Bump CI Node version from 20 to 24 (#3)

Match the project's local dev runtime (Node 24) and move off the now-deprecated Node 20 line.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: ShiosOS

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: npm
 
       - run: npm ci