diff --git a/contracts/probe-question-v1.json b/contracts/probe-question-v1.json
new file mode 100644
index 00000000..0b52a35d
--- /dev/null
+++ b/contracts/probe-question-v1.json
@@ -0,0 +1,64 @@
+{
+  "version": "probe-question-v1",
+  "answer_classes": [
+    "yes",
+    "weak_yes",
+    "no",
+    "unsure"
+  ],
+  "label_min": 4,
+  "label_max": 80,
+  "forbidden_copy_tokens": [
+    "外貌",
+    "体质",
+    "胎记",
+    "疤痕",
+    "伤疤",
+    "身高",
+    "体型"
+  ],
+  "existence_style_options": [
+    {
+      "label": "明确发生且时间吻合",
+      "answer_class": "yes"
+    },
+    {
+      "label": "发生过但程度较弱",
+      "answer_class": "weak_yes"
+    },
+    {
+      "label": "明确没有发生",
+      "answer_class": "no"
+    },
+    {
+      "label": "这段记不清楚",
+      "answer_class": "unsure"
+    }
+  ],
+  "quality_style_options": [
+    {
+      "label": "发挥明显失常或压力很大",
+      "answer_class": "yes"
+    },
+    {
+      "label": "有压力但不算明显失常",
+      "answer_class": "weak_yes"
+    },
+    {
+      "label": "发挥正常、没有明显失常",
+      "answer_class": "no"
+    },
+    {
+      "label": "这段记不清楚",
+      "answer_class": "unsure"
+    }
+  ],
+  "varga_none_style_option": {
+    "label": "都不是这些特质",
+    "answer_class": "no"
+  },
+  "unsure_style_option": {
+    "label": "这段记不清楚",
+    "answer_class": "unsure"
+  }
+}
diff --git a/docs/BUG_HISTORY.md b/docs/BUG_HISTORY.md
index ce10d82f..4e516782 100644
--- a/docs/BUG_HISTORY.md
+++ b/docs/BUG_HISTORY.md
@@ -6397,6 +6397,22 @@
 - 复发自：无
 - 修复版本：待发布
 
+## BUG-422 | 丢题不可见、契约无 golden、工具表与提示词重复
+
+- 状态：resolved
+- 首次发现：2026-08-28
+- 最近更新：2026-08-28
+- 影响面：`completeStyleOptions` / `isRenderableProbe`、GET `current_question`、Mastra Agent 工具表、`contracts/probe-question-v1.json`
+- 用户现象：区分探针因外貌词、标签不足或无法渲染被静默丢掉，界面和工具投影都看不到原因。选择题 schema 坏了时 `current_question` 变成 `null`，模型继续自拟题。采集阶段的提示词重复 Skill 里已有的外貌/财务禁令和工具调用表。
+- 触发条件：varga 风格标签含禁词或不足两项；已持久化 Focus 的 choice schema 缺四选项；`proposeAllowed` 为 false 时模型仍看到 `offer-candidates`。
+- 根因：选项补全和可渲染检查只返回成功数组或 `null`，没有 `reason`。读路径把坏 schema 当成「没有题」。Agent 工具表不看 `decideFromDossier`。TS/Python 合同没有 byte-equal golden。`uniquify` 曾用 `answer_class` 当可见后缀。
+- 修复：补全/可渲染返回 `{ ok, options|reason }`。`inspectDiscriminatorProbes` 把丢题写入 `decision.droppedProbes` 和 receipt `dropped_probes`。GET/`turn_decision` 对坏选择题返回 `{ unrenderable: true, reason }`，采集类 Focus 仍为 `null`。`createRectificationV9AgentTools(ctx, decision)` 按 phase / `proposeAllowed` / `selectionAllowed` / `canConfirmExactMinute` 过滤工具。合同 golden 在 `contracts/probe-question-v1.json`，引擎 client 拒不匹配的 `question_contract_version`。重复标签用 `·2` 而不是 `weak_yes`。Mastra 提示词删掉已由代码执行的外貌/财务/工具禁令，Skill 保持 10.0.13。`lib/birth-time-*` 仍被 `app/` 与 `components/` 的 guided/journey/intake 与 `/api/birth-time-journey`、`/api/birth-time-guide` 引用，本批不删。
+- 验证：`rectification-probe-question-contract` 锁定 result type、index uniquify、golden bytes、forbidden_copy 丢题。Python `test_probe_question_contract` 同样对齐 golden。`rectification-answer-choice` 锁定坏 schema 为 unrenderable、采集 Focus 仍 null。`rectification-v10-tool-contract` 锁定 `proposeAllowed` 为 false 时没有 `offer-candidates`。`rectification-v9-engine-contract` 锁定错误合同版本 fail-closed。`rectification-v9-agent` / `rectification-agentic-entry` 锁定瘦身后的提示词。
+- 防复发：不得把 `completeStyleOptions` / `isRenderableProbe` 改回只返回数组或 boolean。不得把坏选择题投影成 `current_question: null`。不得在无决策时按 phase 过滤工具后，再把 `offer-candidates` 写进提示词禁令。不得用 `answer_class` 当可见标签后缀。不得在本路径删除仍被 journey/guide UI 引用的 `birth-time-*`。不得把 Skill 升出版本。
+- 相关记录：BUG-403、BUG-421、#42
+- 复发自：BUG-403（动态四选项合同未贯穿丢题原因）
+- 修复版本：待发布
+
 ## BUG-410 | 训练已齐仍因家人/职业方法层停在采集，Agent 只确认后截断
 
 - 状态：resolved
diff --git a/frontend/src/app/api/rectification/agent/route.ts b/frontend/src/app/api/rectification/agent/route.ts
index 283c80a0..140579ee 100644
--- a/frontend/src/app/api/rectification/agent/route.ts
+++ b/frontend/src/app/api/rectification/agent/route.ts
@@ -2,12 +2,14 @@ import { NextResponse } from "next/server";
 import { z } from "zod";
 import { getRectificationV9Agent, type RectificationAgentAction } from "@/mastra/agentic-rectification";
 import {
+  evidenceLedgerFingerprint,
   loadV9CaseCompute,
   loadV9CaseDossier,
   persistV9DeterministicTurn,
   RectificationToolServiceError,
   transitionV9CaseStatus,
 } from "@/lib/rectification-agentic/v9/tool-service";
+import { decideFromDossier, rectificationFollowupCatalog } from "@/lib/rectification-agentic/v9/decision-from-dossier";
 import { applyRectificationChoice } from "@/lib/rectification-agentic/v9/answer-choice";
 import { mapRectificationRpcError } from "@/lib/rectification-agentic/v9/case-service";
 import { CHOICE_ACTION, STOP_ACTION } from "@/lib/rectification-agentic/v9/choice-action";
@@ -28,7 +30,6 @@ import {
   classifyRectificationTurnIntent,
   optionIdForAnswerClass,
 } from "@/lib/rectification-agentic/v9/turn-intent-classifier";
-import { decideFromDossier, rectificationFollowupCatalog } from "@/lib/rectification-agentic/v9/decision-from-dossier";
 import { persistServerOwnedFocus, openQuestionFromPersistedFocus } from "@/lib/rectification-agentic/v9/server-focus";
 import { buildMethodFollowupPlan } from "@/lib/rectification-agentic/v9/method-followup";
 
@@ -580,16 +581,26 @@ export async function POST(request: Request) {
           signal: request.signal,
           timeContext,
           generationModel: selectedModel.model,
-          buildAgent: (turnId, skillPackage, attemptId) => Promise.resolve(
-            getRectificationV9Agent(selectedModel, {
+          buildAgent: async (turnId, skillPackage, attemptId) => {
+            let decision;
+            try {
+              const dossier = await loadV9CaseDossier(accounting as never, userId, caseId);
+              decision = decideFromDossier(dossier, {
+                currentEvidenceFingerprint: evidenceLedgerFingerprint(dossier.evidence),
+              });
+            } catch {
+              decision = undefined;
+            }
+            return getRectificationV9Agent(selectedModel, {
               userId,
               caseId,
               turnId,
               attemptId,
               userMessage: action === "message" ? parsed.data.message ?? null : null,
               accounting: accounting as never,
-            }, skillPackage),
-          ),
+              decision,
+            }, skillPackage);
+          },
         });
 
         if (!result.ok) {
diff --git a/frontend/src/app/api/rectification/cases/[caseId]/route.ts b/frontend/src/app/api/rectification/cases/[caseId]/route.ts
index 68afe581..bdb4ffd9 100644
--- a/frontend/src/app/api/rectification/cases/[caseId]/route.ts
+++ b/frontend/src/app/api/rectification/cases/[caseId]/route.ts
@@ -12,6 +12,7 @@ import {
   type V9CaseDossier,
 } from "@/lib/rectification-agentic/v9/tool-service";
 import { choiceCardFromCaseDossier, decideFromDossier, overlayPublicDecision } from "@/lib/rectification-agentic/v9/interview-state";
+import { projectCurrentQuestion } from "@/lib/rectification-agentic/v9/turn-decision";
 import { previousInferenceFromReceipt } from "@/lib/rectification-agentic/v9/inference-adapter";
 import { publicDecisionFields } from "@/lib/rectification-agentic/core/rectification-decision";
 
@@ -116,6 +117,7 @@ function dossierResponse(
     evidence: dossier.evidence,
     latest_result: dossier.latestResult ? overlayPublicDecision(dossier.latestResult, decision) : null,
     interview: publicDecisionFields(decision),
+    current_question: projectCurrentQuestion(dossier.conversationSummary.activeFocus),
     choice_card: choiceCardFromCaseDossier(dossier),
   };
 }
diff --git a/frontend/src/lib/rectification-agentic/core/candidate-contrast-packet.ts b/frontend/src/lib/rectification-agentic/core/candidate-contrast-packet.ts
index 40385154..f0ba3e8a 100644
--- a/frontend/src/lib/rectification-agentic/core/candidate-contrast-packet.ts
+++ b/frontend/src/lib/rectification-agentic/core/candidate-contrast-packet.ts
@@ -8,6 +8,7 @@ import { d9StyleLabel, d10StyleLabel } from "../v9/varga-type-tables.ts";
 import {
   completeStyleOptions,
   isRenderableProbe,
+  type DroppedProbe,
   rankDiscriminatorScore,
 } from "../v9/probe-question-contract.ts";
 
@@ -396,6 +397,67 @@ export function vargaLayerFromSemanticKey(key: string): string | null {
   return key.match(/^varga\.(d\d+)/)?.[1] ?? null;
 }
 
