Add automated LSTM retraining

tools/install_lstm_retrainer_systemd.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+SYSTEMD_DIR="$HOME/.config/systemd/user"
+SERVICE_NAME="tradebot-lstm-retrainer.service"
+TIMER_NAME="tradebot-lstm-retrainer.timer"
+
+mkdir -p "$SYSTEMD_DIR"
+
+cat > "$SYSTEMD_DIR/$SERVICE_NAME" <<EOF
+[Unit]
+Description=Retrain TradeBot LSTM forecast parameters
+
+[Service]
+Type=oneshot
+WorkingDirectory=$REPO_ROOT
+ExecStart=$REPO_ROOT/tools/run_lstm_retrain.sh
+EOF
+
+cat > "$SYSTEMD_DIR/$TIMER_NAME" <<EOF
+[Unit]
+Description=Retrain TradeBot LSTM forecast parameters every 6 hours
+
+[Timer]
+OnBootSec=5min
+OnUnitActiveSec=6h
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+EOF
+
+systemctl --user daemon-reload
+systemctl --user enable --now "$TIMER_NAME"
+
+echo "Enabled user timer $TIMER_NAME. Check with: systemctl --user list-timers $TIMER_NAME"