Lead Home with what's happening, and give settings a page

Home answers "what's my headset doing, and what do I want to do now". A
Right now card says whether SteamVR is running and holds the volume and the
next things people do: cast to this screen, play a video or photo, show a
Mac window, send files, type on the Frame. With nothing captured, the
headset view is a short strip rather than a big black box; the keyboard and
trackpad fold to one line until turned on; VR performance folds away.
Screenshots and Family and comfort follow.

Tools is grouped: in the headset (Mac in the headset, the media player, the
panel switcher), then sending files, Linux apps, remote and power. Privacy
and updates, library artwork and the assistant move to a Settings page,
opened by a gear in the header (key 6), with About and licences.

Family and comfort no longer fills the form with a finished session's
settings, so it shows 30 / 20 / 30 rather than the last test's 1 / 0 / 0,
and its recent events carry their times.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/agents.md

@@ -97,7 +97,7 @@ replies, screenshots and approval payloads are not sent to analytics.
 
 ## Assistant panel
 
-Open **Tools → Open assistant**, or `http://127.0.0.1:47810/assistant`.
+Open **Settings** (the gear in the header) **→ Open assistant settings**, or `http://127.0.0.1:47810/assistant`.
 To put the same page in the headset, with the HTTP server still running:
 
 ```sh