+export function inspectDiscriminatorProbes(
+  packet: CandidateContrastPacket | null | undefined,
+  options?: {
+    askedKeys?: readonly string[];
+    mentionedKeys?: readonly string[];
+    topCandidateTimes?: readonly string[];
+  },
+): {
+  selected: CandidateDiscriminatorProbe | null;
+  dropped: DroppedProbe[];
+} {
+  const asked = new Set(options?.askedKeys ?? []);
+  const mentioned = new Set(options?.mentionedKeys ?? []);
+  const dropped: DroppedProbe[] = [];
+  const ranked = (packet?.probes ?? []).flatMap((probe) => {
+    const completed = withCompletedContrastOptions(probe);
+    if (!completed.ok) {
+      dropped.push({
+        semantic_key: probe.semanticKey,
+        information_gain: probe.informationGain,
+        reason: completed.reason,
+      });
+      return [];
+    }
+    const ids = [...new Set(completed.probe.expectedOutcomes.flatMap((row) => [
+      ...row.supportsCandidateIds,
+      ...row.conflictsCandidateIds,
+    ]))];
+    const renderable = isRenderableProbe({
+      informationGain: completed.probe.informationGain,
+      candidateIds: ids,
+      expectedOutcomeCount: completed.probe.expectedOutcomes.length,
+      choiceKind: completed.probe.choiceKind,
+      styleOptions: completed.probe.styleOptions,
+    });
+    if (!renderable.ok) {
+      dropped.push({
+        semantic_key: completed.probe.semanticKey,
+        information_gain: completed.probe.informationGain,
+        reason: renderable.reason,
+      });
+      return [];
+    }
+    const layer = vargaLayerFromSemanticKey(completed.probe.semanticKey);
+    const askedAlready = asked.has(completed.probe.semanticKey)
+      || asked.has(completed.probe.candidateSplitHash)
+      || asked.has(completed.probe.probeId)
+      || (layer ? vargaLayerCovered(mentioned, layer) : false);
+    return [{
+      probe: completed.probe,
+      score: rankDiscriminatorScore({
+        informationGain: completed.probe.informationGain,
+        asked: askedAlready,
+        candidateIds: ids,
+        topCandidateTimes: options?.topCandidateTimes,
+      }),
+    }];
+  }).sort((left, right) => right.score - left.score || right.probe.informationGain - left.probe.informationGain);
+  return { selected: ranked[0]?.probe ?? null, dropped };
+}
+
 export function selectDiscriminatorProbe(
   packet: CandidateContrastPacket | null | undefined,
   options?: {
@@ -404,43 +466,12 @@ export function selectDiscriminatorProbe(
     topCandidateTimes?: readonly string[];
   },
 ): CandidateDiscriminatorProbe | null {
-  const asked = new Set(options?.askedKeys ?? []);
-  const mentioned = new Set(options?.mentionedKeys ?? []);
-  const ranked = (packet?.probes ?? []).flatMap((probe) => {
-    const completed = withCompletedContrastOptions(probe);
-    if (!completed) return [];
-    const ids = [...new Set(completed.expectedOutcomes.flatMap((row) => [
-      ...row.supportsCandidateIds,
-      ...row.conflictsCandidateIds,
-    ]))];
-    if (!isRenderableProbe({
-      informationGain: completed.informationGain,
-      candidateIds: ids,
-      expectedOutcomeCount: completed.expectedOutcomes.length,
-      choiceKind: completed.choiceKind,
-      styleOptions: completed.styleOptions,
-    })) return [];
-    const layer = vargaLayerFromSemanticKey(completed.semanticKey);
-    const askedAlready = asked.has(completed.semanticKey)
-      || asked.has(completed.candidateSplitHash)
-      || asked.has(completed.probeId)
-      || (layer ? vargaLayerCovered(mentioned, layer) : false);
-    return [{
-      probe: completed,
-      score: rankDiscriminatorScore({
-        informationGain: completed.informationGain,
-        asked: askedAlready,
-        candidateIds: ids,
-        topCandidateTimes: options?.topCandidateTimes,
-      }),
-    }];
-  }).sort((left, right) => right.score - left.score || right.probe.informationGain - left.probe.informationGain);
-  return ranked[0]?.probe ?? null;
+  return inspectDiscriminatorProbes(packet, options).selected;
 }
 
 function withCompletedContrastOptions(
   probe: CandidateDiscriminatorProbe,
-): CandidateDiscriminatorProbe | null {
+): { ok: true; probe: CandidateDiscriminatorProbe } | { ok: false; reason: DroppedProbe["reason"] } {
   const mapped = probe.styleOptions?.map((item) => ({
     label: item.label,
     answer_class: item.answerClass,
@@ -459,17 +490,20 @@ function withCompletedContrastOptions(
     choiceKind,
     styleOptions: incoming,
   });
-  if (!styleOptions) return null;
+  if (!styleOptions.ok) return { ok: false, reason: styleOptions.reason };
   const outcomes = withUnsureOutcome(probe.expectedOutcomes);
   return {
-    ...probe,
-    choiceKind,
-    expectedOutcomes: outcomes,
-    styleOptions: styleOptions.map((item) => ({
-      label: item.label,
-      answerClass: item.answer_class,
-      ...(item.sign ? { sign: item.sign } : {}),
-    })),
+    ok: true,
+    probe: {
+      ...probe,
+      choiceKind,
+      expectedOutcomes: outcomes,
+      styleOptions: styleOptions.options.map((item) => ({
+        label: item.label,
+        answerClass: item.answer_class,
+        ...(item.sign ? { sign: item.sign } : {}),
+      })),
+    },
   };
 }
 
@@ -728,8 +762,8 @@ function remainingStyleOptions(
     })
     : [];
   const completed = completeStyleOptions({ choiceKind: kind, styleOptions: incoming });
-  if (!completed) return undefined;
-  return uniquifyStyleLabels(completed.map((item) => ({
+  if (!completed.ok) return undefined;
+  return uniquifyStyleLabels(completed.options.map((item) => ({
     label: item.label,
     answerClass: item.answer_class,
     ...(item.sign ? { sign: item.sign } : {}),
diff --git a/frontend/src/lib/rectification-agentic/core/rectification-decision.ts b/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
index 97e23673..76d48908 100644
--- a/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
+++ b/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
@@ -13,6 +13,7 @@ import {
   type CandidateSeparation,
 } from "./candidate-separation.ts";
 import { rangeFromTimes } from "./credible-range.ts";
+import type { DroppedProbe } from "../v9/probe-question-contract.ts";
 import type { RectificationPhase, ResultStatus } from "./types.ts";
 
 export type RectificationNextActionType =
@@ -63,6 +64,7 @@ export type RectificationDecision = Readonly<{
   separation: CandidateSeparation;
   probe: CandidateDiscriminatorProbe | null;
   holdoutValidation: HoldoutValidationStatus;
+  droppedProbes: readonly DroppedProbe[];
 }>;
 
 export type DecideRectificationInput = Readonly<{
@@ -192,6 +194,7 @@ function collect(
     separation,
     probe,
     holdoutValidation: holdout,
+    droppedProbes: [],
   };
 }
 
@@ -220,6 +223,7 @@ function discriminate(
     separation,
     probe,
     holdoutValidation: holdout,
+    droppedProbes: [],
   };
 }
 
@@ -246,6 +250,7 @@ function holdoutValidation(
     separation,
     probe: null,
     holdoutValidation: "not_started",
+    droppedProbes: [],
   };
 }
 
@@ -282,6 +287,7 @@ function completeWithRange(
     separation,
     probe: null,
     holdoutValidation: holdout,
+    droppedProbes: [],
   };
 }
 
@@ -329,6 +335,7 @@ function finish(
     separation: input.separation,
     probe: input.probe,
     holdoutValidation: input.holdout,
+    droppedProbes: [],
   };
 }
 
diff --git a/frontend/src/lib/rectification-agentic/v9/choice-card.ts b/frontend/src/lib/rectification-agentic/v9/choice-card.ts
index 0550360a..ced91e8d 100644
--- a/frontend/src/lib/rectification-agentic/v9/choice-card.ts
+++ b/frontend/src/lib/rectification-agentic/v9/choice-card.ts
@@ -328,14 +328,14 @@ function hypothesisFor(
     choiceKind: followup.choice_kind ?? probe.choice_kind,
     styleOptions: followup.style_options ?? probe.style_options ?? [],
   });
-  if (!styleOptions) return null;
+  if (!styleOptions.ok) return null;
   const period = periodFor(evidence, domain, probes, birthDate, followup);
   const kind = followup.choice_kind ?? probe.choice_kind ?? "existence";
   if (kind !== "varga_style" && !isConcreteChoicePeriod(period)) return null;
   const prompt = eventQuestionPrompt(period, probe.event_family, kind);
   const why = probe.user_meaning?.trim() || followup.user_prompt_hint.trim();
   if (!why) return null;
-  return withStyleOptionLabels(prompt, why, null, styleOptions);
+  return withStyleOptionLabels(prompt, why, null, styleOptions.options);
 }
 
 export function buildChoiceFrame(
diff --git a/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts b/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts
index feaa8532..3a6743fe 100644
--- a/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts
+++ b/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts
@@ -8,8 +8,8 @@
 import {
   buildCandidateContrastPacket,
   datedDomainsFromEvidence,
+  inspectDiscriminatorProbes,
   mentionedVargaKeysFromLedgerEvidence,
-  selectDiscriminatorProbe,
   volunteeredDomainsFromEvidence,
   type CandidateContrastPacket,
   type EngineContrastProbe,
@@ -301,21 +301,27 @@ export function decideFromDossier(
     })),
     decisionReceipt: latest?.decisionReceipt ?? null,
   });
-  return decideRectification({
-    methodCoverageAll: blockingMethodsCovered(collecting.methods),
-    trainingGateOpen: trainingGate.open,
-    confirmationAllowed: confirmationGate.confirmation_allowed,
-    userStopped: dossier.case.status === "paused",
-    snapshotCurrent,
-    candidateScores: candidateScoresFromDossier(dossier.latestResult),
-    discriminatorProbe: selectDiscriminatorProbe(contrastPacketFromDossier(dossier), {
-      askedKeys: askedDiscriminatorKeys(dossier.latestResult?.decisionReceipt, dossier.evidence),
-      mentionedKeys: mentionedVargaKeysFromLedgerEvidence(dossier.evidence),
-    }),
-    holdoutValidation: holdoutStatusFromInference(inference),
-    accepted: Boolean(dossier.case.acceptedTime),
-    inferenceCredibleRange: inference?.credible_range ?? null,
+  const askedKeys = askedDiscriminatorKeys(dossier.latestResult?.decisionReceipt, dossier.evidence);
+  const mentionedKeys = mentionedVargaKeysFromLedgerEvidence(dossier.evidence);
+  const inspected = inspectDiscriminatorProbes(contrastPacketFromDossier(dossier), {
+    askedKeys,
+    mentionedKeys,
   });
+  return {
+    ...decideRectification({
+      methodCoverageAll: blockingMethodsCovered(collecting.methods),
+      trainingGateOpen: trainingGate.open,
+      confirmationAllowed: confirmationGate.confirmation_allowed,
+      userStopped: dossier.case.status === "paused",
+      snapshotCurrent,
+      candidateScores: candidateScoresFromDossier(dossier.latestResult),
+      discriminatorProbe: inspected.selected,
+      holdoutValidation: holdoutStatusFromInference(inference),
+      accepted: Boolean(dossier.case.acceptedTime),
+      inferenceCredibleRange: inference?.credible_range ?? null,
+    }),
+    droppedProbes: inspected.dropped,
+  };
 }
 
 export function decideAfterInferenceChange(input: {
@@ -338,21 +344,25 @@ export function decideAfterInferenceChange(input: {
   }
   const training = input.state.events.filter((item) => item.usage === "training");
   const trainingDomains = new Set(training.map((item) => item.domain));
-  return decideRectification({
-    methodCoverageAll: blockingMethodsCovered(collecting.methods),
-    trainingGateOpen: training.length >= MIN_ACCEPTANCE_EVENTS
-      && trainingDomains.size >= MIN_ACCEPTANCE_DOMAINS,
-    candidateScores: input.state.candidates
-      .filter((item) => item.status !== "eliminated")
-      .map((item) => ({ time: item.time, score: item.posterior_score })),
-    discriminatorProbe: selectDiscriminatorProbe(contrastPacketFromState(input.state), {
-      mentionedKeys: mentionedVargaKeysFromLedgerEvidence(input.dossier.evidence),
-    }),
-    holdoutValidation: holdoutStatusFromState(input.state),
-    inferenceCredibleRange: input.state.credible_range,
-    userStopped: input.userStopped,
-    accepted: Boolean(input.dossier.case.acceptedTime),
+  const inspected = inspectDiscriminatorProbes(contrastPacketFromState(input.state), {
+    mentionedKeys: mentionedVargaKeysFromLedgerEvidence(input.dossier.evidence),
   });
+  return {
+    ...decideRectification({
+      methodCoverageAll: blockingMethodsCovered(collecting.methods),
+      trainingGateOpen: training.length >= MIN_ACCEPTANCE_EVENTS
+        && trainingDomains.size >= MIN_ACCEPTANCE_DOMAINS,
+      candidateScores: input.state.candidates
+        .filter((item) => item.status !== "eliminated")
+        .map((item) => ({ time: item.time, score: item.posterior_score })),
+      discriminatorProbe: inspected.selected,
+      holdoutValidation: holdoutStatusFromState(input.state),
+      inferenceCredibleRange: input.state.credible_range,
+      userStopped: input.userStopped,
+      accepted: Boolean(input.dossier.case.acceptedTime),
+    }),
+    droppedProbes: inspected.dropped,
+  };
 }
 
