Create Development guide as a primary navigation item and entry point

docs/development-guide/index.md

@@ -0,0 +1,83 @@
+---
+myst:
+  html_meta:
+    "description": "Development guide for Plone 6"
+    "property=og:description": "Development guide for Plone 6"
+    "property=og:title": "Development guide for Plone 6"
+    "keywords": "Plone, development, guide, tests, Volto, frontend, REST API, plone.api, backend"
+---
+
+(development-guide-label)=
+
+# Development guide
+
+This part of Plone 6 documentation provides guidance for the development of Plone.
+
+Development of Plone uses both the Python and JavaScript ecosystems.
+
+-   Volto, the default frontend for Plone 6, is based on the React JavaScript framework.
+-   Classic UI, the legacy frontend in Plone 6 and earlier versions, is based on the Twitter Bootstrap 5 framework and other JavaScript tools.
+-   The backend consists of dozens of Python packages.
+    Plone REST API and `plone.api` are two of the more prominent Python packages in the Plone backend.
+
+Each frontend and backend package may have its own specific development methods.
+This development guide points you, as a developer, to the appropriate resource.
+
+
+## Tests
+
+Tests ensure that your project functions as expected, and that changes to the code base during development don't break anything.
+
+
+
+### Volto
+
+```{note}
+Frontend testing for Plone 6 is in the process of being written using Cookieplone and pytest.
+Until it is complete, you can refer to the following guides and use tests in Volto core and add-ons for examples.
+```
+
+-   {doc}`Volto acceptance tests </volto/contributing/acceptance-tests>`
+-   {doc}`Volto unit tests </volto/contributing/testing>`
+-   {ref}`testing-the-add-on-label`
+
+
+### Backend
+
+```{note}
+Backend testing for Plone 6 is in the process of being written using Cookieplone and pytest.
+Until it is complete, Plone 5 documentation is the authoritative source for writing tests for the Plone backend.
+```
+
+-   {doc}`Backend tests <plone5:develop/testing/index>` (Plone 5)
+
+
+## {term}`ZCA`
+
+{doc}`plone5:develop/addons/components/index` (Plone 5)
+
+
+## {term}`ZCML`
+
+{doc}`plone5:develop/addons/components/zcml` (Plone 5)
+
+
+## GenericSetup
+
+{doc}`plone5:develop/addons/components/genericsetup` (Plone 5)
+
+
+## Content type schemas
+
+-   {doc}`/backend/content-types/index`
+-   {doc}`plone5:develop/plone/content/index` (Plone 5)
+
+
+## Register views
+
+{doc}`plone5:develop/plone/views/index` (Plone 5)
+
+
+## Register API services
+
+{doc}`backend/configuration-registry`

docs/index.md

@@ -32,6 +32,7 @@ Read the [documentation for the previous version, Plone 5](https://5.docs.plone.
 
 overview/index
 install/index
+development-guide/index
 manage/index
 upgrade/index
 deployment/index