Add logging for in-memory database initialization

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: kariy

crates/node/src/lib.rs

@@ -383,6 +383,7 @@ impl Node<DbProviderFactory> {
             let factory = DbProviderFactory::new(db.clone());
             (factory, db)
         } else {
+            info!(target: "node", "Initializing in-memory database.");
             let factory = DbProviderFactory::new_in_memory();
             let db = factory.db().clone();
             (factory, db)