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hermes-webui/tests
nesquena-hermesandRod Boev f4d014194c fix(#4346): virtual-scroll height + measurement scroll-jump cluster (#4367, #4368)
Two coherent fixes for the #4346 transcript-virtualization scroll-jump
cluster, shipped together (contributor-approved) because both touch
static/ui.js + the same virtualization test file and interact (the
cache-reset path uses the per-role default from #4367). Both only run when
the default-OFF experimental "Virtualize long transcripts" setting is on.

#4367 — per-role virtual scroll height estimates:
  Replaces the flat 140px unmeasured-row estimate with per-role fallbacks
  (user 120 / assistant 160 / tool_call 400 / default 140) via
  _messageVirtualDefaultHeightForRole + _messageVirtualRoleForEntry, so
  tool-call rows (which measure 500-2000px) aren't under-counted before
  measurement. Additive + backward-compat (opts.roleForIdx optional → flat
  default when absent). The two sibling offset calculators route through the
  per-role defaults too.

#4368 — anchor-based scroll compensation during measurement:
  Adds _compensateScrollForMeasurementDelta (capture anchor + scrollTop →
  render → re-pin scrollTop by the anchor row's measured delta; null/missing/
  <2px guards; programmatic-scroll flag managed) wrapping
  renderMessages({preserveScroll:true}) in _scheduleMessageVirtualizedRender,
  plus a 150ms scroll-active guard deferring measurement refresh while the user
  scrolls, and session-switch cleanup of the three scroll-settle globals.

Maintainer note: combining the two required the test harness for
test_clear_height_cache_resets_scroll_settle_globals (#4368) to also eval
_messageVirtualDefaultHeightForRole + define MESSAGE_VIRTUAL_DEFAULT_ROW_HEIGHTS
(#4367), since the combined _clearMessageVirtualHeightCache resets the estimate
via the per-role helper. Both PRs' test sets retained.

Co-authored-by: Rod Boev <rod.boev@gmail.com>
2026-06-18 00:50:53 +00:00
..
2026-05-18 16:44:36 +00:00
2026-05-05 01:51:05 +00:00
2026-04-29 21:34:27 -07:00