Repair rejected corrections in independent branches

docs/roadmap/implementation.md

@@ -221,6 +221,8 @@ validator responses remains [deferred](future.md#domain-aware-response-recovery)
 
 ## Stage 6 — Run independent repair branches and apply accepted revisions
 
+**Completed.**
+
 1. Extend the section validation worker in `runModulePipeline` after its
    initial pass. Keep the approved candidates as they are. For each candidate
    with an actionable rejection, initialize an independent branch on the