fix: raise Node heap cap to 512MB and bump pod memory limit (#838)

Dockerfile

@@ -30,8 +30,10 @@ ENV TZ Europe/Stockholm
 # Install wgc CLI globally for Cosmo Router composition
 RUN npm install -g wgc@latest
 
-# Cap Node.js heap for runtime wgc invocations to prevent OOM
-ENV NODE_OPTIONS="--max-old-space-size=64"
+# Cap Node.js heap for runtime wgc invocations. 512MB leaves room for
+# composing supergraphs with many subgraphs; lower caps (e.g. 64MB) OOM
+# wgc as the subgraph count grows.
+ENV NODE_OPTIONS="--max-old-space-size=512"
 
 # Copy timezone data and certificates
 COPY --from=build /usr/share/zoneinfo /usr/share/zoneinfo

k8s/deploy.yaml

@@ -43,7 +43,9 @@ spec:
         resources:
           requests:
             cpu: "20m"
-            memory: "20Mi"
+            memory: "128Mi"
+          limits:
+            memory: "768Mi"
         livenessProbe:
           httpGet:
             path: /health/live