Story

RHDH currently allows plugins to render content inside a shared Drawer component through the mount points`application/internal/drawer-state` and `application/internal/drawer-content` . As part of adopting Backstage’s New Frontend System, these mount points need to be migrated and replaced with new extensions that follow the NFS extension model.

Background

Dependencies and Blockers

QE impacted work

Documentation impacted work

Acceptance Criteria

• Design the Blueprint first and get approval from the team
• The existing `application/internal/drawer-state` and `application/internal/drawer-content` mount points are replaced with new extensions implemented using NFS, simplify the existing drawer content rendering logic 
• Test the behaviour with 2 drawers

Refs:

WG notes: https://docs.google.com/document/d/14G569uZZjST3j--cEX3_IZcwe3iRU091ETcwZ773GXE/edit?tab=t.0#heading=h.bvqw57j2nbwz

NFS migration spike : https://docs.google.com/document/d/1Qb0T1Iu3ego50iO4V7NErSD44NdWSvk5n70pZvj-EmU/edit?tab=t.0#heading=h.zc5io9fn4km1

Backstage docs:
https://backstage.io/docs/frontend-system/architecture/extensions#creating-an-extension