Workers running slow models (e.g. kimi-k2.6) can spend longer than
DEFAULT_CLAIM_TTL_SECONDS inside a single tool-free LLM call, making
no tool calls and therefore not heartbeating. release_stale_claims
previously reclaimed these healthy workers, producing the
spawn-then-immediately-reclaim loop reported in #23025.
When a stale-by-TTL claim's host-local worker PID is still alive,
extend the claim (emit a claim_extended event) rather than killing
it. enforce_max_runtime / detect_crashed_workers remain the upper
bounds for genuinely wedged or dead workers. Reclaim events now also
record claim_expires, last_heartbeat_at, worker_pid, and host_local
so operators can see why a worker was killed.
konsisumer
88588b6159