# Website Data Flow (Strict)

This document defines the **apps/website** data flow.

Authoritative contract: [`docs/architecture/website/WEBSITE_CONTRACT.md`](docs/architecture/website/WEBSITE_CONTRACT.md:1).

Website scope:

- `apps/website/**`

## 1) Website role

The website is a **delivery layer**.

It renders truth from the API and forwards user intent to the API.

## 2) Read flow

```text
RSC page.tsx
  ↓
PageQuery
  ↓
API client (infra)
  ↓
API Transport DTO
  ↓
Page DTO
  ↓
Presenter (client)
  ↓
ViewModel (optional)
  ↓
Presenter (client)
  ↓
ViewData
  ↓
Template
```

## 3) Write flow

All writes enter through **Server Actions**.

```text
User intent
  ↓
Server Action
  ↓
Command Model / Request DTO
  ↓
API
  ↓
Revalidation
  ↓
RSC reload
```

## 4) Non-negotiable rules

1. Templates accept ViewData only.
2. Page Queries do not format.
3. Presenters do not call the API.
4. Client state is UI-only.