feat(subscribe): --prune flag removes all stale webhooks first

Pipeline uses --prune so old tuna/test subscriptions don't linger after deploy.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -65,7 +65,7 @@ jobs:
           fi
           ssh -i ~/.ssh/id_rsa -p ${{ vars.SERVER_PORT }} ${{ vars.SERVER_USER }}@${{ vars.SERVER_HOST }} "
             cd /home/pkirillw/dockered-services/max-bot-test && \
-            docker compose exec -T app bin/console webhook:subscribe"
+            docker compose exec -T app bin/console webhook:subscribe --prune"
 
       - name: Health check
         run: |