Document the wren node and the chat's Control tab

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013GAeg4Jo6xjZzjwy9QDWMQ
2026-10-05 20:59:23 +02:00
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@@ -53,6 +53,10 @@ its label showing so you can see which one it is without hovering.

 Each flow also has a switch beside it in the list, which starts and stops it.

+A [`wren` node](../reference/node-types.md#wren) anywhere adds a chat button
+at the graph's top right, in the header on a phone, which opens the chat on
+its [Control tab](../code/agents.md#control).
+
 ### Flows and dashboards

 Two columns under the graph, exactly as tall as each other, most recently