test(resilience): list credentialHealthCheck in the configuration-only key set

#12043 added credentialHealthCheck.intervalMinutes to DEFAULT_RESILIENCE_SETTINGS
and to the /api/resilience GET projection. It is operator configuration (the
background sweep cadence), not runtime breaker state, but the exact key-set
assertion was never updated, so resilience-http-e2e failed on the release tip.
The providerBreakers/runtime absence checks stay as they were.

Refs #12732

changelog.d/maintenance/12732-resilience-api-credential-health-key.md

@@ -0,0 +1 @@
+- **test(resilience):** the `/api/resilience` configuration-only key-set assertion now lists `credentialHealthCheck`, the sweep-interval setting #12043 added to the projection, so the integration suite stops reading a documented configuration key as leaked runtime state ([#12732](https://github.com/diegosouzapw/OmniRoute/issues/12732))

tests/integration/resilience-http-e2e.test.ts

@@ -557,10 +557,12 @@ test("resilience API only exposes configuration, not runtime breaker state", asy
   assert.equal(response.status, 200);
   // Exact key set — this is the whole point of the test: configuration only.
   // `providerQuotaOverrides` joined the projection in #9871;
-  // `quotaPreflight` joined in #12014 (Settings → Routing Quota Preflight card).
+  // `quotaPreflight` joined in #12014 (Settings → Routing Quota Preflight card);
+  // `credentialHealthCheck` joined in #12043 (the sweep's intervalMinutes setting).
   assert.deepEqual(Object.keys(json).sort(), [
     "comboCooldownWait",
     "connectionCooldown",
+    "credentialHealthCheck",
     "legacy",
     "providerBreaker",
     "providerCooldown",