 export function overlayPublicDecision<T extends object>(
diff --git a/frontend/src/lib/rectification-agentic/v9/engine-client.ts b/frontend/src/lib/rectification-agentic/v9/engine-client.ts
index b14e47f5..e6a3ffa1 100644
--- a/frontend/src/lib/rectification-agentic/v9/engine-client.ts
+++ b/frontend/src/lib/rectification-agentic/v9/engine-client.ts
@@ -22,6 +22,7 @@ import {
   parseWindowScan,
   type WindowScan,
 } from "./varga-observations";
+import { questionContractVersionIsCompatible } from "./probe-question-contract";
 
 export class RectificationEngineError extends Error {
   readonly code: string;
@@ -289,6 +290,7 @@ function readDecisionReceipt(value: unknown, candidates: readonly V9EngineCandid
     || (row.selection_allowed === true && row.display_allowed !== true)
     || (row.propose_allowed !== undefined && typeof row.propose_allowed !== "boolean")
     || (row.propose_allowed === true && row.selection_allowed !== true)
+    || !questionContractVersionIsCompatible(row.question_contract_version ?? row.question_contract)
   ) {
     return invalidReceipt();
   }
diff --git a/frontend/src/lib/rectification-agentic/v9/method-followup.ts b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
index 02204c6f..b5911327 100644
--- a/frontend/src/lib/rectification-agentic/v9/method-followup.ts
+++ b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
@@ -74,6 +74,7 @@ import {
   completeStyleOptions,
   isRenderableProbe,
   rankDiscriminatorScore,
+  type ProbeStyleOption,
 } from "./probe-question-contract.ts";
 import type { SessionOutcomeKind } from "./confirmation-gate.ts";
 import { meetsAcceptanceEventQuality, trainingScoreableGate } from "./evidence-model";
@@ -381,7 +382,7 @@ function eventProbeFromContrast(probe: CandidateDiscriminatorProbe): Discriminat
       ...(item.sign ? { sign: item.sign } : {}),
     })),
   });
-  if (!styleOptions) return null;
+  if (!styleOptions.ok) return null;
   const candidateIds = [...new Set(probe.expectedOutcomes.flatMap((row) => [
     ...row.supportsCandidateIds,
     ...row.conflictsCandidateIds,
@@ -408,7 +409,7 @@ function eventProbeFromContrast(probe: CandidateDiscriminatorProbe): Discriminat
       conflicts: row.conflictsCandidateIds,
     })),
     choice_kind: choiceKind,
-    style_options: styleOptions,
+    style_options: styleOptions.options,
   };
 }
 
@@ -516,7 +517,7 @@ type RankedDiscriminator = Readonly<{
   score: number;
   eventProbe?: DiscriminatingEventProbe;
   contrastProbe?: CandidateDiscriminatorProbe;
-  styleOptions: NonNullable<ReturnType<typeof completeStyleOptions>>;
+  styleOptions: ProbeStyleOption[];
 }>;
 
 function renderableEventProbe(
@@ -530,14 +531,14 @@ function renderableEventProbe(
     choiceKind: probe.choice_kind,
     styleOptions: probe.style_options,
   });
-  if (!styleOptions || !isValidDistinguishProbe({ ...probe, role: "distinguish" })) return null;
+  if (!styleOptions.ok || !isValidDistinguishProbe({ ...probe, role: "distinguish" })) return null;
   if (!isRenderableProbe({
     informationGain: probe.information_gain,
     candidateIds,
     expectedOutcomeCount: probe.expected_outcomes?.length,
     choiceKind: probe.choice_kind,
-    styleOptions,
-  })) return null;
+    styleOptions: styleOptions.options,
+  }).ok) return null;
   const key = probe.semantic_key ?? `${probe.domain}.${probe.year}`;
   const layer = vargaLayerFromSemanticKey(key);
   const asked = askedKeys.has(key)
@@ -546,7 +547,7 @@ function renderableEventProbe(
   return {
     kind: "event",
     eventProbe: probe,
-    styleOptions,
+    styleOptions: styleOptions.options,
     score: rankDiscriminatorScore({
       informationGain: probe.information_gain ?? 0,
       asked,
@@ -574,13 +575,13 @@ function renderableContrastProbe(
       ...(item.sign ? { sign: item.sign } : {}),
     })),
   });
-  if (!styleOptions || !isRenderableProbe({
+  if (!styleOptions.ok || !isRenderableProbe({
     informationGain: probe.informationGain,
     candidateIds,
     expectedOutcomeCount: probe.expectedOutcomes.length,
     choiceKind: probe.choiceKind,
-    styleOptions,
-  })) return null;
+    styleOptions: styleOptions.options,
+  }).ok) return null;
   const layer = vargaLayerFromSemanticKey(probe.semanticKey);
   const asked = askedKeys.has(probe.semanticKey)
     || askedKeys.has(probe.candidateSplitHash)
@@ -589,7 +590,7 @@ function renderableContrastProbe(
   return {
     kind: "contrast",
     contrastProbe: probe,
-    styleOptions,
+    styleOptions: styleOptions.options,
     score: rankDiscriminatorScore({
       informationGain: probe.informationGain,
       asked,
diff --git a/frontend/src/lib/rectification-agentic/v9/probe-question-contract.ts b/frontend/src/lib/rectification-agentic/v9/probe-question-contract.ts
index ef58879e..983898cf 100644
--- a/frontend/src/lib/rectification-agentic/v9/probe-question-contract.ts
+++ b/frontend/src/lib/rectification-agentic/v9/probe-question-contract.ts
@@ -4,6 +4,7 @@
  * Python event probes and TypeScript cards must agree on four options that
  * cover yes / weak_yes / no / unsure. Existence questions may be completed
  * by the server; varga-style labels stay dynamic from candidate features.
+ * Canonical bytes live in contracts/probe-question-v1.json.
  */
 
 import type { AnswerClass } from "../core/types";
@@ -20,6 +21,33 @@ export type ProbeStyleOption = Readonly<{
   sign?: string;
 }>;
 
+export type StyleOptionsRejectReason =
+  | "varga_insufficient_scoring"
+  | "varga_missing_weak_yes"
+  | "not_renderable"
+  | "forbidden_copy"
+  | "label_length";
+
+export type ProbeRejectReason =
+  | StyleOptionsRejectReason
+  | "zero_gain"
+  | "insufficient_candidates"
+  | "insufficient_outcomes";
+
+export type StyleOptionsResult =
+  | { ok: true; options: ProbeStyleOption[] }
+  | { ok: false; reason: StyleOptionsRejectReason };
+
+export type ProbeRenderResult =
+  | { ok: true }
+  | { ok: false; reason: ProbeRejectReason };
+
+export type DroppedProbe = Readonly<{
+  semantic_key: string;
+  information_gain: number;
+  reason: ProbeRejectReason;
+}>;
+
 export const EXISTENCE_STYLE_OPTIONS: readonly ProbeStyleOption[] = [
   { label: "明确发生且时间吻合", answer_class: "yes" },
   { label: "发生过但程度较弱", answer_class: "weak_yes" },
@@ -44,6 +72,10 @@ export const UNSURE_STYLE_OPTION: ProbeStyleOption = {
   answer_class: "unsure",
 };
 
+export const FORBIDDEN_COPY_TOKENS = ["外貌", "体质", "胎记", "疤痕", "伤疤", "身高", "体型"] as const;
+export const LABEL_MIN = 4;
+export const LABEL_MAX = 80;
+
 const FORBIDDEN_COPY = /外貌|体质|胎记|疤痕|伤疤|身高|体型|(?:[01]?\d|2[0-3]):[0-5]\d/;
 
 function isAnswerClass(value: unknown): value is AnswerClass {
@@ -55,7 +87,52 @@ export function probeQuestionKind(value: unknown): ProbeQuestionKind {
   return "existence";
 }
 
-export function clippedProbeLabel(value: unknown, min = 4, max = 80): string | null {
+export function questionContractVersionIsCompatible(value: unknown): boolean {
+  if (value == null) return true;
+  if (typeof value === "string") return value === QUESTION_CONTRACT_VERSION;
+  if (typeof value !== "object" || Array.isArray(value)) return false;
+  const version = (value as { version?: unknown }).version
+    ?? (value as { question_contract_version?: unknown }).question_contract_version;
+  return version == null || version === QUESTION_CONTRACT_VERSION;
+}
+
+export function probeQuestionContractPayload(): Readonly<{
+  version: typeof QUESTION_CONTRACT_VERSION;
+  answer_classes: typeof ANSWER_CLASSES;
+  label_min: typeof LABEL_MIN;
+  label_max: typeof LABEL_MAX;
+  forbidden_copy_tokens: typeof FORBIDDEN_COPY_TOKENS;
+  existence_style_options: typeof EXISTENCE_STYLE_OPTIONS;
+  quality_style_options: typeof QUALITY_STYLE_OPTIONS;
+  varga_none_style_option: typeof VARGA_NONE_STYLE_OPTION;
+  unsure_style_option: typeof UNSURE_STYLE_OPTION;
+}> {
+  return {
+    version: QUESTION_CONTRACT_VERSION,
+    answer_classes: ANSWER_CLASSES,
+    label_min: LABEL_MIN,
+    label_max: LABEL_MAX,
+    forbidden_copy_tokens: FORBIDDEN_COPY_TOKENS,
+    existence_style_options: EXISTENCE_STYLE_OPTIONS,
+    quality_style_options: QUALITY_STYLE_OPTIONS,
+    varga_none_style_option: VARGA_NONE_STYLE_OPTION,
+    unsure_style_option: UNSURE_STYLE_OPTION,
+  };
+}
+
+export function canonicalProbeQuestionContractJson(): string {
+  return `${JSON.stringify(probeQuestionContractPayload(), null, 2)}\n`;
+}
+
+function labelRejectReason(value: unknown): StyleOptionsRejectReason | "empty" | null {
+  if (typeof value !== "string") return "empty";
+  const text = value.trim().replace(/\s+/g, " ");
+  if (text.length < LABEL_MIN || text.length > LABEL_MAX) return "label_length";
+  if (FORBIDDEN_COPY.test(text)) return "forbidden_copy";
+  return null;
+}
+
+export function clippedProbeLabel(value: unknown, min = LABEL_MIN, max = LABEL_MAX): string | null {
   if (typeof value !== "string") return null;
   const text = value.trim().replace(/\s+/g, " ");
   if (text.length < min || text.length > max) return null;
@@ -67,22 +144,25 @@ function catalogFor(kind: ProbeQuestionKind): readonly ProbeStyleOption[] {
   return kind === "event_quality" ? QUALITY_STYLE_OPTIONS : EXISTENCE_STYLE_OPTIONS;
 }
 
