Feat/Add ByteDance Ark provider (#226)

electron/utils/provider-registry.ts

@@ -10,6 +10,7 @@ export const BUILTIN_PROVIDER_TYPES = [
   'openai',
   'google',
   'openrouter',
+  'ark',
   'moonshot',
   'siliconflow',
   'minimax-portal',
@@ -73,6 +74,14 @@ const REGISTRY: Record<string, ProviderBackendMeta> = {
       },
     },
   },
+  ark: {
+    envVar: 'ARK_API_KEY',
+    providerConfig: {
+      baseUrl: 'https://ark.cn-beijing.volces.com/api/v3',
+      api: 'openai-completions',
+      apiKeyEnv: 'ARK_API_KEY',
+    },
+  },
   moonshot: {
     envVar: 'MOONSHOT_API_KEY',
     defaultModel: 'moonshot/kimi-k2.5',