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docs: daily engineering digest 2026-07-05 #21

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39 changes: 39 additions & 0 deletions automations/livekit-agent/2026-07-05.markdown
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# LiveKit Agents 工程日报

## 覆盖时间

**2026-07-04 00:01 UTC — 2026-07-05 00:01 UTC**（与每日 cron 触发对齐）

**上游 [livekit/agents](https://github.com/livekit/agents) `main`**：过去 24 小时内 **无新合并 PR**。最新合并为 2026-07-03 的 [#6300](https://github.com/livekit/agents/pull/6300)（TTS TTFB 延迟归因修复）。

**本仓库（[Seventhen/agents](https://github.com/Seventhen/agents) `main`）**：同期 **无新提交**；相对上游 **落后约 206 个提交**。

---

## 要点变更

- **合并窗口静默**：`git log upstream/main --since="2026-07-04T00:01:15Z" --until="2026-07-05T00:01:15Z"` 返回 0 条记录；上游 `main` 在统计窗口内无代码落地。

- **活跃 PR 但未合并**（2026-07-04 有更新，尚待 review/merge）：
- [#6318](https://github.com/livekit/agents/pull/6318) `fix(voice): resolve video task leak in AgentSession` — 修复 AgentSession 视频任务泄漏
- [#6315](https://github.com/livekit/agents/pull/6315) `fix(voice): race between session.run and an in-flight AgentTask handoff` — 修复 session.run 与 AgentTask handoff 竞态
- [#6302](https://github.com/livekit/agents/pull/6302) `livekit-agents@1.6.5` — 版本发布 PR（bot 提交）
- [#6320](https://github.com/livekit/agents/pull/6320) `remove livekit-blingfire (moved)` — 移除已迁移的 blingfire 依赖

- **上一合并日（7/3）遗留影响**（若尚未升级，仍值得关注）：
- [#6300](https://github.com/livekit/agents/pull/6300)：修正 `tts.ttfb` 仅统计首 token、忽略句子送入 TTS 时刻的问题；影响 `generation.py`、`tts/fallback_adapter.py` 及指标归因
- [#6305](https://github.com/livekit/agents/pull/6305)：OpenAI Responses 转换不再就地修改 `raw_schema`，避免多 provider 复用同一 schema 时字段污染
- [#6306](https://github.com/livekit/agents/pull/6306)：LiveAvatar 保留 provider 原始 HTTP 状态错误，不再被通用 retry fallback 吞掉
- [#6307](https://github.com/livekit/agents/pull/6307)：OpenAI STT 新增 `temperature` 参数（closes #6303）

- **安全 / 依赖**：统计窗口内 **无** 已合并的依赖升级或安全补丁 PR。

---

## Watchlist

1. **Fork 漂移加剧**：本仓库 `main` 落后上游 **206 提交**；7/3 的 TTFB 修复、OpenAI schema 防变异、LiveAvatar 错误透传等修复均未纳入 fork，生产若基于本仓库需规划 merge/rebase。

2. **待合并 voice 修复**：[#6318](https://github.com/livekit/agents/pull/6318)（video task leak）与 [#6315](https://github.com/livekit/agents/pull/6315)（handoff 竞态）均在 7/4 活跃更新；合并后建议对含视频轨与 agent handoff 的场景做回归。

3. **1.6.5 发布与 blingfire 移除**：[#6302](https://github.com/livekit/agents/pull/6302) 与 [#6320](https://github.com/livekit/agents/pull/6320) 若合并，升级路径需核对 tokenizer/依赖变更（7/2 已默认切换 blingfire tokenizer [#6301](https://github.com/livekit/agents/pull/6301)）。