app: add storage commands/queries + missing in-memory test repos

crates/application/src/storage/mod.rs

@@ -1 +1,7 @@
-// Storage commands/queries (future: IngestAsset, ManageVolume, etc.)
+pub mod commands;
+pub mod queries;
+
+pub use commands::register_volume::{RegisterVolumeCommand, RegisterVolumeHandler};
+pub use commands::register_library_path::{RegisterLibraryPathCommand, RegisterLibraryPathHandler};
+pub use commands::ingest_asset::{IngestAssetCommand, IngestAssetHandler};
+pub use queries::check_quota::{CheckQuotaQuery, CheckQuotaHandler};