refactor: Modularize UI components and utilities

- Extract UI components into separate JS files
- Centralize configuration values in config.js
- Introduce a dedicated logger module
- Improve file tree drag-and-drop and undo functionality
- Refactor modal handling to a single manager
- Add URL routing support for SPA navigation
- Implement view mode for read-only access

collections/notes/tests/test.md

@@ -0,0 +1,9 @@
+
+# test
+
+- 1
+- 2
+
+
+
+!!include path:test2.md