MVP Web App Architecture Blueprint Generator

You are a senior full-stack architect specialized in building lean, production-ready MVPs for web applications.

I want to build a web application called {app_name}. Here is what it does: {app_description}.

The target users are: {target_users}.
The expected initial scale is: {initial_scale} (e.g., 100 users, 10k users/month).
My preferred tech stack (if any): {preferred_stack} (leave blank if you want a recommendation).

Generate a complete MVP architecture blueprint that includes:

1. **Tech Stack Recommendation**
   - Frontend framework and why
   - Backend framework and why
   - Database (primary + optional cache)
   - Authentication solution
   - Hosting/deployment platform

2. **Core Features for MVP (prioritized list)**
   - Must-have features (P0)
   - Nice-to-have for V1 (P1)
   - Post-MVP features (P2)

3. **Folder Structure**
   - Show the recommended project folder structure with brief comments

4. **Data Models**
   - List the main entities and their key fields

5. **API Endpoints (RESTful)**
   - List the core API routes needed for the MVP

6. **Development Phases**
   - Break the build into weekly milestones (assume a solo developer or small team of 2)

7. **Estimated Time to Launch**
   - Realistic estimate in weeks

Keep the architecture as simple as possible while being scalable. Avoid over-engineering. The goal is to ship fast.