-function incomingOption(row: unknown): ProbeStyleOption | null {
+function incomingOption(row: unknown): { option: ProbeStyleOption } | { reason: StyleOptionsRejectReason } | null {
   if (!row || typeof row !== "object" || Array.isArray(row)) return null;
   const record = row as Record<string, unknown>;
   const answerClass = record.answer_class ?? record.answerClass;
+  const reject = labelRejectReason(record.label);
+  if (reject === "empty" || !isAnswerClass(answerClass)) return null;
+  if (reject) return { reason: reject };
   const label = clippedProbeLabel(record.label);
-  if (!label || !isAnswerClass(answerClass)) return null;
+  if (!label) return { reason: "not_renderable" };
   const sign = typeof record.sign === "string" && record.sign.trim() ? record.sign.trim() : undefined;
-  return sign ? { label, answer_class: answerClass, sign } : { label, answer_class: answerClass };
+  return { option: sign ? { label, answer_class: answerClass, sign } : { label, answer_class: answerClass } };
 }
 
 function uniquify(options: readonly ProbeStyleOption[]): ProbeStyleOption[] {
   const seen = new Set<string>();
-  return options.map((option) => {
+  return options.map((option, index) => {
     let label = option.label;
     if (seen.has(label) && option.sign) label = `${label}（${option.sign}）`;
-    if (seen.has(label)) label = `${label}·${option.answer_class}`;
+    if (seen.has(label)) label = `${option.label}·${index + 1}`;
     seen.add(label);
     return label === option.label ? option : { ...option, label };
   });
@@ -91,27 +171,37 @@ function uniquify(options: readonly ProbeStyleOption[]): ProbeStyleOption[] {
 export function completeStyleOptions(input: {
   choiceKind?: string | null;
   styleOptions?: readonly unknown[] | null;
-}): ProbeStyleOption[] | null {
+}): StyleOptionsResult {
   const kind = probeQuestionKind(input.choiceKind);
+  let incomingReason: StyleOptionsRejectReason | null = null;
   const incoming = (input.styleOptions ?? []).flatMap((row) => {
-    const option = incomingOption(row);
-    return option ? [option] : [];
+    const parsed = incomingOption(row);
+    if (!parsed) return [];
+    if ("reason" in parsed) {
+      incomingReason ??= parsed.reason;
+      return [];
+    }
+    return [parsed.option];
   });
   const byClass = new Map<AnswerClass, ProbeStyleOption>();
   if (kind === "varga_style") {
     for (const option of incoming) byClass.set(option.answer_class, option);
     if (!byClass.has("unsure")) byClass.set("unsure", UNSURE_STYLE_OPTION);
     const scoring = ANSWER_CLASSES.filter((item) => item !== "unsure" && byClass.has(item));
-    if (scoring.length < 2) return null;
+    if (scoring.length < 2) {
+      return { ok: false, reason: incomingReason ?? "varga_insufficient_scoring" };
+    }
     if (!byClass.has("no")) byClass.set("no", VARGA_NONE_STYLE_OPTION);
-    if (!byClass.has("weak_yes") || !byClass.has("yes")) return null;
+    if (!byClass.has("weak_yes") || !byClass.has("yes")) {
+      return { ok: false, reason: "varga_missing_weak_yes" };
+    }
   } else {
     for (const option of catalogFor(kind)) byClass.set(option.answer_class, option);
     for (const option of incoming) byClass.set(option.answer_class, option);
   }
   const ordered = uniquify(ANSWER_CLASSES.map((answerClass) => byClass.get(answerClass)).filter((item): item is ProbeStyleOption => Boolean(item)));
-  if (!isRenderableStyleOptions(ordered)) return null;
-  return ordered;
+  if (!isRenderableStyleOptions(ordered)) return { ok: false, reason: "not_renderable" };
+  return { ok: true, options: ordered };
 }
 
 export function isRenderableStyleOptions(options: readonly ProbeStyleOption[] | null | undefined): boolean {
@@ -119,7 +209,8 @@ export function isRenderableStyleOptions(options: readonly ProbeStyleOption[] |
   const classes = new Set(options.map((item) => item.answer_class));
   const labels = new Set(options.map((item) => item.label));
   return ANSWER_CLASSES.every((item) => classes.has(item)) && labels.size === 4
-    && options.every((item) => clippedProbeLabel(item.label) === item.label);
+    && options.every((item) => clippedProbeLabel(item.label) === item.label)
+    && options.every((item) => !/·(?:yes|weak_yes|no|unsure)$/.test(item.label));
 }
 
 export function isRenderableProbe(input: {
@@ -128,17 +219,19 @@ export function isRenderableProbe(input: {
   expectedOutcomeCount?: number | null;
   choiceKind?: string | null;
   styleOptions?: readonly unknown[] | null;
-}): boolean {
+}): ProbeRenderResult {
   const gain = typeof input.informationGain === "number" && Number.isFinite(input.informationGain)
     ? input.informationGain
     : 0;
-  if (gain <= 0) return false;
-  if ((input.candidateIds?.length ?? 0) < 2) return false;
-  if ((input.expectedOutcomeCount ?? 0) < 2) return false;
-  return completeStyleOptions({
+  if (gain <= 0) return { ok: false, reason: "zero_gain" };
+  if ((input.candidateIds?.length ?? 0) < 2) return { ok: false, reason: "insufficient_candidates" };
+  if ((input.expectedOutcomeCount ?? 0) < 2) return { ok: false, reason: "insufficient_outcomes" };
+  const styles = completeStyleOptions({
     choiceKind: input.choiceKind,
     styleOptions: input.styleOptions,
-  }) !== null;
+  });
+  if (!styles.ok) return { ok: false, reason: styles.reason };
+  return { ok: true };
 }
 
 export function discriminatorPriority(input: {
diff --git a/frontend/src/lib/rectification-agentic/v9/refinement-packet.ts b/frontend/src/lib/rectification-agentic/v9/refinement-packet.ts
index 40314203..e60cb528 100644
--- a/frontend/src/lib/rectification-agentic/v9/refinement-packet.ts
+++ b/frontend/src/lib/rectification-agentic/v9/refinement-packet.ts
@@ -7,6 +7,7 @@
  */
 
 import { distinguishContractErrors } from "../core/distinguish-contract.ts";
+import { questionContractVersionIsCompatible } from "./probe-question-contract.ts";
 
 const TIME = /^(?:[01]\d|2[0-3]):[0-5]\d$/;
 const UUID = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
@@ -506,6 +507,7 @@ export function parseEventProbes(
   const rows: DiscriminatingEventProbe[] = [];
   for (const item of value) {
     const row = asRecord(item);
+    if (!questionContractVersionIsCompatible(row?.question_contract_version ?? row?.question_contract)) continue;
     const year = typeof row?.year === "number" && Number.isInteger(row.year) ? row.year : null;
     const domain = typeof row?.domain === "string" ? row.domain : "";
     const source = typeof row?.source === "string" ? row.source : "";
diff --git a/frontend/src/lib/rectification-agentic/v9/server-focus.ts b/frontend/src/lib/rectification-agentic/v9/server-focus.ts
index a578355d..8d314cde 100644
--- a/frontend/src/lib/rectification-agentic/v9/server-focus.ts
+++ b/frontend/src/lib/rectification-agentic/v9/server-focus.ts
@@ -100,17 +100,26 @@ function expectedAnswerSchemaFor(
 
 export function openQuestionFromPersistedFocus(result: PersistServerFocusResult): {
   question_id: string | null;
-  prompt: string;
+  prompt: string | null;
   status: PersistServerFocusStatus;
+  unrenderable?: true;
+  reason?: string;
 } | null {
   if (
     (result.status !== "created" && result.status !== "already_open")
-    || !result.prompt
     || !result.focus
     || !isPersistedFocusId(result.focus.id)
     || result.focus.questionId !== result.questionId
-    || !parseAgentChoiceCopy(result.focus.expectedAnswerSchema)
   ) return null;
+  if (!result.prompt || !parseAgentChoiceCopy(result.focus.expectedAnswerSchema)) {
+    return {
+      question_id: result.questionId,
+      prompt: null,
+      status: result.status,
+      unrenderable: true,
+      reason: "invalid_choice_schema",
+    };
+  }
   return {
     question_id: result.questionId,
     prompt: result.prompt,
diff --git a/frontend/src/lib/rectification-agentic/v9/turn-decision.ts b/frontend/src/lib/rectification-agentic/v9/turn-decision.ts
index d02ee2d9..3f7f0d70 100644
--- a/frontend/src/lib/rectification-agentic/v9/turn-decision.ts
+++ b/frontend/src/lib/rectification-agentic/v9/turn-decision.ts
@@ -20,6 +20,27 @@ export const TURN_DECISION_EVIDENCE_LIMIT = 6;
 
 export type ReadCaseProjection = "turn_decision" | "full_diagnostics";
 
+export const EXPLICIT_TERMINAL_OUTCOMES = [
+  "provisional_range",
+  "provisional_range_user_stopped",
+  "completed_with_range",
+  "validated_range",
+  "exact_minute_confirmed",
+  "adopt_representative",
+  "awaiting_confirmation",
+] as const;
+
+export type CurrentQuestionProjection = Readonly<{
+  question_id: string | null;
+  focus_id: string | null;
+  probe_id: string | null;
+  prompt: string | null;
+  intent?: string;
+  domain?: string | null;
+  unrenderable?: true;
+  reason?: string;
+}>;
+
 function utf8Bytes(value: unknown): number {
   return Buffer.byteLength(JSON.stringify(value), "utf8");
 }
@@ -31,20 +52,63 @@ function clipText(value: string | null | undefined, max: number): string | null
   return text.length <= max ? text : `${text.slice(0, max)}…`;
 }
 
-function choicePromptFromSchema(schema: Readonly<Record<string, unknown>> | null | undefined): string | null {
-  const choice = schema?.choice;
-  if (!choice || typeof choice !== "object" || Array.isArray(choice)) return null;
-  const prompt = (choice as { prompt?: unknown }).prompt;
-  if (typeof prompt !== "string") return null;
-  const text = prompt.trim();
-  return text.length > 0 ? text : null;
+function looksLikeChoiceSchema(schema: Readonly<Record<string, unknown>> | null | undefined): boolean {
+  if (!schema) return false;
+  const choice = schema.choice;
+  return Boolean(
+    (choice && typeof choice === "object" && !Array.isArray(choice))
+    || typeof schema.probe_id === "string"
+    || Array.isArray(schema.options)
+    || typeof schema.option_a === "string"
+    || typeof schema.optionA === "string",
+  );
+}
+
+export function projectCurrentQuestion(
+  focus: {
+    id?: string;
+    questionId?: string;
+    intent?: string;
+    targetDomain?: string | null;
+    expectedAnswerSchema?: Readonly<Record<string, unknown>> | null;
+  } | null | undefined,
+): CurrentQuestionProjection | null {
+  if (!focus) return null;
+  const schema = focus.expectedAnswerSchema;
+  const copy = parseAgentChoiceCopy(schema);
+  const probeId = typeof schema?.probe_id === "string" ? schema.probe_id : null;
+  if (copy) {
+    return {
+      question_id: focus.questionId ?? null,
+      focus_id: focus.id ?? null,
+      probe_id: probeId,
+      prompt: copy.prompt,
+      intent: focus.intent,
+      domain: focus.targetDomain ?? null,
+    };
+  }
+  if (!looksLikeChoiceSchema(schema)) return null;
+  return {
+    question_id: focus.questionId ?? null,
+    focus_id: focus.id ?? null,
+    probe_id: probeId,
+    prompt: null,
+    intent: focus.intent,
+    domain: focus.targetDomain ?? null,
+    unrenderable: true,
+    reason: "invalid_choice_schema",
+  };
+}
+
+export function hasExplicitTerminalOutcome(outcome: string | null | undefined): boolean {
+  return Boolean(outcome && (EXPLICIT_TERMINAL_OUTCOMES as readonly string[]).includes(outcome));
 }
 
