Flow canvas draws panel I/O ports as panel:<id>:<port> endpoints that open their panel in the Panels dialog

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WgBfkm4rCmtd1T4vHWjEPx

docs/interface/dashboards.md

@@ -437,7 +437,9 @@ message:
 The credential may publish to its `in` messages even when a dashboard is
 locked, and may upload an artifact named after one
 (`PUT /artifacts?name=<message>`), which is how a microphone sends a recording.
-`out` messages are read only.
+`out` messages are read only. The flow canvas draws each port as an endpoint,
+an `in` port feeding the nodes that consume its message and an `out` port fed
+by the nodes that produce it.
 
 !!! note "If the local link is wrong"