Report committed comparison cleanup failures

docs/cli.md

@@ -142,6 +142,11 @@ top-level error; it does not expose provider diagnostics. See the
 [comparison bundle contract](integrations/comparison-bundle.md) for durable
 artifact fields and failure invariants.
 
+If the bundle is published but cleanup of its replaced prior bundle fails, the
+summary still includes the published artifact paths and has status `failed`.
+Its JSON error remains generic; the returned command error identifies the
+retained backup path for operator recovery.
+
 ## Flag Reference
 
 | Flag | Accepted by | Meaning |