Add TODO

ConflictSet.cpp

@@ -604,9 +604,11 @@ Iterator firstGeq(Node *n, const std::span<const uint8_t> key) {
   return {stepwise.n, stepwise.cmp};
 }
 
+// TODO rewrite in terms of FirstGeqStepwise?
+//
 // Logically this is the same as performing firstGeq and then checking against
 // point or range version according to cmp, but this version short circuits as
-// soon as it can prove that there's no conflict
+// soon as it can prove that there's no conflict.
 bool checkPointRead(Node *n, const std::span<const uint8_t> key,
                     int64_t readVersion) {
   auto remaining = key;