docs(cookbook): remove Controller sidebar group and its sub-pages

Author: claude

docs/.vitepress/config.mjs

@@ -117,16 +117,6 @@ export default defineConfig({
         link: "/development/controller/life_cycle",
         collapsed: true,
         items: [
-          {
-            text: "Controller",
-            link: "/development/controller/init",
-            collapsed: true,
-            items: [
-              { text: "Init", link: "/development/controller/init" },
-              { text: "Event", link: "/development/controller/event" },
-              { text: "Navigated", link: "/development/controller/navigated" },
-            ],
-          },
           {
             text: "View",
             link: "/development/view/overview",

docs/development/controller/controller.md

@@ -6,7 +6,7 @@ outline: [2, 4]
 With abap2UI5 up and running, here are a few directions to take.
 
 #### Development
-Learn how to build views, handle events, share data, and work with tables. The development guide covers what you need for everyday work. Start with the [Development guide](/development/controller/controller).
+Learn how to build views, handle events, share data, and work with tables. The development guide covers what you need for everyday work. Start with the [Development guide](/development/controller/life_cycle).
 
 #### Configuration
 Getting ready for production? The configuration guides walk through security, performance tuning, Launchpad integration, and more. Start with the [Configuration guide](/configuration/setup).