dmarc-day, health-sockets: the reporter's day said; the inbound journal dialled

The owner, 2026-10-17: "Показ времени отчёта по UTC принимаем. Это не
проблема. Пояснения добавь. Все мелочи закрой." Designs 9b33b80, 2bf9056.

DMARC: a report's day stays the reporter's, in UTC (RFC 7489 § 7.2); the
report's Window now says so under its times (windowNote), and Settings'
Time zone box and Help (#settings, #dmarc) name it as the one exception to
the panel's zone. formatDMARCWindow counts a window that ends at midnight
as ending the day before, so a daily report is one day, not "20 Sep - 21
Sep" (TestDMARCWindowIsTheReportersDay, in Moscow's zone).

Health: with the inbound relay on, the inbound journal milter's socket is
dialled (InboundJournalSocket through web and handlers Config), fail-open
as the send log's, and Overview's card counts it; the send log's socket is
named journal-milter, as the mockup names it.

The confirmation link's sign-in state is drawn (confirm-email-signin.html);
the panel already renders it.

guide: /license and /server/components, the DMARC pages' paths and day,
selfpost-backup -o / -i / -version, the Inbound log's retention field,
PANEL_COOKIE_SECURE, the inbound journal's socket, the DMARC exception to
the zone. CHANGELOG [Unreleased].

(The e2e case negative_level1_ratelimit, listed as able to pass falsely,
was fixed on 2026-10-14 - the note was stale.)

go vet + go test (26 packages) and make e2e on the test server for this
tree.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/handlers/handlers_dmarc_reports.go

@@ -222,12 +222,21 @@ func (h *Handlers) relayIPs() map[string]bool {
 	return ips
 }
 
+// formatDMARCWindow is the day, or days, a report covers, as its reporter
+// counts them: in UTC (RFC 7489 § 7.2, date-range in UTC seconds), which the
+// panel keeps whatever its own zone (owner, 2026-10-17). A window that ends
+// at midnight ends the day before: a daily report from 00:00 to 00:00 is one
+// day, not two.
 func formatDMARCWindow(begin, end time.Time) string {
 	if begin.IsZero() {
 		return ""
 	}
-	if begin.Year() == end.Year() && begin.YearDay() == end.YearDay() {
-		return begin.UTC().Format("2 Jan")
+	begin, last := begin.UTC(), end.UTC()
+	if last.After(begin) && last.Equal(last.Truncate(24*time.Hour)) {
+		last = last.Add(-time.Second)
 	}
-	return begin.UTC().Format("2 Jan") + " – " + end.UTC().Format("2 Jan")
+	if begin.Year() == last.Year() && begin.YearDay() == last.YearDay() {
+		return begin.Format("2 Jan")
+	}
+	return begin.Format("2 Jan") + " – " + last.Format("2 Jan")
 }