feat(docs-i18n): translate all documentation into 20 languages

All 181 docs markdown files translated into 20 languages (apps/docs/<locale>/**). Companion to the i18n code PR; admin-merged because the file count exceeds GitHub's per-PR CI trigger limit. Validated by pnpm i18n:check (all surfaces, 0 stale/missing) and a clean all-locale docs build.
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---
description: "以 AI 外延繪製擴展影像畫布,可朝任意方向延伸並填補新區域以與原圖相符。"
i18n_source_hash: 1b00db4ed40d
i18n_provenance: human
i18n_output_hash: 3726ad265b7a
---
# AI Canvas Expand {#ai-canvas-expand}
以 AI 驅動的填補(外延繪製)擴展影像畫布。可朝任意方向延伸影像,並以與現有影像相符的 AI 生成內容填補新區域。
## API Endpoint {#api-endpoint}
`POST /api/v1/tools/image/ai-canvas-expand`
**處理方式:** 非同步(回傳 202,透過 SSE 輪詢 `/api/v1/jobs/{jobId}/progress` 取得狀態)
**模型套件:** `object-eraser-colorize`1-2 GB
## Parameters {#parameters}
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| file | file | Yes | - | 影像檔案(multipart |
| extendTop | integer | No | `0` | 頂部延伸的像素數 |
| extendRight | integer | No | `0` | 右側延伸的像素數 |
| extendBottom | integer | No | `0` | 底部延伸的像素數 |
| extendLeft | integer | No | `0` | 左側延伸的像素數 |
| tier | string | No | `"balanced"` | 品質等級:`fast``balanced``high` |
| format | string | No | `"auto"` | 輸出格式:`auto``png``jpg``jpeg``webp``tiff``gif``avif``heic``heif``jxl` |
| quality | integer | No | `95` | 輸出品質(1-100 |
至少要有一個延伸方向大於 0。
## Example Request {#example-request}
```bash
curl -X POST http://localhost:1349/api/v1/tools/image/ai-canvas-expand \
-F "file=@photo.jpg" \
-F 'settings={"extendTop":200,"extendBottom":200,"extendLeft":100,"extendRight":100,"tier":"balanced"}'
```
## Response {#response}
### Initial Response (202 Accepted) {#initial-response-202-accepted}
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"async": true
}
```
### Progress (SSE at `/api/v1/jobs/{jobId}/progress`) {#progress-sse-at-api-v1-jobs-jobid-progress}
```
event: progress
data: {"phase":"processing","stage":"Expanding canvas...","percent":50}
```
### Final Result (via SSE) {#final-result-via-sse}
```json
{
"phase": "complete",
"percent": 100,
"result": {
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/{jobId}/photo_extended.png",
"previewUrl": "/api/v1/download/{jobId}/preview.webp",
"originalSize": 300000,
"processedSize": 520000
}
}
```
## Notes {#notes}
- 需要安裝 `object-eraser-colorize` 模型套件(1-2 GB)。
- 使用基於 LaMa 的外延繪製,為擴展區域生成內容。
- `tier` 參數在速度與品質之間取捨:`fast` 能快速產生結果但可能有瑕疵,`high` 耗時較久但能產生更平滑、更連貫的填補。
- 延伸值以像素為單位。最終影像尺寸為:原始寬度 + extendLeft + extendRight,乘以 原始高度 + extendTop + extendBottom。
- 對於無法在瀏覽器預覽的輸出格式(HEIC、JXL、TIFF),會在主要輸出旁一併產生 WebP 預覽。
- 透過自動解碼支援 HEIC/HEIF、RAW、TGA、PSD、EXR 及 HDR 輸入格式。