Stabilize release regression tests

Contract-Neutral: Freezes mock sampler cadence only inside the existing cache regression and updates release-preflight assertions to recognize current conditional runner routing and shard-degradation behavior; runtime and public contracts are unchanged.

Change-source: pulse-maintainer

internal/monitoring/mock_unified_view_cache_test.go

@@ -2,14 +2,26 @@ package monitoring
 
 import (
 	"testing"
+	"time"
 
 	"github.com/rcourtman/pulse-go-rewrite/internal/mock"
 )
 
 func TestCurrentUnifiedStateViewCachedBetweenMockTicks(t *testing.T) {
 	previous := mock.IsMockEnabled()
+	previousConfig := mock.GetConfig()
+	if previous {
+		mustSetMockEnabled(t, false)
+	}
+	testConfig := previousConfig
+	testConfig.UpdateInterval = 5 * time.Minute
+	mock.SetMockConfig(testConfig)
 	mustSetMockEnabled(t, true)
-	t.Cleanup(func() { mustSetMockEnabled(t, previous) })
+	t.Cleanup(func() {
+		mustSetMockEnabled(t, false)
+		mock.SetMockConfig(previousConfig)
+		mustSetMockEnabled(t, previous)
+	})
 
 	m := &Monitor{}
 

scripts/release_control/internal/release_preflight_test.py

@@ -404,12 +404,15 @@ class ReleasePreflightTest(unittest.TestCase):
         workflow = (ROOT / ".github/workflows/create-release.yml").read_text()
         backend = (ROOT / "scripts/run-release-backend-tests.sh").read_text()
         self.assertIn("frontend_bundle:", workflow)
-        self.assertIn("runs-on: [self-hosted, Linux, X64, pulse-pve-build]", workflow)
-        self.assertIn("runs-on: [self-hosted, Linux, X64, pulse-pve-tests]", workflow)
+        bundle_job = workflow[
+            workflow.index("  frontend_bundle:") : workflow.index("  frontend_checks:")
+        ]
+        self.assertIn('"pulse-pve-build"', bundle_job)
         self.assertIn("./scripts/run-release-backend-tests.sh", workflow)
         backend_job = workflow[
             workflow.index("  backend_tests:") : workflow.index("  integration_tests:")
         ]
+        self.assertIn('"pulse-pve-tests"', backend_job)
         self.assertNotIn("      - frontend_checks\n    if:", backend_job)
         self.assertIn("go test -c -race", backend)
         self.assertIn("python3 scripts/shard_go_tests.py", backend)
@@ -418,7 +421,8 @@ class ReleasePreflightTest(unittest.TestCase):
             'MEMORY_WAIT_SECONDS="${PULSE_BACKEND_TEST_MEMORY_WAIT_SECONDS:-120}"',
             backend,
         )
-        self.assertIn("backend shard admission requires", backend)
+        self.assertIn("shard_admission_required_kib", backend)
+        self.assertIn("Degrading to $cpu_shards API shard(s)", backend)
         self.assertIn(
             "TestWebSocketOriginAllowsTrustedForwardedHostedOriginIPv6Loopback,"
             "TestServerInfoEndpointMethodNotAllowed",