Docs - Update getting started (#19976)

- Add product tour video
- Add new graphic design assets

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Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Etienne <etiennejouan@users.noreply.github.com>

packages/twenty-docs/getting-started/core-concepts/data-model.mdx

@@ -4,6 +4,8 @@ description: Understand how Twenty structures your data with objects, fields, an
 icon: "database"
 ---
 
+import { VimeoEmbed } from '/snippets/vimeo-embed.mdx';
+
 Everything in Twenty is built around **objects** and **fields** — the building blocks of your data model.
 
 ## Objects
@@ -41,3 +43,5 @@ Unlike traditional CRMs where you're limited to pre-defined fields on pre-define
 <Card title="Deep dive into the Data Model" icon="arrow-right" href="/user-guide/data-model/overview">
   Full reference on objects, fields, relations, and how to configure them.
 </Card>
+
+<VimeoEmbed videoId="1185511827" title="Data model" />