- Remove blank line insertion after each parent task group
- Add support for orphaned subtasks (subtasks whose parent is not in the current task list)
- Add comprehensive tests for markdown formatting without extra blank lines
- Update package.json with latest dependencies
- Configure build script for plugin packaging
- Archive old implementation in src/background/old/
- Remove obsolete test files and utilities
- Clean up unused replication approach
- Add @super-productivity/plugin-api package with TypeScript definitions
- Define core plugin interfaces, types, and manifest structure
- Add plugin hooks system for event-driven architecture
- Create plugin API type definitions and constants
- Add documentation and development guidelines
