The format switcher now behaves like part of the learning workspace, not like a loose control inside the lesson body.
- Lesson formats now render in a scaffold-level second header directly under the main Learn header, matching the connected header pattern used in the admin console.
- The selected format controls the rendered content panel while preserving the path's planned lesson as the completion gate.
- Format selection resets when the learner moves to a different step, so a flashcard or quiz choice does not bleed into the next skill.
- Keyboard-accessible tabs cover the full study set: Lesson (planned), Flashcards, Quiz, Walkthrough, Diagram, and Exercise.