Replace cron suggestion with systemd timer for kiwix updates

User units in systemd/ with an install.sh that symlinks and enables.
Persistent=true means missed runs (machine off) catch up on next boot.
Logs via journald: journalctl --user -u kiwix-update.service

https://claude.ai/code/session_012gDnantBmFTWZGCiKyjazx

systemd/install.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Install kiwix-update systemd user units and enable the timer
+set -e
+
+UNIT_DIR="$HOME/.config/systemd/user"
+SRC="$(cd "$(dirname "$0")" && pwd)"
+
+mkdir -p "$UNIT_DIR"
+ln -sf "$SRC/kiwix-update.service" "$UNIT_DIR/kiwix-update.service"
+ln -sf "$SRC/kiwix-update.timer"   "$UNIT_DIR/kiwix-update.timer"
+
+systemctl --user daemon-reload
+systemctl --user enable --now kiwix-update.timer
+
+echo ""
+systemctl --user list-timers kiwix-update.timer
+echo ""
+echo "Run manually anytime:  systemctl --user start kiwix-update.service"
+echo "Logs:                  journalctl --user -u kiwix-update.service"