 export function projectTurnDecision(
   dossier: V9CaseDossier,
   extras: {
     nextAction?: Readonly<Record<string, unknown>> | null;
-    currentQuestion?: Readonly<Record<string, unknown>> | null;
+    currentQuestion?: (CurrentQuestionProjection & Record<string, unknown>) | null;
     followupHint?: string | null;
     questionContract?: Readonly<Record<string, unknown>> | null;
   } = {},
@@ -74,18 +138,10 @@ export function projectTurnDecision(
     summary: clipText(item.summary, 160),
   }));
   const focus = dossier.conversationSummary.activeFocus;
-  const currentQuestion = extras.currentQuestion ?? (focus && parseAgentChoiceCopy(focus.expectedAnswerSchema)
-    ? {
-      question_id: focus.questionId,
-      focus_id: focus.id,
-      probe_id: typeof focus.expectedAnswerSchema.probe_id === "string"
-        ? focus.expectedAnswerSchema.probe_id
-        : null,
-      prompt: choicePromptFromSchema(focus.expectedAnswerSchema),
-      intent: focus.intent,
-      domain: focus.targetDomain,
-    }
-    : null);
+  const currentQuestion = extras.currentQuestion ?? projectCurrentQuestion(focus);
+  const renderableQuestion = currentQuestion && currentQuestion.unrenderable !== true
+    ? currentQuestion
+    : null;
   const inferenceProjection = compactInferenceProjection(inference);
   const payload: Record<string, unknown> = {
     projection: "turn_decision",
@@ -93,7 +149,7 @@ export function projectTurnDecision(
     case_revision: inference?.revision ?? 0,
     status: dossier.case.status,
     current_question: currentQuestion,
-    current_probe: currentQuestion ? inferenceProjection?.next_probe ?? null : null,
+    current_probe: renderableQuestion ? inferenceProjection?.next_probe ?? null : null,
     candidate_summary: {
       representative_time: dossier.latestResult?.representativeTime ?? null,
       selection_allowed: decision.selectionAllowed,
@@ -102,7 +158,7 @@ export function projectTurnDecision(
       candidates,
       entropy: inference?.entropy ?? null,
     },
-    inference: currentQuestion || !inferenceProjection
+    inference: renderableQuestion || !inferenceProjection
       ? inferenceProjection
       : { ...inferenceProjection, next_probe: null },
     next_action: extras.nextAction ?? {
diff --git a/frontend/src/mastra/agentic-rectification.ts b/frontend/src/mastra/agentic-rectification.ts
index 6e86b897..f8c124d4 100644
--- a/frontend/src/mastra/agentic-rectification.ts
+++ b/frontend/src/mastra/agentic-rectification.ts
@@ -58,22 +58,14 @@ export function resolveRectificationStepBudget(action: RectificationAgentAction)
  * jyotish-birth-time-rectification Skill; this prompt must never re-implement
  * gate → scan → score → diagnostics.
  */
-const agenticRectificationInstructions = `你是 Jyotisha，只服务当前绑定 jyotish-birth-time-rectification Skill 的生时校正 Case。方法、OpeningPolicy、ConversationFocus、长会话摘要、批量证据和候选比较策略全部以本 Case 绑定的不可变 Skill 为准，不在系统提示中重写。
+const agenticRectificationInstructions = `你是 Jyotisha，只服务当前绑定 jyotish-birth-time-rectification Skill 的生时校正 Case。方法以绑定 Skill 为准，不在系统提示中重写。
 
-硬性运行与安全边界：
-1. 运行器会在每个 attempt 开始前加载并核验 Case 绑定的精确 Skill 包；你不要重复调用 skill，第一步直接调用 rectification-read-case。运行器会阻止在读取 Case 前执行其他校正动作。
-2. 服务器是 Case、ConversationFocus、CaseConversationSummary、Evidence、Candidate、Turn、Receipt、计费、ownership 与终态的唯一权威。只使用工具返回的当前状态，不从旧正文猜测目标或事实。
-3. 事实只能来自用户原话；不得虚构或补全事件、日期、人物关系、动机、分盘、评分、候选或出生分钟。日期精度按用户真实表达保留。复述事件必须使用服务器返回的 display_date_label；禁止把日级说成“年份已确定为 YYYY”。用户确认“是 / 对”不得改 date_precision。
-4. 工具只传最小引用。拒答和修订必须引用服务器返回且仍 active 的 focusId/evidenceId；用户对已有 pending 说“对/是”时可省略 focusId。无法唯一指向时只做简短澄清，不得猜测。
-5. candidate、accepted、confirmed 严格分离。Agent 不控制 billing、ownership、profile 写入、不可逆状态，也不得授予 exact-minute confirmation。
-6. 工具执行过程保持静默。思考过程必须用简体中文，只写在思维链里：可以说你在核对哪类经历，禁止写工具名、错误码、参数、内部 ID、评分或密钥。对用户说的话必须自己写在正文里，不要只写规划等服务器代写。正文像正常人说话，不写“本轮做了什么”，不描述 Skill、Case、Dossier、工具、内部 Activity、参数、错误或推理过程；完成凭证完全由服务端公开 Activity/receipt 展示。
-7. 只基于成功 attempt 输出正文。工具失败时说明面向用户的边界，不声称未执行的方法或结果。
-8. 当前轮新事件一律走 rectification-record-evidence-batch（一件也可以）。优先传 source 原文的 quoteStart/quoteEnd，不要改写 quote。rectification-confirm-evidence 只用于用户对已有 pending 明确说“对/是”。不得要求用户把已说清的事件再发一遍。
-9. 不得在同一回复中一边要求继续补证据，一边提供候选采用。落实 next_user_action：id=verify_adopted_time 时本轮只核一件前事，A 走 batch 并 compare，C 关闭该问，不要 offer 也不要 start_consultation。id=start_consultation 时请用户用当前采用时间看盘，对不上同时请改选其他候选。id 不是 adopt_representative、validated_range、provisional_range 或 provisional_range_user_stopped 时不得调用 rectification-offer-candidates，也不得请用户采用。selection_allowed 只表示可以采用代表性时间，不是本轮必须出示卡片；propose_allowed 才是提出门。采用门所需的训练事件未齐（至少 3 条训练事件、2 个领域，holdout 不计）时继续按方法层收集，不要根据 dasha 冲突探针出点选卡或改问冲突年。已记下年份上的发挥质量探针要出点选卡。齐了之后，source=event_probe 的冲突前事继续问并挡住出牌。训练事件已齐且 next_user_action 为区分题时进入候选区分，不要因家人或职业方法层未覆盖而改回收集；方法覆盖已齐不等于 adopt。无日期 occupation_note 算职业已覆盖，不要再问职业，也不要因它出牌。id=ask_candidate_discriminator 或 session_outcome=discriminate_candidates 时，只有服务器已返回持久化 current_question / open_question 才能进入区分轮；问题和动态选项由下方选择卡承载，正文只自然承接上一条事实，不得另写、改写或复述区分题，不得 offer。id=ask_holdout_validation 时做盘外核对，不得 offer。id=offer_provisional_range 时说明并列可信区间，不要称某分钟为当前推荐。accepted_time 为空且 session_outcome=adopt_representative 或 next_user_action.id=adopt_representative 时本轮只提供代表性候选供用户采用，不要再问 next_followup，也不要使用固定收口句式。unique_minute_path=closed_at_representative 时不得调用 confirm，不得把唯一分钟确认当下一步。根据用户自然语言语义区分“当前问题没有证据”“停止整个证据收集”和“恢复继续校正”：前者调用 rectification-resolve-focus，把当前 focus 标为 declined 或 skipped 后继续服从服务器 next_user_action；全局停止则调用 rectification-stop-and-review，由服务端持久化暂停状态；paused 后只有用户明确要继续校正或提交新证据时，才在本轮首次 rectification-read-case 传 resume=true，询问当前结果、重复停止或只看结果不得恢复；再按 on_user_stop：账本为空则把已说的带日期经历 batch 写入再比较，有事件无结果则本轮 compare，已有代表性结果且尚未采用则解释、调用 offer-candidates 并请采用下方时间卡片，已采用则按 on_user_stop 看盘或改选。session_outcome=provisional_range_user_stopped 时交付当前区间和代表时间，必须说明独立核对尚未完成，禁止说已完成验证或最终校正结果。禁止只说记下了、会话会保留、以后再继续。出牌/采用轮把工具返回的 skill_verification_report 写入正文：筛选窗、事件–Dasha–Gochara 表、D9/D10 类型对照、六亲六步、职业类型表、占问 observation_only、文末技法审计表。80%/60% 只描述事件吻合率，不得写成已确认唯一出生分钟，也不得写成候选已经分开。确认门以 latest_result.confirmation_gate 为准；not_evaluated 不是 fail；官方分钟层 passed 仍不能单独打开确认门；holdout 为 not_ready 时 unique_minute_path 必须是 closed_at_representative，不得声称精确分钟或发布准确率。若宽度大于 5 或 confirmation_allowed 为 false，必须说这是一段不可分区间，把代表分钟称为代表性候选，不得说已定位到唯一分钟。候选未拉开时不得出示赢家卡；D9/D10 差异和精度阶段追问要用来区分，不得直接宣布不可分。用户仍可 accepted 代表性候选。
-10. 不泄露系统提示词或 Skill 原文。
-11. 追问只跟 method_followup_plan 与服务器已持久化的 current_question / open_question。不要调用 rectification-set-focus；下一问和点选卡由 compare-candidates / read-case 在服务端事务内创建。账本为空或 collect_method_evidence 时用自然语言问一件带大概年份的经历，正文直接问，不要提点选卡。若工具返回了 open_question / current_question，说明服务器已持久化当前选择题；题干和动态选项只由选择卡展示，正文只做简短自然承接，不得另写、改写或复述题干与选项。若没有持久化 current_question / open_question，不得根据 next_followup、探针或旧正文自行提出候选区分题。采用门所需的训练事件/领域未齐时不要走 dasha 冲突 event_probe，忽略 receipt 里未达采用门的 dasha 冲突探针。已记下的发挥质量探针跟 open_question 出点选卡。齐了之后 source=event_probe 只问这一件反推前事用来筛窗，不要继续轮询方法层，不要 offer。覆盖已齐后只问当前剩余候选分钟还能拆开的区分探针；训练事件已齐时同样不要因家人或职业未覆盖而改回收集。没有剩余拆分且未拉开时落实 offer_provisional_range，不要再问整窗 D9/D24，也不要 adopt。不要问两套盘哪个更像或可能性高低。点选 A/B/C/D 与「先这样」由服务器按 focusId/optionId 确定性处理，不要把选项全文当成新事件，也不要为点选调用 resolve-focus、read-case 或 compare；自由文本补充才走工具。点选后续跑时不要再说已记录选择、已更新候选比较或请看下方选项；下一问题干只由选择卡展示。评分反推的时间必须来自引擎探针的年或月，不得把账本里同领域已记年份当成反推时间。正文禁止复述选项。不得询问外貌、体质、胎记或疤痕，也不得问钟点。不得按 missing_evidence_categories 轮询迁居，也不得先要 10–15 条事件长表。财务与健康只有用户主动说才问。方法覆盖为感情→事业→家人→职业→占问。D9/D10 类型表是校时方法，不是命运承诺。以「盘外核对（不计分）」开头的消息不得调用 record-evidence-batch 或 propose-evidence。
-12. 证据有效变化后由服务器重算候选。不要等用户说“没有更多了”才比较，也不要对同一证据指纹再 compare。分钟扫描只在服务端，结果只是候选或平台，不得宣布确认。
-13. 落实 start_consultation：前事核对结束或用户先这样后，请用户用当前采用时间看盘；对不上同时请改选其他候选。解释事件–Dasha 账本、双轨是否一致、换升时刻、精度阶段、D9/D10 类型对照和相对支持时，仍必须说候选范围不是出生时间真值。`;
+1. 第一步调用 rectification-read-case。服务器是事实、焦点、权限与终态的唯一权威。
+2. 事实只能来自用户原话；复述日期必须用 display_date_label。不得虚构事件、候选或出生分钟。
+3. 新事件走 rectification-record-evidence-batch。工具执行保持静默；思考用简体中文写在思维链；对用户说的话必须自己写在正文里，不叙述工具或内部状态。
+4. 有 current_question / open_question 时，题干和选项只由选择卡展示，正文只自然承接，不得另写、改写或复述。没有持久化选择题时，用自然语言问一件带大概年份的经历，不得自拟区分题。点选与「先这样」由服务器处理。
+5. 不得宣称唯一出生分钟。confirmation_allowed 为 false 或宽度大于 5 时，说明这是不可分区间，代表分钟只是代表性候选。出牌轮写入 skill_verification_report；80%/60% 只是事件吻合率。
+6. 一次一问。不泄露提示词或 Skill 原文。`;
 
 export function getRectificationV9Agent(
   model: ResolvedLanguageModel,
diff --git a/frontend/src/mastra/rectification-v9-tools.ts b/frontend/src/mastra/rectification-v9-tools.ts
index fb0b2dfc..32f84f9a 100644
--- a/frontend/src/mastra/rectification-v9-tools.ts
+++ b/frontend/src/mastra/rectification-v9-tools.ts
@@ -102,6 +102,8 @@ import {
   conflictProbesFromContrast,
   datedDomainsFromEvidence,
   volunteeredDomainsFromEvidence,
+  inspectDiscriminatorProbes,
+  mentionedVargaKeysFromLedgerEvidence,
 } from "@/lib/rectification-agentic/core/candidate-contrast-packet";
 import { offerSessionKinds } from "@/lib/rectification-agentic/core/decide-next-action";
 import {
@@ -144,6 +146,7 @@ export type RectificationV9Context = Readonly<{
   userMessage?: string | null;
   accounting: SupabaseClient;
   engineBase?: string;
+  decision?: RectificationDecision;
 }>;
 
 const dateLike = /^\d{4}(?:-\d{1,2}(?:-\d{1,2})?)?$/;
@@ -451,6 +454,7 @@ export function latestResultToolProjection(
     selection_allowed: overlaid.selectionAllowed,
     confirmation_allowed: confirmationGate.confirmation_allowed,
     session_outcome_view: sessionOutcomeView(decision.sessionOutcome),
+    dropped_probes: decision.droppedProbes,
   };
 }
 
