Fix Redis transport refactoring with control message system

- Fix timing issue by awaiting startServerListeningToRedis
- Add request-id based response channel routing
- Implement control message system for proper server shutdown
- Add comprehensive integration tests
- Ensure response subscription is established before message sending
- Fix MCP server cleanup integration to prevent async hanging

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

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

src/services/mcp.ts

@@ -95,7 +95,12 @@ enum PromptName {
   RESOURCE = "resource_prompt",
 }
 
-export const createMcpServer = () => {
+interface McpServerWrapper {
+  server: Server;
+  cleanup: () => void;
+}
+
+export const createMcpServer = (): McpServerWrapper => {
   const server = new Server(
     {
       name: "example-servers/everything",