test(demo): intentional FAIL for live_heap CI exclude wiring (#168)

Demo-only: ci.yml omits python_live_heap_3.14 from test_scenarios_exclude
and list-scenarios unit test expects live_heap in the included set.
Restore both to demo PASS.

Author: vlad-scherbich

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
       # exclude rather than a lookahead baked into test_scenarios.
       # Additional wheel-only 3.14 dirs (e.g. live_heap) are added to this list
       # when those scenarios land.
-      test_scenarios_exclude: '_3\.15$|^python_live_heap_3\.14$|^python_downstream_gate$'
+      test_scenarios_exclude: '_3\.15$|^python_downstream_gate$'  # DEMO_FAIL: restore live_heap exclude to demo PASS
     secrets: inherit
   full_host:
     uses: ./.github/workflows/test.yml

cmd/list-scenarios/main_test.go

@@ -137,7 +137,7 @@ func TestRun_ExcludeDropsMatchedNames(t *testing.T) {
 		names = append(names, e.Names)
 	}
 	joined := strings.Join(names, ", ")
-	want := "python_cpu, python_lock_3.14, python_mem_domain_3.14"
+	want := "python_cpu, python_lock_3.14, python_mem_domain_3.14, python_live_heap_3.14"  # DEMO_FAIL
 	if joined != want {
 		t.Fatalf("excluded set wrong:\n got %q\nwant %q", joined, want)
 	}