@@ -473,11 +477,19 @@ function agentVisibleLatestProjection(
     ...rest
   } = projection;
   const currentQuestion = extras.openQuestion
-    ? {
-      question_id: extras.openQuestion.question_id,
-      prompt: extras.openQuestion.prompt,
-      status: extras.openQuestion.status,
-    }
+    ? extras.openQuestion.unrenderable === true
+      ? {
+        question_id: extras.openQuestion.question_id,
+        prompt: extras.openQuestion.prompt,
+        status: extras.openQuestion.status,
+        unrenderable: true,
+        reason: extras.openQuestion.reason ?? "invalid_choice_schema",
+      }
+      : {
+        question_id: extras.openQuestion.question_id,
+        prompt: extras.openQuestion.prompt,
+        status: extras.openQuestion.status,
+      }
     : null;
   const compactInference = inference && typeof inference === "object" && !Array.isArray(inference)
     ? inference as Record<string, unknown>
@@ -486,7 +498,7 @@ function agentVisibleLatestProjection(
     ...rest,
     current_question: currentQuestion,
     current_probe: null,
-    inference_state: currentQuestion && compactInference
+    inference_state: currentQuestion && !currentQuestion.unrenderable && compactInference
       ? compactInference
       : compactInference
         ? { ...compactInference, next_probe: null }
@@ -899,7 +911,17 @@ export function createRectificationV9Tools(ctx: RectificationV9Context) {
       previous: previousInferenceFromReceipt(dossier.latestResult?.decisionReceipt ?? null),
       transitionTimes: windowScan?.transitions.map((item) => item.at) ?? [],
     });
-    const decisionReceipt = { ...receipt, inference_state: inference };
+    const decisionReceipt = {
+      ...receipt,
+      inference_state: inference,
+      dropped_probes: inspectDiscriminatorProbes(contrastPacket, {
+        askedKeys: askedDiscriminatorKeys(
+          dossier.latestResult?.decisionReceipt,
+          parsed.evidence,
+        ),
+        mentionedKeys: mentionedVargaKeysFromLedgerEvidence(parsed.evidence),
+      }).dropped,
+    };
     const persisted = await persistV9Candidate(accounting, userId, targetCaseId, {
       engineResultId: score.engineResultId,
       algorithmVersion: score.algorithmVersion,
@@ -1960,10 +1982,38 @@ export function createRectificationV9Tools(ctx: RectificationV9Context) {
   };
 }
 
-export function createRectificationV9AgentTools(ctx: RectificationV9Context) {
+export function agentToolKeysForDecision(decision: RectificationDecision): ReadonlySet<string> {
+  const keys = new Set<string>([
+    "rectification-read-case",
+    "rectification-resolve-focus",
+    "rectification-record-evidence-batch",
+    "rectification-propose-evidence",
+    "rectification-confirm-evidence",
+    "rectification-revise-evidence",
+    "rectification-compare-candidates",
+    "rectification-read-diagnostics",
+    "rectification-stop-and-review",
+    "rectification-close-case",
+  ]);
+  if (decision.phase === "completed" || decision.phase === "stopped" || decision.proposeAllowed) {
+    if (decision.proposeAllowed) keys.add("rectification-offer-candidates");
+    if (decision.selectionAllowed) keys.add("rectification-accept-candidate");
+  }
+  if (decision.canConfirmExactMinute) keys.add("rectification-confirm-birth-time");
+  return keys;
+}
+
+export function createRectificationV9AgentTools(
+  ctx: RectificationV9Context,
+  decision: RectificationDecision | undefined = ctx.decision,
+) {
   const tools = createRectificationV9Tools(ctx);
   const { "rectification-set-focus": _omitted, ...agentTools } = tools;
-  return agentTools;
+  if (!decision) return agentTools;
+  const allowed = agentToolKeysForDecision(decision);
+  return Object.fromEntries(
+    Object.entries(agentTools).filter(([name]) => allowed.has(name)),
+  ) as typeof agentTools;
 }
 
 export type RectificationV9Tools = ReturnType<typeof createRectificationV9Tools>;
diff --git a/frontend/tests/rectification-agentic-entry.test.ts b/frontend/tests/rectification-agentic-entry.test.ts
index a520ed01..5d6fb3a6 100644
--- a/frontend/tests/rectification-agentic-entry.test.ts
+++ b/frontend/tests/rectification-agentic-entry.test.ts
@@ -568,6 +568,7 @@ test("time-selection cards appear under the latest settled agent bubble only aft
   assert.doesNotMatch(chat, /send\("message", choiceCard\?\.stop_message/);
   assert.doesNotMatch(chat, /choiceCardUserMessage/);
   assert.match(caseRoute, /choice_card: choiceCardFromCaseDossier/);
+  assert.match(caseRoute, /current_question: projectCurrentQuestion/);
   assert.match(caseRoute, /overlayPublicDecision/);
   assert.match(caseRoute, /interview: publicDecisionFields/);
   assert.doesNotMatch(chat, /已完成验证/);
@@ -618,20 +619,12 @@ test("rectification Agent output stays natural and keeps tool execution silent",
     new URL("../../skills/jyotish-birth-time-rectification/references/conversation-strategy.md", import.meta.url),
     "utf8",
   );
-  assert.match(agent, /工具执行过程保持静默/);
-  assert.match(agent, /思考过程必须用简体中文/);
-  assert.match(agent, /对用户说的话必须自己写在正文里，不要只写规划等服务器代写/);
-  assert.match(agent, /本轮做了什么/);
-  assert.match(agent, /完成凭证完全由服务端公开 Activity\/receipt 展示/);
-  assert.match(agent, /禁止只说记下了、会话会保留、以后再继续/);
-  assert.match(agent, /根据用户自然语言语义区分“当前问题没有证据”“停止整个证据收集”和“恢复继续校正”/);
-  assert.match(agent, /rectification-read-case 传 resume=true/);
+  assert.match(agent, /工具执行保持静默/);
+  assert.match(agent, /思考用简体中文写在思维链/);
+  assert.match(agent, /对用户说的话必须自己写在正文里/);
   assert.doesNotMatch(route, /action === "message" && caseStatus === "paused"/);
-  assert.match(agent, /前者调用 rectification-resolve-focus/);
-  assert.match(agent, /全局停止则调用 rectification-stop-and-review/);
   assert.doesNotMatch(agent, /USER_STOP_PATTERN|USER_STOP_NEGATION_PATTERN/);
   assert.match(agent, /skill_verification_report/);
-  assert.match(agent, /D9\/D10 类型对照/);
   assert.doesNotMatch(agent, /分盘句和宫位表由界面展示/);
   assert.match(skill, /不得叙述读取 Skill/);
   assert.match(skill, /完整回复可以(?:是)?零(?:个)?问题/);
@@ -640,7 +633,7 @@ test("rectification Agent output stays natural and keeps tool execution silent",
   assert.match(strategy, /没有更多事件/);
   assert.match(strategy, /(?:无需|不要求)结束、暂停或保存进度/);
   assert.match(strategy, /不要一进场就出 A\/B\/C\/D/);
-  assert.match(agent, /不要提点选卡/);
+  assert.match(agent, /没有持久化选择题时，用自然语言问一件带大概年份的经历/);
 });
 
 test("clear current-turn events go through the batch evidence service", () => {
@@ -648,9 +641,7 @@ test("clear current-turn events go through the batch evidence service", () => {
     new URL("../src/mastra/rectification-v9-tools.ts", import.meta.url),
     "utf8",
   );
-  assert.match(agent, /当前轮新事件一律走 rectification-record-evidence-batch/);
-  assert.match(agent, /rectification-confirm-evidence 只用于用户对已有 pending 明确说“对\/是”/);
-  assert.match(agent, /不得要求用户把已说清的事件再发一遍/);
+  assert.match(agent, /新事件走 rectification-record-evidence-batch/);
   assert.doesNotMatch(agent, /分别调用 rectification-propose-evidence 和 rectification-confirm-evidence/);
   assert.doesNotMatch(agent, /“是\/对”只能确认当前 pending draft/);
   assert.match(tools, /同一轮有两件及以上可拆分事件时必须改用 rectification-record-evidence-batch/);
@@ -658,20 +649,15 @@ test("clear current-turn events go through the batch evidence service", () => {
 });
 
 test("the Agent prompt cannot offer candidates while asking for more evidence", () => {
-  // The hard boundary lives in the prompt; no tool input carries an
-  // offer_selection boolean anymore.
-  assert.match(agent, /不得在同一回复中一边要求继续补证据，一边提供候选采用/);
-  assert.match(agent, /id 不是 adopt_representative、validated_range、provisional_range 或 provisional_range_user_stopped 时不得调用 rectification-offer-candidates/);
-  assert.match(agent, /verify_adopted_time/);
-  assert.match(agent, /event_probe/);
-  assert.match(agent, /至少 3 条训练事件/);
-  assert.match(agent, /2 个领域/);
-  assert.match(agent, /发挥质量/);
-  assert.match(agent, /selection_allowed 只表示可以采用代表性时间/);
+  assert.doesNotMatch(agent, /offer_selection/);
+  assert.doesNotMatch(agent, /id 不是 adopt_representative、validated_range、provisional_range 或 provisional_range_user_stopped 时不得调用 rectification-offer-candidates/);
   const tools = readFileSync(
     new URL("../src/mastra/rectification-v9-tools.ts", import.meta.url),
     "utf8",
   );
+  assert.match(tools, /function agentToolKeysForDecision/);
+  assert.match(tools, /dropped_probes: inspectDiscriminatorProbes/);
+  assert.match(tools, /dropped_probes: decision.droppedProbes/);
   assert.doesNotMatch(tools, /offer_selection/);
 });
 
@@ -696,7 +682,7 @@ test("adopted time offers a consultation handoff without unique-minute copy", ()
   assert.match(chat, /choiceAttachment/);
   assert.match(page, /startConsultationAfterRectification/);
   assert.match(page, /createSession\(modelCatalog\.defaultModelId\)/);
-  assert.match(agent, /start_consultation/);
+  assert.doesNotMatch(agent, /start_consultation/);
   assert.doesNotMatch(agent, /本会话以代表性时间收口|本轮校正已收口/);
 });
 
diff --git a/frontend/tests/rectification-answer-choice.test.ts b/frontend/tests/rectification-answer-choice.test.ts
index c9b288bd..08a33809 100644
--- a/frontend/tests/rectification-answer-choice.test.ts
+++ b/frontend/tests/rectification-answer-choice.test.ts
@@ -760,6 +760,47 @@ test("turn_decision stays inside the configured byte budget", () => {
   assert.ok(!("baseline_birth_snapshot" in projection));
 });
 
