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-eight-method.test.ts

@@ -2053,35 +2053,31 @@ test("D9/D10 contrast after occupation coverage asks a discriminator, not adopt"
       }],
     },
   });
-  assert.equal(plan.next_followup?.intent, "distinguish_candidates");
-  assert.match(plan.next_followup?.user_prompt_hint ?? "", /职业前事|事业盘/);
-  assert.equal(conversationalSessionOutcome({
+  // 原值: 职业覆盖后仍问 D10 性格对照
+  // 新值: 性格题 deferred，不再作为淘汰区分题
+  // 原因: BUG-651
+  assert.notEqual(plan.next_followup?.choice_kind, "varga_style");
+  assert.notEqual(plan.next_followup?.intent, "distinguish_candidates");
+  const outcome = conversationalSessionOutcome({
     selectionAllowed: true,
     proposeAllowed: true,
     confirmationAllowed: false,
     nextFollowup: plan.next_followup,
     methods: plan.methods,
-    discriminatorProbe: {
-      probeId: "contrast:varga.d10",
-      candidateSetVersion: "05:00-05:02",
-      question: "核对一段还没用进评分的职业前事",
-      expectedOutcomes: [
-        { outcomeId: "a", supportsCandidateIds: ["05:00"], conflictsCandidateIds: ["05:01"] },
-        { outcomeId: "b", supportsCandidateIds: ["05:01"], conflictsCandidateIds: ["05:00"] },
-      ],
-      candidateSplitHash: "varga.d10",
-      informationGain: 0.12,
-      sourceFeatures: [{ technique: "D10", calculationResultId: RESULT_ID }],
-      domain: "career",
-      year: null,
-      semanticKey: "varga.d10",
-    },
+    discriminatorProbe: null,
     candidateScores: [
       { time: "05:00", score: 34 },
       { time: "05:01", score: 33 },
       { time: "05:02", score: 33 },
     ],
-  }), "discriminate_candidates");
+  });
+  // 原值: discriminate_candidates（把 D10 性格题当区分探针）
+  // 新值: 无带年月探针即交付
+  // 原因: BUG-651
+  assert.ok(
+    outcome === "adopt_representative" || outcome === "provisional_range",
+    outcome,
+  );
 });
 
 test("answered duty language skips window D10 and does not re-ask covered education from a yearless D24 card", () => {
@@ -2781,7 +2777,18 @@ test("same-year existence probes are skipped; a different-year dasha still ranks
     },
     candidatesSeparated: false,
   });
-  assert.equal(d24Wins.next_followup?.semantic_key, d10.semanticKey);
+  assert.notEqual(d24Wins.next_followup?.semantic_key, d10.semanticKey);
+  assert.notEqual(d24Wins.next_followup?.choice_kind, "varga_style");
+  // 原值: D10 增益更高时压过 D24 成为 next
+  // 新值: D10 性格题 deferred，不得挡在带年月题或交付前面
+  // 原因: BUG-651
+  assert.equal(
+    d24Wins.dropped_probes.some((item) => (
+      item.semantic_key === d10.semanticKey && item.reason === "yearless_deferred"
+    )),
+    true,
+    JSON.stringify(d24Wins.dropped_probes),
+  );
 });
 
 test("three dated events with one holdout keep collecting instead of discriminating", () => {