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.

docs/MidScene 配置.md

@@ -0,0 +1,20 @@
+多模型配置在文档里面没有明确model family key，下面是一个正确的配置：
+
+
+# 多模型配置 
+## 默认视觉模型：Qwen3-VL
+MIDSCENE_MODEL_BASE_URL="[https://coding.dashscope.aliyuncs.com/v1](https://coding.dashscope.aliyuncs.com/v1)" 
+MIDSCENE_MODEL_API_KEY="" MIDSCENE_MODEL_NAME="qwen3.5-plus" 
+MIDSCENE_MODEL_FAMILY="qwen3.5" MIDSCENE_MODEL_REASONING_ENABLED="false" 
+
+## Planning 模型：doubao-seed-2-0-pro-260215 
+MIDSCENE_PLANNING_MODEL_BASE_URL="[https://ark.cn-beijing.volces.com/api/coding/v3](https://ark.cn-beijing.volces.com/api/coding/v3) "
+MIDSCENE_PLANNING_MODEL_API_KEY=""
+MIDSCENE_PLANNING_MODEL_NAME="doubao-seed-2-0-pro-260215" 
+MIDSCENE_PLANNING_MODEL_FAMILY="doubao-seed" 
+
+## Insight 模型：doubao-seed-2-0-pro-260215 
+MIDSCENE_INSIGHT_MODEL_BASE_URL="[https://ark.cn-beijing.volces.com/api/coding/v3](https://ark.cn-beijing.volces.com/api/coding/v3)"
+MIDSCENE_INSIGHT_MODEL_API_KEY=""
+MIDSCENE_INSIGHT_MODEL_NAME="doubao-seed-2-0-pro-260215" 
+MIDSCENE_INSIGHT_MODEL_FAMILY="doubao-seed"