feat(presets): add DDSHub Codex preset

DDSHub now exposes a Codex-compatible endpoint at the same host as
its Claude service. Base URL omits the /v1 suffix since the gateway
auto-routes OpenAI SDK paths.

src/config/codexProviderPresets.ts

@@ -364,6 +364,23 @@ requires_openai_auth = true`,
     partnerPromotionKey: "lionccapi",
     icon: "lioncc",
   },
+  {
+    name: "DDSHub",
+    websiteUrl: "https://www.ddshub.cc",
+    apiKeyUrl: "https://ddshub.short.gy/ccswitch",
+    category: "third_party",
+    auth: generateThirdPartyAuth(""),
+    config: generateThirdPartyConfig(
+      "ddshub",
+      "https://www.ddshub.cc",
+      "gpt-5.4",
+    ),
+    endpointCandidates: ["https://www.ddshub.cc"],
+    isPartner: true,
+    partnerPromotionKey: "ddshub",
+    icon: "dds",
+    iconColor: "#000000",
+  },
   {
     name: "E-FlowCode",
     websiteUrl: "https://e-flowcode.cc",