Record the switching and items commit in the session handoff

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/SESSION_HANDOFF.md

@@ -559,7 +559,8 @@ Restore, revives and the stats screen are not ported.
 Checks: 324 unit tests with the local ROM (130 passed, 194 skipped
 without it); 93 Chromium/WebKit browser tests passed, 19 skipped
 intentionally; native and reference builds; reference, release and
-vendor checks; `git diff --check`. Not committed.
+vendor checks; `git diff --check`. Committed and pushed to `main` as
+`f8e0f9c`.
 
 Next (PLAN section 2): controlled-seed comparisons of random-driven
 battle routines. Then PLAN section 3/4 items: the party and bag menus