diff --git a/docs/BUG_HISTORY.md b/docs/BUG_HISTORY.md
index e6630895..974124d3 100644
--- a/docs/BUG_HISTORY.md
+++ b/docs/BUG_HISTORY.md
@@ -7856,3 +7856,19 @@
 - 相关记录：BUG-505
 - 复发自：无
 - 修复版本：待发布
+
+## BUG-510 | 采集阶段盘外核对选择题画出 A–D 却点不了
+
+- 状态：resolved
+- 首次发现：2026-09-03
+- 最近更新：2026-09-03
+- 影响面：`projectRectificationChoiceCard`、GET `/api/rectification/cases/[caseId]` `choice_card`、`rectification-agentic-chat` 内嵌卡
+- 用户现象：助手记下带月份的职场事后，下面出现「某年前后，有没有开始一段认真关系、分手或结婚？」和 A–D，点任何一项都没有反应。`current_question` 已是选择题，`choice_card` 为 null。
+- 触发条件：采集阶段已有带年份事件，下一问是 `intent=out_of_sample_check` 的四点选存在性题；schema 有合法 A–D，但没有 `probe_year`。该回合未调用 `rectification-set-focus`，题目由 idle persist 挂到最后一条助手消息。`selection_allowed` 仍为 false（采用门，不是点选门）。
+- 根因：keep 路径 `forceChoice` 会尝试重铸 `choice_frame`。缺 `probe_year` 时 `hypothesisFor` 没有具体时期，frame 为空，GET 按设计把 `choice_card` 置空。界面仍从 turn 上的 `question.options` 画出 A–D，但 `liveQuestion` 要求 GET 卡与 `focus_id` 一致，`disabled={!liveQuestion}`，`submitChoice` 在没有 `choiceCard` 时直接 return。
+- 修复：`projectRectificationChoiceCard` 在重建 followup 没有 `choice_frame` 时，若当前焦点已是 `reverse_verify` / `out_of_sample_check` 且 schema 能解析出四点选，按已持久化文案投影 `choice_card`。口述采集 schema 仍不发卡。未放宽区分题身份校验，未打开 `selection_allowed`。
+- 验证：`rectification-choice-card` 锁定无 `probe_year` 的盘外存在性卡仍可投影、口述采集盘外题仍不发卡；`rectification-agentic-entry` 锁内嵌卡 `disabled={!liveQuestion}` 且点选要求 GET 卡 `focus_id` 一致。
+- 防复发：GET 已有合法持久化 reverse_verify / out_of_sample_check 四点选 schema 时，不得因重建缺 `choice_frame` 把 `choice_card` 置空。界面画出 A–D 时 GET 必须给出可点的卡。不得把 `selection_allowed` 当成 A–D 点选门。不得从题干正则反推年份。
+- 相关记录：BUG-416、BUG-431、BUG-498
+- 复发自：BUG-431
+- 修复版本：待发布
diff --git a/frontend/src/lib/rectification-agentic/v9/choice-card.ts b/frontend/src/lib/rectification-agentic/v9/choice-card.ts
index 6d5a4848..bb922665 100644
--- a/frontend/src/lib/rectification-agentic/v9/choice-card.ts
+++ b/frontend/src/lib/rectification-agentic/v9/choice-card.ts
@@ -524,6 +524,38 @@ export function mergeChoiceCard(
   };
 }
 
+export function choiceCardFromPersistedVerifyCopy(input: {
+  copy: AgentChoiceCopy;
+  questionId: string;
+  methodId: string;
+  scoring: boolean;
+  probeId: string | null;
+  caseRevision: number | null;
+  focusId: string;
+}): RectificationChoiceCard | null {
+  if (!input.copy.prompt.trim() || !input.questionId.trim()) return null;
+  if (!isPersistedFocusId(input.focusId)) return null;
+  return {
+    question_id: input.questionId,
+    method_id: input.methodId,
+    prompt: input.copy.prompt,
+    why: "",
+    varga: null,
+    choice_mode: CHOICE_MODE,
