Add change request builder and validated local output publication

src/viano_bug_analysis/case/assembler.py

@@ -84,6 +84,16 @@ class CaseAssembler:
         prior_refs = []
         for _, checkpoint in reversed(chain):
             details = checkpoint["details"]
+            if details.get("operation") in {"change-request-start", "change-request-complete", "change-request-rejected", "output-validated"}:
+                fields = ("context_ref", "decision_ref", "change_request_ref", "summary_ref", "failure_ref", "error_ref", "validation_ref")
+                for field in fields:
+                    ref = details.get(field)
+                    if ref is None:
+                        continue
+                    if not isinstance(ref, str) or not ref.startswith(("analysis/change-requests/", "handoffs/coding/", "analysis/output/")):
+                        raise CaseBuildError("PREVIOUS_CASE", "Invalid output artifact checkpoint")
+                    require_file(reader, ref)
+                    excluded.add(ref)
             if details.get("operation") in {"diagnosis-start", "diagnosis-complete", "diagnosis-rejected"}:
                 for field in ("context_ref", "diagnosis_ref", "summary_ref", "failure_ref", "error_ref"):
                     ref = details.get(field)