Feature: textbook-generation

Objective: Define a complete, unambiguous specification for building the AI-native textbook with RAG chatbot.

Book Structure:

1. Introduction to Physical AI
2. Basics of Humanoid Robotics
3. ROS 2 Fundamentals
4. Digital Twin Simulation (Gazebo + Isaac)
5. Vision-Language-Action Systems
6. Capstone

Technical Requirements:

• Docusaurus
• Auto sidebar
• RAG backend (Qdrant + Neon)
• Free-tier embeddings

Optional:

• Urdu translation
• Personalize chapter

Output: Full specification.