We are launching an online platform that helps teachers streamline their planning and marking workflow with AI. We plan to build a suite of tools focussing on lesson-plan creation tools powered by large language models such as ChatGPT via their business APIs. Here’s what I need built in this phase: • A web interface where teachers enter class details (age, level, objectives) and instantly receive a full lesson outline for Teaching English as a Foreign Language. • Curriculum-alignment logic so every plan matches the selected syllabus or standards. • Flexible customisation options that let users tweak timing, activities, and required materials before exporting or saving. Backend tasks include connecting securely to the chosen LLM, orchestrating prompts, and storing user sessions. A modular architecture is important because we also need to build other tools: AI-generated resources, flash cards, reading-level checks, and automated marking. Please design for scale, document the API endpoints, and deliver clean, test-covered code plus a short video walkthrough.