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, 43 insertions, 0 deletions

diff --git a/dotfiles/common/.zsh/modules/Config/clean.mk b/dotfiles/common/.zsh/modules/Config/clean.mk
new file mode 100644
index 0000000..918a84f
--- /dev/null
+++ b/dotfiles/common/.zsh/modules/Config/clean.mk
@@ -0,0 +1,43 @@
+#
+# Makefile fragment for cleanup
+#
+# Copyright (c) 1995-1997 Richard Coleman
+# All rights reserved.
+#
+# Permission is hereby granted, without written agreement and without
+# license or royalty fees, to use, copy, modify, and distribute this
+# software and to distribute modified versions of this software for any
+# purpose, provided that the above copyright notice and the following
+# two paragraphs appear in all copies of this software.
+#
+# In no event shall Richard Coleman or the Zsh Development Group be liable
+# to any party for direct, indirect, special, incidental, or consequential
+# damages arising out of the use of this software and its documentation,
+# even if Richard Coleman and the Zsh Development Group have been advised of
+# the possibility of such damage.
+#
+# Richard Coleman and the Zsh Development Group specifically disclaim any
+# warranties, including, but not limited to, the implied warranties of
+# merchantability and fitness for a particular purpose.  The software
+# provided hereunder is on an "as is" basis, and Richard Coleman and the
+# Zsh Development Group have no obligation to provide maintenance,
+# support, updates, enhancements, or modifications.
+#
+
+mostlyclean: mostlyclean-recursive mostlyclean-here
+clean:       clean-recursive       clean-here
+distclean:   distclean-recursive   distclean-here
+realclean:   realclean-recursive   realclean-here
+
+mostlyclean-here:
+clean-here: mostlyclean-here
+distclean-here: clean-here
+realclean-here: distclean-here
+
+mostlyclean-recursive clean-recursive distclean-recursive realclean-recursive:
+	@subdirs='$(SUBDIRS)'; if test -n "$$subdirs"; then \
+	  target=`echo $@ | sed s/-recursive//`; \
+	  for subdir in $$subdirs; do \
+	    (cd $$subdir && $(MAKE) $(MAKEDEFS) $$target) || exit 1; \
+	  done; \
+	fi