FIX CRITICAL BUG: Correct FSCTL hex constants. Was 0x900B03/0x900F44, correct is 0x900B3/0x900F4. This caused DeviceIoControl to return ERROR_INVALID_FUNCTION(1), making MFT scan return 0 records.

FastSeekWpf/NativeInterop/Win32Api.cs

@@ -33,11 +33,15 @@ internal static class Win32Api
     public const uint FILE_FLAG_NO_BUFFERING = 0x20000000;
     public const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
 
-    // IOCTL codes
-    public const uint FSCTL_ENUM_USN_DATA = 0x900B03;
-    public const uint FSCTL_QUERY_USN_JOURNAL = 0x900F44;
-    public const uint FSCTL_READ_USN_JOURNAL = 0x900BB;
-    public const uint FSCTL_READ_FILE_USN_DATA = 0x900EB;
+    // ── IOCTL codes ──
+    // CRITICAL: These must match the Windows SDK exactly. Previous versions had
+    // typos (0x900B03 instead of 0x900B3, 0x900F44 instead of 0x900F4) which
+    // caused DeviceIoControl to return ERROR_INVALID_FUNCTION.
+    // Verified against windows-rs crate and Windows SDK winioctl.h.
+    public const uint FSCTL_ENUM_USN_DATA = 0x000900B3;
+    public const uint FSCTL_QUERY_USN_JOURNAL = 0x000900F4;
+    public const uint FSCTL_READ_USN_JOURNAL = 0x000900BB;
+    public const uint FSCTL_READ_FILE_USN_DATA = 0x000900EB;
 
     // USN reasons
     public const uint USN_REASON_FILE_CREATE = 0x00000100;