chore(eval): chair review — rename code-named record + refresh gold-set

Chair review of the FU-5 gold-set surfaced one internal_committee record whose
case_name was a code ("ARAR-24-9002") rather than a real name. Per the chair's
citation (ערר 9002/24 קרקעות ירושלים 2 בע"מ נ' הוועדה המקומית ירושלים, נבו
13.8.2025, a s.197 compensation appeal), case_name corrected in the DB to
"קרקעות ירושלים 2" (case_number 9002-24 and citation_formatted were already
correct; only 1 such code-named record exists corpus-wide). Re-bootstrapped the
gold-set (the known-item query is now the real name) and refreshed baseline
(aggregate unchanged — the case retrieves identically under the corrected name).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

data/eval/baseline.json

@@ -66,5 +66,5 @@
       "MRR": 0.8346
     }
   },
-  "generated_at": "20260531T145742Z"
+  "generated_at": "20260531T154736Z"
 }