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feat: 直播源 P3（LIVE/ICY 重连状态机与事件计数门禁） - #160
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- HlsExtractor：诊断旁路三条不变量（读失败/流结束分离，nullptr 语义不扩展）、 无状态重开原语 reopenConnection（#157 契约，ADR 0006/0007） - AudioStreamDecoder：解码线程重连状态机（预算 3 次、每次 1s 分片等待可打断、 唯一终局 FileOpenFailed、规格一致性准入）；PCM 与 ffmpeg 两条供给分支接入 单一入口；pos==0 seek 在无限流上实现层短路（D21）；liveReconnectAttempts() 事件计数仪表（规格 §10.2 取数点，非能力位） - HttpSource：无 Content-Length 响应 1MB 读上限（ICY 无限流探测防护） - UrlSource：嗅探补发 Icy-MetaData: 1（D19） - MusicPlayList：LIVE / EVENT 清单放行直通路径（D17/D18，durationMs==0 单一信号） - HttpMocks：窗口化 LIVE 滑动窗口（段=同一条 wav 流的连续切片、data 块不限长）、 ICY 端点重写（头组合修正 + metaint 元数据块）、sendAllGuarded 防 TCP 背压 卡死、按取回序号（seq）的断流注入面 - 测试：LiveSourceReconnect 3 例（预算耗尽 attempts==3 / 断流恢复走状态机 / seek 短路零状态变化，事件计数判据，变异验证必红）；HlsUrlDirect 判据改写 （LIVE/EVENT 放行 + ICY 直通 + 诊断旁路）；LiveSmoke 手工冒烟独立可执行 （不注册 ctest，D23：无限流不主动结束 / ICY 稳态 / stop() 有限时间返回）
This was referenced Nov 13, 2026
This was referenced Nov 13, 2026
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Nov 13, 2026
- doc/live-source-spec.md §11.2 表下：登记 P3 执行票链已落地（efaddd3ff + c39ff45 / PR #160 / 6 个 CI run 全绿），附加项「播放主路径挂死」已闭环，③ 授权复核仍属界外未闭环 - doc/network-audio-source-spec.md §5.3 与 §11：同口径时点指针，覆盖「播放主路径未设读超时 / 补 rw_timeout 由图外 effort 落地」的过期措辞 - 既有行、表格单元格、判据数值、TIMEOUT 与 GLOSSARY.md 一字不动（+6 / -0）；工作树保持 CRLF - 票正文不改：#147 / #156 各挂一条更正 comment - 纯 doc 提交按 workflow paths 过滤不触发 CI
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状态更正（2026-11-14，人工合规动作）—— D25 授权复核已归档本 PR 正文末句「授权复核七项清单（D25）留在图外，见 #157」是 2026-11-13 合入时点快照。按「PR / 票正文是历史留痕不改」的纪律不回改，此处登记状态变更：
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摘要
落地 doc/live-source-spec.md 的 P3 域外执行票链（#157 契约 → #158 实现 → #159 门禁）：
唯一终局 FileOpenFailed、规格一致性准入；PCM 与 ffmpeg 两条供给分支单一入口
Icy-MetaData: 1（D19）；HttpSource 无 Content-Length 响应 1MB 上限
门禁证据（#159）
授权复核七项清单（D25）留在图外，见 #157。