added extensive markdown rendering tests and Kotlin/JS externals for marked library

site/src/jsTest/kotlin/ReferencePageTest.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * Tests for Reference page rendering helpers
+ */
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class ReferencePageTest {
+    @Test
+    fun rendersReferenceListWithLinks() {
+        val docs = listOf(
+            "docs/Iterator.md",
+            "docs/guides/perf_guide.md"
+        )
+        val html = renderReferenceListHtml(docs)
+
+        // Basic structure
+        assertTrue(html.contains("<ul", ignoreCase = true), "Expected <ul> in reference list HTML: $html")
+
+        // Contains links to the docs routes
+        assertTrue(html.contains("href=\"#/docs/Iterator.md\""), "Should link to #/docs/Iterator.md: $html")
+        assertTrue(html.contains("Iterator.md"), "Should display file name Iterator.md: $html")
+
+        // Nested path should display directory info
+        assertTrue(html.contains("guides"), "Should include directory name for nested docs: $html")
+
+        // Chevron icon present
+        assertTrue(html.contains("bi-chevron-right"), "Should include chevron icon class: $html")
+    }
+}