feat: add scientific subtitle review workflow

skills/materialsub/scripts/verify_delivery.py

@@ -177,6 +177,42 @@ def assess_delivery(download_manifest: Path) -> dict[str, Any]:
             "missing": missing_batches,
         }
 
+    execution = download.get("execution")
+    scientific_review_required = (
+        isinstance(execution, dict)
+        and execution.get("scientific_review_required") is True
+    )
+    scientific_review_report_path = subtitle_dir / "scientific-review" / "report.json"
+    scientific_review: dict[str, Any] | None = None
+    if scientific_review_required:
+        reviewed_translations = (
+            subtitle_dir
+            / "scientific-review"
+            / "reviewed-translations"
+            / "translations.json"
+        )
+        missing_review = [
+            str(path)
+            for path in (scientific_review_report_path, reviewed_translations)
+            if not path.is_file()
+        ]
+        if missing_review:
+            return {
+                "complete": False,
+                "stage": "scientific_review_required",
+                "job_dir": str(job_dir),
+                "missing": missing_review,
+            }
+        scientific_review = _read_json(scientific_review_report_path)
+        if scientific_review.get("status") != "complete":
+            raise DeliveryError("scientific review report is incomplete")
+        if scientific_review.get("human_expert_reviewed") is not False:
+            raise DeliveryError("scientific review report makes an invalid human-review claim")
+        if scientific_review.get("subtitle_manifest_sha256") != _sha256_file(
+            subtitle_manifest_path
+        ):
+            raise DeliveryError("scientific review report is bound to a different subtitle manifest")
+
     rendered_dir = subtitle_dir / "rendered"
     required_rendered = [rendered_dir / "bilingual.ass", rendered_dir / "validation.json"]
     missing_rendered = [str(path) for path in required_rendered if not path.is_file()]
@@ -187,6 +223,13 @@ def assess_delivery(download_manifest: Path) -> dict[str, Any]:
             "job_dir": str(job_dir),
             "missing": missing_rendered,
         }
+    if scientific_review_required:
+        validation = _read_json(rendered_dir / "validation.json")
+        binding = validation.get("scientific_review")
+        if validation.get("translation_quality_reviewed") is not True or not isinstance(binding, dict):
+            raise DeliveryError("rendered subtitles did not use the scientific-review gate")
+        if binding.get("report_sha256") != _sha256_file(scientific_review_report_path):
+            raise DeliveryError("rendered subtitles use a stale scientific review report")
     if deliverable == "bilingual-subs":
         return complete("bilingual_subs_complete", rendered_dir=str(rendered_dir))