Description: I need a simple web app where shop owners can create their own WhatsApp Catalogue and customers can place orders through WhatsApp. Goal: Seller adds products → customer sees catalogue → adds to cart → enters quantity → clicks “Place Order on WhatsApp” → WhatsApp opens with prefilled order message. Important: No payment gateway, no delivery module, no complex checkout. Everything ends on WhatsApp. ⭐ Features Required (Seller Side): 1. Login with mobile OTP 2. Business Setup (name, phone, logo) 3. Add/Edit/Delete Products • name • price • image • description • category 4. Categories 5. Dashboard for products & orders 6. Share Catalogue Link for customers Example: myapp.in/store/yourstorename ⭐ Features Required (Customer Side): 1. Catalogue Page • product grid • categories • search 2. Product Detail Page • image • price • description • Add to cart • Qty selector 3. Cart • show line items • change quantity • total amount 4. Checkout Info • customer name • address • phone 5. WhatsApp Order • When user clicks “Order on WhatsApp”, open WhatsApp with automatically generated message containing: • Items • Qty • Price • Total • Customer details ⭐ What I EXPECT from you: • Full working MVP • Clean UI • Fast loading catalog • Proper WhatsApp deep link integration • Simple admin dashboard