+    options: input.copy.options.map((option) => ({
+      ...option,
+      role: "primary" as const,
+    })),
+    stop_label: CHOICE_SKIP_QUESTION_LABEL,
+    stop_message: CHOICE_SKIP_QUESTION_MESSAGE,
+    scoring: input.scoring,
+    probe_id: input.probeId,
+    case_revision: input.caseRevision,
+    focus_id: input.focusId,
+    choice_kind: "existence",
+  };
+}
+
 export function isHoldoutVerificationQuote(quote: string): boolean {
   return quote.includes(HOLDOUT_MESSAGE_PREFIX);
 }
diff --git a/frontend/src/lib/rectification-agentic/v9/interview-state.ts b/frontend/src/lib/rectification-agentic/v9/interview-state.ts
index 4a2ea82b..92596855 100644
--- a/frontend/src/lib/rectification-agentic/v9/interview-state.ts
+++ b/frontend/src/lib/rectification-agentic/v9/interview-state.ts
@@ -1,8 +1,9 @@
 /**
  * Public interview projection for the Case GET payload.
  *
- * The tap card is shown only when the follow-up is a discriminator
- * (candidates already diverge or holdout) and the Agent wrote choice copy.
+ * The tap card is shown when the rebuilt follow-up has a matching
+ * discriminator frame, or when the open focus is already a reverse-verify /
+ * out-of-sample A–D schema (even if the recast has no choice_frame).
  * Card identity is the persisted focus UUID plus the inference revision.
  */
 
diff --git a/frontend/src/lib/rectification-agentic/v9/method-followup.ts b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
index 0ed459e0..5855c822 100644
--- a/frontend/src/lib/rectification-agentic/v9/method-followup.ts
+++ b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
@@ -71,6 +71,7 @@ import {
   parseAgentChoiceCopy,
   preferConcreteChoicePrompt,
   mergeChoiceCard,
+  choiceCardFromPersistedVerifyCopy,
   serverOwnedChoiceCopy,
   type RectificationChoiceCard,
   type RectificationChoiceFrame,
@@ -2194,11 +2195,37 @@ export function projectRectificationChoiceCard(
     ? input.activeFocus.id.trim()
     : "";
   if (!isPersistedFocusId(focusId)) return null;
-  const followup = plan.next_followup ?? plan.deferred_followup ?? null;
-  if (!followup) return null;
-  const frame = followup.choice_frame;
-  if (!frame) return null;
   const schema = input.activeFocus?.expectedAnswerSchema ?? null;
+  const schemaCopy = parseAgentChoiceCopy(schema);
+  const intent = input.activeFocus?.intent ?? "";
+  const verifyOnly = intent === "reverse_verify" || intent === "out_of_sample_check";
+  // Recast can drop choice_frame when the schema has no probe_year. The open
+  // A–D schema is still the live question; GET must not silence it.
