Add v12.6 changelog cleanup handover

handover/workpackages/20260607_1458_v12_6_export_sanity_changelog_cleanup.md

@@ -0,0 +1,113 @@
+# Handover — WP3B v12.6 Export sanity changelog cleanup
+
+Repository: solidprivacy-nl/scrub  
+Status: completed; pending GitHub Actions, Hugging Face sync and app verification for latest commits
+
+## Summary
+
+This cleanup continued from the partial WP3B handover.
+
+The previous worker had already completed the v12.6 export sanity UI integration and wrote the handover, but reported that `CHANGELOG.md` had not yet been updated.
+
+This cleanup updated `CHANGELOG.md` only. No UI code was changed.
+
+## Repository worked in
+
+- `solidprivacy-nl/scrub`
+
+## Workpackage title
+
+- `WP3B — v12.6 Export sanity checks UI integration cleanup`
+
+## Status
+
+- Changelog cleanup completed.
+- UI integration remains implemented from earlier WP3B commits.
+- GitHub Actions status for this cleanup commit is pending.
+- Hugging Face sync status for this cleanup commit is pending.
+- App verification remains pending for the visible v12.6 UI behavior.
+
+## Files added
+
+- `handover/workpackages/20260607_1458_v12_6_export_sanity_changelog_cleanup.md`
+
+## Files changed
+
+- `CHANGELOG.md`
+
+## Main changes
+
+`CHANGELOG.md` now includes a dedicated entry:
+
+```text
+v12.6 — Export sanity checks UI integration
+```
+
+It records:
+
+- the UI integration status;
+- changed files from WP3B;
+- `Extra exportcontrole` as the expected UI label;
+- advisory-only warning behavior;
+- no download blocking;
+- no export semantics change;
+- no Scrub Key logic added;
+- pending GitHub Actions, Hugging Face sync and app verification.
+
+The changelog also preserves the helper-only v12.6 entry and records the coordinator-reconciled helper evidence:
+
+```text
+Tests #58 green
+Sync to Hugging Face Space #72 green
+commit b0bf8ae
+```
+
+## Tests
+
+No tests were run in this cleanup step because only `CHANGELOG.md` was changed.
+
+Existing relevant tests from WP3B:
+
+- `tests/test_export_sanity.py`
+- `tests/test_export_sanity_ui_patch.py`
+
+## Validation status
+
+- Documentation cleanup: completed.
+- GitHub Actions: pending for latest cleanup commit.
+- Hugging Face sync: pending for latest cleanup commit.
+- App verification: still required for visible UI behavior.
+
+## GitHub Actions status
+
+Pending / not checked after this cleanup commit.
+
+## Hugging Face sync status
+
+Pending / not checked after this cleanup commit.
+
+## App verification status
+
+Pending.
+
+Coordinator/user should verify in the Hugging Face app that:
+
+```text
+Extra exportcontrole
+```
+
+appears near the final review/download section and that TXT, CSV, DOCX and PDF downloads still work.
+
+## Remaining risks
+
+- WP3B UI behavior still needs visual app verification.
+- Latest Actions/sync still need confirmation.
+- `fix_streamlit_nested_expanders.py` now carries multiple staged UI patches; further UI work must remain sequential.
+- v13 Scrub Key UI should not start until v12.6 is verified/closed.
+
+## Next recommended step
+
+1. Confirm GitHub Actions and Hugging Face sync for the latest commits.
+2. Verify the Hugging Face app shows `Extra exportcontrole` before downloads.
+3. Confirm downloads remain available and unchanged.
+4. Run WP3C — v12.6 Export sanity verification and closeout.