Fix SSE endpoint and improve server deployment

- Enhanced SSE endpoint with better error handling and logging
- Added comprehensive API info endpoint
- Improved server startup logging with all endpoints
- Updated Dockerfile to use SSE transport by default
- Added debug script for SSE connection troubleshooting
- Server now binds to 0.0.0.0 for better container compatibility

debug-sse.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+# Debug script for SSE connection issues
+
+SERVER_URL=${1:-"http://localhost:3000"}
+
+echo "🔍 Debugging SSE connection to: $SERVER_URL"
+echo "================================================"
+
+# Test basic connectivity
+echo "1. Testing basic connectivity..."
+if curl -f "$SERVER_URL/health" > /dev/null 2>&1; then
+    echo "✅ Server is reachable"
+    curl -s "$SERVER_URL/health" | jq '.' 2>/dev/null || curl -s "$SERVER_URL/health"
+else
+    echo "❌ Server is not reachable at $SERVER_URL"
+    exit 1
+fi
+
+echo ""
+
+# Test API info endpoint
+echo "2. Testing API info endpoint..."
+if curl -f "$SERVER_URL/api/info" > /dev/null 2>&1; then
+    echo "✅ API info endpoint is working"
+    curl -s "$SERVER_URL/api/info" | jq '.' 2>/dev/null || curl -s "$SERVER_URL/api/info"
+else
+    echo "❌ API info endpoint is not working"
+fi
+
+echo ""
+
+# Test SSE endpoint
+echo "3. Testing SSE endpoint..."
+echo "Attempting to connect to SSE endpoint (will timeout after 5 seconds)..."
+
+timeout 5s curl -N -H "Accept: text/event-stream" -H "Cache-Control: no-cache" "$SERVER_URL/sse" 2>&1 | head -10
+
+echo ""
+echo "4. Testing SSE endpoint with verbose output..."
+curl -v -N -H "Accept: text/event-stream" -H "Cache-Control: no-cache" "$SERVER_URL/sse" 2>&1 | head -20
+
+echo ""
+echo "================================================"
+echo "🔍 Debug complete!"
+echo ""
+echo "If you see 404 errors, check:"
+echo "1. Server is running in HTTP/SSE mode (not stdio)"
+echo "2. Server is listening on the correct port"
+echo "3. No reverse proxy is interfering"
+echo "4. Firewall allows the connection"
+echo ""
+echo "Expected SSE response should include:"
+echo "- HTTP 200 status"
+echo "- Content-Type: text/event-stream"
+echo "- Connection: keep-alive"