build(docker): build frontend and server inside container; remove host build deps

scripts/prod-up.sh

@@ -3,15 +3,12 @@ set -euo pipefail
 
 echo "[Dream-Machine] 生产环境启动"
 echo "- 目标平台: linux/amd64"
-echo "- 将使用宿主机构建的前端 (dist/)"
+echo "- 在容器内编译前端与后端"
 
 SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
 ROOT_DIR=$(cd "$SCRIPT_DIR/.." && pwd)
 
-if [ ! -d "$ROOT_DIR/dist" ]; then
-  echo "[错误] 未检测到 dist/。请先在宿主机运行: pnpm run build"
-  exit 1
-fi
+# 不再依赖宿主机预构建，改为 Dockerfile 内构建
 
 echo "[步骤] 启动 Docker Compose (生产)"
 (cd "$ROOT_DIR/docker" && docker compose -f docker-compose.prod.yml up -d --build)