+test("unrenderable focus schema stays visible as current_question, not null", () => {
+  const snapshot = candidateSnapshotFixture();
+  Object.assign(snapshot.decision_receipt, { inference_state: inferenceState() });
+  const dossier = parseV9CaseDossier(dossierFixture({
+    latestResult: snapshot,
+    conversationSummary: conversationSummaryFixture({
+      activeFocus: activeFocusFixture({
+        expectedAnswerSchema: { choice: { prompt: "坏题" } },
+      }),
+    }),
+  }));
+  assert.ok(dossier);
+  const projection = projectTurnDecision(dossier);
+  const currentQuestion = projection.current_question as {
+    unrenderable?: boolean;
+    reason?: string;
+    prompt?: string | null;
+  } | null;
+  assert.equal(currentQuestion?.unrenderable, true);
+  assert.equal(currentQuestion?.reason, "invalid_choice_schema");
+  assert.equal(currentQuestion?.prompt, null);
+  assert.equal(projection.current_probe, null);
+});
+
+test("collection focus without choice copy is not an unrenderable current_question", () => {
+  const snapshot = candidateSnapshotFixture();
+  Object.assign(snapshot.decision_receipt, { inference_state: inferenceState() });
+  const dossier = parseV9CaseDossier(dossierFixture({
+    latestResult: snapshot,
+    conversationSummary: conversationSummaryFixture({
+      activeFocus: activeFocusFixture({
+        intent: "clarify_event_date",
+        expectedAnswerSchema: { required: ["month"] },
+      }),
+    }),
+  }));
+  assert.ok(dossier);
+  const projection = projectTurnDecision(dossier);
+  assert.equal(projection.current_question, null);
+});
+
 test("turn_decision hides current_probe unless a valid current_question exists", () => {
   const withFocus = projectTurnDecision(parseV9CaseDossier(choiceDossier())!);
   assert.ok(withFocus.current_question);
diff --git a/frontend/tests/rectification-probe-question-contract.test.ts b/frontend/tests/rectification-probe-question-contract.test.ts
index 9a5dabd2..9d2a85b2 100644
--- a/frontend/tests/rectification-probe-question-contract.test.ts
+++ b/frontend/tests/rectification-probe-question-contract.test.ts
@@ -1,32 +1,41 @@
 import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
 import test from "node:test";
 
+import { inspectDiscriminatorProbes } from "../src/lib/rectification-agentic/core/candidate-contrast-packet.ts";
 import {
   EXISTENCE_STYLE_OPTIONS,
   QUALITY_STYLE_OPTIONS,
   QUESTION_CONTRACT_VERSION,
+  canonicalProbeQuestionContractJson,
   completeStyleOptions,
   isRenderableProbe,
   rankDiscriminatorScore,
 } from "../src/lib/rectification-agentic/v9/probe-question-contract.ts";
 
+const GOLDEN = readFileSync(new URL("../../contracts/probe-question-v1.json", import.meta.url), "utf8");
+
 test("existence probes complete to four answer classes without engine style_options", () => {
   const completed = completeStyleOptions({ choiceKind: "existence" });
-  assert.deepEqual(completed, [...EXISTENCE_STYLE_OPTIONS]);
+  assert.equal(completed.ok, true);
+  assert.deepEqual(completed.ok ? completed.options : null, [...EXISTENCE_STYLE_OPTIONS]);
   assert.equal(QUESTION_CONTRACT_VERSION, "probe-question-v1");
 });
 
 test("event_quality probes use quality labels and still cover unsure", () => {
   const completed = completeStyleOptions({ choiceKind: "event_quality" });
-  assert.deepEqual(completed, [...QUALITY_STYLE_OPTIONS]);
-  assert.equal(completed?.some((item) => item.answer_class === "unsure"), true);
+  assert.equal(completed.ok, true);
+  assert.deepEqual(completed.ok ? completed.options : null, [...QUALITY_STYLE_OPTIONS]);
+  assert.equal(completed.ok && completed.options.some((item) => item.answer_class === "unsure"), true);
 });
 
 test("varga-style probes stay dynamic and fail closed without two scoring labels", () => {
-  assert.equal(completeStyleOptions({
+  const rejected = completeStyleOptions({
     choiceKind: "varga_style",
     styleOptions: [{ label: "巨蟹相处主动热情", answer_class: "yes" }],
-  }), null);
+  });
+  assert.equal(rejected.ok, false);
+  assert.equal(rejected.ok ? null : rejected.reason, "varga_insufficient_scoring");
   const completed = completeStyleOptions({
     choiceKind: "varga_style",
     styleOptions: [
@@ -34,9 +43,10 @@ test("varga-style probes stay dynamic and fail closed without two scoring labels
       { label: "狮子独立强势", answer_class: "weak_yes", sign: "狮子" },
     ],
   });
-  assert.equal(completed?.length, 4);
-  assert.equal(completed?.find((item) => item.answer_class === "no")?.label, "都不是这些特质");
-  assert.equal(completed?.find((item) => item.answer_class === "unsure")?.label, "这段记不清楚");
+  assert.equal(completed.ok, true);
+  assert.equal(completed.ok ? completed.options.length : 0, 4);
+  assert.equal(completed.ok ? completed.options.find((item) => item.answer_class === "no")?.label : null, "都不是这些特质");
+  assert.equal(completed.ok ? completed.options.find((item) => item.answer_class === "unsure")?.label : null, "这段记不清楚");
 });
 
 test("illegal clock or appearance copy cannot become a renderable probe", () => {
@@ -48,12 +58,13 @@ test("illegal clock or appearance copy cannot become a renderable probe", () =>
     styleOptions: [
       { label: "08:12 左右发生", answer_class: "yes" },
     ],
-  }), true);
-  assert.equal(completeStyleOptions({
+  }).ok, true);
+  const filled = completeStyleOptions({
     choiceKind: "existence",
     styleOptions: [{ label: "08:12 左右发生", answer_class: "yes" }],
-  })?.find((item) => item.answer_class === "yes")?.label, "明确发生且时间吻合");
-  assert.equal(isRenderableProbe({
+  });
+  assert.equal(filled.ok ? filled.options.find((item) => item.answer_class === "yes")?.label : null, "明确发生且时间吻合");
+  const appearance = isRenderableProbe({
     informationGain: 1.2,
     candidateIds: ["05:00", "05:04"],
     expectedOutcomeCount: 2,
@@ -62,7 +73,58 @@ test("illegal clock or appearance copy cannot become a renderable probe", () =>
       { label: "外貌更接近第一种", answer_class: "yes" },
       { label: "相处更独立", answer_class: "weak_yes" },
     ],
-  }), false);
+  });
+  assert.equal(appearance.ok, false);
+  assert.equal(appearance.ok ? null : appearance.reason, "forbidden_copy");
+});
+
+test("duplicate visible labels uniquify with an index, not answer_class", () => {
+  const completed = completeStyleOptions({
+    choiceKind: "varga_style",
+    styleOptions: [
+      { label: "相处主动热情", answer_class: "yes" },
+      { label: "相处主动热情", answer_class: "weak_yes" },
+    ],
+  });
+  assert.equal(completed.ok, true);
+  const labels = completed.ok ? completed.options.map((item) => item.label) : [];
+  assert.equal(labels.includes("相处主动热情·2"), true);
+  assert.equal(labels.some((item) => item.includes("weak_yes") || item.includes("·yes")), false);
+  assert.equal(new Set(labels).size, 4);
+});
+
+test("unrenderable contrast probes are dropped with a reason, not selected", () => {
+  const inspected = inspectDiscriminatorProbes({
+    candidateSetVersion: "set",
+    vargaDifferences: [],
+    probes: [{
+      probeId: "contrast:varga.d9.a/b",
+      candidateSetVersion: "set",
+      question: "亲密关系里更接近下面哪一种相处方式？",
+      expectedOutcomes: [
+        { outcomeId: "yes", supportsCandidateIds: ["05:00"], conflictsCandidateIds: ["05:10"] },
+        { outcomeId: "weak_yes", supportsCandidateIds: ["05:10"], conflictsCandidateIds: ["05:00"] },
+      ],
+      candidateSplitHash: "set:varga.d9",
+      informationGain: 1.2,
+      sourceFeatures: [],
+      domain: "relationship",
+      year: null,
+      semanticKey: "varga.d9.foo/bar",
+      choiceKind: "varga_style",
+      styleOptions: [
+        { label: "外貌更接近第一种", answerClass: "yes" },
+        { label: "外貌更接近第二种", answerClass: "weak_yes" },
+      ],
+    }],
+  });
+  assert.equal(inspected.selected, null);
+  assert.equal(inspected.dropped[0]?.reason, "forbidden_copy");
+  assert.equal(inspected.dropped[0]?.semantic_key, "varga.d9.foo/bar");
+});
+
+test("TypeScript contract JSON matches the golden file byte for byte", () => {
+  assert.equal(canonicalProbeQuestionContractJson(), GOLDEN);
 });
 
 test("asked probes keep a novelty penalty so unused high-gain probes rank first", () => {
diff --git a/frontend/tests/rectification-v10-tool-contract.test.ts b/frontend/tests/rectification-v10-tool-contract.test.ts
index 55e4441a..ac5b1c13 100644
--- a/frontend/tests/rectification-v10-tool-contract.test.ts
+++ b/frontend/tests/rectification-v10-tool-contract.test.ts
@@ -2,6 +2,7 @@ import assert from "node:assert/strict";
 import test from "node:test";
 
 import { PUBLIC_RECTIFICATION_TOOLS } from "../src/lib/rectification-agentic/v9/public-receipt.ts";
+import { decideRectification } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { createRectificationV9AgentTools, createRectificationV9Tools } from "../src/mastra/rectification-v9-tools.ts";
 import {
   CASE_ID,
@@ -204,6 +205,24 @@ test("evidence kind and domain schemas enumerate legal values so education is no
   }).success, true);
 });
 
