feat(ark): add Code Plan mode preset and guided setup (#617)

electron/shared/providers/registry.ts

@@ -95,6 +95,9 @@ export const PROVIDER_DEFINITIONS: ProviderDefinition[] = [
     modelIdPlaceholder: 'ep-20260228000000-xxxxx',
     category: 'official',
     envVar: 'ARK_API_KEY',
+    codePlanPresetBaseUrl: 'https://ark.cn-beijing.volces.com/api/coding/v3',
+    codePlanPresetModelId: 'ark-code-latest',
+    codePlanDocsUrl: 'https://www.volcengine.com/docs/82379/1928261?lang=zh',
     supportedAuthModes: ['api_key'],
     defaultAuthMode: 'api_key',
     supportsMultipleAccounts: true,

electron/shared/providers/types.ts

@@ -84,6 +84,9 @@ export interface ProviderTypeInfo {
   isOAuth?: boolean;
   supportsApiKey?: boolean;
   apiKeyUrl?: string;
+  codePlanPresetBaseUrl?: string;
+  codePlanPresetModelId?: string;
+  codePlanDocsUrl?: string;
 }
 
 export interface ProviderModelEntry extends Record<string, unknown> {