feat: restore Claude provider auth field selector (AUTH_TOKEN / API_KEY)

src/types.ts

@@ -149,6 +149,8 @@ export interface ProviderMeta {
   // - "openai_chat": OpenAI Chat Completions 格式，需要格式转换
   // - "openai_responses": OpenAI Responses API 格式，需要格式转换
   apiFormat?: "anthropic" | "openai_chat" | "openai_responses";
+  // Claude 认证字段名
+  apiKeyField?: ClaudeApiKeyField;
   // Prompt cache key for OpenAI-compatible endpoints (improves cache hit rate)
   promptCacheKey?: string;
 }
@@ -162,6 +164,9 @@ export type SkillSyncMethod = "auto" | "symlink" | "copy";
 // - "openai_responses": OpenAI Responses API 格式，需要格式转换
 export type ClaudeApiFormat = "anthropic" | "openai_chat" | "openai_responses";
 
+// Claude 认证字段类型
+export type ClaudeApiKeyField = "ANTHROPIC_AUTH_TOKEN" | "ANTHROPIC_API_KEY";
+
 // 主页面显示的应用配置
 export interface VisibleApps {
   claude: boolean;