Complete run state hardening audit

docs/roadmap/future.md

@@ -41,6 +41,12 @@ future work only.
 - Optional generated example output fixtures with a regeneration procedure.
 - Additional diagnostics or reporting views if operator workflows need them.
 
+## Candidate Developer Work
+
+- Reassess broad CLI and configuration regression coverage, including whether
+  to retain a legacy-checkpoint compatibility fixture and adopt a coverage
+  policy.
+
 ## Candidate Workspace Work
 
 - Default-idempotent run behavior with an explicit force override.