# Overview

## Architecture Diagram

```{mermaid}
  flowchart LR
    User --> UI
    UI --> Service
    Service --> DB[(Database)]
```

## High-Level Components
- Component A — purpose, inputs/outputs
- Component B — ...

## Interactions
Describe how components communicate.
- See [Components](components/index.rst)

## Constraints & Trade-offs
- Performance, cost, complexity, hardware constraints (if any)