docs: update GitHub Pages footer license from MIT to SAY NO TO SUICIDE PUBLIC LICENSE

Agent-Logs-Url: https://github.com/unbug/tday/sessions/7cd00f50-e040-4225-b772-07c60821896e

Co-authored-by: unbug <799578+unbug@users.noreply.github.com>

Author: Copilot

docs/index.html

@@ -659,7 +659,7 @@ <h2 data-i18n="platformsH2">Download Tday</h2>
 <footer>
   <p data-i18n-html="footerText">
     <a href="https://github.com/unbug/tday" target="_blank" rel="noopener">Tday</a>
-    is open source under the MIT license ·
+    is open source under the <a href="https://github.com/unbug/snts" target="_blank" rel="noopener">SAY NO TO SUICIDE PUBLIC LICENSE</a> ·
     <a href="https://github.com/unbug/tday/releases" target="_blank" rel="noopener">Releases</a>
     ·
     <a href="https://github.com/unbug/tday/issues" target="_blank" rel="noopener">Issues</a>
@@ -707,7 +707,7 @@ <h2 data-i18n="platformsH2">Download Tday</h2>
         platformsH2: 'Download Tday',
         platformsP: 'Free and open source \u2014 pick your platform below',
         viewReleases: 'View All Releases on GitHub',
-        footerText: '<a href="https://github.com/unbug/tday" target="_blank" rel="noopener">Tday</a> is open source under the MIT license \u00b7 <a href="https://github.com/unbug/tday/releases" target="_blank" rel="noopener">Releases</a> \u00b7 <a href="https://github.com/unbug/tday/issues" target="_blank" rel="noopener">Issues</a> \u00b7 <a href="https://x.com/unbug" target="_blank" rel="noopener">@unbug on X</a>',
+        footerText: '<a href="https://github.com/unbug/tday" target="_blank" rel="noopener">Tday</a> is open source under the <a href="https://github.com/unbug/snts" target="_blank" rel="noopener">SAY NO TO SUICIDE PUBLIC LICENSE</a> \u00b7 <a href="https://github.com/unbug/tday/releases" target="_blank" rel="noopener">Releases</a> \u00b7 <a href="https://github.com/unbug/tday/issues" target="_blank" rel="noopener">Issues</a> \u00b7 <a href="https://x.com/unbug" target="_blank" rel="noopener">@unbug on X</a>',
         hintMacArm: 'Downloads a .dmg installer \u00b7 macOS arm64 + x64 available',
         hintMac: 'Downloads a .dmg installer \u00b7 macOS arm64 + x64 available',
         hintWin: 'Downloads a .exe installer or .zip archive \u00b7 Windows x64',
@@ -750,7 +750,7 @@ <h2 data-i18n="platformsH2">Download Tday</h2>
         platformsH2: '下载 Tday',
         platformsP: '免费开源 — 选择您的平台',
         viewReleases: '在 GitHub 查看所有版本',
-        footerText: '<a href="https://github.com/unbug/tday" target="_blank" rel="noopener">Tday</a> 基于 MIT 许可证开源 \u00b7 <a href="https://github.com/unbug/tday/releases" target="_blank" rel="noopener">版本发布</a> \u00b7 <a href="https://github.com/unbug/tday/issues" target="_blank" rel="noopener">问题反馈</a> \u00b7 <a href="https://x.com/unbug" target="_blank" rel="noopener">@unbug on X</a>',
+        footerText: '<a href="https://github.com/unbug/tday" target="_blank" rel="noopener">Tday</a> 基于 <a href="https://github.com/unbug/snts" target="_blank" rel="noopener">SAY NO TO SUICIDE PUBLIC LICENSE</a> 开源 \u00b7 <a href="https://github.com/unbug/tday/releases" target="_blank" rel="noopener">版本发布</a> \u00b7 <a href="https://github.com/unbug/tday/issues" target="_blank" rel="noopener">问题反馈</a> \u00b7 <a href="https://x.com/unbug" target="_blank" rel="noopener">@unbug on X</a>',
         hintMacArm: '下载 .dmg 安装包 \u00b7 支持 macOS arm64 + x64',
         hintMac: '下载 .dmg 安装包 \u00b7 支持 macOS arm64 + x64',
         hintWin: '下载 .exe 安装包或 .zip 压缩包 \u00b7 Windows x64',