multi profile (#4532)

* multi-profile work

* another test

* clean up

* cover a quirk with a test

* last of tests

* fix typos

* Fix source range in snap test

---------

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

src/lang/modifyAst/addEdgeTreatment.test.ts

@@ -275,7 +275,7 @@ const runModifyAstCloneWithEdgeTreatmentAndTag = async (
   const selection: Selections = {
     graphSelections: segmentRanges.map((segmentRange) => {
       const maybeArtifact = [...artifactGraph].find(([, a]) => {
-        if (!('codeRef' in a)) return false
+        if (!('codeRef' in a && a.codeRef)) return false
         return isOverlap(a.codeRef.range, segmentRange)
       })
       return {