Language: C# + SpacetimeDB

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

Project Setup

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

Module name: chat-app

Architecture

Backend: SpacetimeDB C# module (SpacetimeDB.Runtime) Client: .NET MAUI application (SpacetimeDB.ClientSDK)

Constraints

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

Output

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