docs: add trademark disclaimer to README and website footer

GitHub and GitHub Copilot are trademarks of Microsoft Corporation.
Aryx is an independent project, not affiliated with or endorsed by
Microsoft or GitHub.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

README.md

@@ -94,3 +94,7 @@ bun run publish-release # publish to GitHub Releases
 ```
 
 Tagged releases use GitHub Actions to build and publish Windows (NSIS), macOS (DMG, signed + notarized), and Linux (AppImage) artifacts. The app uses `electron-updater` for in-app updates.
+
+## Trademarks
+
+GitHub and GitHub Copilot are trademarks of Microsoft Corporation. Aryx is an independent project, not affiliated with or endorsed by Microsoft or GitHub.

website/src/layouts/Base.astro

@@ -159,6 +159,10 @@ const {
           </svg>
           <span>by Dávid Kaya.</span>
         </div>
+        <p class="mt-4 text-center text-[11px] leading-relaxed text-warm-700">
+          GitHub and GitHub Copilot are trademarks of Microsoft Corporation.<br />
+          Aryx is an independent project, not affiliated with or endorsed by Microsoft or GitHub.
+        </p>
       </div>
     </footer>