Changelog

🤖 Generated with Claude Code

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Configurable OpenAI API mode: OpenAI providers can now opt into either openai-completions or openai-responses via provider config, with openai-completions remaining the default.

Unified OpenAI transport selection: Main chat, search intent analysis, and DeepResearch now respect the same OpenAI API mode setting instead of mixing chat.completions and LangChain defaults.
Responses API support: The server OpenAI client now supports full-history replay through the Responses API for both streaming and non-streaming chat flows.
Responses API error handling: Failed and incomplete Responses API results now surface as errors instead of empty assistant messages, and reasoning text is preserved for non-streaming responses.
Structured tool progress completion: Search intent analysis, query rewriting, deep research query generation, and reflection now emit explicit completion/interruption updates so internal tool steps no longer remain stuck in loading state on the chat UI.
Backend regression coverage: Added server-side tests for OpenAI client mode selection and Responses API request/stream handling.

🔄 Server-Side Logic Rewrite: Complete overhaul of backend architecture
- Refactored core modules with improved API design
- Enhanced error handling and request processing mechanisms
- Updated prompt templates and LLM integration patterns
- Improved chat request abortion and user message handling
🎨 Frontend UI Rewrite: Comprehensive frontend redesign and optimization
- Restructured chat components for better maintainability and performance
- Enhanced ChatAnswer component with improved rendering efficiency
- Redesigned code block rendering with better styling and structure
- Improved theme consistency and dark mode support

Anthropic LLM Support: Added support for Anthropic Claude models integration
Chat History Sidebar: Implemented persistent chat history with localStorage support
LangGraph Streaming: Added streaming support for LangGraph content responses
Collapsed Sidebar Mode: Added collapsible sidebar functionality for better UX

Web Frontend:
- Fixed dark mode display issues and improved theme consistency
- Optimized citation rendering and display
- Improved link visibility in various themes
- Fixed user message handling and display
Server Backend:
- Enhanced error handling mechanisms
- Fixed user message processing
- Improved chat request abortion handling

Component Architecture: Restructured chat components for better maintainability
Internationalization: Updated English translations (i18n/en.ts)