diff --git a/web/index.html b/web/index.html
index 8891f4c..b49b3d4 100644
--- a/web/index.html
+++ b/web/index.html
@@ -63,12 +63,18 @@
nothing needs them. The rail control carries an amber entry count,
refreshed with the health poll; amber is attention, cyan stays the
interaction hue.
+ SHELL (§9.7, issue 173): the library is the homepage — "/" renders the
+ library deck, and the wordmark on the rail is a link home. The signal
+ chain above is no longer a route: it lives as the first section of
+ /settings, its lamps still driven by the health poll, and the master
+ lamp stays on the rail so the one-glance read survives the move. Where
+ earlier notes here say "returns to the board", read "the library".
-->