feat(lab): publish E31 through E33 results

src/k1link/compute/e31_source_qualification.py

@@ -142,6 +142,25 @@ class _E30Chain:
     human_decisions: tuple[dict[str, Any], ...]
 
 
+def read_e31_source_qualification(root: Path) -> E31SourceQualification:
+    """Open and fully validate one immutable E31 result."""
+
+    resolved = _safe_result_root(root, _RESULT_ID)
+    manifest = _read_json(resolved / E31_MANIFEST_NAME)
+    identity = _object(manifest.get("identity"), "E31 identity")
+    result = _read_existing(resolved, identity)
+    if (
+        result.report.get("schema_version") != E31_SOURCE_QUALIFICATION_REPORT_SCHEMA
+        or result.report.get("result_id") != resolved.name
+        or result.report.get("authority") != _diagnostic_authority()
+        or result.manifest.get("status") != result.report.get("status")
+        or result.manifest.get("eligible_for_e32")
+        != result.report.get("eligible_for_e32")
+    ):
+        raise E31SourceQualificationError("E31 result report is inconsistent")
+    return result
+
+
 def build_e31_source_qualification(
     *,
     source_pack_root: Path,