Strands Agents SDK TypeScript v1.19.0 发布
原标题：typescript/v1.19.0
AI 摘要
Strands Agents SDK 发布 TypeScript 版本 v1.19.0，主要新增默认使用 Opus 5 与高思考模式、合并 Strands Harness、BedrockModel 支持 requestTimeout、Python 侧新增 mcp_router 工具、Graph 与 Swarm 支持快照会话管理，并将 handoff_to_user 工具移植到 TypeScript。同时修复了 CLI 安装 provider SDK、沙箱 UTF-8 流边界、MCP 认证流程、OpenAI prompt-cache 写入 token 暴露等问题，并重构了双向音频模块、更新文档与 CI 发布流水线。
正文节选
## typescript/v1.19.0 _Auto-drafted from commits in `typescript/v1.18.0..typescript/v1.19.0`, grouped by conventional-commit type. Edit on the release page after publish if you want a polished writeup; the canonical release notes live on the website._ ### 🚀 Features - feat(defaults): opus 5 and high thinking by default (#4460) (c3fc5ff81) - feat(site): launch the redesigned Strands website (#4446) (1fd2ad684) - feat: merge in the Strands harness (#4447) (4095cf5a6) - feat(bedrock): requestTim