agentforge-core

Create a fully functional mini-application that leverages the 'agentforge-core' package to manage and execute simple tasks through an agentic framework. Your app will act as a personal task manager that can receive user commands to create, update, delete, and retrieve tasks. Additionally, it should support scheduling tasks based on specific times or dates. Here’s a detailed breakdown of the requirements:

1. **Task Management**: Implement functionalities to add new tasks, mark tasks as completed, update existing tasks, and delete tasks.
2. **Scheduling Tasks**: Allow users to schedule tasks for specific dates and times. Ensure that these scheduled tasks are stored and can be retrieved based on their scheduled date and time.
3. **Agentic Framework Integration**: Utilize the 'agentforge-core' package to define the core structures and behaviors required for task management. This includes using the provided ABCs (Abstract Base Classes) and value types from 'agentforge-core' to ensure consistency and stability in your application.
4. **User Interface**: Develop a simple command-line interface (CLI) where users can interact with the task manager. The CLI should provide clear prompts and feedback to the user.
5. **Persistence**: Implement a mechanism to persist tasks and their schedules across sessions. Use a local file or database to store task data.
6. **Notifications**: Add a feature that notifies users when a scheduled task is about to occur or has occurred. Notifications can be simple print statements or more sophisticated depending on your implementation.
7. **Testing**: Write unit tests to ensure all functionalities work as expected.

Your goal is to demonstrate how 'agentforge-core' can be effectively integrated into a real-world application to enhance its capabilities and maintainability. Focus on clarity, efficiency, and adherence to best practices.