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, 80 deletions

diff --git a/dotfiles/system/.zsh/modules/Test/A03quoting.ztst b/dotfiles/system/.zsh/modules/Test/A03quoting.ztst
deleted file mode 100644
index da3ce35..0000000
--- a/dotfiles/system/.zsh/modules/Test/A03quoting.ztst
+++ /dev/null
@@ -1,80 +0,0 @@
-%test
-  print 'single  quotes'  "double  quotes"  `echo backquotes`
-0:Simple use of quotes
->single  quotes double  quotes backquotes
-
-  foo=text
-  print -r '$foo\\\' "$foo\$foo\\\"\``echo bar`\`\"" `print -r $foo\\\``
-0:Quoting inside quotes
->$foo\\\ text$foo\"`bar`" text`
-
-  print -r $'\'ut queant laxis\'\n"resonare fibris"'
-0:$'-style quotes
->'ut queant laxis'
->"resonare fibris"
-
-  print -r $'\'a \\\' is \'a backslash\' is \'a \\\''
-0:$'-style quotes with backslashed backslashes
->'a \' is 'a backslash' is 'a \'
-
-  chars=$(print -r $'BS\\MBS\M-\\')
-  for (( i = 1; i <= $#chars; i++ )); do
-    char=$chars[$i]
-    print $(( [#16] #char ))
-  done
-0:$'-style quote with metafied backslash
->16#42
->16#53
->16#5C
->16#4D
->16#42
->16#53
->16#DC
-
-  print -r ''''
-  setopt rcquotes
-# We need to set rcquotes here for the next example since it is
-# needed while parsing.
-0:No RC_QUOTES with single quotes
->
-
-  print -r ''''
-  unsetopt rcquotes
-0:Yes RC_QUOTES with single quotes
->'
-# ' Deconfuse Emacs quoting rules
-
-  print '<\u0041>'
-  printf '%s\n' $'<\u0042>'
-  print '<\u0043>'
-  printf '%s\n' $'<\u0044>'
-0:\u in both print and printf
-><A>
-><B>
-><C>
-><D>
-
-  null1="$(print -r a$'b\0c'd)"
-  null2="$(setopt posixstrings; print -r a$'b\0c'd)"
-  for string in $null1 $null2; do
-    print ":"
-    for (( i = 1; i <= $#string; i++ )); do
-      char=$string[$i]
-      print $(( [#16] #char ))
-    done
-  done
-0:Embedded null characters in $'...' strings.
->:
->16#61
->16#62
->16#0
->16#63
->16#64
->:
->16#61
->16#62
->16#64
-
- () { print $# } '' "" $''
-0:$'' should not be elided, in common with other empty quotes
->3