fat: edit template integration

Author: ChengShi-1

CHANGELOG.md

@@ -8,12 +8,19 @@ This changelog follows the principles of [Keep a Changelog](https://keepachangel
 
 ### Added
 
+- Edit Dataset Template Integration: "Edit Template" dropdown on the Dataset Templates listing now opens the Metadata or Terms editor and shows a "Template updated" toast on return.
+
 ### Changed
 
 ### Fixed
 
+- After saving on either Edit Template tab (Metadata or Terms), the user is redirected to the templates listing with a success toast instead of staying on the edit page.
+- Edit Template breadcrumb on the Terms page no longer renders the dataset's "Terms and Guestbook" label (templates have no guestbook).
+
 ### Removed
 
+- Standalone `EditTemplateMetadataFactory` and `EditTemplateTermsFactory` route factories — replaced by a single `EditTemplateFactory` dispatcher that selects the right page based on `editMode`.
+
 ---
 
 ## [v0.3.0] -- 2026-04-24