Fix: Ensure Pydantic model serialization for API responses

feat: Enhance API with rate limiting, metrics, and dynamic cookie reload

将所有API Key相关表述和变量名称调整为认证令牌

feat: Add FastAPI HTTPException and JSONResponse imports

Feat: Display Gemini images and add metrics endpoint

feat: Enhance Gemini multimodal response display and optimize API calls

feat: Add image upload support for Gemini chat

Enhance logging and memory metrics; fix UI link

Simplify memory metrics output and update Hugging Face badge

feat: Improve metrics and display call records

Update memory metric and refine UI layout

feat: Implement memory usage tracking and optimize Docker build

Refactor: Improve UI layout and prepare metrics for extensibility

Initial project setup