Chained feat prereq wiki visibility fix

internal/topdata/wiki_native_test.go

@@ -727,6 +727,61 @@ datasets:
 	}
 }
 
+func TestWikiVisibilityIndexUsesBuiltVisibilityForReferenceHelpers(t *testing.T) {
+	policy, err := parseWikiVisibilityDefinitions([]byte(`
+datasets:
+  feat:
+    include:
+      - when: "{{true}}"
+    exclude:
+      - when: "{{hidden_ref(PREREQFEAT1, \"feat\")}}"
+`), "visibility.yaml")
+	if err != nil {
+		t.Fatalf("parse visibility policy: %v", err)
+	}
+	ctx := &wikiContext{
+		visibilityPolicy: &policy,
+		featRows: map[string]map[string]any{
+			"feat:zbase": {
+				"FEAT":        "Base Feat",
+				"DESCRIPTION": "Description",
+			},
+			"feat:dependent": {
+				"FEAT":        "Dependent Feat",
+				"DESCRIPTION": "Description",
+				"PREREQFEAT1": 1,
+			},
+			"feat:chain_dependent": {
+				"FEAT":        "Chain Dependent Feat",
+				"DESCRIPTION": "Description",
+				"PREREQFEAT1": 2,
+			},
+			"feat:missing_prereq": {
+				"FEAT":        "Missing Prereq Feat",
+				"DESCRIPTION": "Description",
+				"PREREQFEAT1": 999,
+			},
+		},
+		featIDToKey: map[int]string{1: "feat:zbase", 2: "feat:dependent"},
+	}
+	visible, err := ctx.buildWikiVisibilityIndex(&policy)
+	if err != nil {
+		t.Fatalf("build visibility index: %v", err)
+	}
+	if !visible["feat:zbase"] {
+		t.Fatalf("expected base feat to be visible")
+	}
+	if !visible["feat:dependent"] {
+		t.Fatalf("expected feat with visible prerequisite to remain visible")
+	}
+	if !visible["feat:chain_dependent"] {
+		t.Fatalf("expected feat with transitive visible prerequisite to remain visible")
+	}
+	if visible["feat:missing_prereq"] {
+		t.Fatalf("expected feat with missing prerequisite to be hidden")
+	}
+}
+
 func TestWikiVisibilityMetadataOverrideCannotBypassEligibility(t *testing.T) {
 	policy, err := parseWikiVisibilityDefinitions([]byte(`
 datasets: