feat: support ANTHROPIC_API_KEY field and add AiHubMix provider

Add compatibility for providers that use ANTHROPIC_API_KEY instead of
ANTHROPIC_AUTH_TOKEN, enabling support for AiHubMix and similar services.

Changes:
- Backend: Add fallback to ANTHROPIC_API_KEY in credential extraction
  - migration.rs: Support API_KEY during config migration
  - services/provider.rs: Extract credentials from either field
- Frontend: Smart API key field detection and management
  - getApiKeyFromConfig: Read from either field (AUTH_TOKEN priority)
  - setApiKeyInConfig: Write to existing field, preserve user choice
  - hasApiKeyField: Detect presence of either field
- Add AiHubMix provider preset with dual endpoint candidates
- Define apiKeyField metadata for provider presets (documentation)

Technical Details:
- Uses or_else() for zero-cost field fallback in Rust
- Runtime field detection ensures correct field name preservation
- Maintains backward compatibility with existing configurations
- Priority: ANTHROPIC_AUTH_TOKEN > ANTHROPIC_API_KEY

src-tauri/src/migration.rs

@@ -40,7 +40,10 @@ fn next_unique_id(existing: &HashSet<String>, base: &str) -> String {
 fn extract_claude_api_key(value: &Value) -> Option<String> {
     value
         .get("env")
-        .and_then(|env| env.get("ANTHROPIC_AUTH_TOKEN"))
+        .and_then(|env| {
+            env.get("ANTHROPIC_AUTH_TOKEN")
+                .or_else(|| env.get("ANTHROPIC_API_KEY"))
+        })
         .and_then(|v| v.as_str())
         .map(|s| s.to_string())
 }

src-tauri/src/services/provider.rs

@@ -1032,6 +1032,7 @@ impl ProviderService {
 
                 let api_key = env
                     .get("ANTHROPIC_AUTH_TOKEN")
+                    .or_else(|| env.get("ANTHROPIC_API_KEY"))
                     .and_then(|v| v.as_str())
                     .ok_or_else(|| {
                         AppError::localized(

src/config/claudeProviderPresets.ts

@@ -30,6 +30,8 @@ export interface ProviderPreset {
   settingsConfig: object;
   isOfficial?: boolean; // 标识是否为官方预设
   category?: ProviderCategory; // 新增：分类
+  // 新增：指定该预设所使用的 API Key 字段名（默认 ANTHROPIC_AUTH_TOKEN）
+  apiKeyField?: "ANTHROPIC_AUTH_TOKEN" | "ANTHROPIC_API_KEY";
   // 新增：模板变量定义，用于动态替换配置中的值
   templateValues?: Record<string, TemplateValueConfig>; // editorValue 存储编辑器中的实时输入值
   // 新增：请求地址候选列表（用于地址管理/测速）
@@ -53,6 +55,30 @@ export const providerPresets: ProviderPreset[] = [
       textColor: "#FFFFFF",
     },
   },
+  {
+    name: "AiHubMix",
+    websiteUrl: "https://aihubmix.com",
+    apiKeyUrl: "https://aihubmix.com",
+    // 说明：该供应商使用 ANTHROPIC_API_KEY（而非 ANTHROPIC_AUTH_TOKEN）
+    apiKeyField: "ANTHROPIC_API_KEY",
+    settingsConfig: {
+      env: {
+        ANTHROPIC_BASE_URL: "https://aihubmix.com",
+        ANTHROPIC_API_KEY: "",
+        // 可选的模型默认值（留空表示使用系统默认）
+        // ANTHROPIC_MODEL: "",
+        // ANTHROPIC_DEFAULT_HAIKU_MODEL: "",
+        // ANTHROPIC_DEFAULT_SONNET_MODEL: "",
+        // ANTHROPIC_DEFAULT_OPUS_MODEL: "",
+      },
+    },
+    // 请求地址候选（用于地址管理/测速），用户可自行选择/覆盖
+    endpointCandidates: [
+      "https://aihubmix.com",
+      "https://api.aihubmix.com",
+    ],
+    category: "cn_official",
+  },
   {
     name: "DeepSeek",
     websiteUrl: "https://platform.deepseek.com",

src/utils/providerConfigUtils.ts

@@ -164,12 +164,14 @@ export const hasCommonConfigSnippet = (
   }
 };
 
-// 读取配置中的 API Key（env.ANTHROPIC_AUTH_TOKEN）
+// 读取配置中的 API Key（优先 ANTHROPIC_AUTH_TOKEN，其次 ANTHROPIC_API_KEY）
 export const getApiKeyFromConfig = (jsonString: string): string => {
   try {
     const config = JSON.parse(jsonString);
-    const key = config?.env?.ANTHROPIC_AUTH_TOKEN;
-    return typeof key === "string" ? key : "";
+    const token = config?.env?.ANTHROPIC_AUTH_TOKEN;
+    const apiKey = config?.env?.ANTHROPIC_API_KEY;
+    const value = typeof token === "string" ? token : typeof apiKey === "string" ? apiKey : "";
+    return value;
   } catch (err) {
     return "";
   }
@@ -224,9 +226,10 @@ export const applyTemplateValues = (
 export const hasApiKeyField = (jsonString: string): boolean => {
   try {
     const config = JSON.parse(jsonString);
-    return Object.prototype.hasOwnProperty.call(
-      config?.env ?? {},
-      "ANTHROPIC_AUTH_TOKEN",
+    const env = config?.env ?? {};
+    return (
+      Object.prototype.hasOwnProperty.call(env, "ANTHROPIC_AUTH_TOKEN") ||
+      Object.prototype.hasOwnProperty.call(env, "ANTHROPIC_API_KEY")
     );
   } catch (err) {
     return false;
@@ -246,10 +249,17 @@ export const setApiKeyInConfig = (
       if (!createIfMissing) return jsonString;
       config.env = {};
     }
-    if (!("ANTHROPIC_AUTH_TOKEN" in config.env) && !createIfMissing) {
+    const env = config.env as Record<string, any>;
+    // 优先写入已存在的字段；若两者均不存在且允许创建，则默认创建 AUTH_TOKEN 字段
+    if ("ANTHROPIC_AUTH_TOKEN" in env) {
+      env.ANTHROPIC_AUTH_TOKEN = apiKey;
+    } else if ("ANTHROPIC_API_KEY" in env) {
+      env.ANTHROPIC_API_KEY = apiKey;
+    } else if (createIfMissing) {
+      env.ANTHROPIC_AUTH_TOKEN = apiKey;
+    } else {
       return jsonString;
     }
-    config.env.ANTHROPIC_AUTH_TOKEN = apiKey;
     return JSON.stringify(config, null, 2);
   } catch (err) {
     return jsonString;