feat: Introduce smart-features Cargo feature to conditionally compile smart note functionalities and their dependencies.

notes-infra/src/lib.rs

@@ -15,6 +15,7 @@
 //! - [`db::run_migrations`] - Run database migrations
 
 pub mod db;
+#[cfg(feature = "smart-features")]
 pub mod embeddings;
 pub mod factory;
 #[cfg(feature = "sqlite")]
@@ -26,6 +27,7 @@ pub mod session_store;
 pub mod tag_repository;
 #[cfg(feature = "sqlite")]
 pub mod user_repository;
+#[cfg(feature = "smart-features")]
 pub mod vector;
 
 // Re-export for convenience