Language: Rust + SpacetimeDB

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

Project Setup

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

Module name: paint-app

Architecture

Backend: SpacetimeDB Rust module (spacetimedb crate) Client: Rust axum server with embedded HTML/CSS/JS GUI that opens in browser

The client should:

• Connect to SpacetimeDB using spacetimedb-sdk
• Serve a web GUI via axum on localhost
• Auto-open the browser with the open crate
• Use polling or WebSocket for real-time updates from the local axum server

Constraints

• Only create/modify code under:
  • .../backend/ (Rust SpacetimeDB module)
  • .../client/ (Rust client with web-based GUI)
• Keep it minimal and readable.

Output

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