added deploy watch, pull script. minor refactors

scripts/uninstall-deploy-watch.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Stops and removes the deploy-watch systemd service installed by
+# install-deploy-watch.sh.
+#
+# Usage: sudo ./scripts/uninstall-deploy-watch.sh
+
+set -euo pipefail
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "Run this with sudo (modifies /etc/systemd/system)." >&2
+  exit 1
+fi
+
+UNIT_NAME="deploy-watch-hwilliams-dev.service"
+UNIT_DEST="/etc/systemd/system/$UNIT_NAME"
+
+if systemctl list-unit-files | grep -q "^$UNIT_NAME"; then
+  systemctl disable --now "$UNIT_NAME"
+else
+  echo "$UNIT_NAME is not installed; nothing to disable."
+fi
+
+if [ -f "$UNIT_DEST" ]; then
+  rm "$UNIT_DEST"
+  systemctl daemon-reload
+  echo "Removed $UNIT_DEST."
+else
+  echo "$UNIT_DEST not found; nothing to remove."
+fi