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, 18 deletions

diff --git a/dotfiles/system/.config/lf/image b/dotfiles/system/.config/lf/image
deleted file mode 100755
index 77ddb5b..0000000
--- a/dotfiles/system/.config/lf/image
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-readonly ID_PREVIEW="preview"
-main() {
-	case "$1" in
-		"clear")
-			declare -p -A cmd=([action]=remove [identifier]="$ID_PREVIEW") \
-				> "$FIFO_UEBERZUG"
-			;;
-		"draw")
-			declare -p -A cmd=([action]=add [identifier]="$ID_PREVIEW" \
-				[x]="$3" [y]="$4" [max_width]="$5" [max_height]="$6" \
-				[path]="$2") > "$FIFO_UEBERZUG"
-			;;
-		"*") echo "Unknown command: '$1', '$2'" ;;
-	esac
-}
-main "$@"
-