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, 34 deletions

diff --git a/dotfiles/system/.zsh/modules/Test/B05eval.ztst b/dotfiles/system/.zsh/modules/Test/B05eval.ztst
deleted file mode 100644
index 6427d6f..0000000
--- a/dotfiles/system/.zsh/modules/Test/B05eval.ztst
+++ /dev/null
@@ -1,34 +0,0 @@
-# Tests for the eval builtin.
-# This is quite short; eval is widely tested throughout the test suite
-# and its basic behaviour is fairly straightforward.
-
-%prep
-
-  cmd='print $?'
-
-%test
-
-  false
-  eval $cmd
-0:eval retains value of $?
->1
-
-  # no point getting worked up over what the error message is...
-  ./command_not_found 2>/dev/null
-  eval $cmd
-0:eval after command not found
->127
-
-  # trick the test system
-  sp=
-  false
-  eval "
-  $sp
-  $sp
-  $sp
-  "
-0:eval with empty command resets the status
-
-  false
-  eval
-0:eval with empty command resets the status