ErrKind kErrorNonBlocking		  = 58;
+inline constexpr ErrKind kErrorIPC				  = 59;
+inline constexpr ErrKind kErrorSign				  = 60;
+inline constexpr ErrKind kErrorInvalidCreds		  = 61;
+inline constexpr ErrKind kErrorCDTrayBroken		  = 62;
+inline constexpr ErrKind kErrorUnrecoverableDisk  = 63;
+inline constexpr ErrKind kErrorFileLocked		  = 64;
+inline constexpr ErrKind kErrorUnimplemented	  = -1;
+
+/// @brief The last error reported by the system to the process.
+IMPORT_C ErrKind kLastError;