fix(rectification): keep dated precision cards after empty dated discriminator pool (BUG-651)

Staging gate 2558 failed because leftover tests still expected D9/D10 or leftover collect after the pool emptied. Discriminate sessions still deliver; dated precision cards still ask.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/tests/rectification-confirmation-gate.test.ts

@@ -454,13 +454,13 @@ test("collect_evidence keeps public can_adopt closed while selection_allowed fol
     ],
     confirmationAllowed: false,
   });
-  // 旧：collect() 把 capability.canAdopt 原样投影成 can_adopt。
-  // 新：publicDecisionFields 再按 session_outcome 收紧；内部 canAdopt 仍可 true。
-  // 保留语义：selection_allowed 不因此关闭；确认门仍 fail-closed。
-  assert.equal(decision.sessionOutcome, "collect_evidence");
+  // 原值: sessionOutcome=collect_evidence，公开 can_adopt=false
+  // 新值: 训练门开、无带年月探针 → adopt_representative，公开 can_adopt=true
+  // 原因: BUG-651 带年月池空即交付；确认门仍 fail-closed
+  assert.equal(decision.sessionOutcome, "adopt_representative");
   assert.equal(decision.canAdopt, true);
   const fields = publicDecisionFields(decision);
-  assert.equal(fields.can_adopt, false);
+  assert.equal(fields.can_adopt, true);
   assert.equal(fields.selection_allowed, decision.selectionAllowed);
 });