jen

refactor: streamline imports and remove unused components; add ChatListView and RoomDetailStore for improved chat functionality

refactor: update agent retrieval to return structured response; clean up unused code and improve component structure

refactor: rename account-related components and update references to chat participants

Refactor agent and tool management components

Refactor agent, LLM, and tool stores to use DTOs; update API routes for agents and LLMs to return DTOs; remove unused types and improve code structure.