Fix: increase memory for vite build

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -3,7 +3,7 @@ FROM node:20-slim
 # Set noninteractive installation
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Build timestamp to force cache invalidation: 2026-01-12T21:35
+# Build timestamp to force cache invalidation: 2026-01-12T21:45
 
 # Install build dependencies
 RUN apt-get update && apt-get install -y \
@@ -41,8 +41,8 @@ RUN npm install --omit=dev && \
     cd ../backend && npm install && \
     cd ..
 
-# Build frontend with vite
-RUN cd app && npm run build:prod
+# Build frontend with vite (increase memory limit)
+RUN cd app && NODE_OPTIONS="--max-old-space-size=4096" npm run build:prod
 
 # Build backend with esbuild
 RUN mkdir -p backend/dist/backend/src && \