fix(swarm): Remove build directives and unsupported options for swarm

Docker Swarm doesn't support build directives or security_opt.
Images must be pre-built before deployment.

Changes:
- Created build-images.sh script to build all images
- Updated deploy-swarm.sh to check for images and offer to build
- Removed build: sections from docker-compose.swarm.yml
- Removed security_opt: (not supported in swarm)
- Services now reference pre-built images only

Deployment workflow:
1. ./build-images.sh (build all images)
2. ./deploy-swarm.sh mosaic (deploy to swarm)

deploy-swarm.sh

@@ -72,10 +72,33 @@ else
     echo "✅ traefik-public network already exists"
 fi
 
-# Build images (optional - uncomment if you want to build before deploying)
-# echo ""
-# echo "🔨 Building images..."
-# docker compose -f $COMPOSE_FILE build
+# Check if images exist, offer to build if not
+echo ""
+echo "🔍 Checking if images are built..."
+IMAGES_MISSING=0
+for img in mosaic-stack-postgres mosaic-stack-openbao mosaic-stack-api mosaic-stack-orchestrator mosaic-stack-web; do
+    if ! docker images --format "{{.Repository}}" | grep -q "^${img}$"; then
+        echo "   ⚠️  Missing: $img"
+        IMAGES_MISSING=1
+    fi
+done
+
+if [ $IMAGES_MISSING -eq 1 ]; then
+    echo ""
+    echo "❌ Some images are missing. Build them first:"
+    echo "   ./build-images.sh"
+    echo ""
+    read -p "Build images now? [Y/n]: " BUILD_NOW
+    BUILD_NOW=${BUILD_NOW:-Y}
+    if [[ $BUILD_NOW =~ ^[Yy]$ ]]; then
+        ./build-images.sh || exit 1
+    else
+        echo "Aborting deployment. Build images first."
+        exit 1
+    fi
+else
+    echo "✅ All images are built"
+fi
 
 # Deploy the stack
 echo ""