Add SSE transport support to cortex-desktop-mcp

[ry-ops]

Summary

The cortex-desktop-mcp needs SSE transport support to work with Claude Desktop via mcp-remote.

Current State

• Server type: Custom container image (10.43.170.72:5000/cortex-desktop-mcp:latest)
• Transport: Reports transport: sse in health endpoint but /sse returns error
• SSE Status: ❌ Not working

Investigation Needed

1. Check existing SSE implementation in container
2. Determine if it's a routing issue or missing implementation
3. Fix or implement SSE endpoint

Requirements

1. Working /sse endpoint that establishes SSE connection
2. Send event: endpoint with session-specific message URL
3. Add /message?sessionId= POST endpoint
4. Stream MCP responses back via SSE

Infrastructure Ready

• Ingress: https://cortex-desktop-mcp.ry-ops.dev ✅
• TLS Certificate: Ready ✅
• DNS: Configured ✅

Reference

See MCP-SSE-Implementation-Tasks.md in cortex-gitops for implementation pattern.