- Sidebar: restore DropdownMenu for session actions, fix long titles
pushing button off-screen (add w-0 flex-1, w-full on content div)
- Model selector: remove SiliconFlow models, DeepSeek only
(deepseek-reasoner default, deepseek-chat alternative)
- Message timestamp: change from HH:mm to yyyy/M/d HH:mm format
- Default model changed to deepseek-reasoner
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add DeepSeek provider routing: deepseek-chat/deepseek-reasoner use
api.deepseek.com, other models use SiliconFlow
- Add stream_with_reasoning() using raw OpenAI SDK to capture
reasoning_content (langchain_openai strips this field)
- RAG chain and conversation chain both use stream_with_reasoning
for proper reasoning display in thinking models
- Frontend model selector: grouped by provider (DeepSeek official +
SiliconFlow), default changed to deepseek-chat
- Regenerate message converted to streaming with reasoning capture
- Minor UI: globals.css additions, chat store refactoring
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>