release: v0.3.4 — multi-BRANCH pause anomaly fixed (closes #146)#153
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Bumps Cargo workspace + Python SDK 0.3.3 → 0.3.4. After 5 probe rounds traced the multi-BRANCH pause_ms anomaly to ext4's delayed allocation + writeback throttle + multi-block allocator + block-bitmap CRC, PR #152 fixed it with a single posix_fallocate call. Measured impact: ext4 SSD, 10 consecutive diff BRANCHes: BRANCH 6 pause_ms: 2700 → 153 (17.6×) median BRANCH 3-10: ~1700 → ~200 ms (~8.5×) This is the first release that should auto-publish to PyPI via the new release.yml → publish-pypi.yml chain (PR #144). v0.3.1-0.3.3 all required manual workflow_dispatch. Full notes in CHANGELOG.md § 0.3.4. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Bumps Cargo workspace + Python SDK 0.3.3 → 0.3.4. Adds CHANGELOG entry. After merge, tag `v0.3.4` to trigger the release chain.
What's in v0.3.4
Headline: PR #152 fixes the multi-BRANCH pause_ms anomaly (#146). `posix_fallocate` the memory.bin before BRANCH writes. ext4 stops running mballoc per write range. Measured: BRANCH 6 from 2700 ms → 153 ms (17.6×); median across BRANCH 3-10 from ~1700 → ~200 ms (~8.5×).
Bonus: this is also the first release using the auto-publish chain (#144). v0.3.1-0.3.3 all required manual `gh workflow run`; v0.3.4 should fire automatically after tag push.
Test plan
🤖 Generated with Claude Code