refactor: remove obsolete support and fix response (#1382)

* refactor: remove obsolete MCP UI support

* fix(openai): serialize assistant history

* chore: update openai deps

Author: zerob13

docs/specs/new-agent/v2-spec.md

@@ -3,6 +3,7 @@
 ## Status: Complete (superseded by v3 refactor)
 
 > The v2 implementation has been refactored into the v3 module structure. See `v3-spec.md` for the current architecture. This spec is retained for historical context on design decisions.
+> Note: the historical MCP UI resource exploration mentioned below is no longer supported in the current codebase.
 
 ## Overview
 
@@ -22,7 +23,6 @@ v0 proved single-turn chat, v1 added multi-turn context assembly. The LLM curren
 - Question tool — halting the loop for user input
 - ACP agent tool routing — ACP handles tools internally
 - Search result extraction from tool responses
-- MCP UI resources extraction
 - Tool system prompt injection (`ToolPresenter.buildToolSystemPrompt`)
 
 ## Data Model

docs/specs/tool-output-guardrails/spec.md

@@ -22,7 +22,7 @@
 ## 非目标
 
 - 不改动或替换 `agentPresenter/tool` 下的 `ToolRegistry`/`toolRouter`.
-- 不改变 MCP UI 资源与搜索结果的解析逻辑.
+- 不改变搜索结果的解析逻辑.
 - 不改 legacy `AgentPresenter` 链路, 本次仅覆盖新 session agent.
 
 ## 用户故事
@@ -60,7 +60,7 @@
   - 完整文件的绝对路径
 - 模型可以通过文件类工具读取上述路径.
 - 文件类读取工具仅放行当前会话 `conversationId` 对应目录.
-- `tool_call_response_raw` 不被改写, 避免影响 MCP UI/搜索结果处理.
+- `tool_call_response_raw` 不被改写, 避免影响搜索结果处理.
 
 ### 同轮批量尾部降级
 

package.json

@@ -94,7 +94,7 @@
     "nanoid": "^5.1.6",
     "node-pty": "^1.1.0",
     "ollama": "^0.5.18",
-    "openai": "^5.23.2",
+    "openai": "^6.32.0",
     "pdf-parse-new": "^1.4.1",
     "run-applescript": "^7.1.0",
     "safe-regex2": "^5.0.0",
@@ -114,7 +114,6 @@
     "@iconify-json/vscode-icons": "^1.2.37",
     "@iconify/vue": "^5.0.0",
     "@lingual/i18n-check": "0.8.12",
-    "@mcp-ui/client": "^5.13.3",
     "@pinia/colada": "^0.20.0",
     "@tailwindcss/typography": "^0.5.19",
     "@tailwindcss/vite": "^4.1.18",

src/main/presenter/exporter/formats/conversationExporter.ts

@@ -228,16 +228,6 @@ function exportToMarkdown(conversation: CONVERSATION, messages: Message[]): stri
             }
             lines.push('')
             break
-          case 'mcp_ui_resource':
-            if (block.mcp_ui_resource) {
-              lines.push('### 🧩 MCP UI 资源')
-              lines.push('')
-              lines.push(
-                `资源: ${block.mcp_ui_resource.uri} (${block.mcp_ui_resource.mimeType ?? ''})`
-              )
-              lines.push('')
-            }
-            break
           case 'image':
             lines.push('### 🖼️ 图片')
             lines.push('*[图片内容]*')
@@ -458,17 +448,6 @@ function exportToHtml(conversation: CONVERSATION, messages: Message[]): string {
               })
             )
             break
-          case 'mcp_ui_resource':
-            if (block.mcp_ui_resource) {
-              blockLines.push(
-                ...renderTemplate(templates.assistantContent, {
-                  content: formatInlineHtml(
-                    `MCP UI 资源: ${block.mcp_ui_resource.uri} (${block.mcp_ui_resource.mimeType ?? ''})`
-                  )
-                })
-              )
-            }
-            break
           case 'image':
             blockLines.push(...renderTemplate(templates.assistantImage))
             break
@@ -645,13 +624,6 @@ function exportToText(conversation: CONVERSATION, messages: Message[]): string {
             }
             lines.push('')
             break
-          case 'mcp_ui_resource':
-            if (block.mcp_ui_resource) {
-              lines.push('[MCP UI 资源]')
-              lines.push(`${block.mcp_ui_resource.uri} (${block.mcp_ui_resource.mimeType ?? ''})`)
-              lines.push('')
-            }
-            break
           case 'image':
             lines.push('[图片内容]')
             lines.push('')

