Constant MAX_NODE_AGE_MS 

const MAX_NODE_AGE_MS: i64 = _; // 3_600_000i64

Defense-in-depth cap on how long an entry can survive without a fresh push before get() evicts it, regardless of status. The real fix for “an already-resolved node never gets reported” is pushing the resolution back (see agent-document-store.ts’s pushResolvedDockNodes, wired for every known resolution path — streaming AND the SessionEnd/HistoryLoaded/HistoryRestored/ScrubOrphanedInProgress scrub paths). This is the backstop for any path that isn’t one of those (reagentx P1 on PR #2432 flagged the total absence of any bound at all — evict_block existed for whole-block removal but nothing time-based existed per-node). One hour comfortably exceeds any legitimate single tool-call duration.