87ba4c1764
Add headless harnesses covering the calendar-vim integration, wired into CI alongside the existing keymap/config suites: - test-calendar-vim.sh/.vim (+ -optout.vim): pure-VimL diary hooks (calendar_sign markers, calendar_action path resolution from wiki root, calendar window close), plugin/nuwiki.vim hook auto-wiring that overrides calendar-vim's defaults, and opt-out via g:nuwiki_use_calendar and g:nuwiki_no_calendar. Uses a stub calendar-vim on the runtimepath. - test-calendar.sh/.lua: Neovim setup() wiring + window-close under the real window API, and opt-out via use_calendar = false. Fixes surfaced by the suite: - diary.vim: new diary entries set filetype 'vimwiki' (was the raw extension, e.g. 'wiki'); the stray FileType autocmd also blocked the calendar window from closing. - init.lua: drop the redundant Neovim FileType autocmd (plugin/nuwiki.vim already wires both editors) and translate use_calendar=false into g:nuwiki_no_calendar so the opt-out actually disables wiring.