fix(health): align vacuum backlog with PostgreSQL triggers

.github/workflows/ci.yml

@@ -43,6 +43,7 @@ jobs:
     env:
       TEST_REDIS_URL: redis://127.0.0.1:6379
       TEST_ANALYSIS_DATABASE_URL: postgresql://postgres:analysis-test-password@127.0.0.1:55433/postgres
+      TEST_VACUUM_DATABASE_URL: postgresql://postgres:analysis-test-password@127.0.0.1:55433/postgres
       TEST_INGEST_DATABASE_URL: postgresql://postgres:analysis-test-password@127.0.0.1:55433/postgres
     defaults:
       run:
@@ -61,6 +62,7 @@ jobs:
       - run: npm run contract:check
       - run: npm test
       - run: npm run test:analysis-integration
+      - run: npm run test:vacuum-integration
       - name: Configure bounded RAM Redis fixture
         run: |
           docker exec '${{ job.services.redis.id }}' redis-cli CONFIG SET maxmemory 96mb