# `POST /article/{sku}/image`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Add article image

Accepts a full-size AVIF body (`Content-Type: image/avif`) or WebP body (`Content-Type: image/webp`).
WebP images are automatically converted to AVIF on the server.
Full: stored as-is when already AVIF and ≤1000×1000; otherwise scaled to max 1000×1000.
Thumb always scaled to max 200×200. Stores hash/thumbhash, links `articlepic`.
Auth like GET by SKU.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `sku` | yes | string | Article SKU |

## Body

Raw binary (`image/avif`).

Raw binary (`image/webp`).

## Signals

On success, emits SSE signal: `article-<sku>` (see [`GET /events`](../events.md)).

## Response `201`

Image stored and linked

```json
{
  "image": {
    "picId": 1,
    "sort": 1,
    "full": {
      "w": 1,
      "h": 1,
      "size": 1
    },
    "thumb": {
      "w": 1,
      "h": 1
    },
    "hash": "…",
    "thumbHash": "…"
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Missing body or invalid image — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Article not found — `{"error":"…"}` |

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