SDK/native bridge ABI version.
Bytes retained in the native decoded-tile cache; excludes live references outside that cache.
Cumulative native tile-cache lookup hits.
Upstream Git revision compiled into WASM; must match the dataset.
Valhalla release compiled into the worker's WASM.
Allocated linear-memory capacity high-water in bytes, not live allocations or process RSS.
Native build identity and cumulative memory/cache counters for this worker.