Block publish when LLM rewrite quality degrades

ai_daily_report/pipeline.py

@@ -158,6 +158,13 @@ def run_stage0_to_stage7(
         guide_llm_call=guide_llm_call,
     )
     markdown, stage7_report = assemble_markdown(stage6_result["items"], stage6_result["guide"])
+    upstream_blocking_errors: list[str] = []
+    for stage_name in ("stage3", "stage4", "stage5", "stage6"):
+        for error in stage6_result["reports"].get(stage_name, {}).get("blocking_errors", []) or []:
+            upstream_blocking_errors.append(str(error))
+    if upstream_blocking_errors:
+        existing_errors = list(stage7_report.get("blocking_errors", []) or [])
+        stage7_report["blocking_errors"] = existing_errors + upstream_blocking_errors
     reports = dict(stage6_result["reports"])
     reports["stage7"] = stage7_report
     return {