[TATP-233]

Summary

• 版本 bump 1.4.0 → 1.5.0：pyproject.toml、pyproject.rocm.toml、uv.lock、uv.rocm.lock 根条目
• changelog：Unreleased 提升为双语 1.5.0 (2026-10-22) 节，并补入 Bug: mjwarp off-policy collector Env Step 分解缺 Backend Step——done-gate host sync 计时误归入 Reset Done #2495（mjwarp Backend Step 归因修复 + 终端 CUDA MPS 指示）条目
• 合并后流程：在 merge commit 上 dispatch ci.yml，成功后推 annotated tag v1.5.0 触发 release.yml（build → twine check → wheel 安装冒烟 → PyPI trusted publishing → GitHub Release）

Linked Work

• Issue: n/a（发布流程；内容见 changelog 1.5.0 节）
• Parent roadmap (when applicable): n/a
• Roadmap declared base (when applicable): n/a
• Milestone: n/a
• Base branch: main

Validation

• make test-all passed on the final local head before this PR was created or updated
• Additional task-specific validation listed below

Commands actually run:

uv lock --check                                                        # pass
uv run pytest tests/scripts/test_check_docs.py -q                      # 20 passed
cd docs/sphinx && UNILAB_DOCS_SKIP_AUTODOC=1 uv run --no-project --with-requirements requirements.txt sphinx-build -b html -n source build/html  # 构建成功
make test-all                                                          # GATE_EXIT=0（check + test-cov + benchmark smoke 34/34, 35/35）
uv build --out-dir /tmp/dist-1.5.0 && uvx --from twine twine check /tmp/dist-1.5.0/*   # PASSED；wheel RL payload（py.typed、native_h2d_ext.cpp）复核存在

Remote CI route:

• Base main: 等本 PR current-head CI；merge 后按 release.yml 要求在 merge commit 上 dispatch ci.yml 再打 tag。

Impact

• Backend impact: none（发布打包变更）
• Platform impact: both
• Training effect expected: no

Artifacts

• W&B: n/a
• benchmark result: n/a
• video / screenshot: n/a
• ONNX / checkpoint: n/a

Checklist

• Added or updated tests where needed（无代码变更）
• Updated docs if behavior or workflow changed（changelog 1.5.0 节）
• Linked the driving issue（n/a — 发布流程）
• Noted any follow-up work explicitly（merge 后 dispatch ci.yml + 推 v1.5.0 tag）