docs: add development section on action menus

frontend/docs/docs/develop/design-actions-dropdown.md

@@ -0,0 +1,21 @@
+# Actions Dropdowns
+
+While controls are always placed next to the most relevant content area, we expose most controls for an object in an _Actions_ dropdown menu to enable discovery of actions in a single place, and allow power-users to quickly accomplish tasks.
+
+## Implementation
+
+Actions dropdowns should generally contain a consistent set of actions for a given object. Whereas `---` symbolizes a horizontal separator, these actions should be ordered as follows:
+
+```txt
+Actions related only to the current page (eg: remove archived item from collection)
+---
+Actions related to editing the object (eg: edit workflow config, edit item metadata)
+Other actions related to the current object (eg: run crawl)
+---
+Actions related to exporting/downloading (eg: download archived item)
+---
+Copy information to clipboard (eg: copy share link)
+Copy IDs to clipboard (eg: copy item ID)
+---
+Destructive actions (eg: delete item)
+```

frontend/docs/mkdocs.yml

@@ -91,6 +91,8 @@ nav:
       - develop/frontend-dev.md
       - develop/localization.md
       - develop/docs.md
+      - Design:
+        - develop/design-actions-dropdown.md
 
   - API Reference: !ENV [ API_DOCS_URL, "/api/" ]