fix: update masonry grid sizing logic and notebook list padding

mcp-server/Dockerfile

@@ -4,6 +4,9 @@ FROM node:20-alpine
 # Install dependencies
 WORKDIR /app
 
+# Install curl and wget for healthchecks
+RUN apk add --no-cache curl wget
+
 # Copy package files
 COPY package*.json ./
 
@@ -28,12 +31,22 @@ USER mcp
 
 WORKDIR /app
 
-# Expose (not needed for stdio, but useful for SSE variant)
-EXPOSE 3000
+# Expose port for SSE mode (3001)
+EXPOSE 3001
 
-# Health check
+# Create startup script
+RUN printf '%s\n' '#!/bin/sh' \
+    'if [ "${MCP_MODE}" = "sse" ]; then' \
+    '    echo "Starting MCP server in SSE mode on port ${PORT:-3001}"' \
+    '    exec node index-sse.js' \
+    'else' \
+    '    echo "Starting MCP server in stdio mode"' \
+    '    exec node index.js' \
+    'fi' > /app/start.sh && chmod +x /app/start.sh
+
+# Health check - works for both modes
 HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
-  CMD node -e "console.log('healthy')" || exit 1
+  CMD if [ "${MCP_MODE}" = "sse" ]; then wget --spider -q http://localhost:${PORT:-3001}/ 2>/dev/null || exit 1; else node -e "console.log('healthy')" || exit 1; fi
 
-# Start MCP server
-CMD ["node", "index.js"]
+# Start MCP server with mode selection
+CMD ["/app/start.sh"]