**Payload Performance Test:**
- Add job cleanup after each iteration using DeleteJob()
- Ensure isolated memory measurements between test runs
**All Benchmark Tests:**
- General improvements and maintenance updates
- Replace worker.DirOverallSHA256HexParallel with worker.DirOverallSHA256Hex
- Fixes in dataset_hash_bench_test.go and hash_bench_test.go
- All benchmarks pass with native_libs build tag
- Add skip checks to native queue benchmarks when FETCHML_NATIVE_LIBS=0
- Skip TestGoNativeArtifactScanLeak cleanly instead of 100 warnings
- Add build tags (!native_libs/native_libs) for Go vs Native comparison
- Add benchmark-native and benchmark-compare Makefile targets
