test(client): cover bare gl/gL remove-checkbox + command-driven remove-done

Swap the gl<Space>/gL<Space> surface assertions for bare gl/gL; add behavioral
cases for gl (item) and gL (whole list) remove-checkbox, and drive remove-done
through :NuwikiRemoveDone / :NuwikiRemoveDone! now that it is command-only.

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

development/tests/test-keymaps-vim.vim

@@ -188,7 +188,7 @@ let s:mapping_surface = [
       \ ['<C-Space>', 'nx'], ['<C-@>', 'nx'], ['<Nul>', 'nx'],
       \ ['gnt', 'n'], ['gln', 'nx'], ['glp', 'nx'], ['glx', 'nx'],
       \ ['glh', 'n'], ['gll', 'n'], ['gLh', 'n'], ['gLl', 'n'],
-      \ ['glr', 'n'], ['gLr', 'n'], ['gl<Space>', 'n'], ['gL<Space>', 'n'],
+      \ ['glr', 'n'], ['gLr', 'n'], ['gl', 'n'], ['gL', 'n'],
       \ ['gl-', 'n'], ['gL-', 'n'], ['gl*', 'n'], ['gL*', 'n'],
       \ ['gl#', 'n'], ['gL#', 'n'], ['gl1', 'n'], ['gL1', 'n'],
       \ ['gli', 'n'], ['gLi', 'n'], ['glI', 'n'], ['gLI', 'n'],