feat: Add presence heartbeat for Matrix online status

- matrix-gateway: POST /internal/matrix/presence/online endpoint
- usePresenceHeartbeat hook with activity tracking
- Auto away after 5 min inactivity
- Offline on page close/visibility change
- Integrated in MatrixChatRoom component

scripts/start-city-space-services.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+# Start City and Space services with API Gateway
+
+set -e
+
+echo "🚀 Starting DAARION City + Space Services..."
+
+# Build and start services
+docker-compose -f docker-compose.city-space.yml up -d --build
+
+echo ""
+echo "✅ Services started!"
+echo ""
+echo "📊 Service URLs:"
+echo "   City Service:    http://localhost:7001"
+echo "   Space Service:   http://localhost:7002"
+echo "   API Gateway:     http://localhost:8080"
+echo ""
+echo "🏥 Health Checks:"
+echo "   City:    curl http://localhost:8080/health/city"
+echo "   Space:   curl http://localhost:8080/health/space"
+echo "   Gateway: curl http://localhost:8080/health"
+echo ""
+echo "📡 API Endpoints:"
+echo "   City Snapshot:   http://localhost:8080/api/city/snapshot"
+echo "   Space Planets:   http://localhost:8080/space/planets"
+echo "   Space Nodes:     http://localhost:8080/space/nodes"
+echo "   Space Events:    http://localhost:8080/space/events"
+echo ""
+echo "📖 API Docs:"
+echo "   City:    http://localhost:7001/docs"
+echo "   Space:   http://localhost:7002/docs"
+echo ""
+echo "📝 View logs:"
+echo "   docker-compose -f docker-compose.city-space.yml logs -f"
+
+
+
+