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, 33 deletions

diff --git a/dotfiles/system/.zsh/modules/Test/B08shift.ztst b/dotfiles/system/.zsh/modules/Test/B08shift.ztst
deleted file mode 100644
index 0aa9226..0000000
--- a/dotfiles/system/.zsh/modules/Test/B08shift.ztst
+++ /dev/null
@@ -1,33 +0,0 @@
-# Test the shift builtin.
-
-%test
-
-  set -- one two three four five six seven eight nine ten
-  shift
-  print $*
-  shift 2
-  print $*
-  shift -p 3
-  print $*
-  shift -p
-  print $*
-0:shifting positional parameters
->two three four five six seven eight nine ten
->four five six seven eight nine ten
->four five six seven
->four five six
-
-  array=(yan tan tether mether pip azer sezar akker conter dick)
-  shift 2 array
-  print $array
-  shift array
-  print $array
-  shift -p 3 array
-  print $array
-  shift -p array
-  print $array
-0:shifting array
->tether mether pip azer sezar akker conter dick
->mether pip azer sezar akker conter dick
->mether pip azer sezar
->mether pip azer