inbound-antispam-panel: three things the reviews left as found

The owner asked for them to be put right (2026-10-12).

  - A refusal is not logged twice after an unclean stop. The tailer
    saves its place every five seconds, so on start it reads some
    lines again; for the lines it reads on start a row is written only
    if the same row is not there already (store.InsertInboundSpamOnce:
    same moment, client, sender, recipient, decision, engine, detail).
    Lines read as they are written are always new, so two identical
    refusals in one second stay two rows.
  - The Inbound log offers Deny / Allow sender only for a sender the
    lists would take (inbound.Listable): an envelope sender may be
    spelt in ways the form refuses, and the link led to a refusal.
  - A network of one address is stored as the address: 192.0.2.7/32
    and 192.0.2.7 were two entries of one list.

Checked on the test server, uncommitted tree: go vet ./... ok,
go test ./... ok (22 packages), make e2e ok.

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

internal/web/view/inbound_log.go

@@ -85,7 +85,10 @@ type InLogRow struct {
 // From may be empty: refused mail is read from mail.log, which has no subject,
 // and a filter that said nothing has no detail.
 type InLogRowInput struct {
-	ID       int64
+	ID int64
+	// Listable says the sender is an address the filter lists would take. A
+	// row whose sender they would refuse offers no way into them.
+	Listable bool
 	At       time.Time
 	From     string
 	Client   string
@@ -149,7 +152,7 @@ func (p *InLog) NewRow(in InLogRowInput) InLogRow {
 			Rows: whyRows(in.Decision, in.Engine, in.Detail, in.Subject),
 		},
 	}
-	if p.IsGlobal {
+	if p.IsGlobal && in.Listable {
 		r.Action = senderAction(in.Decision, in.Engine, in.From)
 	}
 	return r