REFACTOR: Error handling

CMakeLists.txt

@@ -25,8 +25,9 @@ target_include_directories(libvec
         ${CMAKE_CURRENT_SOURCE_DIR}/include
 )
 
-add_executable(test_runner src/main.c)
+add_executable(libvec_bin src/main.c)
+set_target_properties(libvec_bin PROPERTIES OUTPUT_NAME "libvec")
 
 # Linking libvec privately gives test_runner access to include/libvec.h,
 # but strictly hides src/lib/char/char.h and src/lib/utils/utils.h.
-target_link_libraries(test_runner PRIVATE libvec)
+target_link_libraries(libvec_bin PRIVATE libvec)