Enums whose variants hold values

enum Shape { Circle(float), Rect(float, float), Point }; Shape.Circle(2.0) makes one, match names the values
(Circle(r), _ to ignore), exhaustive like plain enums, printing shows Rect(2, 3.5). Underneath it is a struct (tag +
every variant's values), so copying, freeing, methods and valgrind-cleanliness come with it. Also: stray note files removed.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015f73FesGZGYPkmDvUcj6QX

tests/new/payload_enums.out

@@ -0,0 +1,6 @@
+Circle(2) 12 circle 2
+Rect(2, 3.5) 7 other
+Named("tri", [1, 2, 3]) 3 named tri
+Point 0 other
+Named("tri", [1, 2, 3])
+a point