feat: 新增 ZenMux Token Plan 供应商，支持手动凭证与 USD 额度富展示 (#2709)

* feat(Token plan): 增加 ZenMux 支持

* chore: format code with prettier

* chore: format code with cargo fmt

---------

Co-authored-by: 明桓 <jihaodong.jhd@oceanbase.com>
Co-authored-by: Jason <farion1231@gmail.com>

src/icons/extracted/metadata.ts

@@ -306,6 +306,13 @@ export const iconMetadata: Record<string, IconMetadata> = {
     keywords: ["minimax"],
     defaultColor: "#FF6B6B",
   },
+  zenmux: {
+    name: "zenmux",
+    displayName: "ZenMux",
+    category: "ai-provider",
+    keywords: ["zenmux", "zen", "mux"],
+    defaultColor: "#6366F1",
+  },
   mistral: {
     name: "mistral",
     displayName: "Mistral",