* fix: bound paginated session tails by visible messages
* fix(#4070): always merge state.db tail rows (drop the stale-tail timestamp shortcut)
Deep-review finding: the sidecar-only timestamp shortcut returned the sidecar
verbatim whenever state.db had no strictly-newer rows, but a state.db row
at-or-before the sidecar's newest timestamp (recovery / edited-in-place /
missing-timestamp) is still absent from the sidecar -> the paginated tail
diverged from the full merge path (empirically 3/6 adversarial cases). Always
run the cheap in-memory append-only merge; the real latency win (skipping the
lineage-parent DISK load) is preserved.
Co-authored-by: t3chn0pr13st <t3chn0pr13st@users.noreply.github.com>
* fix(#4070): keep matching trailing tool-result row in paginated window
Codex ship-gate finding: _message_window_for_display pulled end_idx back to the
last renderable (user/assistant) row, dropping a trailing role:tool result row
even when it's the result of the newest assistant tool-call. The renderer
rebuilds tool cards from these rows (CLI-origin / empty S.toolCalls path,
static/ui.js resultsByTid), so the card lost its result snippet. Now extend
end_idx forward through trailing tool rows whose tool_call_id matches a tool-call
present in the window; orphan trailing tool rows (no match) are still skipped to
preserve the visible-row budget. +2 regression tests.
Co-authored-by: t3chn0pr13st <t3chn0pr13st@users.noreply.github.com>
* chore(#4070): remove now-dead _max_message_timestamp + its import
Opus gate nit: _max_message_timestamp was only called by the removed
sidecar-timestamp shortcut, and the _message_timestamp_as_float import existed
solely to feed it. Both removed; _message_timestamp_as_float still lives in
api/models.py for its real callers.
* chore: add #4069 CHANGELOG entry (visible-message tail pagination)
* chore(release): stamp v0.51.424 (Release OK) for #4069
---------
Co-authored-by: t3chn0pr13st <technopriest@live.ru>
Co-authored-by: nesquena-hermes <agent@nesquena-hermes>
Co-authored-by: t3chn0pr13st <t3chn0pr13st@users.noreply.github.com>
