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, 73 insertions, 0 deletions

diff --git a/dotfiles/common/.zsh/modules/patch_cfgac.diff b/dotfiles/common/.zsh/modules/patch_cfgac.diff
new file mode 100644
index 0000000..50624bc
--- /dev/null
+++ b/dotfiles/common/.zsh/modules/patch_cfgac.diff
@@ -0,0 +1,73 @@
+diff --git a/module/configure.ac b/module/configure.ac
+index 298af02..b116b80 100644
+--- a/module/configure.ac
++++ b/module/configure.ac
+@@ -437,11 +437,6 @@ fi],
+ [AC_DEFINE(DEFAULT_READNULLCMD,"more")]
+ )
+ 
+-dnl Do you want to look for pcre support?
+-AC_ARG_ENABLE(pcre,
+-AC_HELP_STRING([--enable-pcre],
+-[enable the search for the pcre library (may create run-time library dependencies)]))
+-
+ dnl Do you want to look for capability support?
+ AC_ARG_ENABLE(cap,
+ AC_HELP_STRING([--enable-cap],
+@@ -672,16 +667,6 @@ AC_HEADER_STAT
+ AC_HEADER_SYS_WAIT
+ 
+ oldcflags="$CFLAGS"
+-if test x$enable_pcre = xyes; then
+-AC_CHECK_PROG([PCRECONF], pcre-config, pcre-config)
+-dnl Typically (meaning on this single RedHat 9 box in front of me)
+-dnl pcre-config --cflags produces a -I output which needs to go into
+-dnl CPPFLAGS else configure's preprocessor tests don't pick it up,
+-dnl producing a warning.
+-if test "x$ac_cv_prog_PCRECONF" = xpcre-config; then
+-  CPPFLAGS="$CPPFLAGS `pcre-config --cflags`"
+-fi
+-fi
+ 
+ AC_CHECK_HEADERS(sys/time.h sys/times.h sys/select.h termcap.h termio.h \
+ 		 termios.h sys/param.h sys/filio.h string.h memory.h \
+@@ -689,7 +674,7 @@ AC_CHECK_HEADERS(sys/time.h sys/times.h sys/select.h termcap.h termio.h \
+ 		 locale.h errno.h stdio.h stdarg.h varargs.h stdlib.h \
+ 		 unistd.h sys/capability.h \
+ 		 utmp.h utmpx.h sys/types.h pwd.h grp.h poll.h sys/mman.h \
+-		 netinet/in_systm.h pcre.h langinfo.h wchar.h stddef.h \
++		 netinet/in_systm.h langinfo.h wchar.h stddef.h \
+ 		 sys/stropts.h iconv.h ncurses.h ncursesw/ncurses.h \
+ 		 ncurses/ncurses.h)
+ if test x$dynamic = xyes; then
+@@ -932,12 +917,6 @@ if test "x$ac_found_iconv" = "xyes"; then
+     [Define as const if the declaration of iconv() needs const.])
+ fi
+ 
+-if test x$enable_pcre = xyes; then
+-dnl pcre-config should probably be employed here
+-dnl AC_SEARCH_LIBS(pcre_compile, pcre)
+-  LIBS="`$ac_cv_prog_PCRECONF --libs` $LIBS"
+-fi
+-
+ dnl ---------------------
+ dnl CHECK TERMCAP LIBRARY
+ dnl ---------------------
+@@ -1311,7 +1290,6 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
+ 	       pathconf sysconf \
+ 	       tgetent tigetflag tigetnum tigetstr setupterm initscr resize_term \
+ 	       getcchar setcchar waddwstr wget_wch win_wch use_default_colors \
+-	       pcre_compile pcre_study pcre_exec \
+ 	       nl_langinfo \
+ 	       erand48 open_memstream \
+ 	       posix_openpt \
+@@ -3278,8 +3256,7 @@ AC_SUBST_FILE(CONFIG_MK)dnl
+ AC_SUBST_FILE(DEFS_MK)dnl
+ AC_SUBST_FILE(VERSION_MK)dnl
+ 
+-AC_CONFIG_FILES(Config/defs.mk Makefile Doc/Makefile Etc/Makefile \
+-Src/Makefile Test/Makefile)
++AC_CONFIG_FILES(Config/defs.mk Makefile Src/Makefile Test/Makefile)
+ AC_CONFIG_COMMANDS([config.modules], [. ./config.modules.sh])
+ AC_CONFIG_COMMANDS([stamp-h], [echo >stamp-h])
+