test: refusing fakes, failure-path tests, shared panic stubs

crates/adapters/sqlite/tests/cascade_test.rs

@@ -27,8 +27,8 @@ use sqlx::sqlite::{SqliteConnectOptions, SqlitePoolOptions};
 
 const REMOTE_ACTOR: &str = "https://remote.example/users/ann";
 
-/// Same connect options `sqlite::wire` builds from a `sqlite:` URL (sqlx turns
-/// `foreign_keys` on by default), against a private in-memory database.
+/// Private in-memory database with plain `SqliteConnectOptions`; relies on
+/// sqlx's default `foreign_keys = ON`, which production also depends on.
 async fn migrated_pool() -> SqlitePool {
     let opts = SqliteConnectOptions::from_str("sqlite::memory:").unwrap();
     let pool = SqlitePoolOptions::new()