refactor(dotfiles): rename system/ to common/ and remove unused configs

Rename dotfiles/system to dotfiles/common for clarity - indicates
shared dotfiles used across all desktop environments (DWM, Hyprland).

Removed config directories for uninstalled applications:
- ghostty (using different terminal)
- lf (using ranger instead)
- mopidy (using mpd instead)
- nitrogen (X11-only, obsolete for Wayland)
- pychess (not installed)
- JetBrains (not installed via archsetup)
- youtube-dl (using yt-dlp with different config location)

Kept audacious config for potential future use.

Updated all references in archsetup, CLAUDE.md, todo.org, and
validation.sh.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 0 insertions, 112 deletions

diff --git a/dotfiles/system/.zsh/modules/Test/D05array.ztst b/dotfiles/system/.zsh/modules/Test/D05array.ztst
deleted file mode 100644
index 1fa607d..0000000
--- a/dotfiles/system/.zsh/modules/Test/D05array.ztst
+++ /dev/null
@@ -1,112 +0,0 @@
-# Tests for array indexing
-
-%prep
-
-  foo=(a b c d e f g)
-  arr=(foo bar baz)
-  mkdir array.tmp
-  touch array.tmp/{1..9}
-
-%test
-
-  echo .$foo[1].
-0:The first element
->.a.
-
-  echo .$foo[1,4].
-0:Normal multi-item indexing
->.a b c d.
-
-  echo .$foo[1,0].
-0:This should be empty
->..
-
-  echo .$foo[4,1].
-0:Another empty slice
->..
-
-  echo .$foo[1,-8].
-0:An empty slice with a negative end
->..
-
-  echo .$foo[0].
-0:Treat 0 as empty
->..
-
-  echo .$foo[0,0].
-0:Treat 0,0 as empty
->..
-
-  echo .$foo[0,1].
-0:Another weird way to access the first element
->.a.
-
-  echo .$foo[3].
-0:An inner element
->.c.
-
-  echo .$foo[2,2].
-0:Another inner element
->.b.
-
-  echo .$foo[2,-4].
-0:A slice with a negative end
->.b c d.
-
-  echo .$foo[-4,5].
-0:A slice with a negative start
->.d e.
-
-  echo .$foo[-6,-2].
-0:A slice with a negative start and end
->.b c d e f.
-
-  echo .${${arr[2]}[1]}.
-  echo .${${arr[-2]}[1]}.
-  echo .${${arr[2,2]}[1]}.
-  echo .${${arr[-2,-2]}[1]}.
-  echo .${${arr[2,-2]}[1]}. 
-  echo .${${arr[-2,2]}[1]}. 
-0:Slices should return an array, elements a scalar
->.b.
->.b.
->.bar.
->.bar.
->.bar.
->.bar.
-
-  setopt ksh_arrays
-  echo .${foo[1,2]}.
-  unsetopt ksh_arrays
-0:Ksh array indexing
->.b c.
-
-  setopt ksh_arrays
-  echo .${foo[0,1]}.
-  unsetopt ksh_arrays
-0:Ksh array indexing (ii)
->.a b.
-
-  setopt ksh_arrays
-  echo .${foo[1,-1]}.
-  unsetopt ksh_arrays
-0:Ksh array indexing (iii)
->.b c d e f g.
-
-  cd array.tmp
-  echo . ?([3,5]) .
-  cd ..
-0:Glob array indexing
->. 3 4 5 .
-
-  cd array.tmp
-  echo . ?([2,-2]) .
-  cd ..
-0:Glob array indexing (ii)
->. 2 3 4 5 6 7 8 .
-
-  cd array.tmp
-  echo . ?([-6,-4]) .
-  cd ..
-0:Glob array indexing (iii)
->. 4 5 6 .