双方联合开发 Stateful Runtime Environment（有状态运行时环境），让 AI ·Agent 能记住上下文、调用工具；
For implementers, BYOB adds significant complexity. The stream must track pending BYOB requests, handle partial fills, manage buffer detachment correctly, and coordinate between the BYOB reader and the underlying source. The Web Platform Tests for readable byte streams include dedicated test files just for BYOB edge cases: detached buffers, bad views, response-after-enqueue ordering, and more.
，更多细节参见Line官方版本下载
"Get the camera, quick," said Lovell.
while (stack.length 0 && stack[stack.length - 1] <= cur) {