docs: sunset the docs/plugins section as legacy documentation

Mark all pages in docs/plugins/ with legacy admonition banners pointing
to the appropriate new frontend system and backend system documentation.
Rename the sidebar section to "Plugins (Legacy)" and move it lower in
the navigation hierarchy. Add cross-references from the new frontend
system building-plugins guide to relevant cross-cutting topics (i18n,
analytics, feature flags, search) that still live in the legacy section.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor
This commit is contained in:
Patrik Oldsberg
2026-03-17 10:49:54 +01:00
parent 05594087b9
commit 35e130c601
22 changed files with 181 additions and 55 deletions
+6
View File
@@ -4,6 +4,12 @@ title: Create a Backstage Plugin
description: Documentation on How to Create a Backstage Plugin
---
:::caution Legacy Documentation
This page describes creating plugins for the **old frontend system**. For creating plugins using the new frontend system, see [Building Frontend Plugins](../frontend-system/building-plugins/01-index.md). For creating backend plugins, see [Building Backend Plugins and Modules](../backend-system/building-plugins-and-modules/01-index.md).
:::
A Backstage Plugin adds functionality to Backstage.
## Create a Plugin