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长截图：改用系统画面流（第一阶段），离线重放工具与真机验收 - #24
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
M23 规则 13：start_native_stream 的 macOS 实现放在 macos_stream.rs。 SCContentFilter 排除边框窗口；sourceRect 为选区，宽高 round(w×scale)、 round(h×scale)，最多 60 帧/秒，BGRA、sRGB、不带光标；只收状态为 complete 的帧，BGRA 转 RGBA 后放进最新一帧槽位；didStopWithError 置失败； 停止闭包等 stopCapture 回调，上限 CALLBACK_WAIT。 录屏的取可录制内容、找显示器与排除窗口抽成 content_filter， ns_err、wait_done、CMSampleBufferGetImageBuffer 改为两处共用。 颜色比对（2 倍屏，主屏 (100,100,200,120) 点，静止画面，400×240）： 与 capture_rect 逐通道最大差 3，差 ≤ 2 的占 99.8%（差 3 的 694 个通道）， 两边各自做 sRGB 转换的舍入差；不设 sRGB 时最大差 10。同一次长截图的帧 都来自画面流，不影响拼接。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- 新增 windows_stream.rs：按显示器创建采集项，自由线程帧池（BGRA8，2 个缓冲）， 关掉黄色边框与光标；每帧在 GPU 上按选区裁到暂存纹理、读回转 RGBA 放进槽位。 选区取 AreaOptions::native 减显示器左上角，取整与 capture_rect 相同，输出尺寸一致。 build < 20348、选区跨屏、采集尺寸与显示器矩形不符或任一步失败时返回 Err，回退逐帧截屏（M23 规则 13） - windows.rs：抽出 monitors()（freeze_displays 共用，下标即显示器序号），新增 windows_build()（RtlGetVersion） - 跨平台的带行补齐 BGRA → RGBA 移到 stream.rs，macOS 与 Windows 共用 - 集成测试 area_stream_matches_capture_rect 放开到 Windows：按系统版本断言模式，CI 上截不到只跳过 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- 帧池缓冲尺寸固定，分辨率或缩放中途变了只能从 ContentSize 看出：与开始时的显示器尺寸不符就结束画面流 - 离上次处理的帧不到 16 ms 的帧取出后直接丢掉，Windows 11 24H2 之前也不超过 60 帧/秒（M23 规则 13） Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
WGC 只在画面变化时送帧，滚动停下前的最后一帧丢了就不会再来；24H2 之前按屏幕刷新率送帧， 槽位只留最新一帧不积压（设计文档第 7 节允许“60 或屏幕刷新率”，M23 规则 13）。保留 SetMinUpdateInterval 与 ContentSize 检查。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- 截屏线程从 start_area_stream 取帧，去掉 40 ms 定时截屏；等帧最多 100 ms，回车、Esc 及时生效 - 画面不变时画面流不出帧：不算没接上、状态不变；第一帧等不到新帧时沿用上一帧判断画面稳定 - 画面流中途断了按完成收尾，保留已拼好的部分 - 进度按 should_emit 节流：状态变化立即发，高度变化至少隔 100 ms，不变时每秒补发 - 开发构建设 XPASTE_LONG_DUMP 时后台线程逐帧存 PNG，结束时等写完 - 完成日志带画面流模式、帧数与平均处理耗时（M23 规则 13） Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
画面流在画面不变时不出帧，停住不滚时状态一直停在“没接上”。空闲时按 lost_since 计时，满 STUCK 改为 stuck（M23 规则 13）。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
真机验收后的优化：release 下 2818 × 3872 编码 1845 → 86 ms；终端帧重放平均每帧 29.5 → 9.2 ms， 结果不变；选区矮于 250 逻辑像素时提示“选区较矮，慢一点滚”。验收记录补上 macOS 真机结果。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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设计：
docs/specs/2026-11-01-长截图自动滚动-设计.md（第 6 节阶段 0、1）；计划：docs/plans/2026-11-01-长截图画面流.md。规格说明 v0.1.42（M23 规则 13）。改动
stitch_replay离线重放（cargo run -p xpaste-core --example stitch_replay -- <帧目录>），真实帧回归测试（xPaste README 网页，22 帧，2.0 MB）；开发构建XPASTE_LONG_DUMP=<目录>逐帧存图。stream.rs）：只留最新一帧的槽位；macOS 用 ScreenCaptureKit（排除边框窗口，sRGB）；Windows 11（build ≥ 20348）用 Windows.Graphics.Capture（关黄框，分辨率变化时中断）；Windows 10 与启动失败退回每 40 ms 逐帧截屏。验证
make check通过（含 Windows 交叉 clippy）。还没做的
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