Replace async-std with smol

AGENTS.md

@@ -4,7 +4,7 @@ This file provides guidance to AI agents when working with code in this reposito
 
 ## Project Overview
 
-async-sqlite is a Rust library providing an asynchronous, runtime-agnostic wrapper around SQLite via `rusqlite`. It works with any async runtime (tokio, async-std, etc.) by using background threads internally rather than depending on a specific runtime.
+async-sqlite is a Rust library providing an asynchronous, runtime-agnostic wrapper around SQLite via `rusqlite`. It works with any async runtime (tokio, smol, etc.) by using background threads internally rather than depending on a specific runtime.
 
 ## Build Commands
 
@@ -40,4 +40,4 @@ All Cargo features are pass-through to `rusqlite`. The `bundled` feature (defaul
 
 ## Testing
 
-Tests in `tests/tests.rs` use a `async_test!` macro that generates two variants of each async test: one running on tokio and one on async-std. This ensures runtime compatibility. Tests use `tempfile` for temporary database files.
+Tests in `tests/tests.rs` use a `async_test!` macro that generates two variants of each async test: one running on tokio and one on smol. This ensures runtime compatibility. Tests use `tempfile` for temporary database files.

Cargo.toml

@@ -49,7 +49,7 @@ futures-util = { version = "0.3" }
 rusqlite = { version = "0.38.0" }
 
 [dev-dependencies]
-async-std = { version = "1.12.0" }
 paste = { version = "1.0.12" }
+smol = { version = "2" }
 tempfile = { version = "3.6.0" }
 tokio = { version = "1.29.1", features = ["rt"] }

README.md

@@ -6,7 +6,7 @@
 A library to interact with sqlite from an async context.
 
 This library is tested on both [tokio](https://docs.rs/tokio/latest/tokio/)
-and [async_std](https://docs.rs/async-std/latest/async_std/), however
+and [smol](https://docs.rs/smol/latest/smol/), however
 it should be compatible with all async runtimes.
 
 ## Install

src/lib.rs

@@ -3,7 +3,7 @@
 //! A library to interact with sqlite from an async context.
 //!
 //! This library is tested on both [tokio](https://docs.rs/tokio/latest/tokio/)
-//! and [async_std](https://docs.rs/async-std/latest/async_std/), however
+//! and [smol](https://docs.rs/smol/latest/smol/), however
 //! it should be compatible with all async runtimes.
 //!
 //! ## Usage

tests/tests.rs

@@ -64,8 +64,8 @@ macro_rules! async_test {
     ($name:ident) => {
         paste::item! {
             #[::core::prelude::v1::test]
-            fn [< $name _async_std >] () {
-                ::async_std::task::block_on($name());
+            fn [< $name _smol >] () {
+                ::smol::block_on($name());
             }
 
             #[::core::prelude::v1::test]