R5.5: ElyTable right-click menus, Excel-style; three rounds used, last fixes tested

Grid and header menus share ely_office::menu with ElyDoc. Each item's
availability is the kernel's state for the exact command it runs
(patch 0045). Patch 0046 lets a header select its row or column while
a shape is selected or its text is edited: the view shell ends the
drawing edit, keeps the typed text, leaves drawing mode, then marks.
Ely no longer sends Esc first.

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

tasks/BUGS.md

@@ -149,4 +149,6 @@ P0 次序：W-01、K-01、L-01、O-01、W-02、L-02、W-03、L-03、W-04、L-04
 - [ ] P3-06 Windows：删不掉内核仍开着文件的标签工作目录（错误 32），写入失败无从模拟（`tests::more::a_kernel_write_failure_stays_visible`）
 - [ ] P3-07 Windows：测试以 `kill -9` 杀 worker，Git Bash 的 kill 不认 Windows 进程号，worker 不死（`view::tests::commands::a_dead_worker_reaches_apps_while_idle`）
 - [ ] P3-08 Windows（AMD）：多个 worker 同时启动时内核的 OpenCL 探测卡在驱动的 `clCreateCommandQueue` 里数分钟（`openclwrapper::switchOpenCLDevice`）；测试以 `SAL_DISABLE_OPENCL=1` 绕开；是否在 `ely.xcd` 关掉 `UseOpenCL` 待用户定
+- [ ] P3-09 Windows：内核给的选区文字与文本导出以 CRLF 换行，三个 ElyTable 单测按 LF 比对（`tests::data::sort_filter_duplicates_and_columns_run_from_their_dialogs`、`a_column_button_sorts_its_own_block_not_the_cursors`、`tests::output::exports_write_the_shown_sheet_as_text`）；导出该用哪种换行待定
+- [ ] P3-10 Windows：`crates/ely-office/tests/restart.rs` 设 `HOME` 想用临时目录，但 Windows 上 `data_dir` 取已知文件夹（不看 `HOME`），测试在真实的 ElyDoc 配置里运行；中途被杀即留下挡路的 `lok-verify.fodt` 文件夹，真实 ElyDoc 的内核核对随之失败（2026-10-14 审查中出现，已手动删去）