fix: recompute counts from actual edits array (129, not 132)

benchmark_manifest.json

@@ -42,21 +42,21 @@
   "counts": {
     "scenes": 20,
     "sources": 20,
-    "edits": 132,
+    "edits": 129,
     "by_property": {
       "friction": 21,
       "initial_velocity": 26,
       "mass": 32,
-      "presence": 40,
+      "presence": 37,
       "restitution": 13
     },
     "by_kind": {
       "SET": 92,
-      "DELETE": 33,
+      "DELETE": 30,
       "ADD": 7
     },
     "by_timing": {
-      "partway": 15,
+      "partway": 12,
       "whole_clip": 117
     }
   },
@@ -6277,4 +6277,4 @@
       "thumbnail": "thumbnails/twin_ramp_collision/edit_remove_purple_ball_after_impact.jpg"
     }
   ]
-}
+}