Baseline interpreter: /usr/bin/python3.12 CPython 3.12.3, Ubuntu 3.12.3-1ubuntu0.17, ordinary GIL build (00 freezing applies).
Platform: Linux x86_64, glibc 2.39, GCC 13.3.0 (see 31 environment for kernel version).
Hexo isolated runtime: /opt/cloudcli/node/bin/node v22.16.0.
Input: word_count 'One two one'; two distinct task IDs with separate asyncio.Event gates; fault gate opens only after both tasks start, other remains blocked. timeout_at = loop.time() + 0.1; threshold is not a benchmark or exact stop latency.
Python 3.12 official docs checked HTTP 200 on 2026-10-08: https://docs.python.org/3.12/library/asyncio-task.html#task-groups and #task-cancellation and #timeouts.
External side-effect completion, process forced termination, cross-platform timing: NOT_RUN.
