Add bulk recipient activation controls

docs/CAMPAIGN_HANDBOOK.md

@@ -454,6 +454,15 @@ Breaking payload or ownership changes require an interface-version bump and a
 release-composition alignment gate. Optional absence must be tested physically,
 not only hidden in navigation.
 
+### Bulk recipient activation
+
+Recipient data can activate all currently inactive rows or deactivate all
+currently active rows. The action displays the exact affected count and
+requires confirmation. It changes only the local Campaign draft until the
+operator saves. Saving follows the ordinary versioned Campaign update path, so
+the resulting recipient state is retained in version and protocol evidence and
+any stale validation, build, or review evidence is invalidated.
+
 ### Reusable Distribution Lists
 
 When Distribution Lists is available, Recipient data offers a separate import