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/scenario-analysis.md

@@ -0,0 +1,33 @@
+---
+id: SA-yyyymmdd-nnn
+case_id: REQ-yyyymmdd-nnn-short-name
+type: scenario-analysis
+stage: user-requirement
+owner_role: PM
+status: draft
+source_ids:
+  - UR-yyyymmdd-nnn
+  - RA-yyyymmdd-nnn
+derived_ids: []
+skill:
+  name: pm-requirement-refine
+  version: 0.1.0
+created: yyyy-mm-dd
+updated: yyyy-mm-dd
+---
+
+# 场景分析
+
+## 主场景
+
+## 替代场景
+
+## 异常场景
+
+## 边界场景
+
+## 角色与权限
+
+## 数据变化
+
+## 验收标准映射