I run a private therapy practice and I’m ready to replace my patch-work of spreadsheets with a single, purpose-built client management system. At this stage I only need reliable appointment scheduling, yet I want the codebase structured so future add-ons—client notes, billing, even Google or Outlook sync—can slot in without a rebuild. Here’s what I’m looking for right now: • Secure client database with role-based access (therapist vs. admin). • Intuitive appointment calendar that lets me set availability, book sessions, send automated reminders, and view a day/week overview at a glance. • Responsive interface that works smoothly on desktop, tablet, and phone—most of my scheduling happens between sessions on a tablet. • Admin dashboard with quick filters (upcoming, completed, cancelled) and a simple export to CSV for backups. • Clean, well-documented code and a brief hand-over guide so I can train a receptionist without tech jargon. I’m open to the stack you prefer—Laravel, Django, Node, or comparable—provided data is encrypted in transit and at rest and the UI stays lightweight. Please outline: • Your proposed tech stack. • A milestone plan from prototype to final testing. • Any similar systems you’ve built, especially in healthcare or counseling settings. The goal is a working, polished system I can log into, start adding clients, and book sessions immediately, with room to grow later.