-

internal/domain/duration.go

@@ -45,3 +45,13 @@ func (d Duration) MarshalJSON() ([]byte, error) {
 func (d Duration) String() string {
 	return d.Duration.String()
 }
+
+// Int64 returns the duration in nanoseconds for validator compatibility
+func (d Duration) Int64() int64 {
+	return int64(d.Duration)
+}
+
+// IsZero returns true if the duration is zero
+func (d Duration) IsZero() bool {
+	return d.Duration == 0
+}