Consolidate landing page and remove redundant contribute-index

Author: leemthompo

contribute-docs/contribute-index.md

@@ -4,21 +4,38 @@ navigation_title: Contribute to the docs
 
 # Contribute to Elastic documentation
 
-Find the relevant pages for contributing to the official Elastic documentation.
+In April 2025, Elastic migrated to a new documentation system at [elastic.co/docs](https://www.elastic.co/docs), using Markdown and the [`docs-builder`](https://elastic.github.io/docs-builder/) toolchain.
 
-## Contribute to current docs
+This documentation site includes docs for
+- {{stack}} 9.x
+- {{ece}} 4.x
+- {{eck}} 3.x
+- All unversioned products like {{ech}} and {{serverless-full}}.
+
+This documentation is [**cumulative**](how-to/cumulative-docs/index.md): a new set of docs is not published for every minor release. Instead, each page stays valid over time and incorporates version-specific changes.
 
-We have two distinct systems for contributing to the current Elastic docs:
+:::{tip}
+To learn more about the new docs UX, read [how to use the documentation](/get-started/howto-use-the-docs.md).
+:::
+
+## Contribute to current docs
 
 |System|What it covers|Published at|Format|How to contribute
 |----|----|----|----|----|----|
-|Main docs|Guides, Troubleshooting, release notes, etc.|[elastic.co/docs](https://www.elastic.co/docs)|Markdown+|- [Contribution guide](./contribute-index.md) <br><br> - [Syntax guide](./syntax/index.md)|
-|API references|Elastic REST APIs|[elastic.co/docs/api](https://www.elastic.co/docs/api/)|[OpenAPI](https://swagger.io/specification/)|[Contribute to API docs](./api-docs/index.md)|
+|Main docs|Guides, troubleshooting, release notes, etc.|[elastic.co/docs](https://www.elastic.co/docs)|Markdown|- [On the web](on-the-web.md) (quick edits) <br> - [Locally](locally.md) (complex changes) <br> - [Syntax guide](syntax/index.md)|
+|API references|Elastic REST APIs|[elastic.co/docs/api](https://www.elastic.co/docs/api/)|[OpenAPI](https://swagger.io/specification/)|[Contribute to API docs](api-docs/index.md)|
 
 :::{note}
-If you need to update documentation in both the current and legacy systems, you'll need two separate PRs. Refer to [Updating docs in both systems](./legacy-docs.md#updating-docs-in-both-systems).
+If you need to update documentation in both the current and legacy systems, you'll need two separate PRs. Refer to [Updating docs in both systems](legacy-docs.md#updating-docs-in-both-systems).
 :::
 
+## Report issues or request features
+
+|Issue type|Where to report|
+|----|----|
+|Documentation|- [Open a docs issue](https://github.com/elastic/docs-content/issues/new?template=internal-request.yaml) or [fix it yourself](locally.md) <br> - Elastic employees can use the [internal repo](https://github.com/elastic/docs-content-internal/issues/new/choose)|
+|`docs-builder`|- [Bug report](https://github.com/elastic/docs-builder/issues/new?template=bug-report.yaml) <br> - [Discussion](https://github.com/elastic/docs-builder/discussions)|
+
 ## Contribute to legacy docs
 
 |System|What it covers|Published at|Format/toolchain|How to contribute

contribute-docs/index.md

@@ -1,6 +1,5 @@
 toc:
   - file: index.md
-  - file: contribute-index.md
   - file: on-the-web.md
   - file: locally.md
   - folder: syntax