Rust Windsurf Rules

- Use axum for web services; it's the most ergonomic Tokio-native framework
- Use sqlx for async database access with compile-time query checking
- Target WASM with wasm-pack for browser-compatible Rust
- Use tracing and tracing-subscriber for structured async-aware logging
- Apply tower middleware for cross-cutting concerns (auth, rate limiting)
- Use cargo workspaces to organize related crates in a monorepo
- Enable cargo-deny to audit licenses and vulnerabilities in dependencies
- Write documentation with doc-tests; they're tested automatically