R6.13 round 1 fix: notches per platform, the worker decides arrows

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tasks/TASKS.md

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 - [x] R6.11 Windows 升级后旧文件仍在（R6.10 本机重装查出）：安装程序只覆盖不删除，旧版 ElyMark 的 `git` 与 CEF 文件留在安装目录；安装程序记下所装的文件，升级与卸载只移去这些；文件被占用即什么也不改，失败时放回旧版。第 3 轮后（最后一轮，修完不再审查）：备份按清单次序编号，近 260 字的路径照样升级与卸载；卸载先查清单本身，删不掉即放回全部
 - [x] R6.10 重发 0.1.5（用户定：仍为 0.1.5）：删去 v0.1.5 的全部文件，标签移到修复的提交，三端全部包重建并上传，本机重装（标签在 53630ce；推标签即起发布流程，其 Windows 与 Linux 任务建出并上传，与本机同时起的 Windows 构建撞上，本机那份未上传；macOS 任务未上传，dmg 由 Mac mini 本机建、公证、钉票；44 个文件，同名的源码包只留 Linux 的一份，见 P3-16；下载回的 ElyMark 安装程序与清单的散列与构建相同；本机六个应用 0.1.5 经新安装程序升级，ElyMark 目录无 `git`，冒烟启动均正常退出、日志无警告）
 - [x] R6.12 macOS 打开一个文档，程序坞里 ElyDoc、ElyTable、ElyShow 各出现两个图标（用户 2026-10-15 报）：LOK worker 在应用包内启动 AppKit，系统按包的 Info.plist 把它也登记为常规应用（`lsappinfo` 两个 Foreground）；worker 在内核启动 AppKit 前把本进程主包信息的 `LSUIElement` 设为真，登记即为辅助应用，钩子后核对策略（第 1 轮：原先登记后才改，15 次有 11 次先为 Foreground）；`tests/scripts/dock-macos.sh` 在 Mac mini 上 30 次启动全为 UIElement，旧 worker 即失败；第 2 轮：包外的 worker（`cargo run`、单测）策略为禁止，原核对即退出，改设辅助，测试另启包外的开发构建（40 次全过）；第 3 轮通过
-- [ ] R6.13 ElyShow 编辑区的滚轮与上下键不换页（用户报，三端；放映时正常）：内核在未选中对象时把上下键当作滚动窗口，Ely 的画布整页适合、无处可滚；整页可见时滚轮换页（每格一页，触控板一次手势一页），未选中对象、未编辑文字时上下键换页，同缩略图条的路径，到首末页即停
+- [ ] R6.13 ElyShow 编辑区的滚轮与上下键不换页（用户报，三端；放映时正常）：内核在未选中对象时把上下键当作滚动窗口，Ely 的画布整页适合、无处可滚；整页可见时滚轮换页（每格一页，触控板一次手势一页），未选中对象、未编辑文字时上下键换页，同缩略图条的路径，到首末页即停；第 1 轮：Windows 一格三行原换三页，X11 触控板的小数行一次滑动换多页，按住手指停顿后再滑又换一页，Tab 后紧接的 Down 按旧状态换页；改为按平台每格行数计格、小数行与像素按手势计、有起止的手势只到结束才算完、上下键由 worker 按输入次序判定
 - [ ] R6.14 重发 0.1.5（用户定：仍为 0.1.5，全部重建并重传）：删去 v0.1.5 的全部文件，标签移到 R6.12、R6.13 的提交，三端全部包重建并上传，本机重装

tasks/reviews/R6.13-r1.md

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+FAIL
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+- crates/ely-lok/src/view/turn.rs:41 — Logical scroll lines are counted as physical wheel notches. Windows multiplies each notch by the system scroll-line setting (`vendor/gpui-pre-windows/src/events.rs:589`); with three lines configured, one downward notch produces `Lines(0, -3)`. Replaying that event through ElyShow and the rebuilt LOK worker moved from slide 1 to slide 4, rather than slide 2 (`.work/R6.13-r1/probe-explicit.log`). The pinned Linux X11 backend also uses three lines per notch. Normalize platform wheel units before counting slide changes, and cover realistic platform deltas; the existing tests only exercise unit notches.
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+- crates/ely-lok/src/view/turn.rs:37 — The line-delta branch never applies the one-turn-per-gesture limit, but the pinned GPUI X11 backend also represents smooth touchpad scrolling as `ScrollDelta::Lines` (`gpui-pre-linux-0.3.8`, `x11/client.rs`, `get_scroll_delta_and_update_state` and `make_scroll_wheel_event`). Replaying ten consecutive `-0.4` line deltas in one UI update through ElyShow/LOK moved from slide 1 to slide 5 instead of slide 2 (`.work/R6.13-r1/probe-extra.log`). Preserve the distinction between discrete wheel steps and smooth XInput gestures in the input adapter, and apply gesture limiting to the latter; clamping each event individually would still turn repeatedly during one swipe.
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+- crates/ely-lok/src/view/turn.rs:48 — A 250 ms pause resets `spent` even when the platform reports continuation of the same gesture. With a fitted deck, a `Started` event of -60 pixels turns one slide; keeping fingers down, pausing 300 ms, then sending a `Moved` event of -60 pixels turns another. This reproduced through ElyShow/LOK with slide index 2 instead of 1 (`.work/R6.13-r1/probe-explicit.log`). Track explicit gesture lifetime when phases are available; elapsed time must not reopen an explicitly ongoing gesture. Reserve timeout inference for streams without gesture boundaries and test continuation after a pause.
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+- crates/ely-lok/src/view/turn.rs:80 — The arrow-key decision uses the last selection callback without accounting for earlier queued input. On a title slide, press Tab to select its placeholder and Down before the worker's selection callback arrives: Down emits `Turn`, so the queued Tab selects the object and the following part change leaves the slide instead of moving that object. The integration probe changed slide index 0 to 1; its control case, waiting for Tab's selection before Down, stayed on slide 0 (`.work/R6.13-r1/probe-extra.log`). Resolve the arrow's action against the selection/editing state after preceding inputs and their callbacks have landed, while preserving input order, and add this queued-input regression.