Improved Executable File Validation

What: Enhanced executable file checking to exclude zero-byte files

How it works: The executable validation now explicitly rejects empty files that previously might have been incorrectly considered valid executables.

Details:

• Checks file.size === 0 before attempting to verify execute permissions
• Prevents false positives when scanning for executable files
• More robust validation for system compatibility checks
• Evidence: MB1() at line 280658 - added Q.size === 0 check