test: land the vim diary -count cases + dedup the lua one (follow-up to 2da2168)

2da2168's diary test edits landed unevenly: the lua
cmd.VimwikiMakeDiaryNote_has_count case got inserted twice, and the two vim
cases (cmd.Vimwiki{MakeDiaryNote,DiaryIndex}_accepts_count) the commit message
referenced never landed (the Edit had no-matched). Remove the lua duplicate and
add the two vim cases before the harness wrap-up. lua 284, vim 274/18/21, all
0 failed.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

development/tests/test-keymaps-vim.vim

@@ -727,6 +727,35 @@ call s:record(
       \ 'complete.colors_from_buffer_spans',
       \ 'got ' . string(s:cl))
 
+" ===== Diary-note family -count=0 (wiki selector) =====
+" Was bare: `:2VimwikiMakeDiaryNote` raised E481. The diary open is an LSP
+" roundtrip (no server here), so assert only the attribute parse: no E481.
+call s:set_buf(['= page ='])
+let s:dc_err = ''
+try
+  silent 2VimwikiMakeDiaryNote
+catch /E481/
+  let s:dc_err = v:exception
+catch
+  " non-E481 (e.g. no LSP attached) is expected and fine here.
+endtry
+call s:record(
+      \ s:dc_err ==# '' ? 1 : 0,
+      \ 'cmd.VimwikiMakeDiaryNote_accepts_count',
+      \ 'err=' . s:dc_err)
+
+let s:di_err = ''
+try
+  silent 2VimwikiDiaryIndex
+catch /E481/
+  let s:di_err = v:exception
+catch
+endtry
+call s:record(
+      \ s:di_err ==# '' ? 1 : 0,
+      \ 'cmd.VimwikiDiaryIndex_accepts_count',
+      \ 'err=' . s:di_err)
+
 " ===== Wrap up =====
 
 call add(s:results, '')

development/tests/test-keymaps.lua

@@ -915,15 +915,6 @@ vim.defer_fn(function()
       error('VimwikiMakeDiaryNote missing -count: ' .. vim.inspect(c))
     end
   end)
-  -- Diary-note family carries -count=0 (vimwiki's wiki selector), so
-  -- `:2VimwikiMakeDiaryNote` selects wiki #2 instead of raising E481.
-  tobj_case('cmd.VimwikiMakeDiaryNote_has_count', function()
-    local c = vim.api.nvim_buf_get_commands(0, {}).VimwikiMakeDiaryNote
-    if not c then error(':VimwikiMakeDiaryNote not defined') end
-    if c.count == nil or c.count == false then
-      error('VimwikiMakeDiaryNote missing -count: ' .. vim.inspect(c))
-    end
-  end)
   -- `:VimwikiNormalizeLink 1` (the arg is upstream's visual flag; the command
   -- is -nargs=? not -range, so no `'<,'>`) wraps the last visual selection.
   tobj_case('cmd.normalize_link_visual_wraps_selection', function()