Implement BoundedReaderPool and thread-local tokenizer cache in ArrayRecordDataSource for deterministic and resource-safe reading. #546

Job	Run time
call-workflow / Python 3.11 on ubuntu-22.04-arm	5m 43s
call-workflow / Python 3.14 on ubuntu-22.04-arm	9m 9s
call-workflow / Python 3.12 on ubuntu-22.04-arm	3m 52s
call-workflow / Python 3.14 on ubuntu-22.04	10m 32s
call-workflow / Python 3.11 on ubuntu-22.04	5m 21s
call-workflow / Python 3.13 on ubuntu-22.04-arm	6m 8s
call-workflow / Python 3.12 on ubuntu-22.04	8m 54s
call-workflow / Python 3.11 on macos-14	1m 47s
call-workflow / Python 3.12 on macos-14	8m 13s
call-workflow / Python 3.13 on ubuntu-22.04	2m 45s
call-workflow / Python 3.13 on macos-14	6m 0s
call-workflow / Python 3.14 on macos-14	8m 37s
call-workflow / publish-wheel	0s
	1h 17m 1s

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