diff --git a/.sdlc/branches/feature/data-models.yaml b/.sdlc/branches/feature/data-models.yaml
index 9e081f9..74af620 100644
--- a/.sdlc/branches/feature/data-models.yaml
+++ b/.sdlc/branches/feature/data-models.yaml
@@ -2,3 +2,5 @@ name: feature/data-models
 feature: data-models
 base_branch: main
 created_at: 2026-02-10T16:50:36.396241426Z
+merged_at: 2026-02-10T16:53:11.958446354Z
+merge_strategy: squash
diff --git a/.sdlc/features/data-models/manifest.yaml b/.sdlc/features/data-models/manifest.yaml
index f0f4d26..adcc5d0 100644
--- a/.sdlc/features/data-models/manifest.yaml
+++ b/.sdlc/features/data-models/manifest.yaml
@@ -2,7 +2,7 @@ slug: data-models
 title: Core Data Models & Persistence
 created: 2026-02-10T16:49:07.055028456Z
 branch: feature/data-models
-phase: merge
+phase: released
 phase_history:
     - phase: draft
       entered: 2026-02-10T16:49:07.055028456Z
@@ -30,6 +30,9 @@ phase_history:
       exited: 2026-02-10T16:53:07.384686748Z
     - phase: merge
       entered: 2026-02-10T16:53:07.384686748Z
+      exited: 2026-02-10T16:53:11.958697897Z
+    - phase: released
+      entered: 2026-02-10T16:53:11.958697897Z
 artifacts:
     audit:
         status: passed
diff --git a/.sdlc/state.yaml b/.sdlc/state.yaml
index 6c7fc4f..8646af9 100644
--- a/.sdlc/state.yaml
+++ b/.sdlc/state.yaml
@@ -10,8 +10,8 @@ active_work:
           branch: feature/task-management-ui
           phase: ready
 blocked: []
-last_updated: 2026-02-10T16:50:37.115541262Z
-last_action: CREATE_BRANCH
+last_updated: 2026-02-10T16:53:11.959763813Z
+last_action: MERGE_FEATURE
 last_actor: cli
 history:
     - timestamp: 2026-02-10T16:49:07.055427357Z
@@ -69,3 +69,8 @@ history:
       feature: data-models
       actor: cli
       result: success
+    - timestamp: 2026-02-10T16:53:11.959758423Z
+      action: MERGE_FEATURE
+      feature: data-models
+      actor: cli
+      result: success