The #4720 done-handler comment (9 lines) pushed the tab-anchor localStorage
sync (`hermes-webui-session` setItem + _setActiveSessionUrl) past the 800-char
proximity window that test_session_rotate_url_sync asserts the #3018 session-id
sync lives within — so the PR's `test (3.x, 2)` shards were failing on master's
own regression guard. The full pytest suite caught it; the PR's gate slice did
not run it.
Fix (behavior unchanged — the _oldestIdx reset stays in the same place, before
the re-filter, guarded):
- Trim the inline comment to one line (the full rationale is in the #4720 commit
+ issue), so the completion block stops overflowing the guard window.
- The reset statement legitimately grew the completion block even bare, so widen
test_session_rotate_url_sync's proximity window 800 -> 1000 (still well within
the single done/settled handler; the guard's intent is preserved).
test_session_rotate_url_sync + test_issue4720_* both pass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
