Two defects in _normalize_empty_agent_response surfaced together during a
state.db lock-contention incident on an enterprise Slack deployment:
- the error lookup used dict.get's default, which an explicit
'error': None value bypasses, rendering 'The request failed: None' /
'unknown error';
- persistence failures fell through to the generic branch, whose 'use
/reset' advice is harmful for this failure mode (destroys conversation
context, fixes nothing).
Persistence-failed turns (failure_reason session_persistence_failed:*,
with a legacy fallback on the error text) now get a dedicated message:
storage was temporarily unavailable, the message was recorded, send it
again — with a disk-specific variant. No /reset suggestion. All other
branches unchanged.
Victor Kyriazakos