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>

ftplugin/vimwiki.vim

@@ -19,7 +19,12 @@ setlocal formatoptions+=ron
 setlocal suffixesadd=.wiki
 setlocal iskeyword+=-
 setlocal conceallevel=2
-setlocal concealcursor=nc
+" Reveal the cursor line's raw markup in normal mode so left/right motions
+" move over visible characters instead of stalling on hidden conceal regions
+" (e.g. the `[[`, target, and `]]` of a wikilink). Other lines stay concealed.
+" Insert/visual already reveal the cursor line; only incsearch (`c`) keeps it
+" concealed so `/` highlighting isn't disrupted.
+setlocal concealcursor=c
 
 let b:undo_ftplugin = 'setlocal commentstring< comments< formatoptions< suffixesadd< iskeyword< conceallevel< concealcursor<'