ci: bump Node to 24 to match local lockfile; add history gossip proposal

package-lock.json was generated with npm 11 (Node 24). CI was running
Node 20 which resolves @emnapi deps differently, causing npm ci to fail.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '24'
 
       - name: Install Wails CLI
         run: go install github.com/wailsapp/wails/v2/cmd/wails@latest