Dynamic Classroom: let the director append new course pages during conversation

[cosarah]

Today, course generation is one-shot. Once a course is created, users can continue the conversation in the classroom, but those follow-up explanations do not become part of the course itself.

This creates a gap: when a user wants to go deeper on a specific point, the system can answer in chat, but it cannot naturally extend the course with new pages based on the current context.

I want to discuss adding a dynamic classroom capability at runtime:

• Users still generate the initial course the same way as today.
• Dynamic mode is a course-level toggle that can be turned on or off, including after the course has already been generated.
• When enabled, the director can do one more thing in addition to orchestrating classroom agents: it can decide to append a small number of new outlines.
• New outlines are appended to the end of the course only, typically 1 to 3 pages.
• Page content, actions, TTS, and media generation continue to use the existing pipeline. This does not introduce a second page-generation flow.

For storage semantics, my current preference is:

• The toggle only controls whether future dynamic extension is allowed. It does not rewrite existing pages.
• Dynamically generated pages are written back into the current course and keep the same course ID.
• If we want to preserve the original version, that should be an explicit duplicate / fork action, not an automatic new course on every dynamic extension.

This would keep the scope focused around director decisions, outline extension, and wiring into the existing generation pipeline.

Questions:

• Should we build this feature at all?
• When should the director append new pages, and when should it just reply normally?
• How should we prevent new pages from overlapping too much with existing ones?
• Does the storage model above make sense?