fix: remove system prompt temporarily

Author: chilingling

packages/plugins/robot/src/mcp/utils.ts

@@ -2,9 +2,7 @@ import { toRaw } from 'vue'
 import useMcpServer from './useMcp'
 import type { LLMMessage, RobotMessage } from './types'
 import type { LLMRequestBody, LLMResponse, ReponseToolCall, RequestOptions, RequestTool } from './types'
-import { META_SERVICE, getMetaApi, getOptions } from '@opentiny/tiny-engine-meta-register'
-import systemPrompt from '../system-prompt.md?raw'
-import meta from '../../meta'
+import { META_SERVICE, getMetaApi } from '@opentiny/tiny-engine-meta-register'
 
 let requestOptions: RequestOptions = {}
 
@@ -33,48 +31,6 @@ const fetchLLM = async (messages: LLMMessage[], tools: RequestTool[], options: R
   })
 }
 
-// 计算当前生效的 system prompt（支持注册表覆盖与关闭）
-const getEffectiveSystemPrompt = (): { disabled: boolean; prompt?: string } => {
-  try {
-    const options = getOptions && typeof getOptions === 'function' ? getOptions((meta as any)?.id) : undefined
-    const disabled = options?.disableSystemPrompt === true
-    if (disabled) {
-      return { disabled: true }
-    }
-    const custom = options?.customSystemPrompt
-    const prompt = typeof custom === 'string' && custom.trim().length > 0 ? custom : systemPrompt
-    return { disabled: false, prompt }
-  } catch (_err) {
-    // 安全回退到内置 system prompt
-    return { disabled: false, prompt: systemPrompt }
-  }
-}
-
-// 确保 system prompt 仅注入一次，并作为首条历史消息（仅限 MCP 路径）
-const withSystemPromptOnce = (messages: LLMMessage[]): LLMMessage[] => {
-  const { disabled, prompt } = getEffectiveSystemPrompt()
-  if (disabled) {
-    return messages
-  }
-
-  // 正常情况下 prompt 一定存在；若异常则透传
-  if (!prompt) {
-    return messages
-  }
-
-  if (!messages.length) {
-    return [{ role: 'system', content: prompt }]
-  }
-  const first = messages[0]
-  if (first.role === 'system') {
-    // 若首条已为 system：
-    // - 与当前生效 prompt 全等：直接返回
-    // - 不等：尊重现有会话，不做热替换，避免双 system
-    return first.content === prompt ? messages : messages
-  }
-  return [{ role: 'system', content: prompt }, ...messages]
-}
-
 const parseArgs = (args: string) => {
   try {
     return JSON.parse(args)
@@ -155,12 +111,11 @@ const handleToolCall = async (
       }
     }
     currentMessage.renderContent.push({ type: 'loading', content: '' })
-    const preppedToolMessages = withSystemPromptOnce(toolMessages)
-    const newResp = await fetchLLM(preppedToolMessages, tools)
+    const newResp = await fetchLLM(toolMessages, tools)
     currentMessage.renderContent.pop()
     const hasToolCall = newResp.choices[0].message.tool_calls?.length > 0
     if (hasToolCall) {
-      await handleToolCall(newResp, tools, messages, preppedToolMessages)
+      await handleToolCall(newResp, tools, messages, toolMessages)
     } else {
       if (newResp.choices[0].message.content) {
         currentMessage.renderContent.push({
@@ -180,8 +135,7 @@ export const sendMcpRequest = async (messages: LLMMessage[], options: RequestOpt
   requestOptions = options
   messages.at(-1)!.renderContent = [{ type: 'loading', content: '' }]
   const historyRaw = toRaw(messages.slice(0, -1)) as LLMMessage[]
-  const requestMessages = withSystemPromptOnce(historyRaw)
-  const res = await fetchLLM(formatMessages(requestMessages), tools, options)
+  const res = await fetchLLM(formatMessages(historyRaw), tools, options)
   delete messages.at(-1)!.renderContent
   const hasToolCall = res.choices[0].message.tool_calls?.length > 0
   if (hasToolCall) {