fix(conceal): reveal cursor line in normal mode for natural navigation

concealcursor=nc kept the cursor's own line concealed in normal mode, so
the hidden characters of a wikilink ([[, target, ]]) still occupied buffer
columns — each l/h moved one hidden position with no visible movement,
making the cursor feel stuck. Drop the `n` flag (keep `c` for incsearch) so
the cursor line shows raw markup in normal mode while other lines stay
concealed.

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

scripts/test-keymaps-vim.vim

@@ -307,6 +307,20 @@ call s:record(
       \ 'folding.starts_with_all_folds_open',
       \ '&l:foldlevel=' . &l:foldlevel)
 
+" ===== Conceal =====
+
+" The ftplugin reveals the cursor line in normal mode (concealcursor has no
+" `n`) so left/right motions move over visible characters instead of stalling
+" on hidden conceal regions like a wikilink's `[[`/`]]`.
+call s:record(
+      \ &l:conceallevel == 2 ? 1 : 0,
+      \ 'conceal.level_is_two',
+      \ '&l:conceallevel=' . &l:conceallevel)
+call s:record(
+      \ &l:concealcursor !~# 'n' ? 1 : 0,
+      \ 'conceal.cursor_line_revealed_in_normal_mode',
+      \ '&l:concealcursor=' . &l:concealcursor)
+
 " ===== Wrap up =====
 
 call add(s:results, '')