feat: add frontend development guidelines and structure documentation

- Introduced API guidelines for interface contracts and request handling.
- Added design tokens usage guidelines for consistent styling across the project.
- Established DTO guidelines for defining request parameters and response data types.
- Created frontend structure guidelines to clarify directory organization and code placement rules.
- Compiled a comprehensive frontend development guideline document covering various aspects of the development process.
- Implemented quality guidelines to ensure code maintainability and adherence to best practices.

AI-RD-Workflow/30-templates/ds.md

@@ -0,0 +1,45 @@
+---
+id: DS-yyyymmdd-nnn
+case_id: REQ-yyyymmdd-nnn-short-name
+type: design-specification
+stage: detailed-design
+owner_role: RD
+status: draft
+source_ids:
+  - OR-yyyymmdd-nnn
+  - DR-yyyymmdd-nnn
+derived_ids: []
+skill:
+  name: rd-design-generate
+  version: 0.1.0
+created: yyyy-mm-dd
+updated: yyyy-mm-dd
+---
+
+# DS：详细设计
+
+## 背景
+
+## 影响范围
+
+## 模块拆分
+
+## 接口设计
+
+## 数据设计
+
+## 状态流
+
+## 异常处理
+
+## 权限与安全
+
+## 兼容性与迁移
+
+## 观测与日志
+
+## 开发任务拆分
+
+## 测试点
+
+## 风险与待确认