Merge pull request #542 from dhodun/dhodun/add-streamable-http-comments

docs: Add clarifying comments for stateless streamable HTTP endpoints

Author: ihrpr

README.md

@@ -555,6 +555,7 @@ app.post('/mcp', async (req: Request, res: Response) => {
   }
 });
 
+// SSE notifications not supported in stateless mode
 app.get('/mcp', async (req: Request, res: Response) => {
   console.log('Received GET MCP request');
   res.writeHead(405).end(JSON.stringify({
@@ -567,6 +568,7 @@ app.get('/mcp', async (req: Request, res: Response) => {
   }));
 });
 
+// Session termination not needed in stateless mode
 app.delete('/mcp', async (req: Request, res: Response) => {
   console.log('Received DELETE MCP request');
   res.writeHead(405).end(JSON.stringify({