Generate README with Badges and Architecture Diagram

Generate a professional README.md for this project by analyzing the codebase. Include:

**Header:**
- Project name and one-line description
- Badges: CI status, coverage, license, npm version, last commit

**Overview:**
- What the project does (2-3 paragraphs)
- Key features as bullet points
- Live demo link placeholder

**Architecture:**
- Mermaid diagram showing system components and data flow
- Technology stack table (frontend, backend, database, infrastructure)

**Getting Started:**
- Prerequisites with version requirements
- Installation steps (copy-paste ready)
- Environment variables table with descriptions and examples
- Database setup commands
- Development server startup

**Usage:**
- API examples with curl commands
- Key configuration options
- Common workflows

**Project Structure:**
- Directory tree with descriptions for key folders

**Contributing:**
- Branch naming, commit format, PR process
- Code style and linting rules

**License section**

Analyze the actual project structure and dependencies to make this accurate, not generic.