feat: navigation accordion

[isadorable-png]

Feature Request

User story
As a platform user, I want the DAO detail sidebar to be clear and enable me to navigate through the new and nested features.

Description
We are updating the DAO detail sidebar to improve structure and scalability. Items related to security will now be grouped under a nested dropdown. On the mobile version, the sidebar will also include a dropdown navigation, allowing users to quickly switch between pages without losing context.

Solution
➡️ [Desktop]
Security Items: Add a nested dropdown in the sidebar.
Other items: Regular sidebar item.

• Figma

➡️ [Mobile]
Replace the full sidebar with a dropdown menu that lists available pages.

• Figma

Screen.Recording.2025-09-17.at.13.30.33.mov

Ensure that the design supports upcoming features like the governance front-end while keeping the navigation intuitive and consistent across devices.

• Add sidebar desktop and mobile version to the design system