fix: retry loop up to 60s in n8n smoke test healthz check

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

n8n/postsync-smoke-test.yaml

@@ -46,11 +46,15 @@ spec:
             }
 
             echo "--- [1/1] GET /healthz ---"
-            HEALTH=$(curl -sf --max-time 15 --retry 3 --retry-delay 5 --retry-all-errors \
-              "$BASE/healthz") || fail "GET /healthz unreachable"
-            echo "$HEALTH"
-            echo "$HEALTH" | grep -qF '"status":"ok"' \
-              || fail "health response missing status:ok"
+            RESULT=""
+            for i in $(seq 1 12); do
+              RESULT=$(curl -sf --max-time 10 "$BASE/healthz" 2>/dev/null) && break
+              echo "Waiting... (attempt $i/12)"
+              sleep 5
+            done
+            [ -n "$RESULT" ] || fail "GET /healthz unreachable after 60s"
+            echo "$RESULT"
+            echo "$RESULT" | grep -qF '"status":"ok"' || fail "healthz did not return status ok"
             echo "OK"
 
             notify "[OK] n8n PostSync passed"