* feat: add inline message editing and regeneration functionality for webui
- Implemented inline editing for user messages in the chat component.
- Added a regenerate menu for retrying messages with different models.
- Enhanced message handling to include llm_checkpoint_id for better tracking.
- Updated localization files to include new actions for retrying and model selection.
- Introduced tests for checkpoint message handling and chat route functionality.
* feat: thread mode in webui
* feat: enhance message editing functionality to allow only the latest user message to be edited
* feat: add error handling and user feedback for thread creation in chat component
* feat: add thread count display and localization support in chat component
* feat: add RefsSidebar component and integrate reference management in chat UI
* feat: improve message editing validation and cleanup for bot messages
* feat: enhance checkpoint message handling with binding and dumping functionality
Resolved merge conflicts in:
- func_tool_manager.py: kept origin version (full implementation)
- astr_main_agent*.py: kept HEAD version (complete refactor)
- cron_tools.py: kept HEAD version (with get_all_tools)
- config/default.py: kept HEAD version (DEFAULT_WEB_SEARCH_PROVIDER)
- dashboard/*.vue: kept HEAD version
- web_searcher engines: kept HEAD version
- Added new tools: knowledge_base_tools, message_tools, registry, web_search_tools
