Two CI failures on main:
1. File-size guard: lib.rs grew by one line in PR #1246
(show_native_notification added to Tauri command list). Bump the
approved override from 1034 to 1035 and update the comment.
2. Scroll-history regression (scroll-history.spec.ts:1363): when the
user scrolls back past MAX_TIMELINE_MESSAGES (2000) events, a live
subscription event arriving via mergeTimelineCacheMessages triggered
normalizeTimelineMessages, which caps to the newest 2000. This evicted
the backward-paged roots, reset oldestAfterMerge, and stalled
pagination — deepest stalled at ~471 instead of reaching < 50.
Fix: mergeTimelineCacheMessages now checks the content-event count on
the ORIGINAL current array (before dedup+incoming). If the cache is
already in backward-paged state (> MAX_TIMELINE_MESSAGES content
events), it skips the cap and returns sort+dedupe only. The cap still
applies during normal live sessions (cache at or under the limit).
Also exports isTimelineWindowContentEvent and MAX_TIMELINE_MESSAGES
from messageQueryKeys.ts so hooks.ts can reference them directly.
Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>
