Merge offline documentation font fix from main into test

apps/pac-docs/app/og/docs/[...slug]/route.tsx

@@ -3,6 +3,11 @@ import { notFound } from 'next/navigation';
 import { ImageResponse } from 'next/og';
 import { generate as DefaultImage } from 'fumadocs-ui/og';
 import { appName } from '@/lib/shared';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+
+// 中文字形随文档站部署，避免 Next/OG 在构建或分享时临时请求 Google Fonts。
+const font = readFileSync(join(process.cwd(), 'assets/fonts/NotoSansSC-Regular.ttf'));
 
 export const revalidate = false;
 
@@ -12,10 +17,13 @@ export async function GET(_req: Request, { params }: RouteContext<'/og/docs/[...
   if (!page) notFound();
 
   return new ImageResponse(
-    <DefaultImage title={page.data.title} description={page.data.description} site={appName} />,
+    <div style={{ display: 'flex', width: '100%', height: '100%', fontFamily: 'PAC Docs Sans' }}>
+      <DefaultImage title={page.data.title} description={page.data.description} site={appName} />
+    </div>,
     {
       width: 1200,
       height: 630,
+      fonts: [{ name: 'PAC Docs Sans', data: font, weight: 400, style: 'normal' }],
     },
   );
 }

apps/pac-docs/assets/fonts/OFL.txt

+Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name 'Source'
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+https://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

apps/pac-docs/assets/fonts/README.md

+# 文档分享图字体
+
+`NotoSansSC-Regular.ttf` 为 Noto Sans SC 的 400 字重静态实例，覆盖文档中的中英文字形。
+文档 OG 图片直接读取本地字体，不在构建或渲染时下载字体。
+
+来源：Google Fonts 的 [Noto Sans SC](https://github.com/google/fonts/tree/main/ofl/notosanssc)。
+原文件：`NotoSansSC[wght].ttf`；使用 fontTools 将 `wght` 固定为 400，保留全部字形。
+字体按随附 `OFL.txt` 的 SIL Open Font License 1.1 分发。

apps/pac-docs/next.config.mjs

@@ -7,6 +7,9 @@ const config = {
   reactStrictMode: true,
   // 容器化产物:Next 输出 standalone(.next/standalone + server.js),Dockerfile prod 阶段直接 node 它
   output: 'standalone',
+  outputFileTracingIncludes: {
+    '/og/docs/**': ['./assets/fonts/NotoSansSC-Regular.ttf', './assets/fonts/OFL.txt'],
+  },
   // 挂在宿主 pac.jarvismedical.asia/docs 路径下:让静态资源引用走 /docs/_next/*(否则与 pac-web 的 /_next 撞)。
   // 仅生产生效(本地 dev 不加前缀,正常调试);nginx 把 /docs/_next/* rewrite 回 /_next/* 转发到本服务。
   assetPrefix: process.env.NODE_ENV === 'production' ? '/docs' : undefined,