Default signups off, improve Docker deploy, fix onboarding step UI.

Show a disabled-registration state on the register page when DISABLE_SIGNUPS is true (default), document docker-deploy.sh with git-SHA image tags, and align onboarding progress circles and labels on a shared grid.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/docker-deploy.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Production deploy helper for docker-compose.yml (not docker-compose.dev.yml).
+# Rebuilds the app image from the current working tree, then starts/restarts services.
+#
+# Plain `docker compose up -d` reuses the local image tag and does NOT pick up
+# changes from `git pull`. Always pass --build or use this script after pulling.
+
+cd "$(dirname "$0")/.."
+
+if [[ -f .env ]]; then
+  set -a
+  # shellcheck disable=SC1091
+  source .env
+  set +a
+fi
+
+if [[ -z "${BEENVOICE_IMAGE:-}" ]] && command -v git >/dev/null 2>&1; then
+  if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+    BEENVOICE_IMAGE="beenvoice:$(git rev-parse --short HEAD)"
+    export BEENVOICE_IMAGE
+  fi
+fi
+
+BEENVOICE_IMAGE="${BEENVOICE_IMAGE:-beenvoice:local}"
+export BEENVOICE_IMAGE
+
+echo "Deploying ${BEENVOICE_IMAGE} (docker compose up -d --build)..."
+exec docker compose up -d --build "$@"