feat(client): wire full Vimwiki command-parity surface

Register the named :Vimwiki*/:Nuwiki* entry points that previously
existed only as mappings or were missing entirely — including
RemoveSingleCB/RemoveCBInList, CatUrl, TabMakeDiaryNote,
NormalizeLink, Renumber{List,AllLists}, TableAlign, ChangeSymbol(InList),
ListToggle, Increment/DecrementListItem, and the DeleteLink/RenameLink/
GenerateTags compat aliases. Both the Vim (vim-lsp/coc) and Neovim
client functions are added to back them.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

lua/nuwiki/commands.lua

@@ -284,15 +284,16 @@ end
 
 -- ===== Diary =====
 
-local function _diary_open(cmd_name)
+local function _diary_open(cmd_name, tab)
   return function()
     exec(cmd_name, uri_args(), function(r)
-      if r and r.uri then open_uri(r.uri) end
+      if r and r.uri then open_uri(r.uri, tab) end
     end)
   end
 end
 
 M.diary_today = _diary_open('nuwiki.diary.openToday')
+M.diary_today_tab = _diary_open('nuwiki.diary.openToday', true)
 M.diary_yesterday = _diary_open('nuwiki.diary.openYesterday')
 M.diary_tomorrow = _diary_open('nuwiki.diary.openTomorrow')
 M.diary_index = _diary_open('nuwiki.diary.openIndex')
@@ -481,6 +482,18 @@ function M.list_remove_done_all()
   exec('nuwiki.list.removeDone', uri_args())
 end
 
+-- `:VimwikiRemoveSingleCB` — strip the checkbox from the current item only.
+function M.list_remove_checkbox()
+  exec('nuwiki.list.removeCheckbox', pos_args())
+end
+
+-- `:VimwikiRemoveCBInList` — strip checkboxes from every item in the list.
+function M.list_remove_checkbox_in_list()
+  local args = pos_args()[1]
+  args.whole_list = true
+  exec('nuwiki.list.removeCheckbox', { args })
+end
+
 function M.list_renumber()
   exec('nuwiki.list.renumber', pos_args())
 end
@@ -978,4 +991,15 @@ function M.normalize_link()
   wrap_cword_as_wikilink()
 end
 
+--- Vimwiki `:VimwikiCatUrl` — echo the `file://` URL of the current
+--- page's HTML export. The server computes the path from the wiki's
+--- html config; we surface it via `:echo` like upstream.
+function M.cat_url()
+  exec('nuwiki.link.catUrl', uri_args(), function(url)
+    if type(url) == 'string' and url ~= '' then
+      vim.api.nvim_echo({ { url } }, false, {})
+    end
+  end)
+end
+
 return M