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, 122 insertions, 0 deletions

diff --git a/dotfiles/common/.zshrc.d/fzf.sh b/dotfiles/common/.zshrc.d/fzf.sh
new file mode 100644
index 0000000..9a5a9bd
--- /dev/null
+++ b/dotfiles/common/.zshrc.d/fzf.sh
@@ -0,0 +1,122 @@
+# fzf.sh
+# Craig Jennings <c@cjennings.net>
+# FZF settings and utility functions
+
+# =============================================================================
+# Settings
+# =============================================================================
+export FZF_DEFAULT_OPTS='--height=70%'
+export FZF_DEFAULT_COMMAND='rg --files --no-ignore-vcs --hidden'
+export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
+
+# Directory paths for convenience functions
+IF_GAMES_DIR="$HOME/sync/org/text.games"
+BOOKS_DIR="$HOME/sync/books"
+
+# =============================================================================
+# Navigation
+# =============================================================================
+
+# cdff - change directory to where a file resides
+cdff() {
+    file=$(fzf +m -q "$1")
+    dir=$(dirname "$file")
+    cd "$dir" || return 1
+}
+
+# cdd - cd to directory with fzf
+cdd() {
+    destdir=$(find "${1:-.}" -path '*/\.*' -prune \
+                   -o -type d -print 2>/dev/null | fzf +m) &&
+        cd "$destdir"
+}
+
+# =============================================================================
+# System Admin
+# =============================================================================
+
+# Kill process with fzf
+kp() {
+    pid=$(ps -ef | sed 1d | eval "fzf ${FZF_DEFAULT_OPTS} -m --header='[kill:process]'" | awk '{print $2}')
+    if [ -n "$pid" ]; then
+        echo "$pid" | xargs kill -"${1:-9}"
+        kp
+    fi
+}
+
+# Install packages with fzf preview
+yinstall() {
+    yay -Slq | fzf --multi --preview 'yay -Si {1}' | xargs -ro yay -S --noconfirm
+}
+
+yinstall-skipverify() {
+    yay -Slq | fzf --multi --preview 'yay -Si {1}' | xargs -ro yay -S --noconfirm --mflags --skipinteg
+}
+
+# Remove packages with fzf preview
+yrm() {
+    yay -Qq | fzf --multi --preview 'yay -Qi {1}' | xargs -ro yay -Rns
+}
+
+# Find in file with fzf
+fif() {
+    if [ "$#" -eq 0 ]; then
+        echo "Need a string to search for!"
+        return 1
+    fi
+    rg --files-with-matches --no-messages "$1" | \
+        fzf --preview "highlight -O ansi -l {} 2>/dev/null | \
+        rg --colors 'match:bg:yellow' --ignore-case --pretty --context 10 '$1' || \
+        rg --ignore-case --pretty --context 10 '$1' {}"
+}
+
+# =============================================================================
+# Convenience
+# =============================================================================
+
+# Find and read epub book in terminal
+bk() {
+    bkfile=$(find "$BOOKS_DIR" -iname "*.epub" -print | fzf)
+    if [ -n "$bkfile" ]; then
+        epr "$bkfile"
+    fi
+}
+
+# Find and play interactive fiction game
+tg() {
+    gamefile=$(find "$IF_GAMES_DIR" -type f \( -iname "*.z[1-8]" -o -iname "*.zblorb" -o -iname "*.blorb" \) -print | fzf)
+    if [ -n "$gamefile" ]; then
+        frotz "$gamefile"
+    fi
+}
+
+# =============================================================================
+# WireGuard
+# =============================================================================
+
+wgup() {
+    # Shutdown existing connections first
+    output=$(sudo wg 2>/dev/null)
+    if [ -n "$output" ]; then
+        for iface in $(sudo wg show interfaces); do
+            sudo wg-quick down "${iface}"
+        done
+    fi
+    # Select and start new connection
+    wgfile=$(sudo find /etc/wireguard/ -iname "*.conf" -exec basename -s .conf {} \; | fzf)
+    if [ -n "$wgfile" ]; then
+        sudo wg-quick up "$wgfile"
+        sudo wg
+    fi
+}
+
+wgdown() {
+    output=$(sudo wg 2>/dev/null)
+    if [ -n "$output" ]; then
+        for iface in $(sudo wg show interfaces); do
+            sudo wg-quick down "${iface}"
+        done
+    fi
+}
+
+alias wg=wgup