diff --git a/backend/internal/web/admin_overview.go b/backend/internal/web/admin_overview.go
index 9d1ca86..10b71a7 100644
--- a/backend/internal/web/admin_overview.go
+++ b/backend/internal/web/admin_overview.go
@@ -64,8 +64,11 @@ type siteRow struct {
 // overviewView assembles the landing page from the store's read model: one
 // SeriesShapes pass per filter summed in Go (the shipped surface offers ten
 // grouped passes, not a stats query — #140), the pass log's latest pass per
-// Site, and the roster. A failure in any read is a 500 with a logged reason,
-// never a page of silent zeroes.
+// Site, and the roster. A failure in the SeriesShapes, pass or roster reads
+// is a 500 with a logged reason, never a page of silent zeroes. The three
+// fault-input reads (RefusingSince, SidecarOK, NoChapterShare) fail open:
+// a failing read logs and contributes no fault, so the landing page still
+// renders — the same fail-open the poller uses for owner notices.
 func (h *Handler) overviewView() (overviewView, error) {
 	now := time.Now()
 	cutoff := now.Add(-ownerWindow).UnixMilli()