Move GL state utility mapping to renderer gl

docs/modernization/build-inventory.md

@@ -186,6 +186,9 @@ Known local toolchain state:
   backend-owned texture readback formats, sampler filters, depth/blend state,
   depth clears, viewport queries, color-mask booleans, active texture units,
   and float render-target formats.
+  Legacy `util.cpp` OpenGL error naming and `gl_state` save/restore also
+  consume backend-owned error codes, state queries, framebuffer targets,
+  texture binding targets, and active texture units.
 - `windows-msvc-vcpkg-headless` validates manifest install/configure/build/test
   for the current headless component matrix; see DEBT-0007 for remaining app
   and platform triplet migration.