fix: correct Gitea Alpine package registry upload URL

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

.gitea/workflows/apk-publish.yml

@@ -68,8 +68,7 @@ jobs:
       - name: Publish to Gitea Registry
         run: |
           apk_file=$(find ~build/packages -name "*.apk" -type f | head -1)
-          branch=$(echo "${{ github.ref_name }}" | sed 's/^v//')
           curl -X PUT \
             -H "Authorization: token ${{ secrets.ACCESS_TOKEN }}" \
             -T "$apk_file" \
-            "${{ github.api_url }}/packages/${{ github.repository_owner }}/apk/${{ github.repository }}/$branch"
+            "${{ github.server_url }}/api/packages/${{ github.repository_owner }}/alpine"