src/main/presenter/exporter/formats/nowledgeMemExporter.ts

@@ -120,12 +120,6 @@ export function convertDeepChatToNowledgeMemFormat(
             content += '[Image Content]\n'
             break
 
-          case 'mcp_ui_resource':
-            if (block.mcp_ui_resource) {
-              content += `[MCP Resource] ${block.mcp_ui_resource.uri}\n`
-            }
-            break
-
           case 'error':
             if (block.content) {
               content += `[Error] ${block.content}\n`

src/main/presenter/llmProviderPresenter/providers/openAIResponsesProvider.ts

@@ -220,6 +220,20 @@ export class OpenAIResponsesProvider extends BaseLLMProvider {
         continue
       }
 
+      if (msg.role === 'assistant') {
+        const assistantContent = this.flattenAssistantContent(msg.content)
+        if (!assistantContent) {
+          continue
+        }
+
+        // Responses API assistant history does not accept input_text content parts.
+        result.push({
+          role: 'assistant',
+          content: assistantContent
+        })
+        continue
+      }
+
       const content: OpenAI.Responses.ResponseInputMessageContentList = []
 
       if (msg.content !== undefined) {
@@ -256,6 +270,25 @@ export class OpenAIResponsesProvider extends BaseLLMProvider {
     return result
   }
 
+  private flattenAssistantContent(content: ChatMessage['content']): string | null {
+    if (typeof content === 'string') {
+      return content.length > 0 ? content : null
+    }
+
+    if (!Array.isArray(content)) {
+      return null
+    }
+
+    const textContent = content.reduce((result, part) => {
+      if (part.type !== 'text' || part.text.length === 0) {
+        return result
+      }
+      return `${result}${part.text}`
+    }, '')
+
+    return textContent.length > 0 ? textContent : null
+  }
+
   // OpenAI完成方法
   protected async openAICompletion(
     messages: ChatMessage[],

src/renderer/src/components/chat/messageListItems.ts

@@ -84,7 +84,6 @@ export type DisplayAssistantMessageBlock = {
     | 'image'
     | 'audio'
     | 'artifact-thinking'
-    | 'mcp_ui_resource'
   id?: string
   content?: string
   extra?: DisplayAssistantMessageExtra
@@ -111,13 +110,6 @@ export type DisplayAssistantMessageBlock = {
       | 'application/vnd.ant.react'
     language?: string
   }
-  mcp_ui_resource?: {
-    uri: string
-    mimeType: 'text/html' | 'text/uri-list' | 'application/vnd.mcp-ui.remote-dom'
-    text?: string
-    blob?: string
-    _meta?: Record<string, unknown>
-  }
   tool_call?: {
     id?: string
     name?: string

src/renderer/src/components/message/MessageBlockMcpUi.vue

@@ -69,12 +69,6 @@
                 @continue="handleBlockContinue"
                 @switch-provider="handleBlockSwitchProvider"
               />
-              <MessageBlockMcpUi
-                v-else-if="block.type === 'mcp_ui_resource'"
-                :block="block"
-                :message-id="currentMessage.id"
-                :thread-id="currentThreadId"
-              />
               <MessageBlockAudio
                 v-else-if="isAudioBlock(block)"
                 :block="block"
@@ -187,7 +181,6 @@ import MessageBlockAction from './MessageBlockAction.vue'
 import { useI18n } from 'vue-i18n'
 import MessageBlockImage from './MessageBlockImage.vue'
 import MessageBlockAudio from './MessageBlockAudio.vue'
-import MessageBlockMcpUi from './MessageBlockMcpUi.vue'
 import MessageBlockPlan from './MessageBlockPlan.vue'
 
 import {