feat(MCPService, ModelSettings): Enhance path handling and model filtering

- Add enhanced PATH generation for MCP service across different platforms
- Improve model filtering with new function calling model type
- Refactor MCP service type definitions and transport initialization
- Add platform-specific path handling for various development environments

src/main/services/MCPService.ts

@@ -1,3 +1,7 @@
+import { isLinux, isMac, isWin } from '@main/constant'
+import type { Client } from '@modelcontextprotocol/sdk/client/index.js'
+import type { SSEClientTransport } from '@modelcontextprotocol/sdk/client/sse.js'
+import type { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js'
 import { MCPServer, MCPTool } from '@types'
 import log from 'electron-log'
 import { EventEmitter } from 'events'
@@ -12,9 +16,9 @@ export default class MCPService extends EventEmitter {
   private servers: MCPServer[] = []
   private activeServers: Map<string, any> = new Map()
   private clients: { [key: string]: any } = {}
-  private Client: any
+  private Client: typeof Client | undefined
-  private stoioTransport: any
+  private stdioTransport: typeof StdioClientTransport | undefined
-  private sseTransport: any
+  private sseTransport: typeof SSEClientTransport | undefined
   private initialized = false
   private initPromise: Promise<void> | null = null
 
@@ -84,7 +88,7 @@ export default class MCPService extends EventEmitter {
         ])
 
         this.Client = Client
-        this.stoioTransport = StdioTransport
+        this.stdioTransport = StdioTransport
         this.sseTransport = SSETransport
 
         // Mark as initialized before loading servers
@@ -295,35 +299,33 @@ export default class MCPService extends EventEmitter {
       return
     }
 
-    let transport: any = null
+    let transport: StdioClientTransport | SSEClientTransport
 
     try {
       // Create appropriate transport based on configuration
       if (baseUrl) {
-        transport = new this.sseTransport(new URL(baseUrl))
+        transport = new this.sseTransport!(new URL(baseUrl))
       } else if (command) {
         let cmd: string = command
         if (command === 'npx') {
           cmd = process.platform === 'win32' ? `${command}.cmd` : command
         }
 
-        const mergedEnv = {
+        transport = new this.stdioTransport!({
-          ...env,
-          PATH: process.env.PATH
-        }
-
-        transport = new this.stoioTransport({
           command: cmd,
           args,
-          stderr: process.platform === 'win32' ? 'pipe' : 'inherit',
+          stderr: 'pipe',
-          env: mergedEnv
+          env: {
+            PATH: this.getEnhancedPath(process.env.PATH || ''),
+            ...env
+          }
         })
       } else {
         throw new Error('Either baseUrl or command must be provided')
       }
 
       // Create and connect client
-      const client = new this.Client({ name, version: '1.0.0' }, { capabilities: {} })
+      const client = new this.Client!({ name, version: '1.0.0' }, { capabilities: {} })
 
       await client.connect(transport)
 
@@ -491,4 +493,61 @@ export default class MCPService extends EventEmitter {
 
     log.info(`[MCP] Loaded and activated ${Object.keys(this.clients).length} servers`)
   }
+
+  /**
+   * Get enhanced PATH including common tool locations
+   */
+  private getEnhancedPath(originalPath: string): string {
+    // 将原始 PATH 按分隔符分割成数组
+    const pathSeparator = process.platform === 'win32' ? ';' : ':'
+    const existingPaths = new Set(originalPath.split(pathSeparator).filter(Boolean))
+    const homeDir = process.env.HOME || process.env.USERPROFILE || ''
+
+    // 定义要添加的新路径
+    const newPaths: string[] = []
+
+    if (isMac) {
+      newPaths.push(
+        '/bin',
+        '/usr/bin',
+        '/usr/local/bin',
+        '/usr/local/sbin',
+        '/opt/homebrew/bin',
+        '/opt/homebrew/sbin',
+        '/usr/local/opt/node/bin',
+        `${homeDir}/.nvm/current/bin`,
+        `${homeDir}/.npm-global/bin`,
+        `${homeDir}/.yarn/bin`,
+        `${homeDir}/.cargo/bin`,
+        '/opt/local/bin'
+      )
+    }
+
+    if (isLinux) {
+      newPaths.push(
+        '/bin',
+        '/usr/bin',
+        '/usr/local/bin',
+        `${homeDir}/.nvm/current/bin`,
+        `${homeDir}/.npm-global/bin`,
+        `${homeDir}/.yarn/bin`,
+        `${homeDir}/.cargo/bin`,
+        '/snap/bin'
+      )
+    }
+
+    if (isWin) {
+      newPaths.push(`${process.env.APPDATA}\\npm`, `${homeDir}\\AppData\\Local\\Yarn\\bin`, `${homeDir}\\.cargo\\bin`)
+    }
+
+    // 只添加不存在的路径
+    newPaths.forEach((path) => {
+      if (path && !existingPaths.has(path)) {
+        existingPaths.add(path)
+      }
+    })
+
+    // 转换回字符串
+    return Array.from(existingPaths).join(pathSeparator)
+  }
 }

src/renderer/src/pages/settings/ProviderSettings/EditModelsPopup.tsx

@@ -4,6 +4,7 @@ import ModelTags from '@renderer/components/ModelTags'
 import {
   getModelLogo,
   isEmbeddingModel,
+  isFunctionCallingModel,
   isReasoningModel,
   isVisionModel,
   isWebSearchModel,
@@ -55,6 +56,7 @@ const PopupContainer: React.FC<Props> = ({ provider: _provider, resolve }) => {
     ) {
       return false
     }
+
     switch (filterType) {
       case 'reasoning':
         return isReasoningModel(model)
@@ -66,6 +68,8 @@ const PopupContainer: React.FC<Props> = ({ provider: _provider, resolve }) => {
         return isFreeModel(model)
       case 'embedding':
         return isEmbeddingModel(model)
+      case 'function_calling':
+        return isFunctionCallingModel(model)
       default:
         return true
     }
@@ -159,6 +163,7 @@ const PopupContainer: React.FC<Props> = ({ provider: _provider, resolve }) => {
             <Radio.Button value="websearch">{t('models.websearch')}</Radio.Button>
             <Radio.Button value="free">{t('models.free')}</Radio.Button>
             <Radio.Button value="embedding">{t('models.embedding')}</Radio.Button>
+            <Radio.Button value="function_calling">{t('models.function_calling')}</Radio.Button>
           </Radio.Group>
         </Center>
         <Search

src/renderer/src/pages/settings/ProviderSettings/ModelEditContent.tsx

@@ -113,7 +113,7 @@ const ModelEditContent: FC<ModelEditContentProps> = ({ model, onUpdateModel, ope
                 ...(isVisionModel(model) ? ['vision'] : []),
                 ...(isEmbeddingModel(model) ? ['embedding'] : []),
                 ...(isReasoningModel(model) ? ['reasoning'] : []),
-                ...(isFunctionCallingModel(model) ? ['tools'] : [])
+                ...(isFunctionCallingModel(model) ? ['function_calling'] : [])
               ] as ModelType[]
 
               // 合并现有选择和默认类型