refactor(ci): switch to Watchtower-only auto-update, remove Portainer webhook

.gitea/workflows/deploy.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ secrets.REGISTRY_USER }}
-          password: ${{ secrets.REGISTRY_TOKEN }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
 
       - name: Extract metadata
         id: meta
@@ -47,9 +47,3 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=registry,ref=${{ env.IMAGE }}:cache
           cache-to: type=registry,ref=${{ env.IMAGE }}:cache,mode=max
-
-      - name: Trigger Portainer webhook
-        if: ${{ success() && secrets.PORTAINER_WEBHOOK_URL != '' }}
-        run: |
-          echo "Triggering Portainer redeploy..."
-          curl -sfSL -X POST "${{ secrets.PORTAINER_WEBHOOK_URL }}" || echo "Webhook failed (non-critical)"