Builds the escalation layer on top of HexLab98's heal-log windowing
(salvaged from PR #96916):
- Per-session heal counters (heal events + messages healed) tracked by the
repair path in agent_runtime_helpers.py, session totals preserved across
10-minute log windows.
- Threshold escalation: after N heals in a session window (default 3,
configurable via agent.sanitizer_heal_escalation_threshold in
config.yaml, 0 = off) log ONE ERROR carrying session id + heal pattern
(events/messages/window/threshold), then stay quiet.
- ONE-TIME out-of-band user notice queued at the threshold and delivered by
the conversation loop through _emit_warning (status callback -> gateway
status message / CLI print). Never injected into conversation context or
the wire copy: prompt caching, role alternation, and durable history are
untouched. Never re-arms on a new window; scoped per session.
- Counters visible in diagnostics: get_sanitizer_heal_stats() rendered in
the /debug share // hermes debug report, and the config key surfaced in
hermes dump overrides. errors.log carries the ERROR line for `hermes logs
errors`.
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