替换为服务官方图标

NOTICE.md

@@ -3,4 +3,15 @@
 Copyright (c) sumi.work. Website text, page structure, stylesheets, and local
 interface artwork are owned by sumi.work unless otherwise noted.
 
-No third-party images are currently used by this page.
+## Icon Credits
+
+The service icons are fetched from their respective public service websites or
+official/open-source project assets:
+
+- `assets/icons/deepseek.ico`: DeepSeek platform favicon
+- `assets/icons/gemini.svg`: Google Gemini public web asset
+- `assets/icons/git.svg`: Git logo from git-scm.com
+- `assets/icons/syncthing.svg`: Syncthing project logo
+- `assets/icons/frp.svg`: FRP icon from dashboard-icons
+
+The names and marks of these services belong to their respective owners.