Merge pull request #64 from abap2UI5/claude/add-advanced-topics-menu-wFDwX

Add documentation for UI5 Legacy-Free frontend variant

Author: oblomov-dev

docs/.vitepress/config.mjs

@@ -259,6 +259,7 @@ export default defineConfig({
           { text: "RFC Connector", link: "/advanced/rfc" },
           { text: "HTTP Connector", link: "/advanced/http" },
           { text: "Fiori Elements Integration", link: "/advanced/fiori" },
+          { text: "UI5 Legacy-Free", link: "/advanced/legacy_free" },
           {
             text: "Extensibility",
             items: [

docs/advanced/legacy_free.md

@@ -0,0 +1,13 @@
+---
+outline: [2, 4]
+---
+# UI5 Legacy-Free
+
+abap2UI5-frontend-legacy-free is a frontend variant for abap2UI5 based on OpenUI5's legacy-free distribution. It removes deprecated features such as jQuery dependencies, synchronous APIs, and compatibility shims, providing a preview of the UI5 2.x API surface.
+
+- Future-proof: applications stay compatible with UI5 2.x
+- Leaner runtime: smaller footprint and improved performance
+- Modern async patterns: asynchronous module loading and Promise-based APIs
+- Runs in parallel to the classic abap2UI5 frontend, so both can be evaluated side by side
+
+For full details, see the repository: [abap2UI5-frontend-legacy-free](https://github.com/abap2UI5/frontend-legacy-free)