feat: add ddshub provider preset with partner promotion

Add ddshub as a third-party partner provider for Claude, including
SVG icon and i18n promotion text in zh/en/ja locales.

src/config/claudeProviderPresets.ts

@@ -653,6 +653,22 @@ export const providerPresets: ProviderPreset[] = [
     icon: "ctok",
     iconColor: "#000000",
   },
+  {
+    name: "ddshub",
+    websiteUrl: "https://www.ddshub.cc",
+    apiKeyUrl: "https://ddshub.short.gy/ccswitch",
+    settingsConfig: {
+      env: {
+        ANTHROPIC_BASE_URL: "https://www.ddshub.cc",
+        ANTHROPIC_AUTH_TOKEN: "",
+      },
+    },
+    category: "third_party",
+    isPartner: true, // 合作伙伴
+    partnerPromotionKey: "ddshub", // 促销信息 i18n key
+    icon: "dds",
+    iconColor: "#000000",
+  },
   {
     name: "OpenRouter",
     websiteUrl: "https://openrouter.ai",