Integrate nullable stored-history constructor correction

harness/STATE.md

@@ -13,8 +13,13 @@ its cold toolchain/process claims cannot be mistaken for this host's state.
 Its optional history-value constructor cache defect has a follow-up pending.
 No integrated compile/native pass is claimed. Scenario layout follows the merge;
 the checkpoint worker independently restores inline name focus after recovery.
-The user subsequently reauthorized Computer Use explicitly. Root will resume
-native checks against separately staged current binaries after compilation.
+The user subsequently reauthorized Computer Use explicitly. Candidate 2 native
+F2/Save/Undo/Redo now passes the independent exact name-only three-source delta
+and the full Entity Undo oracle. Recovery autofocus is committed in `31b7dc3`;
+its 13 focused tests passed after integrated compilation. The immutable 618-test
+artifact from `057eddd` plus that checkpoint patch is running separately from
+current source edits. The verified follow-up bundle `b6b76ef` now supplies the
+F1 nullable-constructor correction; its additional tests await the next build.
 
 Latest checkpoint (18:10 UTC, Codex-9e8r6t): palette compile repairs, bounded
 inline naming, stale-submit retention and focused first-Escape cancellation are