Test a pending delivery whose target is found only on lookup

When the batch's target map lacks a delivery's target, as it does
for every delivery when the batch query fails, sendRecoveredDeliveries
looks the target up on its own. The new test hands it an empty map
and checks the healthy delivery is queued once, with its real target
id and type.

Model: opus-5-5

internal/delivery/export_test.go

@@ -352,6 +352,21 @@ func (e *Engine) ExportFailMissingTarget(
 	e.failMissingTarget(webhookDB, webhookID, d)
 }
 
+// ExportSendRecoveredDeliveries exposes sendRecoveredDeliveries, so a
+// test can hand it a target map that lacks a delivery's target.
+func (e *Engine) ExportSendRecoveredDeliveries(
+	ctx context.Context,
+	webhookDB *gorm.DB,
+	deliveries []database.Delivery,
+	webhookID string,
+	targetMap map[string]database.Target,
+	settled map[string]struct{},
+) {
+	e.sendRecoveredDeliveries(
+		ctx, webhookDB, deliveries, webhookID, targetMap, settled,
+	)
+}
+
 // ExportDeliveryCh returns the delivery channel.
 func (e *Engine) ExportDeliveryCh() chan Task {
 	return e.deliveryCh