Remove Agent Desk users, roles, login sessions, tokens, and local permission persistence. Expose the backend as an embeddable ai-agent module with host-provided subject lookup and operation authorization callbacks, and complete the frontend/backend repository split.
- Updated multiple repository and service files to replace imports from "github.com/mlogclub/simple/web/params" with "cs-agent/internal/pkg/httpx/params".
- Adjusted context handling in auth_service and ws_service to use gin.Context instead of iris.Context.
- Ensured consistent usage of HTTP status responses across websocket handlers.