* feat: Implement AI Agent with tool processing capabilities
- Added tools for listing and running processors in the agent.
- Created data models for agent chat requests and tool calls.
- Developed API integration for agent chat and streaming responses.
- Built the AI Agent widget with a user interface for interaction.
- Styled the agent components for better user experience.
* feat: 增强 AI 助手工具功能，添加文件操作和搜索功能，更新界面显示
* feat: 更新 AI 助手组件
* feat: 更新 AiAgentWidget 组件样式，调整背景和边距以提升界面一致性
