<!-- 使用 release/v0.19.5-nightly.20260703.b16baf1ff 分支中 .github/release.yml 的配置生成的发布说明 -->
## 更新内容
* fix(web-shell): 消除移动端会话切换的卡顿问题（记忆化时间线签名，优先重放调度） by @qqqys in https://github.com/QwenLM/qwen-code/pull/6183
* fix: 从 bundle 目录而非 chunks/ 目录解析 macOS seatbelt 配置文件路径 by @mvanhorn in https://github.com/QwenLM/qwen-code/pull/6172
* fix(cli): 添加引导快速路径 by @gauravyad86 in https://github.com/QwenLM/qwen-code/pull/6188
* fix(core): 减少多模态历史消息负载大小 by @LaZzyMan in https://github.com/QwenLM/qwen-code/pull/6045
* fix(core): 防止在 ${hook_context} 占位符未配置钩子时子代理崩溃 by @DennisYu07 in https://github.com/QwenLM/qwen-code/pull/6180
* ci(release): 优化验证步骤 by @yiliang114 in https://github.com/QwenLM/qwen-code/pull/6133
**完整更新日志**: https://github.com/QwenLM/qwen-code/compare/v0.19.5...v0.19.5-nightly.20260703.b16baf1ff
<!-- Release notes generated using configuration in .github/release.yml at release/v0.19.5-nightly.20260703.b16baf1ff -->
## What's Changed
* fix(web-shell): cut mobile session-switch jank (memoized timeline signature, replay-first dispatch) by @qqqys in https://github.com/QwenLM/qwen-code/pull/6183
* fix: resolve macOS seatbelt profile path from bundle dir, not chunks/ by @mvanhorn in https://github.com/QwenLM/qwen-code/pull/6172
* fix(cli): add bootstrap fast paths by @gauravyad86 in https://github.com/QwenLM/qwen-code/pull/6188
* fix(core): Reduce multimodal history payload size by @LaZzyMan in https://github.com/QwenLM/qwen-code/pull/6045
* fix(core): prevent subagent crash when ${hook_context} placeholder has no hook configured by @DennisYu07 in https://github.com/QwenLM/qwen-code/pull/6180
* ci(release): optimize validation steps by @yiliang114 in https://github.com/QwenLM/qwen-code/pull/6133
**Full Changelog**: https://github.com/QwenLM/qwen-code/compare/v0.19.5...v0.19.5-nightly.20260703.b16baf1ff