Echo should be able to add recommended drills directly to my daily practice queue

Summary:

Echo currently suggests drills based on my weak areas, which feels personalized and helpful. But I have to manually find and open each one separately.

The idea is to let Echo push its recommendations into my daily rotation automatically. So when it suggests a drill or a weekly mix, it builds my schedule rather than just advising on it. This would close the loop between coaching and actual practice in one seamless step.

Right now the coaching and the practice queue feel like two separate things. This would connect them.