diff --git a/.story_kit/work/1_upcoming/144_story_add_build_timestamp_and_persist_chat_history_across_rebuilds.md b/.story_kit/work/1_upcoming/144_story_add_build_timestamp_and_persist_chat_history_across_rebuilds.md
index 5d17706..84262dd 100644
--- a/.story_kit/work/1_upcoming/144_story_add_build_timestamp_and_persist_chat_history_across_rebuilds.md
+++ b/.story_kit/work/1_upcoming/144_story_add_build_timestamp_and_persist_chat_history_across_rebuilds.md
@@ -1,16 +1,18 @@
 ---
-name: "Add build timestamp and persist chat history across rebuilds"
+name: "Add build timestamp to frontend UI"
 ---
 
-# Story 144: Add build timestamp and persist chat history across rebuilds
+# Story 144: Add build timestamp to frontend UI
 
 ## User Story
 
-As a ..., I want ..., so that ...
+As a developer, I want to see when the frontend was last built so I can tell whether it includes recent changes.
 
 ## Acceptance Criteria
 
-- [ ] TODO
+- [ ] Inject a `__BUILD_TIME__` compile-time constant via `define` in `frontend/vite.config.ts`
+- [ ] Display the build timestamp somewhere subtle in the UI (e.g. bottom corner, header tooltip, or footer)
+- [ ] Timestamp should be human-readable (e.g. "Built: 2026-02-24 14:30")
 
 ## Out of Scope