feat: add party-size queueing and call modes

server/internal/domain/experienced_people.go

@@ -0,0 +1,16 @@
+package domain
+
+// DisplayExperiencedPeople applies the project's configured display floor to
+// the actual number of tickets issued for the current business day.
+func DisplayExperiencedPeople(start int, actual int64) int64 {
+	if start < 0 {
+		start = 0
+	}
+	if actual < 0 {
+		actual = 0
+	}
+	if displayedStart := int64(start); displayedStart > actual {
+		return displayedStart
+	}
+	return actual
+}