docs(changelog): #7758

CHANGELOG.md

@@ -24,6 +24,12 @@
 
 ### Fixed
 
+- **A burst of "session busy" refusals no longer drops a background-task completion.** When
+  `start_session_turn()` refused a completion wake-up with a transient 409 (Agent runtime stale,
+  process wake-ups paused, or the session busy with another turn), the bridge released the durable
+  claim as a plain failure, so a few refusals in a row could terminally drop a completion whose
+  session was alive and waiting. Transient refusals now return the claim as retryable, while hard
+  failures still use up the attempt budget. (#7758 by @ruizanthony)
 - **`MEDIA:` links wrapped in inline code no longer 404.** Every `MEDIA:` capture site (renderer,
   streaming parser, TTS stripper, session-media authorization and snapshot capture, seven in all)
   swallowed the closing backtick of `` `MEDIA:/path` `` into the path, so the file lookup and the