Record v1 scientific release revision

Public metadata-only update; Parquet data unchanged.

metadata/build_report.json

@@ -1,5 +1,5 @@
 {
-  "candidate_size_bytes": 2208977,
+  "candidate_size_bytes": 2209014,
   "parquet_hashes": {
     "data/pairwise_judgments.parquet": "f193626d89d77c20c81d7cf178aca32f2786e40d86b0e4cba6bd80f8f4cef780",
     "data/provider_diagnostics.parquet": "6cded9ffa44fd4b9b776f8f6aa8a1b92f0660ecb8d562e5e6f60972a6a3c5aa6",
@@ -12,6 +12,7 @@
     "repeated_measurements": 7140,
     "selector_training": 139
   },
+  "scientific_release_revision": "f9317638ca1cc422661f704168335576d36ca995",
   "security_status": "PASS",
   "source_integrity": true
 }