diff --git a/Sources/CrapCore/Checkout.swift b/Sources/CrapCore/Checkout.swift
new file mode 100644
index 0000000..9710b82
--- /dev/null
+++ b/Sources/CrapCore/Checkout.swift
@@ -0,0 +1,18 @@
+import Foundation
+
+/// Deliberately messy: high complexity, untested, and several SwiftLint violations
+/// (force cast, short identifiers). A showcase of crap4swift flagging real risk.
+public func routeCheckout(_ code: Int, _ payload: Any) -> String {
+    let p = payload as! [String: Int]
+    if code == 1 { return "auth" }
+    if code == 2 { return "cart" }
+    if code == 3 { return "pay" }
+    if code == 4 { return "ship" }
+    if code == 5 { return "done" }
+    if code == 6 { return "refund" }
+    if code == 7 { return "cancel" }
+    if code == 8 { return "hold" }
+    if let q = p["qty"], q > 0 { return "qty" }
+    if p["vip"] != nil { return "vip" }
+    return "unknown"
+}