chore: Add worktree deployment support (#2491)

scripts/deployment-update-symlink.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+#
+# `yarn deployment-update` — point the manual-test Home Assistant instance at
+# this worktree.
+#
+# Repoints the `$ACC_LIVE_LINK` symlink (the dev static server's document root)
+# at this worktree's `dist/`. HA loads the card from a fixed URL served off that
+# static server, so switching worktrees is just this one symlink hop.
+set -euo pipefail
+
+if [[ -z "${ACC_LIVE_LINK:-}" ]]; then
+  echo "ACC_LIVE_LINK is not set — point it at the symlink to update." >&2
+  exit 1
+fi
+
+TARGET="$PWD/dist"
+mkdir -p "$(dirname "$ACC_LIVE_LINK")"
+ln -sfn "$TARGET" "$ACC_LIVE_LINK"
+
+echo "Advanced Camera Card → $TARGET"
+[[ -d "$TARGET" ]] || echo "(no dist/ here yet — run \`yarn start\` to build it)"