fix: add proper typing to e2e test file

- Import Server type from MCP SDK
- Fix untyped servers array in e2e tests
- Resolves ESLint unsafe any type errors in tests

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Agent Communication MCP Server

.serena/cache/typescript/document_symbols_cache_v23-06-25.pkl

@@ -5,6 +5,7 @@
 
 import { createMCPServer } from '../../src/index.js';
 import { TestEnvironment } from '../shared/race-condition-helpers.js';
+import type { Server } from '@modelcontextprotocol/sdk/server/index.js';
 
 describe('E2E - Complete Workflow Tests', () => {
   let testEnv: TestEnvironment;
@@ -76,7 +77,7 @@ describe('E2E - Complete Workflow Tests', () => {
 
   describe('Performance and Scale', () => {
     it('should handle rapid server creation/destruction', () => {
-      const servers = [];
+      const servers: Server[] = [];
 
       // Create multiple servers quickly
       for (let i = 0; i < 5; i++) {