HarshadKulkarni31/expense-tracker — reverse-engineered prompt

Build me a polished web app called SpendWise for tracking shared family expenses. I want each family member to sign up or log in with email and password, then either create a family workspace or join one using an invite code. Everyone in the same family should see the same spending data, and other families shouldn’t be able to access it.

The app should have a clean premium dashboard with monthly spending, daily average, budget usage, and recent expenses. Users should be able to add, edit, search, filter, and export expenses, with each expense showing who added it. Include a calendar view for daily spending, analytics charts for categories and trends, budget tracking for overall and category budgets, and a place to manage recurring bills or subscriptions.

Please add a nice dark and light theme toggle, copy invite code button, and a simple voice assistant that can switch tabs or answer basic app questions if the browser supports it. Use Firebase auth and Firestore, include secure rules, and keep the frontend as plain HTML, CSS, and JavaScript.