AWS MCP deployment solution incompatible with standard MCP clients due to mandatory Cognito authentication

## Expected Behavior
The AWS MCP deployment solution should provide options for both secure (Cognito) and standard (no-auth/simple-auth) deployments to ensure compatibility with the broader MCP ecosystem while still supporting enterprise security requirements.

## Actual Behavior
The AWS MCP deployment solution (https://aws.amazon.com/solutions/guidance/deploying-model-context-protocol-servers-on-aws/) requires Cognito authentication, making it incompatible with standard MCP clients including:
- VS Code MCP extensions
- Cursor MCP integration
- Claude Desktop MCP
- Q CLI MCP (mcp-remote)

This severely limits adoption and integration with the existing MCP ecosystem.

## Steps to Reproduce
1. Deploy MCP server using AWS Solutions Guidance
2. Try to connect with any standard MCP client (VS Code extension, Cursor, Claude Desktop, Q CLI)
3. All connections fail due to authentication requirements
4. Only custom clients with Cognito implementation work

## Impact
- Limits practical adoption of AWS MCP deployment solution
- Creates barrier between AWS solution and MCP ecosystem
- Forces developers to choose between security and compatibility

## Suggested Solutions
1. **Optional authentication** - allow deployment with/without Cognito
2. **Include auth proxy** - provide local proxy for standard clients
3. **Multiple deployment modes** - enterprise vs. developer-friendly variants
4. **Better documentation** - clearly state compatibility limitations

## Related
This affects the core value proposition of the AWS MCP deployment solution by making it incompatible with the tools developers actually use.

Inizia esaminando il link AWS Solutions Guidance nell’issue e riproduci le connessioni di deployment con VS Code, Cursor, Claude Desktop o Q CLI. Il lavoro è completato quando il deployment offre una modalità Cognito-secured documentata e una modalità no-auth o simple-auth compatibile, con il comportamento dei client supportati indicato chiaramente.

Scritto dal modello di indicizzazione a partire dal testo della issue.