feat(commands): VimwikiTable -nargs=* + Index/TabIndex -count=0 (P3 parity)

Two command-attribute parity fixes (audited against upstream vimwiki master):

- VimwikiTable / NuwikiTable were -nargs=1 and called table_insert() with no
  args, so `:VimwikiTable 4 3` raised E488 and cols/rows were unreachable.
  All four defs (Vim+Neovim × Vimwiki+Nuwiki) are now -nargs=* and forward
  <f-args>; the backing table_insert already parsed cols (a:1) + rows (a:2).

- VimwikiIndex/TabIndex (and Nuwiki forms) switch from bare -count to
  upstream's -count=0. Behavior is unchanged (both default count to 0;
  wiki_index already maps a count to the 1-indexed wiki number) — this just
  matches the upstream declaration exactly.

Tests: cmd.VimwikiTable_passes_cols_and_rows (test-keymaps.lua — asserts a
4-col/3-row table) and cmd.VimwikiTable_accepts_cols_rows (test-keymaps-vim.vim
— no E488). gap doc updated.

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

development/tests/test-keymaps-vim.vim

@@ -632,6 +632,25 @@ unlet g:_nuwiki_target
 " follow_link_drop() request mechanism; its end-to-end coverage is the manual
 " development/start-vim.sh check.
 
+" ===== :VimwikiTable -nargs=* (cols+rows) =====
+" Was -nargs=1, which raised E488 on `:VimwikiTable 4 3`. The table insert
+" itself is an LSP roundtrip (no server in this headless harness), so we only
+" assert the arg parse succeeds — i.e. no E488 trailing-characters error.
+call s:set_buf([''])
+call cursor(1, 1)
+let s:tbl_err = ''
+try
+  silent VimwikiTable 4 3
+catch /E488/
+  let s:tbl_err = v:exception
+catch
+  " A non-E488 error (e.g. no LSP attached) is expected and fine here.
+endtry
+call s:record(
+      \ s:tbl_err ==# '' ? 1 : 0,
+      \ 'cmd.VimwikiTable_accepts_cols_rows',
+      \ 'err=' . s:tbl_err)
+
 " ===== Wrap up =====
 
 call add(s:results, '')

development/tests/test-keymaps.lua

@@ -808,6 +808,32 @@ vim.defer_fn(function()
       error('range toggle incomplete: ' .. vim.inspect(vim.api.nvim_buf_get_lines(0, 0, -1, false)))
     end
   end)
+  -- `:VimwikiTable {cols} [rows]` — now -nargs=* (was -nargs=1, which dropped
+  -- the args entirely). A 4-col table has 5 pipes per row; 3 data rows give
+  -- header + separator + 3 = 5 table lines.
+  tobj_case('cmd.VimwikiTable_passes_cols_and_rows', function()
+    set_buf({ '' })
+    vim.api.nvim_win_set_cursor(0, { 1, 0 })
+    vim.cmd('VimwikiTable 4 3')
+    local tbl = {}
+    local done = vim.wait(2000, function()
+      tbl = {}
+      for _, l in ipairs(vim.api.nvim_buf_get_lines(0, 0, -1, false)) do
+        if l:find('|', 1, true) then tbl[#tbl + 1] = l end
+      end
+      return #tbl >= 5
+    end, 30)
+    if not done then
+      error('table not inserted: ' .. vim.inspect(vim.api.nvim_buf_get_lines(0, 0, -1, false)))
+    end
+    local pipes = select(2, tbl[1]:gsub('|', ''))
+    if pipes ~= 5 then
+      error('want 4 cols (5 pipes), got ' .. pipes .. ': ' .. tbl[1])
+    end
+    if #tbl ~= 5 then
+      error('want 5 table lines (hdr+sep+3 rows), got ' .. #tbl)
+    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()

development/vimwiki-gap.md

@@ -177,7 +177,12 @@ fix site.
 - [ ] `VimwikiReturn` — no Ex-command (mapping-driven only). _Fix:_ `ftplugin/vimwiki.vim`.
 - [ ] `VimwikiTableAlignQ` vs `AlignW` collapsed to one `table_align` — `gqq`
   (align) vs `gww` (align w/o resize) distinction lost.
-- [ ] `VimwikiTable` is `-nargs=1` vs upstream `-nargs=*` (can't pass cols+rows).
+- [x] `VimwikiTable` was `-nargs=1` vs upstream `-nargs=*` (couldn't pass
+  cols+rows). _Fix:_ all four defs (Vim+Neovim × Vimwiki+Nuwiki) are now
+  `-nargs=*` and forward `<f-args>` to `table_insert` (which already parsed
+  cols/rows). Covered by `cmd.VimwikiTable_passes_cols_and_rows`
+  (`test-keymaps.lua`, asserts a `:VimwikiTable 4 3` → 4-col, 3-row table) and
+  `cmd.VimwikiTable_accepts_cols_rows` (`test-keymaps-vim.vim`, no E488).
 - [ ] `VimwikiListChangeLvl` is `-nargs=?` vs upstream `-range -nargs=+`.
 - [x] `VimwikiRebuildTags` `-bang` ("rebuild all") — `:…RebuildTags!` now passes
   `{ all: true }`; the server (`tags_rebuild`) re-indexes **every** configured
@@ -235,9 +240,12 @@ fix site.
 - [ ] **Diary-note family lacks `-count`** _(new, 2026-05-31 re-audit)_ — upstream's
   `:Vimwiki{Make,TabMake,MakeYesterday,MakeTomorrow}DiaryNote` carry `-count=0`
   (the count selects the wiki number); nuwiki's diary-note commands declare no
-  count in either branch, and `Index`/`TabIndex` use bare `-count` vs upstream
-  `-count=0`. _Fix:_ `ftplugin/vimwiki.vim` diary block (both branches) + thread
-  the count into `diary_today/yesterday/tomorrow`.
+  count in either branch. _Fix:_ `ftplugin/vimwiki.vim` diary block (both
+  branches) + thread the count into `diary_today/yesterday/tomorrow` + server
+  diary commands (accept an optional `wiki` selector). _(The `Index`/`TabIndex`
+  half is done: all four defs now use upstream's `-count=0` instead of bare
+  `-count`; `wiki_index`/`wiki_tab_index` already map the count to the wiki
+  number.)_
 - [ ] **No `-complete=` specs** _(new)_ — upstream attaches command-line completion
   to `VimwikiGoto` (links), `VimwikiRenameFile` (files), `VimwikiColorize`
   (colours), and the tag commands. nuwiki defines none, so `<Tab>` completion of