Document the post-nudge stall grace in the changelog

Author: TheGreatAxios

CHANGELOG.md

@@ -13,6 +13,12 @@ parallel copies under `docs/` or `scripts/notes/`. At cut time: rename
 
 ## [Unreleased]
 
+### Fixed
+
+- A stalled worker now gets a full `stallTimeoutMs` grace after the first
+  continuation nudge before salvage — stall pings queued inside that window
+  wait instead of counting toward escalation.
+
 ## [0.3.20] - 2026-09-10
 
 ### Added