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/60-evaluations/prompt-runs/index.md

@@ -0,0 +1,19 @@
+---
+id: PROMPT-RUNS-INDEX
+type: evaluation-index
+status: draft
+created: 2026-06-29
+---
+
+# Prompt Runs
+
+记录重要 prompt 运行过程、输入、输出、问题和结论。
+
+建议字段：
+
+- 日期。
+- 使用的 skill。
+- 输入 artifact。
+- 输出 artifact。
+- 失败点。
+- 后续改进。

AI-RD-Workflow/60-evaluations/retrospectives/index.md

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+---
+id: RETROSPECTIVES-INDEX
+type: evaluation-index
+status: draft
+created: 2026-06-29
+---
+
+# 复盘
+
+记录真实使用后的经验。
+
+每次复盘关注：
+
+- 哪个阶段卡住。
+- 哪个模板字段不够。
+- 哪个 skill 指令不清晰。
+- 哪个追踪关系缺失。
+- 是否需要更新标准、模板或 skill。

AI-RD-Workflow/60-evaluations/skill-eval-cases/index.md

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+---
+id: SKILL-EVAL-CASES-INDEX
+type: evaluation-index
+status: draft
+created: 2026-06-29
+---
+
+# Skill 评测用例
+
+用于保存可重复执行的 skill 评测样本。
+
+建议结构：
+
+```text
+skill-eval-cases/
+├── pm-requirement-review/
+├── pm-requirement-refine/
+├── se-requirement-review/
+├── se-requirement-analysis/
+├── rd-design-generate/
+└── test-case-generate/
+```