Teknium
52f359a011
fix(sessions): Desktop resume of a heavily-compacted chat no longer fails with 4130
...
Desktop's cold resume (defer_history + omit_messages, transcript paged over
REST) only ever holds the live tip segment in memory, but session.resume
bounded it against the FULL compression lineage (sessions.max_resume_messages,
default 20000). A Bot Chat with 85 compaction segments / ~29k lineage rows
behind a ~700-row tip was refused at 20001, sent zero model prompts, and sat on
"Waking up default…" forever — the healthiest possible session shape, rejected
by a guard sized for in-memory materialization.
- hermes_state: one `_resume_lineage_ids` definition shared by the resume
readers (get_resume_conversations, get_ancestor_display_prefix) and the
guard (assert_resume_safe / get_resume_message_count). Guard grows
`tip_only=` and names the scope it counted; the branch-aware lineage the
readers already used is now what the guard counts too (a /branch copy was
being counted against its parent's rows).
- tui_gateway session.resume: deferred, omit_messages and lazy resumes are
bounded by the tip; only the full in-memory lineage resume keeps the
lineage-wide bound. Deferred hydration falls back to tip-only history when
the lineage exceeds the limit instead of loading the rows the guard refused.
- CLI mid-setup tip-only path routes through the same guard instead of
borrowing assert_export_safe.
- docs: sessions.max_resume_messages / max_export_messages documented with the
per-surface scope.
Live repro (real SessionDB fixture, 85 segments / 29,226 lineage rows / 666 tip
rows, real tui_gateway.server.handle_request): before — deferred resume ->
4130; after — ok, hydrated history=666 prefix=0; the non-deferred full resume
still returns 4130 on the same fixture.
2026-09-01 22:14:33 -07:00
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