M19: harden performance and recovery

docs/17-runbook.md

@@ -24,7 +24,7 @@ docker compose exec api python -m app.cli seed --reset
 Verify:
 
 ```bash
-curl http://localhost:8128/health          # {"status":"ok",...}
+curl http://localhost:8128/health/ready    # database-backed readiness
 curl -o /dev/null -w "%{http_code}\n" http://localhost:1228/   # 200
 make test                                  # isolated test project/database, all tests pass
 docker compose run --rm api ruff check .   # clean
@@ -52,7 +52,7 @@ invalidates its next request.
 
 ## n8n automation (one-time per environment)
 
-The n8n image used here (n8nio/n8n:latest, 2.x) requires an owner account before any
+The optional bundled fallback image (`n8nio/n8n:2.33.7`) requires an owner account before any
 workflow — including webhook registration — works reliably; `N8N_BASIC_AUTH_ACTIVE` no
 longer gates this. This is a one-time step per fresh `docker compose down -v`: