Cut product flows over to Coding/Pi and retain only the migration-owned v1 boundary. Promote supported native optional packages because electron-builder omitted pnpm transitive optional closure from the packaged ASAR.
需求：以设计项目组织固定设计 Agent 对话、方向确认和图片视频任务。 实现：新增 Works Square 云端适配与开发态本地适配，统一 Host API、Quote 确认、任务轮询及私有媒体 Range 代理。
