*: updated TODO

TODO

@@ -25,3 +25,4 @@ TODO:
 * maybe drop begin(v)/end(v) from sparse set and only use scoped begin/end at call sites
 * view unchecked_refresh loop is never executed if Get is 1u
 * review all // NOLINT + linter workflow + review clang-tidy file
+* self contained entity traits to avoid explicit specializations (ie enum constants)