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Catalyst Dev — Change Log
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Version 12.28.0

Jul 09, 2026

Liveness Off Linear

Cross-host dead-host detection now reads from Loki instead of Linear, eliminating the ~120 heartbeat writes per hour that were tripping the rate-limit breaker. Two live-deploy bugs in the initial reader were caught and fixed: stale streams no longer win the newest-host race, and in-flight ticket enrichment now runs as a separate fail-open query. The switch is gated behind CATALYST_LIVENESS_READ_SOURCE=loki — set it on all hosts simultaneously to enable; unset to revert instantly.

PRs

  • dev: CTL-1420 (#17) — move cross-host liveness off Linear → event log + Loki (PR1a: heartbeat carries in-flight tickets) (#2575) (ff99913)
  • dev: CTL-1420 (#17) — read cross-host liveness from Loki + retire the Linear heartbeat publish (PR1b) (#2604) (9924aa2)
  • dev: CTL-1420 (#17) follow-up — loki-liveness reader: newest-across-streams + two-query tickets (#2606) (4aa925b)
  • dev: CTL-1443 follow-up — sync CLI reference for boot-resume-approve (unblocks CI) (#2603) (7d34bd8)
  • dev: CTL-1451 (A4 final widening) — probeBackoff on the recovery-filter + reclaim terminal reads (kills the ADV-1433 read-storm) (#2608) (6d4928f)
  • dev: CTL-1452 — parity test exempts action:skip STALL_CATEGORY_MAP entries (restores exec-core CI on main) (#2610) (6e550ba)