Recreated from a production B2C platform: sub-brand catalog, cart with free-shipping logic, coupon validation, server-side re-pricing of every line, and a Commerce Manager tab where add-to-cart events move a live demand ranking.
Auto Wash & Shine
bottle · 4.8
Wheel & Tire Blast
spray · 4.6
All-Surface Home Spray
spray · 4.9
Streak-Free Glass
spray · 4.7
Hull & Deck Cleaner
bottle · 4.5
Camp Gear Wash
bottle · 4.4
Add products from the storefront.
In the production version, checkout never trusts the client: every line is re-priced from the catalog, coupons validate through a database RPC, and the order commits atomically. The cart's numbers are display hints — the server's math is the only math that counts.
