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, 27 insertions, 0 deletions

diff --git a/dotfiles/common/.zsh/modules/Test/runtests.zsh b/dotfiles/common/.zsh/modules/Test/runtests.zsh
new file mode 100644
index 0000000..562234d
--- /dev/null
+++ b/dotfiles/common/.zsh/modules/Test/runtests.zsh
@@ -0,0 +1,27 @@
+#!/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 ))