replace sidebar, write keybindings

docs/index.mdx

@@ -1,5 +1,7 @@
 ---
 sidebar_position: 1
+id: "index"
+title: "Home"
 ---
 
 import Card from '@site/src/components/card.tsx';
@@ -10,6 +12,10 @@ import Card from '@site/src/components/card.tsx';
 
 Wave is an open-source terminal that adds the ability to launch graphical widgets, controlled and integrated directly with the CLI.
 
+References:
+
+* [Key Bindings](./keybindings)
+
 ## Features
 
 <Card />