undefined

```dart
import 'package:duskmoon_ui/duskmoon_ui.dart';

dependencies:
  duskmoon_theme: ^1.4.0           # Theme only
  duskmoon_widgets: ^1.4.0         # Adaptive widgets
  duskmoon_settings: ^1.4.0        # Settings UI
  duskmoon_feedback: ^1.4.0        # Dialogs, toasts, snackbars
  duskmoon_form: ^1.4.0            # BLoC-based form management
  duskmoon_visualization: ^1.4.0   # Data visualization charts
  duskmoon_theme_bloc: ^1.4.0      # BLoC persistence
  duskmoon_adaptive_scaffold: ^1.4.0  # Responsive scaffold
  duskmoon_code_engine: ^1.4.0     # Code editor engine

import 'package:flutter/material.dart';
import 'package:duskmoon_ui/duskmoon_ui.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: DmThemeData.sunshine(),
      darkTheme: DmThemeData.moonlight(),
      themeMode: ThemeMode.system,
      home: const HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: DmAppBar(title: const Text('DuskMoon App')),
      body: Center(
        child: DmButton(
          onPressed: () => showDmSuccessToast(
            context: context,
            message: 'Hello from DuskMoon!',
          ),
          child: const Text('Tap me'),
        ),
      ),
    );
  }
}

duskmoon_theme              <- Pure theme, zero external deps
    +-- duskmoon_theme_bloc <- BLoC for theme persistence
    +-- duskmoon_widgets    <- 19 adaptive widgets + markdown + code editor
    |       +-- duskmoon_code_engine (for DmCodeEditor)
    +-- duskmoon_settings   <- Settings UI (Material/Cupertino/Fluent)
    +-- duskmoon_feedback   <- Dialogs, snackbars, toasts, bottom sheets
    +-- duskmoon_form       <- BLoC-based form management (depends on theme + widgets)
    +-- duskmoon_visualization <- Data visualization charts (depends on theme)
    +-- duskmoon_code_engine <- Pure Dart code editor (re-exported by umbrella)
            |
        duskmoon_ui         <- Umbrella: re-exports all packages
                               Provides DmEditorTheme (fromTheme, sunshine, moonlight)

duskmoon_code_engine        <- Pure Dart code editor (standalone)
duskmoon_adaptive_scaffold  <- Responsive scaffold (forked, independently versioned)