feat: add reasoning_details support

src/renderer/src/aiCore/chunk/AiSdkToChunkAdapter.ts

@@ -84,7 +84,8 @@ export class AiSdkToChunkAdapter {
       text: '',
       reasoningContent: '',
       webSearchResults: [],
-      reasoningId: ''
+      reasoningId: '',
+      reasoningDetails: [] as any[]
     }
     this.resetTimingState()
     this.responseStartTimestamp = Date.now()
@@ -141,7 +142,13 @@ export class AiSdkToChunkAdapter {
    */
   private convertAndEmitChunk(
     chunk: TextStreamPart<any>,
-    final: { text: string; reasoningContent: string; webSearchResults: AISDKWebSearchResult[]; reasoningId: string }
+    final: {
+      text: string
+      reasoningContent: string
+      webSearchResults: AISDKWebSearchResult[]
+      reasoningId: string
+      reasoningDetails: any[]
+    }
   ) {
     logger.silly(`AI SDK chunk type: ${chunk.type}`, chunk)
     switch (chunk.type) {
@@ -281,6 +288,11 @@ export class AiSdkToChunkAdapter {
 
       case 'finish-step': {
         const { providerMetadata, finishReason } = chunk
+        // Capture reasoning_details from OpenRouter providerMetadata
+        const openrouterMeta = providerMetadata?.openrouter as Record<string, any> | undefined
+        if (openrouterMeta?.reasoning_details && Array.isArray(openrouterMeta.reasoning_details)) {
+          final.reasoningDetails = openrouterMeta.reasoning_details
+        }
         // googel web search
         if (providerMetadata?.google?.groundingMetadata) {
           this.onChunk({
@@ -351,7 +363,8 @@ export class AiSdkToChunkAdapter {
         const metrics = this.buildMetrics(chunk.totalUsage)
         const baseResponse = {
           text: final.text || '',
-          reasoning_content: final.reasoningContent || ''
+          reasoning_content: final.reasoningContent || '',
+          reasoning_details: final.reasoningDetails.length > 0 ? final.reasoningDetails : undefined
         }
 
         this.onChunk({

src/renderer/src/aiCore/prepareParams/messageConverter.ts

@@ -3,7 +3,7 @@
  * 将 Cherry Studio 消息格式转换为 AI SDK 消息格式
  */
 
-import type { ReasoningPart } from '@ai-sdk/provider-utils'
+import type { ProviderOptions, ReasoningPart } from '@ai-sdk/provider-utils'
 import { loggerService } from '@logger'
 import { isImageEnhancementModel, isVisionModel } from '@renderer/config/models'
 import type { Message, Model } from '@renderer/types'
@@ -45,7 +45,7 @@ export async function convertMessageToSdkParam(
   if (message.role === 'user' || message.role === 'system') {
     return convertMessageToUserModelMessage(content, fileBlocks, imageBlocks, isVisionModel, model)
   } else {
-    return convertMessageToAssistantModelMessage(content, fileBlocks, imageBlocks, reasoningBlocks, model)
+    return convertMessageToAssistantModelMessage(content, fileBlocks, imageBlocks, reasoningBlocks, model, message)
   }
 }
 
@@ -163,10 +163,14 @@ async function convertMessageToAssistantModelMessage(
   fileBlocks: FileMessageBlock[],
   imageBlocks: ImageMessageBlock[],
   thinkingBlocks: ThinkingMessageBlock[],
-  model?: Model
+  model?: Model,
+  message?: Message
 ): Promise<AssistantModelMessage> {
   const parts: Array<TextPart | ReasoningPart | FilePart> = []
 
+  // Extract reasoning_details directly from the message (stored at the same level as content)
+  const reasoningDetails = message?.reasoning_details
+
   // Add reasoning blocks first (required by AWS Bedrock for Claude extended thinking)
   for (const thinkingBlock of thinkingBlocks) {
     parts.push({ type: 'reasoning', text: thinkingBlock.content })
@@ -201,9 +205,19 @@ async function convertMessageToAssistantModelMessage(
     parts.push({ type: 'text', text: '[Image]' })
   }
 
+  // If reasoning_details exists from OpenRouter, pass it via providerOptions.
+  // The OpenRouter SDK reads from providerOptions.openrouter.reasoning_details
+  // and flattens it to reasoning_details at the same level as content in the API request,
+  // enabling models like Claude/Gemini to resume encrypted reasoning.
+  // Note: JSON round-trip strips undefined values that would fail AI SDK's Zod validation.
+  const providerOptions: ProviderOptions | undefined = reasoningDetails?.length
+    ? { openrouter: { reasoning_details: JSON.parse(JSON.stringify(reasoningDetails)) } }
+    : undefined
+
   return {
     role: 'assistant',
-    content: parts
+    content: parts,
+    ...(providerOptions ? { providerOptions } : {})
   }
 }
 

src/renderer/src/services/messageStreaming/callbacks/baseCallbacks.ts

@@ -247,7 +247,14 @@ export const createBaseCallbacks = (deps: BaseCallbacksDependencies) => {
         }
       }
 
-      const messageUpdates = { status, metrics: response?.metrics, usage: response?.usage }
+      const messageUpdates = {
+        status,
+        metrics: response?.metrics,
+        usage: response?.usage,
+        // Store reasoning_details directly on the message for subsequent requests.
+        // When present, this allows models like Claude/Gemini to resume encrypted reasoning.
+        ...(response?.reasoning_details ? { reasoning_details: response.reasoning_details } : {})
+      }
       dispatch(
         newMessagesActions.updateMessage({
           topicId,

src/renderer/src/types/newMessage.ts

@@ -205,6 +205,14 @@ export type Message = {
   usage?: Usage
   metrics?: Metrics
 
+  /**
+   * Raw reasoning details from OpenRouter.
+   * When present, this should be saved and sent back in subsequent requests
+   * to allow models like Claude/Gemini to correctly resume encrypted reasoning.
+   * Has higher priority than other reasoning fields.
+   */
+  reasoning_details?: any[]
+
   // UI相关
   multiModelMessageStyle?: 'horizontal' | 'vertical' | 'fold' | 'grid'
   foldSelected?: boolean
@@ -226,6 +234,13 @@ export type Message = {
 export interface Response {
   text?: string
   reasoning_content?: string
+  /**
+   * Raw reasoning details from OpenRouter.
+   * When present, this should be saved and sent back in subsequent requests
+   * to allow models like Claude/Gemini to correctly resume encrypted reasoning.
+   * Has higher priority than other reasoning fields.
+   */
+  reasoning_details?: any[]
   usage?: Usage
   metrics?: Metrics
   webSearch?: WebSearchResponse