Alexander
c1205e5fb0
Split the monolithic app.rs (762 lines) into four DDD layers: - domain/: models, navigation enums (Tab, ModalKind), conversions, aggregates - application/: App state, LibraryState, NotificationManager, event handlers - infrastructure/: config, gRPC client, system utilities - presentation/: all render functions, widgets, views, modals Original modules (app, data, ui, config, grpc) preserved as thin re-export facades for backward compatibility. All 13 insta snapshot tests pass without modification.