2 commits

Author	SHA1	Message	Date
oskar	9e7ed3e077	feat(observer): persist SHADOW_LIVENESS_MISMATCH to mounted file — survives container recreate (cutover evidence) ... Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-15 15:30:44 +02:00
Oskar Kapala	e5ecefe2b7	feat(observer): shadow-read Prometheus up{} liveness with mismatch logging (cutover etap 1, no switching) ... Observer now optionally (PROM_SHADOW_URL) queries Prometheus up{} once per cycle and LOGS SHADOW_LIVENESS_MISMATCH when its event-driven liveness disagrees. Parallel-run only: compute_liveness and _emit_node_transition are untouched; authoritative liveness stays 100% event-driven. Fail-open on any Prometheus error (down/timeout/bad JSON -> {}). 9 new tests, incl. proof that shadow-read does not change node_info liveness/status. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-07-09 15:38:20 +02:00