The admin API document regenerated for CollectResult's left counts

cba4897 added fields without regenerating it, and
TestTheAdminAPIDocumentIsNotStale failed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/admin-api.openapi.json

@@ -6234,7 +6234,7 @@
       },
       "CollectResult": {
         "type": "object",
-        "description": "CollectResult is what was deleted on one node, or why nothing was.",
+        "description": "CollectResult is what was deleted on one node, or why nothing was: what the node no longer lists once asked, not what it was asked to delete.",
         "properties": {
           "node": {
             "type": "string"
@@ -6246,6 +6246,14 @@
             "type": "integer",
             "format": "int64"
           },
+          "left": {
+            "type": "integer",
+            "description": "Left and LeftBytes are what the node still lists: refused, or not gone by the time the sweep stopped waiting. Its agent's log says why."
+          },
+          "left_bytes": {
+            "type": "integer",
+            "format": "int64"
+          },
           "error": {
             "type": "string"
           }