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, 27 deletions

diff --git a/dotfiles/system/.zsh/modules/Test/runtests.zsh b/dotfiles/system/.zsh/modules/Test/runtests.zsh
deleted file mode 100644
index 562234d..0000000
--- a/dotfiles/system/.zsh/modules/Test/runtests.zsh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/zsh -f
-
-emulate zsh
-
-# Run all specified tests, keeping count of which succeeded.
-# The reason for this extra layer above the test script is to
-# protect from catastrophic failure of an individual test.
-# We could probably do that with subshells instead.
-
-integer success failure skipped retval
-for file in "${(f)ZTST_testlist}"; do
-  $ZTST_exe +Z -f $ZTST_srcdir/ztst.zsh $file
-  retval=$?
-  if (( $retval == 2 )); then
-    (( skipped++ ))
-  elif (( $retval )); then
-    (( failure++ ))
-  else
-    (( success++ ))
-  fi
-done
-print "**************************************
-$success successful test script${${success:#1}:+s}, \
-$failure failure${${failure:#1}:+s}, \
-$skipped skipped
-**************************************"
-return $(( failure ? 1 : 0 ))