fix(core): stabilize public SDK contract

Author: GaspardKirira

CMakeLists.txt

@@ -565,6 +565,10 @@ else()
   add_library(vix_core INTERFACE)
   add_library(vix::core ALIAS vix_core)
 
+  set_target_properties(vix_core PROPERTIES
+    EXPORT_NAME core
+  )
+
   target_compile_features(vix_core INTERFACE cxx_std_20)
 
   target_include_directories(vix_core INTERFACE

include/vix/Version.hpp

@@ -3,8 +3,8 @@
  *
  * Central version metadata for the Vix core runtime.
  */
-#ifndef VIX_VERSION_HPP
-#define VIX_VERSION_HPP
+#ifndef VIX_CORE_VERSION_HPP
+#define VIX_CORE_VERSION_HPP
 
 #include <string_view>
 
@@ -14,4 +14,4 @@ namespace vix
   inline constexpr std::string_view CORE_VERSION = VERSION;
 }
 
-#endif // VIX_VERSION_HPP
+#endif // VIX_CORE_VERSION_HPP