Inside Emoney profit tracker: a pragmatic Next.js app for reseller operations

emoney-profit-tracker is a small operational app for a reseller workflow. It tracks purchased products, completed sales, profit trends over time, and a lightweight "quests" system for recurring tasks. The problem it solves is familiar: once buying, listing, shipping, and bookkeeping are spread across different tools, it becomes hard to answer basic questions like "what is actually making money?" and "what still needs attention?" This codebase answers that with a single Next.js 15 App Router application. It is not trying to be a heavily server-rendered product. Most of the interesting work happens on the client: auth checks, data fetching, table filtering, form state, and mutation flows. That makes the app easy to reason about for dashboard-style work, even if it leaves some server-side capabilities unused. Architecture and the shape of the app The project is organised around App Router route groups plus feature-specific client components. app/layout.tsx defines the global shell, metada