Remove global SIGINT event listener from YepCodeMcpServer

This was a bad practice causing potential memory leaks as the global process event listener wasn't properly cleaned up when the server instance was destroyed. Event listeners should be managed at the appropriate lifecycle level.

Author: agtraveso

src/server.ts

@@ -99,12 +99,6 @@ class YepCodeMcpServer extends Server {
     this.onerror = (error) => {
       this.logger.error("[MCP Error]", error);
     };
-
-    process.on("SIGINT", async () => {
-      this.logger.info("Received SIGINT, shutting down");
-      await this.close();
-      process.exit(0);
-    });
   }
 
   private setupHandlers(): void {