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/user-requirement.md

@@ -0,0 +1,38 @@
+---
+id: UR-yyyymmdd-nnn
+case_id: REQ-yyyymmdd-nnn-short-name
+type: user-requirement
+stage: user-requirement
+owner_role: PM
+status: draft
+source_ids:
+  - INTAKE-yyyymmdd-nnn
+derived_ids: []
+skill:
+  name: pm-requirement-refine
+  version: 0.1.0
+created: yyyy-mm-dd
+updated: yyyy-mm-dd
+---
+
+# 用户需求
+
+## 一句话需求
+
+## 用户目标
+
+## 业务价值
+
+## 范围
+
+### 包含
+
+### 不包含
+
+## 验收方向
+
+## 优先级
+
+## 假设
+
+## 待确认问题