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, 67 deletions

diff --git a/dotfiles/system/.config/lf/draw_img b/dotfiles/system/.config/lf/draw_img
deleted file mode 100755
index 5a70d5e..0000000
--- a/dotfiles/system/.config/lf/draw_img
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/usr/bin/env bash
-
-clear_screen() {
-    printf '\e[%sH\e[9999C\e[1J%b\e[1;%sr' \
-           "$((LINES-2))" "${TMUX:+\e[2J}" "$max_items"
-}
-
-# Get a file's mime_type.
-mime_type=$(file -bi "$1")
-
-# File isn't an image file, give warning.
-if [[ $mime_type != image/* ]]; then
-    lf -remote "send $id echoerr 'Not an image'"
-    exit
-fi
-
-w3m_paths=(/usr/{local/,}{lib,libexec,lib64,libexec64}/w3m/w3mi*)
-read -r w3m _ < <(type -p w3mimgdisplay "${w3m_paths[@]}")
-read -r LINES COLUMNS < <(stty size)
-
-# Get terminal window size in pixels and set it to WIDTH and HEIGHT.
-export $(xdotool getactivewindow getwindowgeometry --shell)
-
-# Get the image size in pixels.
-read -r img_width img_height < <("$w3m" <<< "5;${CACHE:-$1}")
-
-((img_width > WIDTH)) && {
-    ((img_height=img_height*WIDTH/img_width))
-    ((img_width=WIDTH))
-}
-
-((img_height > HEIGHT)) && {
-    ((img_width=img_width*HEIGHT/img_height))
-    ((img_height=HEIGHT))
-}
-
-# Variable needed for centering image.
-HALF_HEIGHT=$(expr $HEIGHT / 2)
-HALF_WIDTH=$(expr $WIDTH / 2)
-HALF_IMG_HEIGHT=$(expr $img_height / 2)
-HALF_IMG_WIDTH=$(expr $img_width / 2)
-X_POS=$(expr $HALF_WIDTH - $HALF_IMG_WIDTH)
-Y_POS=$(expr $HALF_HEIGHT - $HALF_IMG_HEIGHT)
-
-clear_screen
-# Hide the cursor.
-printf '\e[?25l'
-
-# Display the image.
-printf '0;1;%s;%s;%s;%s;;;;;%s\n3;\n4\n' \
-    ${X_POS:-0} \
-    ${Y_POS:-0} \
-    "$img_width" \
-    "$img_height" \
-    "${CACHE:-$1}" | "$w3m" &>/dev/null
-
-# Wait for user input.
-read -ern 1
-
-# Clear the image.
-printf '6;%s;%s;%s;%s\n3;' \
-    "${X_POS:-0}" \
-    "${Y_POS:-0}" \
-    "$WIDTH" \
-    "$HEIGHT" | "$w3m" &>/dev/null
-
-clear_screen