feat: restructure gen2D deck with enriched content and frankfurt theme components

- Restructure from 12 slides to 21 slides with proper section navigation
- Split into pages/ for modular maintenance (15 page files)
- Use frankfurt theme: cover layout, Item component, section frontmatter
- Remove all two-cols layouts to avoid rendering issues
- Add rich content from tmp/ docs: Eino pipeline, prompt agent, async tasks, data model, deployment
- Use Item component for structured content blocks
- Add mermaid ER diagram for data model
- Add Go code block for pipeline type definitions

decks/gen2D/pages/deployment.md

@@ -0,0 +1,40 @@
+# 部署架构
+
+Docker Compose 双容器 + 一键部署
+
+```mermaid {scale: 0.8}
+graph TB
+    subgraph Docker Compose
+        A[nginx 容器<br/>前端静态文件 + 反向代理]
+        B[app 容器<br/>Go 后端 + SQLite]
+    end
+    A -->|proxy_pass| B
+    B --> C[七牛云 Kodo<br/>素材文件存储]
+    B --> D[DeepSeek LLM<br/>提示词优化]
+    B --> E[Stability AI<br/>文生图 API]
+    User -->|HTTP| A
+```
+
+<Item title="🐳 容器化方案">
+
+- **nginx 容器**：Vite 构建产物 + 反向代理 `/api` 到后端
+- **app 容器**：Go 二进制 + SQLite 数据库文件挂载
+- **网络**：Docker 内部网络通信，nginx 暴露 8080 端口
+
+</Item>
+
+<Item title="🚀 一键部署">
+
+```bash
+# 构建并启动
+docker compose up -d --build
+
+# 或使用部署脚本
+./deploy.sh
+```
+
+- Gitee CI/CD 自动触发：push → 构建 → 部署
+- SQLite 嵌入式数据库，无需额外数据库服务
+- 配置通过环境变量 / `.env` 文件注入
+
+</Item>