I need a straightforward, proof-of-concept tool that can fire off up to 100 WhatsApp messages at once—or in small, consecutive batches—while staying inside WhatsApp’s official guidelines. My priority is reliability over fancy UI. • Core stack: Python for all messaging logic. • Platforms: the solution must work with both iOS and Android handsets or emulators. • Contacts: store and manage numbers in a lightweight database (your choice of SQLite, Postgres, etc.), with basic CRUD endpoints or a simple admin screen to add, update, and flag contacts. • Compliance: where possible, lean on the WhatsApp Business API, Twilio, or any other authorised gateway so messages are delivered without risking account bans. • Messages: support plain text for now; I’ll provide the sample copy. • Deliverables: – Fully commented Python code and requirements.txt – Quick start guide (setup, database schema, how to trigger a batch send) – A short tech-note explaining rate limits and any additional steps needed for production hardening I’m keeping scope tight: an initial working script plus a concise blueprint that shows how you’d scale or add rich-media later. Please outline your technical approach, the libraries you plan to use, and any questions you still have.