feat(providerConfig): implement API key rotation logic for providers

- Added a new function to handle rotating API keys for providers, reusing legacy multi-key logic.
- Updated the providerToAiSdkConfig function to utilize the new key rotation mechanism.
- Enhanced TranslateService imports for better organization.

src/renderer/src/aiCore/provider/providerConfig.ts

@@ -23,6 +23,32 @@ import { getAiSdkProviderId } from './factory'
 
 const logger = loggerService.withContext('ProviderConfigProcessor')
 
+/**
+ * 获取轮询的API key
+ * 复用legacy架构的多key轮询逻辑
+ */
+function getRotatedApiKey(provider: Provider): string {
+  const keys = provider.apiKey.split(',').map((key) => key.trim())
+  const keyName = `provider:${provider.id}:last_used_key`
+
+  if (keys.length === 1) {
+    return keys[0]
+  }
+
+  const lastUsedKey = window.keyv.get(keyName)
+  if (!lastUsedKey) {
+    window.keyv.set(keyName, keys[0])
+    return keys[0]
+  }
+
+  const currentIndex = keys.indexOf(lastUsedKey)
+  const nextIndex = (currentIndex + 1) % keys.length
+  const nextKey = keys[nextIndex]
+  window.keyv.set(keyName, nextKey)
+
+  return nextKey
+}
+
 /**
  * 处理特殊provider的转换逻辑
  */
@@ -88,7 +114,7 @@ export function providerToAiSdkConfig(
   // 构建基础配置
   const baseConfig = {
     baseURL: actualProvider.apiHost,
-    apiKey: actualProvider.apiKey
+    apiKey: getRotatedApiKey(actualProvider)
   }
   // 处理OpenAI模式
   const extraOptions: any = {}

src/renderer/src/services/TranslateService.ts

@@ -1,13 +1,19 @@
 import { loggerService } from '@logger'
 import { db } from '@renderer/databases'
-import { CustomTranslateLanguage, TranslateHistory, TranslateLanguage, TranslateLanguageCode } from '@renderer/types'
+import {
+  CustomTranslateLanguage,
+  FetchChatCompletionOptions,
+  TranslateHistory,
+  TranslateLanguage,
+  TranslateLanguageCode
+} from '@renderer/types'
 import { Chunk, ChunkType } from '@renderer/types/chunk'
 import { uuid } from '@renderer/utils'
 import { readyToAbort } from '@renderer/utils/abortController'
 import { formatErrorMessage, isAbortError } from '@renderer/utils/error'
 import { t } from 'i18next'
 
-import { fetchChatCompletion, FetchChatCompletionOptions } from './ApiService'
+import { fetchChatCompletion } from './ApiService'
 import { getDefaultTranslateAssistant } from './AssistantService'
 
 const logger = loggerService.withContext('TranslateService')