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, 206 insertions, 0 deletions

diff --git a/dotfiles/common/.bashrc.d/utilities.sh b/dotfiles/common/.bashrc.d/utilities.sh
new file mode 100644
index 0000000..431cac0
--- /dev/null
+++ b/dotfiles/common/.bashrc.d/utilities.sh
@@ -0,0 +1,206 @@
+# utilities.sh
+# Craig Jennings <c@cjennings.net>
+# General utility functions
+
+# =============================================================================
+# Archive Extraction
+# =============================================================================
+extract() {
+    if [ -f "$1" ]; then
+        case "$1" in
+            *.tar.bz2)   tar xjf "$1"    ;;
+            *.tar.gz)    tar xzf "$1"    ;;
+            *.bz2)       bunzip2 "$1"    ;;
+            *.rar)       rar x "$1"      ;;
+            *.gz)        gunzip "$1"     ;;
+            *.tar)       tar xf "$1"     ;;
+            *.tbz2)      tar xjf "$1"    ;;
+            *.tgz)       tar xzf "$1"    ;;
+            *.zip)       unzip "$1"      ;;
+            *.Z)         uncompress "$1" ;;
+            *)           echo "$1 cannot be extracted via extract()" ;;
+        esac
+    else
+        echo "$1 is not a valid file"
+    fi
+}
+
+# =============================================================================
+# Archive Compression
+# =============================================================================
+compress() {
+    if [ $# -ne 2 ]; then
+        echo "Usage: compress <format> <file_or_directory>"
+        echo "Formats: tar.bz2, tar.gz, bz2, tar, tbz2, tgz, zip, gz, Z"
+        return 1
+    fi
+
+    format="$1"
+    target="$2"
+
+    if [ ! -e "$target" ]; then
+        echo "Error: '$target' does not exist"
+        return 1
+    fi
+
+    basename=$(basename "$target")
+
+    case "$format" in
+        tar.bz2|tbz2) output="${basename}.tar.bz2" ;;
+        tar.gz|tgz)   output="${basename}.tar.gz" ;;
+        bz2)          output="${target}.bz2" ;;
+        gz)           output="${target}.gz" ;;
+        tar)          output="${basename}.tar" ;;
+        zip)          output="${basename}.zip" ;;
+        Z)            output="${target}.Z" ;;
+        *)
+            echo "Error: Unknown format '$format'"
+            return 1
+            ;;
+    esac
+
+    if [ -e "$output" ]; then
+        printf "Warning: '%s' already exists. Overwrite? (y/N): " "$output"
+        read -r response
+        case "$response" in
+            [yY]|[yY][eE][sS]) rm -f "$output" ;;
+            *) echo "Aborted." && return 1 ;;
+        esac
+    fi
+
+    case "$format" in
+        tar.bz2|tbz2) tar -cjf "$output" "$target" ;;
+        tar.gz|tgz)   tar -czf "$output" "$target" ;;
+        bz2)
+            [ -d "$target" ] && echo "Error: bz2 only works on files" && return 1
+            bzip2 -k "$target"
+            ;;
+        gz)
+            [ -d "$target" ] && echo "Error: gz only works on files" && return 1
+            gzip -k "$target"
+            ;;
+        tar)          tar -cf "$output" "$target" ;;
+        zip)
+            [ -d "$target" ] && zip -r "$output" "$target" || zip "$output" "$target"
+            ;;
+        Z)
+            [ -d "$target" ] && echo "Error: Z only works on files" && return 1
+            command compress -c "$target" > "$output"
+            ;;
+    esac
+
+    [ $? -eq 0 ] && echo "Created $output" || echo "Compression failed"
+}
+
+# =============================================================================
+# DD Helper
+# =============================================================================
+dd_with_bs() {
+    OUT_DIR=$(dirname "$2")
+    if [ ! -e "$1" ] || [ ! -e "$OUT_DIR" ]; then
+        echo "$1 or $OUT_DIR doesn't exist"
+        return 1
+    fi
+    IN_BS=$(stat -c "%o" "$1")
+    OUT_BS=$(stat -c "%o" "$OUT_DIR")
+    echo dd \"if=$1\" \"of=$2\" \"ibs=$IN_BS\" \"obs=$OUT_BS\"
+}
+
+# =============================================================================
+# Clock, Timer, Alarm, Stopwatch
+# =============================================================================
+export BEEP="/usr/share/sounds/freedesktop/stereo/bell.oga"
+alias beep='paplay $BEEP'
+
+clock() {
+    while true; do
+        tput clear
+        echo ""
+        date +" %l : %M %p" | figlet -f roman -w 200
+        sleep 1
+    done
+}
+
+timer() {
+    if [ "$#" -lt 2 ]; then
+        echo "Pass the time and a notification. Example: timer 1h30m Parking expiring"
+        return 1
+    fi
+    message="${*:2}"
+    start_time=$(date +"%H:%M:%S %p")
+    printf "\nStarting %s timer at %s\n" "$1" "$start_time"
+    snore "$1" && paplay "$BEEP" && notify-send "Timer" "$message"
+}
+
+alarm() {
+    if [ "$#" -lt 2 ]; then
+        echo "Pass both the time and a message. Example: alarm 1:45pm Time to eat!"
+        return 1
+    fi
+
+    if ! date -d "$1" >/dev/null 2>&1; then
+        echo "Invalid time: $1"
+        return 1
+    fi
+
+    echo "paplay \$BEEP && notify-send \"Alarm\" \"$*\"" | at "$1" >/dev/null 2>&1
+    echo ""
+    echo "Alarm '${*:2}' is queued for $1."
+    echo "To see all alarms: atq"
+    echo "To remove an alarm: atrm <number>"
+    echo ""
+}
+
+# Stopwatch
+sw_start_time=0
+sw_started=0
+
+swreset() {
+    sw_start_time=0
+    sw_started=0
+    echo "Stopwatch reset"
+}
+
+swshow() {
+    if [ "$sw_started" = 0 ]; then
+        echo "Error: Stopwatch not started" >&2
+        return 1
+    fi
+
+    current_time=$(date +%s)
+    elapsed_time=$((current_time - sw_start_time))
+
+    if [ "$elapsed_time" -lt 60 ]; then
+        echo "Elapsed time: $elapsed_time seconds"
+    elif [ "$elapsed_time" -lt 3600 ]; then
+        minutes=$((elapsed_time / 60))
+        seconds=$((elapsed_time % 60))
+        echo "Elapsed time: $minutes minutes, $seconds seconds"
+    else
+        hours=$((elapsed_time / 3600))
+        minutes=$(((elapsed_time / 60) % 60))
+        seconds=$((elapsed_time % 60))
+        echo "Elapsed time: $hours hours, $minutes minutes, $seconds seconds"
+    fi
+}
+
+swstop() {
+    swshow
+    swreset
+}
+
+swstart() {
+    if [ "$sw_started" = 1 ]; then
+        printf "Stopwatch is already started. Reset? (y/n): "
+        read -r answer
+        case "$answer" in
+            [yY]) swreset ;;
+            [nN]) echo "Stopwatch not reset." && swshow && return ;;
+            *) echo "Error: Invalid input." >&2 && return 1 ;;
+        esac
+    fi
+
+    sw_started=1
+    sw_start_time=$(date +%s)
+    printf "Stopwatch started at %s\n\n" "$(date +"%H:%M:%S %p")"
+}