Fix hung Next build: SSG timeout + fast-fail backend URL

Dockerfile

@@ -20,8 +20,12 @@ COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 # Optional reactflow repair after full tree is present
 RUN node scripts/verify-reactflow.js || true
-ARG NEXT_PUBLIC_API_URL=
-ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
+# During image build there is no backend — use a fast-fail URL so SSG cannot hang
+ARG NEXT_PUBLIC_API_URL=http://127.0.0.1:9
+ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL} \
+    API_BASE_URL=${NEXT_PUBLIC_API_URL} \
+    BACKEND_URL=${NEXT_PUBLIC_API_URL} \
+    PYTHON_BACKEND_URL=${NEXT_PUBLIC_API_URL}
 RUN npm run build
 
 FROM node:20-bookworm-slim AS runner

next.config.js

@@ -14,6 +14,8 @@ const nextConfig = {
   typescript: {
     ignoreBuildErrors: true,
   },
+  // Fail hung getStaticProps/API calls during build instead of waiting forever
+  staticPageGenerationTimeout: 45,
   output: 'standalone',
   images: {
     unoptimized: true,
@@ -21,12 +23,13 @@ const nextConfig = {
   transpilePackages: ["@chakra-ui/react", "@chakra-ui/icons", "@ark-ui/react"],
   outputFileTracingRoot: process.cwd(),
 
-  // Disable SWC minification to work around "erator is not defined" bug
-  // See: Phase 247-02 SUMMARY.md for details
-  productionBrowserSourceMaps: true,
+  // Source maps bloat HF image build; disable in Space package
+  productionBrowserSourceMaps: false,
 
   experimental: {
     externalDir: true,
+    // Fewer page-data workers on small HF builders (avoids thrash/hangs)
+    cpus: 2,
   },
 
   // Disable minification via webpack configuration