+  const persistedVerifyCard = (): RectificationChoiceCard | null => {
+    if (!verifyOnly || !schemaCopy) return null;
+    const parsed = parsePersistedFollowupQuestionId(input.activeFocus?.questionId);
+    const questionId = input.activeFocus?.questionId?.trim() ?? "";
+    const probeId = schema && typeof schema === "object" && typeof (schema as { probe_id?: unknown }).probe_id === "string"
+      ? (schema as { probe_id: string }).probe_id
+      : null;
+    return choiceCardFromPersistedVerifyCopy({
+      copy: {
+        ...schemaCopy,
+        prompt: overlayChoicePromptFromSpoken(schemaCopy.prompt, input.latestAssistantText),
+      },
+      questionId,
+      methodId: parsed?.method_id
+        ?? (intent === "out_of_sample_check" ? "oos_blind" : "reverse_verify"),
+      scoring: parsed?.scoring !== false,
+      probeId,
+      caseRevision: input.caseRevision ?? null,
+      focusId,
+    });
+  };
+  const followup = plan.next_followup ?? plan.deferred_followup ?? null;
+  if (!followup) return persistedVerifyCard();
+  const frame = followup.choice_frame;
+  if (!frame) return persistedVerifyCard();
   const schemaRow = schema && typeof schema === "object" && !Array.isArray(schema)
     ? schema as Record<string, unknown>
     : null;
diff --git a/frontend/tests/rectification-agentic-entry.test.ts b/frontend/tests/rectification-agentic-entry.test.ts
index c1a24c92..8bdf714d 100644
--- a/frontend/tests/rectification-agentic-entry.test.ts
+++ b/frontend/tests/rectification-agentic-entry.test.ts
@@ -593,6 +593,8 @@ test("time-selection cards use server adoption state and stay mutually exclusive
   assert.doesNotMatch(chat, /send\("message", choiceCard\?\.stop_message/);
   assert.doesNotMatch(chat, /choiceCardUserMessage/);
   assert.match(caseRoute, /choice_card: choiceCardFromCaseDossier/);
+  assert.match(chat, /choiceCard\s+&& choiceCard\.focus_id === question\.focus_id/);
+  assert.match(chat, /disabled=\{!liveQuestion\}/);
   assert.match(caseRoute, /current_question: projectCurrentQuestion/);
   assert.match(caseRoute, /overlayPublicDecision/);
   assert.match(caseRoute, /const fields = publicDecisionFields\(decision\)/);
diff --git a/frontend/tests/rectification-choice-card.test.ts b/frontend/tests/rectification-choice-card.test.ts
index 699e431f..81d3bebd 100644
--- a/frontend/tests/rectification-choice-card.test.ts
+++ b/frontend/tests/rectification-choice-card.test.ts
@@ -1524,3 +1524,142 @@ test("GET keeps hiding the card when the persisted split belongs to another prob
   );
   assert.equal(card, null);
 });
+
+test("GET still renders an open out-of-sample existence card without probe_year", () => {
+  const oosCopy = {
+    prompt: "2020 年前后，有没有开始一段认真关系、分手或结婚？",
+    option_a: DYNAMIC_STYLE_OPTIONS[0].label,
+    option_b: DYNAMIC_STYLE_OPTIONS[1].label,
+    option_c: DYNAMIC_STYLE_OPTIONS[2].label,
+    option_d: DYNAMIC_STYLE_OPTIONS[3].label,
+    options: DYNAMIC_STYLE_OPTIONS.map((option, index) => ({
+      key: (["A", "B", "C", "D"] as const)[index]!,
+      label: option.label,
+      answer_class: option.answer_class,
+    })),
+  };
+  const card = choiceCardFromCaseDossier({
+    evidence: [{
+      id: "ev-education",
+      status: "confirmed",
+      domain: "education",
+      datePrecision: "year",
+      occurredFrom: "2016-01-01",
+      occurredTo: "2016-01-01",
+      eventKind: "education_start",
+      summary: "2016 年开始上大学",
+    }, {
+      id: "ev-career-entry",
+      status: "confirmed",
+      domain: "career",
+      datePrecision: "month",
+      occurredFrom: "2020-04-01",
+      occurredTo: null,
+      eventKind: "career_entry",
+      summary: "2020年4月开始实习",
+    }, {
+      id: "ev-career-exit",
+      status: "confirmed",
+      domain: "career",
+      datePrecision: "month",
