refactor: UI libs CSS+API refactor

examples/01-basic/01-minimal/App.tsx

@@ -1,16 +1,26 @@
-import "@blocknote/core/fonts/inter.css";
 import { useCreateBlockNote } from "@blocknote/react";
-import "@blocknote/react/style.css";
 import { uploadToTmpFilesDotOrg_DEV_ONLY } from "@blocknote/core";
 
-import { BlockNoteView } from "@blocknote/mantine";
-// import { BlockNoteView } from "@blocknote/ariakit";
+// import { BlockNoteView } from "@blocknote/mantine";
+// import "@blocknote/mantine/styles.css";
+import { BlockNoteView } from "@blocknote/ariakit";
+import "@blocknote/ariakit/style.css";
 // import { BlockNoteView } from "@blocknote/shadcn";
+// import "@blocknote/shadcn/style.css";
 
 export default function App() {
   // Creates a new editor instance.
   const editor = useCreateBlockNote({
     uploadFile: uploadToTmpFilesDotOrg_DEV_ONLY,
+    initialContent: [
+      {
+        type: "image",
+      },
+      {
+        type: "paragraph",
+        content: "Hello, world!",
+      },
+    ],
   });
 
   // Renders the editor instance using a React component.