Initial TrueGrowth source import
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specs/003-chat-drawer/plan.md
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# Implementation Plan: 对话抽屉 (Chat Drawer)
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**Branch**: `001-chat-drawer` | **Date**: 2025-12-03 | **Spec**: [spec.md](./spec.md)
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**Input**: Feature specification from `/specs/001-chat-drawer/spec.md`
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## Summary
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实现一个可展开/收起的对话抽屉组件,位于画板右侧,支持:
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- 与AI进行流式连续对话
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- 对话历史持久化存储(IndexedDB via localforage)
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- 多会话管理(创建、切换、删除)
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- 附件上传(图片、文档、文件)
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- 响应式布局(桌面端自适应宽度,移动端全屏覆盖)
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技术方案基于现有的 Drawnix 架构,复用 Dialog、Task Queue、Settings 等组件模式。
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## Technical Context
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**Language/Version**: TypeScript 5.x, React 18.x
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**Primary Dependencies**: TDesign React (UI), Floating UI (定位), localforage (存储), RxJS (状态管理)
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**Storage**: IndexedDB via localforage (chat-sessions, chat-messages stores)
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**Testing**: Vitest + React Testing Library
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**Target Platform**: Web (Chrome, Firefox, Safari, Edge), 响应式支持移动端
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**Project Type**: Web Monorepo (Nx)
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**Performance Goals**: 抽屉动画60fps, 首字节响应<3秒, 历史恢复<500ms
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**Constraints**: 单文件<500行, TDesign light主题, BEM命名
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**Scale/Scope**: 50+会话, 每会话100+消息, 附件支持
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## Constitution Check
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*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*
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| Principle | Status | Notes |
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|-----------|--------|-------|
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| I. 插件优先架构 | ✅ Pass | Chat功能作为独立组件实现,不需要扩展Plait核心 |
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| II. 文件大小约束 (<500行) | ✅ Pass | 将拆分为多个小组件:ChatDrawer, MessageList, MessageInput, SessionList等 |
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| III. 类型安全优先 | ✅ Pass | 定义完整的TypeScript接口 |
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| IV. 设计系统一致性 | ✅ Pass | 使用TDesign组件,light主题,BEM命名 |
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| V. 性能与优化 | ✅ Pass | 使用React.memo, useCallback, 虚拟滚动 |
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| VI. 安全与验证 | ✅ Pass | 验证用户输入,不存储敏感信息明文 |
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| VII. Monorepo 结构 | ✅ Pass | 组件放置在 packages/drawnix/src/components/chat-drawer/ |
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## Project Structure
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### Documentation (this feature)
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```text
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specs/001-chat-drawer/
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├── plan.md # This file
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├── research.md # Phase 0 output
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├── data-model.md # Phase 1 output
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├── quickstart.md # Phase 1 output
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├── contracts/ # Phase 1 output
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│ └── chat-api.ts # TypeScript interfaces
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└── tasks.md # Phase 2 output
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```
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### Source Code (repository root)
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```text
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packages/drawnix/src/
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├── components/
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│ └── chat-drawer/ # 新增:对话抽屉组件
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│ ├── ChatDrawer.tsx # 主抽屉组件
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│ ├── ChatDrawerTrigger.tsx # 触发按钮
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│ ├── MessageList.tsx # 消息列表
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│ ├── MessageItem.tsx # 单条消息
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│ ├── MessageInput.tsx # 输入框组件
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│ ├── SessionList.tsx # 会话列表
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│ ├── SessionItem.tsx # 单个会话
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│ ├── AttachmentPreview.tsx # 附件预览
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│ ├── StreamingText.tsx # 流式文本显示
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│ └── chat-drawer.scss # 样式文件
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├── hooks/
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│ ├── useChatSessions.ts # 会话管理hook
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│ ├── useChatMessages.ts # 消息管理hook
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│ ├── useChatStream.ts # 流式响应hook
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│ └── useChatStorage.ts # 存储hook
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├── services/
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│ └── chat-service.ts # 聊天服务(API调用)
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├── types/
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│ └── chat.types.ts # 聊天类型定义
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└── constants/
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└── CHAT_CONSTANTS.ts # 聊天相关常量
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```
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**Structure Decision**: 遵循现有的组件组织模式,参考 task-queue/ 和 ttd-dialog/ 的结构。新增 chat-drawer/ 目录存放所有聊天相关组件。
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## Complexity Tracking
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> 无违规需要记录
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| Violation | Why Needed | Simpler Alternative Rejected Because |
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|-----------|------------|-------------------------------------|
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| - | - | - |
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