Watch: the Subagents section on the thread screen collapses behind a header with the count and how many wait or work, and opens on its own when one waits

watch/README.md

@@ -60,8 +60,8 @@ xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen thread
 status screens, the subagent card and thread, Recent with Settle all and the "N more" row, the full
 Recent list, a finished thread with Settle, a running thread with Ask before acting, New thread
 with its model list, the working cards' activity lines, All threads' hosts and a project's threads,
-a thread's subagents, Load earlier with markdown, the changes line and Changed list, search and
-its empty state, the complication's two modes, the Smart Stack widget, and a question
+a thread's subagents collapsed and open, Load earlier with markdown, the changes line and Changed
+list, search and its empty state, the complication's two modes, the Smart Stack widget, and a question
 notification are rendered by `SnapshotTests` instead, which only run when given a directory:
 
 ```sh