Remove daddelolymp image mirror from CI

Daddelolymp is backup mirror only, never builds or hosts images.
All builds and deployments happen exclusively on adriahub.

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

.forgejo/workflows/build-deploy.yml

@@ -6,7 +6,6 @@ on:
 
 env:
   REGISTRY: forgejo.adriahub.de
-  REGISTRY_MIRROR: forgejo.daddelolymp.de
   IMAGE: root/gaming-hub
 
 jobs:
@@ -67,27 +66,13 @@ jobs:
             docker push ${{ env.REGISTRY }}/${{ env.IMAGE }}:latest
           fi
 
-      - name: Mirror to registry (daddelolymp)
-        run: |
-          echo "${{ secrets.REGISTRY_DADDELOLYMP_PASSWORD }}" | docker login ${{ env.REGISTRY_MIRROR }} -u root --password-stdin
-          docker tag ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ steps.vars.outputs.tag }} \
-            ${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:${{ steps.vars.outputs.tag }}
-          docker push ${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:${{ steps.vars.outputs.tag }}
-          if [ "${GITHUB_REF_NAME}" = "main" ]; then
-            docker tag ${{ env.REGISTRY }}/${{ env.IMAGE }}:latest \
-              ${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:latest
-            docker push ${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:latest
-          fi
-
       - name: Cleanup build artifacts
         if: always()
         run: |
           TAG="${{ steps.vars.outputs.tag }}"
           docker rmi "${{ env.REGISTRY }}/${{ env.IMAGE }}:${TAG}" 2>/dev/null || true
-          docker rmi "${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:${TAG}" 2>/dev/null || true
           if [ "${GITHUB_REF_NAME}" = "main" ]; then
             docker rmi "${{ env.REGISTRY }}/${{ env.IMAGE }}:latest" 2>/dev/null || true
-            docker rmi "${{ env.REGISTRY_MIRROR }}/${{ env.IMAGE }}:latest" 2>/dev/null || true
           fi
           docker image prune -f 2>/dev/null || true
           docker builder prune -f --keep-storage=4GB 2>/dev/null || true