Give Fake a local hold set, as the other renders have, and drop the done round item

fejkdata.go

@@ -34,8 +34,7 @@ type Generator struct {
 	mu         sync.Mutex
 	rand       *session
 	categories map[string]node
-	root       folder  // the categories as the node a path walks from, owned here so a walk allocates none
+	root       folder // the categories as the node a path walks from, owned here so a walk allocates none
-	set        holdSet // one Fake's hold set, owned here so a walk pinning rows keeps them off the heap
 	records    map[node]recordShape
 	structs    map[reflect.Type]structResult
 }

render.go

@@ -23,8 +23,8 @@ func (f *Generator) Fake(path string) (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("fejkdata: %w", err)
 	}
-	f.set = holdSet{}
+	var set holdSet
-	sc := renderScope{set: &f.set}
+	sc := renderScope{set: &set}
 	f.root.children = f.categories
 	n, err := descend(f.rand, &f.root, segments, sc)
 	if err != nil {

todo.md

@@ -23,9 +23,6 @@ Shape 5.8, Self-sufficiency 5.7), every seat capped by Locality, all nine naming
 
 This round, in order:
 
-- Give `Fake` a local hold set like `FakeRecord`, `RecordTemplate.Fake` and
-  `FakeStruct`, or state at `Generator.set` why it alone needs one: four seats read the
-  field's heap claim as contradicted by the other three.
 - Spell every panic an earlier check makes unreachable with one greppable phrase: the
   17 say "reached prep unvalidated", "should have been proved", "with no row pinned"
   and more, so a user's report greps to nothing.