I need a streamlined, browser-based platform that lets me run day-to-day operations without jumping between apps. At its core the system must support secure email-and-password sign-in, then give me the following workflow: • Expenses – enter costs manually or snap a photo; the image should display inside the expense record and be stored for later export. • Mileage – pull daily totals from TripLog through their public API and add them to the same expense view so reporting stays in one place. • Calendar sync – every new quote, job or invoice I create should instantly appear on my Google Calendar, and any edits I make in Google Calendar need to flow back into the app in real time. • Quoting – allow me to build item-by-item estimates (service name, quantity, price) and save them as branded PDFs generated with PDFKit. • One-tap send – from any quote or invoice I want to click once and have an email drafted with my template message in the body and the PDF attached. • Invoicing – convert an accepted quote into an invoice, keep status (sent / paid), and include mileage and expense lines when needed. Please keep the tech stack lightweight and easy to maintain—modern JavaScript (React or Vue), Node/Express, and a SQL or NoSQL store are all fine as long as API calls to TripLog and Google Calendar remain stable. The finished deliverable should be deployed to my hosting of choice, fully tested, and ready for daily use.