Function connect 

pub async fn connect(url: &str) -> Result<SqlitePool>

Connect to a SQLite database and return a connection pool.

The pool is configured with:

• create_if_missing(true) — the database file is created automatically
• WAL journal mode — better concurrent read performance
• Foreign keys enabled — referential integrity is enforced
• Up to 8 concurrent connections

Examples

let pool = atrg_db::connect("sqlite://atrg.db").await?;