[sharding] FATAL ERROR: NewSpace:: EnsureCurrentCapacity Allocation failed - JavaScript heap out of memory (verify on current build) #197

Investigative — verify on current build. Heap OOM under sharding load. Related to CORE-2944 (general heap OOM on 4.7.4). Investigate whether the shard subscription scanning or proxy request path has a memory leak under load.

🤖 Filed by Claude on behalf of Kris.