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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: "应用双色调效果,可自定义阴影色和高光色。"
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i18n_source_hash: ab99c4f0152c
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i18n_provenance: human
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i18n_output_hash: 26094fc96843
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---
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# 双色调 {#duotone}
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为图片应用双色调效果。图片先被转换为灰度,然后映射到阴影色(暗部色调)与高光色(亮部色调)之间的渐变。
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## API 端点 {#api-endpoint}
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`POST /api/v1/tools/image/duotone`
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接受 multipart 表单数据,包含一个图片文件和一个 JSON `settings` 字段。
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## 参数 {#parameters}
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| 参数 | 类型 | 必填 | 默认值 | 说明 |
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|-----------|------|----------|---------|-------------|
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| shadow | string | 否 | `"#1e3a8a"` | 阴影十六进制颜色(应用于暗部色调) |
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| highlight | string | 否 | `"#fbbf24"` | 高光十六进制颜色(应用于亮部色调) |
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| intensity | integer | 否 | `100` | 效果强度(0-100);0 返回原图,100 应用完整双色调 |
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## 请求示例 {#example-request}
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/image/duotone \
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-H "Authorization: Bearer si_your-api-key" \
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-F "file=@photo.jpg" \
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-F 'settings={"shadow": "#0f172a", "highlight": "#f97316", "intensity": 80}'
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```
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## 响应示例 {#example-response}
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```json
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{
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.jpg",
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"originalSize": 2450000,
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"processedSize": 1870000
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}
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```
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## 注意事项 {#notes}
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- 输出格式与输入格式一致。HEIC、RAW、PSD 和 SVG 输入在处理前会自动解码。
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- `intensity` 小于 100 时会将双色调结果与原始图片混合,从而获得更柔和的效果。
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- 常见的双色调搭配包括藏青/金、青绿/珊瑚,以及紫色/粉色。
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