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fam a0253e118f video2slides: 重构为纯客户端 app（浏览器抽帧 + IndexedDB），后端归零
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- 不再上传视频：<video>+canvas 原生解码按时间戳 seek 抽帧，逐帧 256px 灰度
  MAE 算差异，缩略图(320)+大图(1280) 随抽随写 IndexedDB，带进度条+ETA
- 阈值/手动 保留弃用/缩放偏好 持久化到 IndexedDB，刷新仍在
- PDF 导出回到客户端 jsPDF，保留帧逐张 base64 嵌入、单帧处理防 OOM
- 后端删光业务逻辑（core.rs/handlers.rs），main.rs 缩成 cube_core::base 静态服务
- 不再需要 ffmpeg → Dockerfile 回归 FROM scratch；k8s 去掉 hostPath 卷、降资源
- 真浏览器(Playwright)验证：抽帧/差异/阈值/持久化/导出 全通过
 2026-06-14 22:25:20 +01:00
fam b36e30ecbf video2slides: 加 PDF 导出（服务端流式）+ 点击切换帧 保留/弃用 
- 点击卡片切换 use/discard，手动覆盖阈值判定；手动标记角标 + 重置按钮
- 导出 PDF：后台 job，逐张把帧 JPEG 以 DCTDecode 直接嵌入、边读边写到磁盘，
  内存峰值只一张帧，防大视频 OOM；前端轮询进度条
- 下载走流式（ReaderStream），不把整份 PDF 读进内存；?c= query 触发下载
- 手撸极简 PDF writer（无新 PDF 依赖），只扫 JPEG 头取宽高分量数
 2026-06-14 21:58:27 +01:00
fam 4ee9b6ce78 video2slides: 新 app — 长视频抽帧 + 逐帧差异 + 拖阈值挑幻灯片 
Rust + axum + cube-core，前端纯静态单页。ffmpeg 每 N 秒抽一帧（限宽
1280），image crate 逐帧灰度 MAE 算差异；前端拖阈值实时把相近帧变灰、
关键变化高亮，悬停出彩色大图，分页 + toolbar 常驻。按 X-Client-Id 分目录
隔离，存储走 hostPath。镜像非 scratch：debian-slim + ffmpeg + musl binary。
 2026-06-14 21:29:47 +01:00