Fixes the #7310 stall class: six frontend recovery paths (offline/bfcache
refreshSession, stream-end settle, cancel sync, /compress preflight, /retry,
/undo) issued bare GET /api/session reads that re-walked, re-redacted and
re-serialized the ENTIRE transcript (4-15s / 28MB on a 5k-row session,
#7625), and the same shape shipped the full session-level tool_calls list
because windowing was gated on msg_limit being present.
Changes:
- Server: add explicit msg_limit=all escape hatch; window session-level
tool_calls by actual truncation (length comparison) instead of the
presence of a limit parameter. The bare no-limit shape keeps its
full-transcript contract (pinned by
test_state_db_reconciliation_preserves_sidecar_order_when_timestamps_collide
and the run-journal snapshot test).
- Client: refreshSession / _restoreSettledSession / cancel sync /
/compress preflight / /retry / /undo now request the bounded tail
(msg_limit=30) and restore the _messages_truncated/_messages_offset paging
gate instead of hardcoding 'not truncated'; jump-to-start
(_ensureAllMessagesLoaded) and outline jump opt in to the full transcript
via msg_limit=all.
Tests: test_session_default_window.py covers helper semantics, per-call-site
bounded/all shapes, truncation-signal restoration, and a regression guard
that no bare GET /api/session fetch remains in static/. 454 related tests
pass; reverse-verified (reverting the fixes turns the tests red).
happy5318
d24d6377f9