fix: restaurar deploy-staging via workflow_run (Gitea ≥1.25)

Remove job/reusable workflow do CI. Staging volta a ser workflow
separado após CI; 1.24 não implementava o trigger.

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitea/workflows/ci.yml

@@ -275,18 +275,3 @@ jobs:
 
           docker logs "$HEALTH_NAME"
           exit 1
-
-  # Staging deploy runs in-process after gates. workflow_run never fired on
-  # this Gitea 1.24 multi-job CI setup (0 deploy runs after green CI).
-  deploy-staging:
-    name: deploy-staging
-    needs: [static, unit, feature, browser, container]
-    if: gitea.event_name == 'push' && gitea.ref == 'refs/heads/main'
-    uses: ./.gitea/workflows/deploy-staging.yml
-    secrets:
-      REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
-      REGISTRY_PAT: ${{ secrets.REGISTRY_PAT }}
-      DOKPLOY_URL: ${{ secrets.DOKPLOY_URL }}
-      DOKPLOY_API_KEY: ${{ secrets.DOKPLOY_API_KEY }}
-      DOKPLOY_STAGING_COMPOSE_ID: ${{ secrets.DOKPLOY_STAGING_COMPOSE_ID }}
-      STAGING_URL: ${{ secrets.STAGING_URL }}