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, 73 deletions

diff --git a/dotfiles/system/.zsh/modules/patch_cfgac.diff b/dotfiles/system/.zsh/modules/patch_cfgac.diff
deleted file mode 100644
index 50624bc..0000000
--- a/dotfiles/system/.zsh/modules/patch_cfgac.diff
+++ /dev/null
@@ -1,73 +0,0 @@
-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])
-