diff --git a/backlog/tasks/task-251 - Docs-add-subtitle-sidebar-and-Jimaku-integration-pages.md b/backlog/tasks/task-251 - Docs-add-subtitle-sidebar-and-Jimaku-integration-pages.md
index 42d809f..8ec8e00 100644
--- a/backlog/tasks/task-251 - Docs-add-subtitle-sidebar-and-Jimaku-integration-pages.md	
+++ b/backlog/tasks/task-251 - Docs-add-subtitle-sidebar-and-Jimaku-integration-pages.md	
@@ -1,9 +1,10 @@
 ---
 id: TASK-251
 title: 'Docs: add subtitle sidebar and Jimaku integration pages'
-status: In Progress
+status: Done
 assignee: []
 created_date: '2026-03-29 22:36'
+updated_date: '2026-03-29 22:38'
 labels:
   - docs
 dependencies: []
@@ -18,8 +19,14 @@ Track the docs-site update that adds a dedicated subtitle sidebar page, links Ji
 
 ## Acceptance Criteria
 <!-- AC:BEGIN -->
-- [ ] #1 docs-site nav includes a Subtitle Sidebar entry
-- [ ] #2 Subtitle Sidebar page documents layout, shortcut, and config options
-- [ ] #3 Jimaku integration page and configuration docs link to the new docs page
-- [ ] #4 Changelog fragment exists for the user-visible docs release note
+- [x] #1 docs-site nav includes a Subtitle Sidebar entry
+- [x] #2 Subtitle Sidebar page documents layout, shortcut, and config options
+- [x] #3 Jimaku integration page and configuration docs link to the new docs page
+- [x] #4 Changelog fragment exists for the user-visible docs release note
 <!-- AC:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+Added the subtitle sidebar docs page and nav entry, linked Jimaku integration from the homepage/config docs, refreshed docs-site styling tokens, and recorded the release note fragment. Verified with `bun run changelog:lint`, `bun run docs:test`, `bun run docs:build`, and `bun run build`. Full repo test gate still has pre-existing failures in `bun run test:fast` and `bun run test:env` unrelated to these docs changes.
+<!-- SECTION:FINAL_SUMMARY:END -->