feat: introduce MCP Prompt Plugin and refactor built-in plugin structure

- Added `mcpPromptPlugin.ts` to encapsulate MCP Prompt functionality, providing a structured approach for tool calls within prompts.
- Updated `index.ts` to reference the new `mcpPromptPlugin`, enhancing modularity and clarity in the built-in plugins.
- Removed the outdated `example-plugins.ts` file to streamline the plugin directory and focus on essential components.

packages/aiCore/src/core/plugins/built-in/index.ts

@@ -5,5 +5,5 @@
 export const BUILT_IN_PLUGIN_PREFIX = 'built-in:'
 
 export { createLoggingPlugin } from './logging'
-export type { MCPPromptConfig, ToolUseResult } from './mcpPrompt'
-export { createMCPPromptPlugin } from './mcpPrompt'
+export type { MCPPromptConfig, ToolUseResult } from './mcpPromptPlugin'
+export { createMCPPromptPlugin } from './mcpPromptPlugin'

packages/aiCore/src/core/plugins/built-in/mcpPromptPlugin.ts

@@ -286,10 +286,10 @@ function defaultParseToolUse(content: string, tools: ToolSet): ToolUseResult[] {
 /**
  * 创建 MCP Prompt 插件
  */
-export const createMCPPromptPlugin = definePlugin((config: MCPPromptConfig = {}) => {
+export const createMCPPromptPlugin = (config: MCPPromptConfig = {}) => {
   const { enabled = true, buildSystemPrompt = defaultBuildSystemPrompt, parseToolUse = defaultParseToolUse } = config
 
-  return {
+  return definePlugin({
     name: 'built-in:mcp-prompt',
 
     transformParams: async (params: any, context: MCPRequestContext) => {
@@ -562,5 +562,5 @@ export const createMCPPromptPlugin = definePlugin((config: MCPPromptConfig = {})
         }
       })
     }
-  }
-})
+  })
+}

packages/aiCore/src/core/plugins/examples/example-plugins.ts

@@ -1,192 +0,0 @@
-import type { AiPlugin } from '../types'
-
-/**
- * 【First 钩子示例】模型别名解析插件
- */
-export const ModelAliasPlugin: AiPlugin = {
-  name: 'model-alias',
-  enforce: 'pre',
-
-  async resolveModel(modelId) {
-    const aliases: Record<string, string> = {
-      gpt4: 'gpt-4-turbo-preview',
-      claude: 'claude-3-sonnet-20240229',
-      gemini: 'gemini-pro'
-    }
-
-    return aliases[modelId] || null
-  }
-}
-
-/**
- * 【Sequential 钩子示例】参数验证和转换插件
- */
-export const ParamsValidationPlugin: AiPlugin = {
-  name: 'params-validation',
-
-  async transformParams(params) {
-    // 参数验证
-    if (!params.messages || !Array.isArray(params.messages)) {
-      throw new Error('Invalid messages parameter')
-    }
-
-    // 参数转换：添加默认配置
-    return {
-      ...params,
-      temperature: params.temperature ?? 0.7,
-      max_tokens: params.max_tokens ?? 4096,
-      stream: params.stream ?? true
-    }
-  },
-
-  async transformResult(result, context) {
-    // 结果后处理：添加元数据
-    return {
-      ...result,
-      metadata: {
-        ...result.metadata,
-        processedAt: new Date().toISOString(),
-        provider: context.providerId,
-        model: context.modelId
-      }
-    }
-  }
-}
-
-/**
- * 【Parallel 钩子示例】日志记录插件
- */
-export const LoggingPlugin: AiPlugin = {
-  name: 'logging',
-
-  async onRequestStart(context) {
-    console.log(`🚀 AI请求开始: ${context.providerId}/${context.modelId}`, {
-      requestId: context.requestId,
-      timestamp: new Date().toISOString()
-    })
-  },
-
-  async onRequestEnd(context, result) {
-    const duration = Date.now() - context.startTime
-    console.log(`✅ AI请求完成: ${context.requestId} (${duration}ms)`, {
-      provider: context.providerId,
-      model: context.modelId,
-      hasResult: !!result
-    })
-  },
-
-  async onError(error, context) {
-    const duration = Date.now() - context.startTime
-    console.error(`❌ AI请求失败: ${context.requestId} (${duration}ms)`, {
-      provider: context.providerId,
-      model: context.modelId,
-      error: error.message,
-      stack: error.stack
-    })
-  }
-}
-
-/**
- * 【Parallel 钩子示例】性能监控插件
- */
-export const PerformancePlugin: AiPlugin = {
-  name: 'performance',
-  enforce: 'post',
-
-  async onRequestEnd(context) {
-    const duration = Date.now() - context.startTime
-
-    // 记录性能指标
-    const metrics = {
-      requestId: context.requestId,
-      provider: context.providerId,
-      model: context.modelId,
-      duration,
-      timestamp: context.startTime,
-      success: true
-    }
-
-    // 发送到监控系统（这里只是示例）
-    // await sendMetrics(metrics)
-    console.log('📊 性能指标:', metrics)
-  },
-
-  async onError(error, context) {
-    const duration = Date.now() - context.startTime
-
-    const metrics = {
-      requestId: context.requestId,
-      provider: context.providerId,
-      model: context.modelId,
-      duration,
-      timestamp: context.startTime,
-      success: false,
-      errorType: error.constructor.name
-    }
-
-    console.log('📊 错误指标:', metrics)
-  }
-}
-
-/**
- * 【Stream 钩子示例】内容过滤插件
- */
-export const ContentFilterPlugin: AiPlugin = {
-  name: 'content-filter',
-
-  transformStream() {
-    return () =>
-      new TransformStream({
-        transform(chunk, controller) {
-          // 过滤敏感内容
-          if (chunk.type === 'text-delta') {
-            const filtered = chunk.textDelta.replace(/\b(敏感词|违禁词)\b/g, '***')
-            controller.enqueue({
-              ...chunk,
-              textDelta: filtered
-            })
-          } else {
-            controller.enqueue(chunk)
-          }
-        }
-      })
-  }
-}
-
-/**
- * 【First 钩子示例】模板加载插件
- */
-export const TemplatePlugin: AiPlugin = {
-  name: 'template-loader',
-
-  async loadTemplate(templateName) {
-    const templates: Record<string, any> = {
-      chat: {
-        systemPrompt: '你是一个有用的AI助手',
-        temperature: 0.7
-      },
-      coding: {
-        systemPrompt: '你是一个专业的编程助手，请提供清晰、高质量的代码',
-        temperature: 0.3
-      },
-      creative: {
-        systemPrompt: '你是一个创意写作助手，请发挥想象力',
-        temperature: 0.9
-      }
-    }
-
-    return templates[templateName] || null
-  }
-}
-
-/**
- * 示例插件组合
- */
-export const defaultPlugins: AiPlugin[] = [
-  ModelAliasPlugin,
-  TemplatePlugin,
-  ParamsValidationPlugin,
-  LoggingPlugin,
-  PerformancePlugin,
-  ContentFilterPlugin
-]