🌟 优化 README Star History 展示和 Docker 工作流配置

- 在 README 中使用响应式 Star History 图表，支持浅色和深色主题
- 更新 Docker 工作流配置，忽略 Markdown 和文档目录的变更触发

.github/workflows/docker.yml

@@ -3,8 +3,14 @@ name: Docker Build and Push
 on:
   push:
     branches: [ main, master ]
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
   pull_request:
     branches: [ main, master ]
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
 
 env:
   REGISTRY: docker.io

README.md

@@ -119,8 +119,15 @@ pnpm dev:fresh        # 完整重置并重新启动开发环境
 - [项目状态](docs/project-status.md) - 当前进度和计划
 - [产品需求](docs/prd.md) - 产品需求文档
 
-## Star趋势图
-[![Star History Chart](https://api.star-history.com/svg?repos=linshenkx/prompt-optimizer&type=Date)](https://star-history.com/#linshenkx/prompt-optimizer&Date)
+## Star History
+
+<a href="https://star-history.com/#linshenkx/prompt-optimizer&Date">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=linshenkx/prompt-optimizer&type=Date&theme=dark" />
+   <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=linshenkx/prompt-optimizer&type=Date" />
+   <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=linshenkx/prompt-optimizer&type=Date" />
+ </picture>
+</a>
 
 ## 🤝 参与贡献