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fix: unify summary injection strategy between consolidation paths

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- Track last_summary in maybe_consolidate_by_tokens() to persist the summary
- Change return to break in the consolidation loop to allow summary persistence
- Save summary to session.metadata['_last_summary'] for consistency with AutoCompact._archive()
- Ensures compressed content remains visible to the model via prepare_session() injection

Fixes #3274
This commit is contained in:
Jiajun Xie 2026-04-19 09:54:31 +00:00 committed by Xubin Ren
parent 107eae14d7
commit d95bc9c9c4
1 changed files with 21 additions and 7 deletions
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28
nanobot/agent/memory.py
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@ -499,9 +499,10 @@ class Consolidator:
)
return
last_summary = None
for round_num in range(self._MAX_CONSOLIDATION_ROUNDS):
if estimated <= target:
return
break
boundary = self.pick_consolidation_boundary(session, max(1, estimated - target))
if boundary is None:
@ -510,7 +511,7 @@ class Consolidator:
session.key,
round_num,
)
return
break
end_idx = boundary[0]
end_idx = self._cap_consolidation_boundary(session, end_idx)
@ -520,11 +521,11 @@ class Consolidator:
session.key,
round_num,
)
return
break
chunk = session.messages[session.last_consolidated:end_idx]
if not chunk:
return
break
logger.info(
"Token consolidation round {} for {}: {}/{} via {}, chunk={} msgs",
@ -535,8 +536,11 @@ class Consolidator:
source,
len(chunk),
)
if not await self.archive(chunk):
return
summary = await self.archive(chunk)
if summary:
last_summary = summary
else:
break
session.last_consolidated = end_idx
self.sessions.save(session)
@ -546,7 +550,17 @@ class Consolidator:
logger.exception("Token estimation failed for {}", session.key)
estimated, source = 0, "error"
if estimated <= 0:
return
break
# Persist the last summary to session metadata so it can be injected
# into the runtime context on the next prepare_session() call, aligning
# the summary injection strategy with AutoCompact._archive().
if last_summary and last_summary != "(nothing)":
session.metadata["_last_summary"] = {
"text": last_summary,
"last_active": session.updated_at.isoformat(),
}
self.sessions.save(session)
# ---------------------------------------------------------------------------