🔖 release: v6.5.2

Automated release commit. Compiles changelog.d/ fragments and moves
the CHANGELOG.md Unreleased section into a dated v6.5.2 entry.
See src/docs/releases.md.

Signed-off-by: hive-release-bot <actions@github.com>

Author: actions-user

CHANGELOG.md

@@ -11,6 +11,12 @@ Hive did not historically maintain a complete changelog. This file starts a prag
 
 ## Unreleased
 
+## 2026-11-09 (v6.5.2)
+
+### Fixed
+
+- Contributor-first lanes are no longer left unworked by a relay that is busy on another hive. A relay subscribed to several hives works one task at a time, and while that task belonged to another hive it still looked to this one like a connected relay holding its role, so the governor kept the resident agent's kicks withheld while nobody worked the lane (seen on 2026-11-09: a relay set "Acting as: scanner" on one hive worked another hive's tasks for seven minutes and sent the first hive no request for work). Relays now tell every other hive that advertises the new `busy_elsewhere_v1` capability when they start and finish another hive's task, and the hub leaves such a relay out of coverage until the task ends or the relay asks it for work again. The frame names no hive, repository or issue. Older relays and older hubs behave as before.
+
 ## 2026-11-09 (v6.5.1)
 
 ### Fixed