diff --git a/docs/development/build_execution_tracker.md b/docs/development/build_execution_tracker.md
index 09bf87d..bff7005 100644
--- a/docs/development/build_execution_tracker.md
+++ b/docs/development/build_execution_tracker.md
@@ -3,7 +3,7 @@
 ## Current status
 
 - main baseline updated through: android-feedback-polish (Stage 6A complete)
-- main baseline commit: merge of `feat/android-feedback-polish` (2026-05-29)
+- main baseline commit: merge of `feat/android-feedback-polish` (2026-05-30)
 - next branch: feat/android-mobile-ux-hardening (Stage 6B)
 - current stage: Stage 6A complete — Stage 6B next
 
diff --git a/docs/development/master_development_brief.md b/docs/development/master_development_brief.md
index 63daad3..9273f1e 100644
--- a/docs/development/master_development_brief.md
+++ b/docs/development/master_development_brief.md
@@ -112,11 +112,13 @@ Rules:
 - `design_system` tests passing
 - `feature_wordpress` tests passing
 - `kell_web` tests passing
+- `kell_mobile` tests passing
 - latest reported count for `core`: `20/20 passed`
 - latest reported count for `design_system`: `41/41 passed`
 - latest reported count for `feature_wordpress`: `294/294 passed`
 - latest reported count for `kell_web`: `24/24 passed`
-- baseline commit: merge of `feat/test-coverage-visibility` (2026-05-22)
+- latest reported count for `kell_mobile`: `14/14 passed`
+- baseline commit: merge of `feat/android-feedback-polish` (2026-05-30)
 
 #### Baseline test coverage (established 2026-05-22)
 
@@ -405,7 +407,7 @@ The following packages exist as scaffolded stubs with no implementation. Each ne
 
 ### ~~6. Build execution tracker synchronization~~ ✅ RESOLVED
 
-> The `build_execution_tracker.md` has been fully updated through Stage 4D. All 10 merged branches are tracked with status, dates, files changed, test counts, and analysis results. Current status correctly reflects Stage 4 complete and next branch as `feat/android-app-shell` (Stage 5A). Updated as part of the Stage 4C/4D merge cycle (2026-05-22).
+> The `build_execution_tracker.md` has been fully updated through Stage 6A. All 13 merged branches are tracked with status, dates, files changed, test counts, and analysis results. Current status correctly reflects Stage 6A complete and next branch as `feat/android-mobile-ux-hardening` (Stage 6B). Last synchronized 2026-05-30.
 
 ### 7. Image and media management