Language: Rust + SpacetimeDB

Create this app using SpacetimeDB as the backend with Rust for both server module and client.

Project Setup

apps/chat-app/staging/rust/<LLM_MODEL>/spacetime/chat-app-YYYYMMDD-HHMMSS/

Module name: chat-app

Architecture

Backend: SpacetimeDB Rust module (spacetimedb crate) Client: Rust CLI application using spacetimedb-sdk

The client should:

• Connect to SpacetimeDB using spacetimedb-sdk
• Provide a terminal-based interface (TUI with ratatui/crossterm, or simple stdin/stdout)
• Display real-time updates in the terminal
• Show clear command structure and help

Constraints

• Only create/modify code under:
  • .../backend/ (Rust SpacetimeDB module)
  • .../client/ (Rust CLI application)
• Keep it minimal and readable.

Output

Return only code blocks with file headers for the files you create.