Generate Prompts From Steps

Phase 3b: Generate full lesson prompts from validated steps.

Takes the steps from Phase 3a (possibly modified by teacher) and generates complete system prompts for both lessons.

Example request:

{
    "query": "I want to teach x+x+x = 3x",
    "conceptual_steps": {
        "lesson_type": "conceptual",
        "title": "Understanding Like Terms",
        "steps": ["Like terms = same variable", "Combining = counting"]
    },
    "procedural_steps": {
        "lesson_type": "procedural",
        "title": "Combining Like Terms",
        "steps": ["Identify like terms", "Add coefficients"]
    }
}