Implement and verify control streams and commands

[tipatterson-dev]

To support full system functionality, control streams and command channels must be implemented and verified.

Tasks:

• Identify required control streams and command patterns.
• Implement missing control stream and command logic.
• Write and run tests to verify correct operation and error handling.
• Document control and command usage with examples.

Acceptance Criteria:

• All required control streams and command channels are implemented and fully tested.
• Documentation clearly explains usage and error handling.