refactor applications to delegate responsibilites

dreader/managers/__init__.py

@@ -0,0 +1,14 @@
+"""
+Managers module for dreader application.
+
+This module contains business logic managers that handle specific responsibilities:
+- DocumentManager: Document loading and metadata
+- SettingsManager: Font size, spacing, and rendering settings
+- HighlightCoordinator: Highlight operations coordination
+"""
+
+from .document import DocumentManager
+from .settings import SettingsManager
+from .highlight_coordinator import HighlightCoordinator
+
+__all__ = ['DocumentManager', 'SettingsManager', 'HighlightCoordinator']