chore(oas): regenerate swagger for activity_max_size_mb config field

Author: Dumbris

oas/docs.go

@@ -11,6 +11,10 @@ components:
         activity_max_response_size:
           description: 'Response truncation limit in bytes (default: 65536)'
           type: integer
+        activity_max_size_mb:
+          description: 'Max total activity-log size in MB before pruning oldest (default:
+            256, 0=disabled)'
+          type: integer
         activity_retention_days:
           description: Activity logging settings (RFC-003)
           type: integer