Scaffold Symfony 8 app with Bootstrap/DataTables and Docker stack

- Symfony 8.1 webapp skeleton on PHP 8.5 (AssetMapper/importmap, no Node)
- Form-login gate: User entity, security.yaml, SecurityController,
  app:user:create command, initial migration (user + messenger_messages)
- Bootstrap 5 + DataTables layout (base/login/home templates); any
  table.datatable is auto-initialised
- trusted_proxies/headers wired for the shared Nginx Proxy Manager
- Docker (servers only): docker-compose.yml (php:8.5-fpm-alpine,
  nginx:1.30-alpine, mariadb:12.3; host ports 8085/3310; external
  docker_default network) + docker/{Dockerfile,php.ini,nginx,setup.sh,restart.sh}
- .env with CHANGEME placeholders (no secrets), .gitattributes enforces
  LF so the deploy scripts stay runnable on Linux

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docker/restart.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Fully restart the dmtools stack for this checkout (testing or live). Scoped to
+# the compose project name, so running it from the test checkout never touches
+# the prod stack.
+#
+#   ./docker/restart.sh              # down + rebuildless bring-up via setup.sh
+#   ./docker/restart.sh --prune-all  # also run host-wide docker prune
+
+DOCKER_DIR=$(cd "$(dirname "$0")" && pwd)
+ROOT_DIR=$(cd "$DOCKER_DIR/.." && pwd)
+PROJECT=dmtools
+
+PRUNE_ALL=0
+for arg in "$@"; do
+  case "$arg" in
+    --prune-all) PRUNE_ALL=1 ;;
+    *) echo "Unknown option: $arg" >&2; exit 1 ;;
+  esac
+done
+
+echo "Restarting stack: $PROJECT"
+(cd "$ROOT_DIR" && docker compose -p "$PROJECT" -f docker-compose.yml down --remove-orphans) || true
+
+docker rm -f dmtools-php dmtools-nginx dmtools-db 2>/dev/null || true
+for net in $(docker network ls -q --filter "name=^${PROJECT}_" 2>/dev/null); do
+  docker network rm "$net" || true
+done
+
+if [ "$PRUNE_ALL" -eq 1 ]; then
+  echo "Host-wide prune..."
+  docker system prune -f || true
+  docker builder prune -af || true
+else
+  echo "Skipping host-wide prune (pass --prune-all to force it)."
+fi
+
+echo "Running setup script..."
+"$DOCKER_DIR/setup.sh" --no-build