- Added comprehensive documentation for the new RESTful HTTP APIs for managing chat sessions and messages, including endpoints for listing, retrieving, updating, and deleting chat sessions.
- Included detailed request and response examples for each endpoint, along with query parameters and permission filtering guidelines.
- Updated the `CHAT_STORAGE_DESIGN.md` to reflect these changes, ensuring clarity on the API's functionality and usage.
- Introduced a new POST endpoint `/completions/:context_id/append` to allow appending messages to ongoing chat completions.
- Implemented `GinAppendMessages` function to handle request validation, including context ID and message requirements.
- Added `AppendMessagesRequest` struct to define the request body format, ensuring proper handling of interrupt types and messages.
- Enhanced error responses for invalid requests to improve user feedback and debugging capabilities.
- Updated context creation in handleChat, handleGenerateTitle, and handleGeneratePrompts to use the request context, improving context management.
- Commented out unused context settings for assistant ID, silent mode, history visibility, and client type to streamline the code.
- Refactored context handling in assistant methods to enhance clarity and maintainability.
- Removed deprecated functions and cleaned up the context structure for better performance and readability.