+      occurredFrom: "2020-10-01",
+      occurredTo: null,
+      eventKind: "career_exit",
+      summary: "2020年10月实习离职",
+    }],
+    conversationSummary: {
+      activeFocus: {
+        id: FOCUS_ID,
+        questionId: "oos_blind:relationship_style:score",
+        intent: "out_of_sample_check",
+        targetDomain: "relationship",
+        targetKind: null,
+        expectedAnswerSchema: {
+          choice: oosCopy,
+        },
+      },
+      declinedSkippedTopics: [],
+    },
+    latestResult: {
+      resultId: "result-oos-open",
+      selectionAllowed: false,
+      confirmationAllowed: false,
+      candidates: [
+        { time: "05:12", rank: 1, relativeSupport: 15, tiedMinuteCount: 1 },
+        { time: "05:14", rank: 2, relativeSupport: 15, tiedMinuteCount: 1 },
+      ],
+      decisionReceipt: {
+        selection_allowed: false,
+        propose_allowed: false,
+        confirmation_allowed: false,
+        precision_stage: { current: "d9_refine", can_stop: true },
+        discriminating_event_probes: [],
+        oos_blind_prompts: [{
+          domain: "relationship",
+          user_meaning: "校时还没用过感情这条线。有没有一件没提过、但记得大概时间的关系变化？",
+          used_for_scoring: false,
+        }],
+        inference_state: {
+          algorithm_version: "rectification-inference-v1",
+          candidate_set_id: "04:45-05:15:05:12,05:14",
+          revision: 1,
+          phase: "event_collection",
+          result_status: "insufficient_evidence",
+          range_start: "04:45",
+          range_end: "05:15",
+          candidates: [
+            { id: "05:12", time: "05:12", rank: 1, status: "equivalent", prior_score: 15, posterior_score: 15, probability: 0.5, cluster_range: ["05:12", "05:14"], strong_conflict_count: 0 },
+            { id: "05:14", time: "05:14", rank: 2, status: "equivalent", prior_score: 15, posterior_score: 15, probability: 0.5, cluster_range: ["05:12", "05:14"], strong_conflict_count: 0 },
+          ],
+          events: [
+            { id: "ev-education", year: 2016, usage: "training", domain: "education", precision: "year" },
+            { id: "ev-career-entry", year: 2020, usage: "training", domain: "career", precision: "month" },
+            { id: "ev-career-exit", year: 2020, usage: "holdout", domain: "career", precision: "month" },
+          ],
+          probes: [],
+          answered_probes: [],
+          rounds: [],
+          entropy: 1,
+          representative_time: "05:12",
+          credible_range: ["05:12", "05:14"],
+        },
+      },
+    },
+    case: { acceptedTime: null, status: "collecting_evidence" },
+    turns: [{
+      role: "assistant",
+      text: "2020 年 4 月开始实习、同年 10 月离职，两件都记下了。接下来我们继续。",
+    }],
+  });
+  assert.ok(card, "an already-open A–D out-of-sample card must stay tappable");
+  assert.equal(card.focus_id, FOCUS_ID);
+  assert.equal(card.question_id, "oos_blind:relationship_style:score");
+  assert.equal(card.prompt, oosCopy.prompt);
+  assert.equal(card.options.length, 4);
+  assert.equal(card.options[0]?.label, "明确发生且时间吻合");
+  assert.equal(parseRectificationChoiceCard(card)?.focus_id, FOCUS_ID);
+});
+
+test("GET does not mint a tap card from an out-of-sample spoken collect focus", () => {
+  const card = projectRectificationChoiceCard({
+    evidence: [{
+      status: "confirmed",
+      domain: "education",
+      datePrecision: "year",
+      occurredFrom: "2016-01-01",
+      occurredTo: null,
+    }],
+    activeFocus: {
+      id: FOCUS_ID,
+      questionId: "oos_blind:holdout",
+      intent: "out_of_sample_check",
+      targetDomain: "career",
+      targetKind: null,
+      expectedAnswerSchema: {
+        collect: true,
+        prompt: "上大学之外，你还记得第一份正式工作大概是从哪一年开始干的吗？",
+      },
+    },
+  });
+  assert.equal(card, null);
+});