Sync app branding and fix order list decode for referral_order payloads.

Align display name, icon, and launch screen with suixinkan_ios_new, and tolerate nested sale_user and empty travel objects in listv2 responses.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Assets.xcassets/SplashLogo.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "icon_splash.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}