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, 69 insertions, 0 deletions

diff --git a/dotfiles/common/.local/bin/msmtp-runqueue.sh b/dotfiles/common/.local/bin/msmtp-runqueue.sh
new file mode 100755
index 0000000..1200610
--- /dev/null
+++ b/dotfiles/common/.local/bin/msmtp-runqueue.sh
@@ -0,0 +1,69 @@
+#!/usr/bin/env sh
+
+QUEUEDIR="$HOME/.msmtpqueue"
+LOCKFILE="$QUEUEDIR/.lock"
+MAXWAIT=120
+
+OPTIONS=$*
+
+# eat some options that would cause msmtp to return 0 without sendmail mail
+case "$OPTIONS" in 
+	*--help*)
+	echo "$0: send mails in $QUEUEDIR"
+	echo "Options are passed to msmtp"
+	exit 0
+	;;
+	*--version*)
+	echo "$0: unknown version"
+	exit 0
+	;;
+esac
+
+# wait for a lock that another instance has set
+WAIT=0
+while [ -e "$LOCKFILE" ] && [ "$WAIT" -lt "$MAXWAIT" ]; do
+	sleep 1
+	WAIT="$((WAIT + 1))"
+done
+if [ -e "$LOCKFILE" ]; then
+	echo "Cannot use $QUEUEDIR: waited $MAXWAIT seconds for"
+	echo "lockfile $LOCKFILE to vanish, giving up."
+	echo "If you are sure that no other instance of this script is"
+	echo "running, then delete the lock file."
+	exit 1
+fi
+
+# change into $QUEUEDIR 
+cd "$QUEUEDIR" || exit 1
+
+# check for empty queuedir
+if [ "$(echo ./*.mail)" = './*.mail' ]; then
+	echo "No mails in $QUEUEDIR"
+	exit 0
+fi
+
+# lock the $QUEUEDIR
+touch "$LOCKFILE" || exit 1
+
+# process all mails
+for MAILFILE in *.mail; do
+	MSMTPFILE="$(echo $MAILFILE | sed -e 's/mail/msmtp/')"
+	echo "*** Sending $MAILFILE to $(sed -e 's/^.*-- \(.*$\)/\1/' $MSMTPFILE) ..."
+	if [ ! -f "$MSMTPFILE" ]; then
+		echo "No corresponding file $MSMTPFILE found"
+		echo "FAILURE"
+		continue
+	fi
+	msmtp $OPTIONS $(cat "$MSMTPFILE") < "$MAILFILE"
+	if [ $? -eq 0 ]; then
+		rm "$MAILFILE" "$MSMTPFILE"
+		echo "$MAILFILE sent successfully"
+	else
+		echo "FAILURE"
+	fi
+done
+
+# remove the lock
+rm -f "$LOCKFILE"
+
+exit 0