docs: extend Epic 3 remediation stories

_bmad-output/implementation-artifacts/sprint-status.yaml

@@ -29,7 +29,7 @@
 # - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)
 # - Retrospective appends its action items to action_items; the status view surfaces open ones
 generated: 08-14-2026 00:00
-last_updated: 08-20-2026 09:05
+last_updated: 08-20-2026 12:18
 project: wow20
 project_key: NOKEY
 tracking_system: file-system
@@ -58,7 +58,12 @@ development_status:
   3-5-leasing-dirty-tree-schutz-für-konkurrierende-producer-umsetz: done
   3-6-lease-staleness-recovery-basis-absichern: done
   3-7-reason-mutate-trennung-und-konsistenz-endzustand-sicherstell: done
-  3-8-determinismus-vertrag-ad-17h-als-agent-instruktions-validato: review
+  3-8-determinismus-vertrag-ad-17h-als-agent-instruktions-validato: in-progress
+  3-9-deterministische-relevanz-und-reconcile-routing-schliessen: backlog
+  3-10-inkrementelle-update-und-synthese-erhaltung-absichern: backlog
+  3-11-root-scope-leasing-atomar-akquirieren: backlog
+  3-12-lease-lifecycle-und-commit-abschluss-transaktional-schliessen: backlog
+  3-13-epic-3-verifikations-und-abnahmegate: backlog
   epic-3-retrospective: optional
 
   epic-4: backlog