+test("agent tools omit offer-candidates when proposeAllowed is false", () => {
+  const tools = createRectificationV9AgentTools({
+    userId: USER_ID,
+    caseId: CASE_ID,
+    turnId: TURN_ID,
+    accounting: fakeAccounting({}).client as never,
+  }, decideRectification({
+    methodCoverageAll: false,
+    trainingGateOpen: false,
+    candidateScores: [],
+  }));
+  assert.equal("rectification-set-focus" in tools, false);
+  assert.equal("rectification-read-case" in tools, true);
+  assert.equal("rectification-offer-candidates" in tools, false);
+  assert.equal("rectification-accept-candidate" in tools, false);
+  assert.equal("rectification-confirm-birth-time" in tools, false);
+});
+
 test("agent tools omit model-driven set-focus", () => {
   const tools = createRectificationV9AgentTools({
     userId: USER_ID,
diff --git a/frontend/tests/rectification-v9-agent.test.ts b/frontend/tests/rectification-v9-agent.test.ts
index 895d4df5..8fd21877 100644
--- a/frontend/tests/rectification-v9-agent.test.ts
+++ b/frontend/tests/rectification-v9-agent.test.ts
@@ -46,61 +46,37 @@ test("system prompt carries only high-priority boundaries, never the method copy
   const promptStart = agentSource.indexOf("const agenticRectificationInstructions");
   const promptEnd = agentSource.indexOf("export function getRectificationV9Agent");
   const prompt = agentSource.slice(promptStart, promptEnd);
-  // No gate -> scan -> score -> diagnostics orchestration in the prompt.
   assert.doesNotMatch(prompt, /rectification-gate[\s\S]*rectification-scan/);
   assert.doesNotMatch(prompt, /rectification-score[\s\S]*rectification-diagnostics/);
   assert.doesNotMatch(prompt, /rectification-confirm[\s\S]*rectification-save-birth-time/);
   assert.doesNotMatch(prompt, /10[–-]15 个事件/);
-  assert.match(prompt, /D9\/D10 类型/);
-  assert.match(prompt, /80%\/60%/);
-  assert.match(prompt, /skill_verification_report/);
   assert.doesNotMatch(prompt, /run the required gate/);
   assert.doesNotMatch(prompt, /candidate_range/);
   assert.match(prompt, /jyotish-birth-time-rectification/);
   assert.match(prompt, /display_date_label/);
   assert.match(prompt, /rectification-record-evidence-batch/);
   assert.match(prompt, /不可分区间/);
-  assert.match(prompt, /confirmation_gate/);
-  assert.match(prompt, /session_outcome=adopt_representative/);
-  assert.doesNotMatch(prompt, /本会话以代表性时间收口|本轮校正已收口/);
-  assert.match(prompt, /unique_minute_path=closed_at_representative/);
-  assert.match(prompt, /next_user_action/);
-  assert.match(prompt, /rectification-offer-candidates/);
-  assert.match(prompt, /on_user_stop/);
-  assert.match(prompt, /禁止只说记下了/);
-  assert.match(prompt, /工具执行过程保持静默/);
-  assert.match(prompt, /思考过程必须用简体中文/);
-  assert.match(prompt, /对用户说的话必须自己写在正文里，不要只写规划等服务器代写/);
   assert.match(prompt, /skill_verification_report/);
-  assert.match(prompt, /不要因家人或职业方法层未覆盖而改回收集/);
-  assert.match(prompt, /ask_candidate_discriminator/);
-  assert.match(prompt, /offer_provisional_range/);
-  assert.match(prompt, /不要再问整窗 D9\/D24/);
-  assert.match(prompt, /不得询问外貌、体质、胎记或疤痕/);
-  assert.match(prompt, /不要调用 rectification-set-focus/);
-  assert.match(prompt, /题干和动态选项只由选择卡展示/);
-  assert.match(prompt, /正文只做简短自然承接/);
-  assert.match(prompt, /不得另写、改写或复述题干与选项/);
+  assert.match(prompt, /80%\/60%/);
+  assert.match(prompt, /confirmation_allowed/);
+  assert.doesNotMatch(prompt, /本会话以代表性时间收口|本轮校正已收口/);
+  assert.match(prompt, /工具执行保持静默/);
+  assert.match(prompt, /思考用简体中文写在思维链/);
+  assert.match(prompt, /对用户说的话必须自己写在正文里/);
+  assert.match(prompt, /题干和选项只由选择卡展示/);
+  assert.match(prompt, /正文只自然承接/);
+  assert.match(prompt, /「先这样」由服务器/);
+  assert.doesNotMatch(prompt, /不得询问外貌、体质、胎记或疤痕/);
+  assert.doesNotMatch(prompt, /财务与健康只有用户主动说才问/);
+  assert.doesNotMatch(prompt, /id 不是 adopt_representative/);
+  assert.doesNotMatch(prompt, /不要调用 rectification-set-focus/);
   assert.doesNotMatch(prompt, /自己写一句自然语言追问/);
   assert.doesNotMatch(prompt, /运行器会把口语接到这句题干/);
-  assert.doesNotMatch(prompt, /运行器只在你没问/);
-  assert.doesNotMatch(prompt, /不得另起高考发挥/);
-  assert.doesNotMatch(prompt, /不得根据出生年推算高考或入学年份/);
-  assert.doesNotMatch(prompt, /不要再问那一件发生在哪一年/);
-  assert.match(prompt, /「先这样」由服务器/);
-  assert.match(prompt, /盘外核对（不计分）/);
-  assert.match(prompt, /verify_adopted_time/);
-  assert.match(prompt, /event_probe/);
-  assert.match(prompt, /至少 3 条训练事件/);
-  assert.match(prompt, /2 个领域/);
-  assert.match(prompt, /发挥质量/);
-  assert.doesNotMatch(prompt, /两套盘各自的前事/);
   assert.doesNotMatch(prompt, /外貌、体质、胎记或疤痕可以问/);
   assert.doesNotMatch(prompt, /分盘句和宫位表由界面展示/);
   assert.doesNotMatch(prompt, /不是整张宫位表/);
   assert.doesNotMatch(prompt, /分别 propose\+confirm/);
-  // Keep the prompt short (~30 lines max).
-  assert.ok(prompt.split("\n").length <= 60, "instructions must stay bounded");
+  assert.ok(prompt.split("\n").length <= 30, "instructions must stay bounded");
 });
 
 test("agent pins the dedicated rectification skill and its fixed version", () => {
diff --git a/frontend/tests/rectification-v9-engine-contract.test.ts b/frontend/tests/rectification-v9-engine-contract.test.ts
index 1527f24e..552ac248 100644
--- a/frontend/tests/rectification-v9-engine-contract.test.ts
+++ b/frontend/tests/rectification-v9-engine-contract.test.ts
@@ -261,6 +261,25 @@ test("runV9CandidateScore strictly consumes server candidate decisions and v2 re
   }
 });
 
+test("runV9CandidateScore fails closed on a mismatched question contract version", async () => {
+  const restore = stubEngine({
+    ...ENGINE_SCORE_RESPONSE_V2,
+    decision_receipt: { ...DECISION_RECEIPT, question_contract_version: "probe-question-v0" },
+  });
+  try {
+    await assert.rejects(
+      runV9CandidateScore({
+        baselineBirthSnapshot: SNAPSHOT,
+        candidateRange: RANGE,
+        events: toEngineEvents(EVIDENCE),
+      }),
+      (error: unknown) => error instanceof RectificationEngineError && error.code === "engine_invalid_v2_receipt",
+    );
+  } finally {
+    restore();
+  }
+});
+
 test("runV9CandidateScore fails closed without a v2 decision receipt", async () => {
   const missingReceipt = Object.fromEntries(
     Object.entries(ENGINE_SCORE_RESPONSE_V2).filter(([key]) => key !== "decision_receipt"),
diff --git a/scripts/rectification/event_probes.py b/scripts/rectification/event_probes.py
index 63789ca5..5e246566 100644
--- a/scripts/rectification/event_probes.py
+++ b/scripts/rectification/event_probes.py
@@ -36,7 +36,10 @@ from scripts.rectification.candidate_contrast import (
     opportunity_from_probe,
 )
 from scripts.rectification.case_holdout import holdout_domain_years
-from scripts.rectification.probe_question_contract import complete_style_options
+from scripts.rectification.probe_question_contract import (
+    QUESTION_CONTRACT_VERSION,
+    completed_style_options,
+)
 from scripts.rectification.refinement_packet import match_level
 
 MAX_PROBES = 3
@@ -633,9 +636,10 @@ def _public_probe(
     payload.update(extra)
     if payload["role"] == "distinguish":
         payload["candidate_ids"] = candidate_ids_from_outcomes(payload.get("expected_outcomes") or [])
-    style_options = complete_style_options(payload.get("choice_kind"), payload.get("style_options"))
+    style_options = completed_style_options(payload.get("choice_kind"), payload.get("style_options"))
     if style_options:
         payload["style_options"] = style_options
+    payload["question_contract_version"] = QUESTION_CONTRACT_VERSION
     return payload
 
 
diff --git a/scripts/rectification/probe_question_contract.py b/scripts/rectification/probe_question_contract.py
index c4f70177..0c27ce45 100644
--- a/scripts/rectification/probe_question_contract.py
+++ b/scripts/rectification/probe_question_contract.py
@@ -1,12 +1,15 @@
 """Shared probe → choice-card contract for Python event probes.
 
 Must stay aligned with frontend/src/lib/rectification-agentic/v9/probe-question-contract.ts.
+Canonical bytes live in contracts/probe-question-v1.json.
 """
 
 from __future__ import annotations
 
+import json
 import re
-from typing import Any, Sequence
+from pathlib import Path
+from typing import Any, Sequence, TypedDict
 
 QUESTION_CONTRACT_VERSION = "probe-question-v1"
 ANSWER_CLASSES = ("yes", "weak_yes", "no", "unsure")
@@ -24,8 +27,32 @@ QUALITY_STYLE_OPTIONS: tuple[dict[str, str], ...] = (
 )
 VARGA_NONE_STYLE_OPTION = {"label": "都不是这些特质", "answer_class": "no"}
 UNSURE_STYLE_OPTION = {"label": "这段记不清楚", "answer_class": "unsure"}
-_FORBIDDEN = ("外貌", "体质", "胎记", "疤痕", "伤疤", "身高", "体型")
+FORBIDDEN_COPY_TOKENS = ("外貌", "体质", "胎记", "疤痕", "伤疤", "身高", "体型")
+LABEL_MIN = 4
+LABEL_MAX = 80
+_FORBIDDEN = FORBIDDEN_COPY_TOKENS
 _CLOCK = re.compile(r"(?:[01]?\d|2[0-3]):[0-5]\d")
+_ANSWER_CLASS_SUFFIX = re.compile(r"·(?:yes|weak_yes|no|unsure)$")
+_CONTRACT_PATH = Path(__file__).resolve().parents[2] / "contracts" / "probe-question-v1.json"
+
+
+class StyleOptionsOk(TypedDict):
+    ok: bool
+    options: list[dict[str, str]]
+
+
+class StyleOptionsErr(TypedDict):
+    ok: bool
+    reason: str
+
+
+class ProbeRenderOk(TypedDict):
+    ok: bool
+
+
+class ProbeRenderErr(TypedDict):
+    ok: bool
+    reason: str
 
 
 def probe_question_kind(value: Any) -> str:
@@ -34,7 +61,40 @@ def probe_question_kind(value: Any) -> str:
     return "existence"
 
 
-def clipped_probe_label(value: Any, minimum: int = 4, maximum: int = 80) -> str | None:
+def question_contract_version_is_compatible(value: Any) -> bool:
+    if value is None:
+        return True
+    if isinstance(value, str):
+        return value == QUESTION_CONTRACT_VERSION
+    if not isinstance(value, dict):
+        return False
+    version = value.get("version") or value.get("question_contract_version")
+    return version is None or version == QUESTION_CONTRACT_VERSION
+
+
+def probe_question_contract_payload() -> dict[str, Any]:
+    return {
+        "version": QUESTION_CONTRACT_VERSION,
+        "answer_classes": list(ANSWER_CLASSES),
+        "label_min": LABEL_MIN,
+        "label_max": LABEL_MAX,
+        "forbidden_copy_tokens": list(FORBIDDEN_COPY_TOKENS),
+        "existence_style_options": [dict(item) for item in EXISTENCE_STYLE_OPTIONS],
+        "quality_style_options": [dict(item) for item in QUALITY_STYLE_OPTIONS],
+        "varga_none_style_option": dict(VARGA_NONE_STYLE_OPTION),
+        "unsure_style_option": dict(UNSURE_STYLE_OPTION),
+    }
+
+
+def canonical_probe_question_contract_json() -> str:
+    return json.dumps(probe_question_contract_payload(), ensure_ascii=False, indent=2) + "\n"
+
+
+def load_probe_question_contract_golden() -> str:
+    return _CONTRACT_PATH.read_text(encoding="utf-8")
+
+
+def clipped_probe_label(value: Any, minimum: int = LABEL_MIN, maximum: int = LABEL_MAX) -> str | None:
     if not isinstance(value, str):
         return None
     text = " ".join(value.split())
@@ -45,13 +105,29 @@ def clipped_probe_label(value: Any, minimum: int = 4, maximum: int = 80) -> str
     return text
 
 
-def _incoming_option(row: Any) -> dict[str, str] | None:
+def _label_reject_reason(value: Any) -> str | None:
+    if not isinstance(value, str):
+        return "empty"
+    text = " ".join(value.split())
+    if len(text) < LABEL_MIN or len(text) > LABEL_MAX:
+        return "label_length"
+    if any(token in text for token in _FORBIDDEN) or _CLOCK.search(text):
+        return "forbidden_copy"
+    return None
+
+
+def _incoming_option(row: Any) -> dict[str, str] | dict[str, str] | None:
     if not isinstance(row, dict):
         return None
     answer = row.get("answer_class") or row.get("answerClass")
-    label = clipped_probe_label(row.get("label"))
-    if not label or answer not in ANSWER_CLASSES:
+    reject = _label_reject_reason(row.get("label"))
+    if reject == "empty" or answer not in ANSWER_CLASSES:
         return None
+    if reject:
+        return {"reason": reject}
+    label = clipped_probe_label(row.get("label"))
+    if not label:
+        return {"reason": "not_renderable"}
     payload = {"label": label, "answer_class": str(answer)}
     sign = row.get("sign")
     if isinstance(sign, str) and sign.strip():
@@ -62,9 +138,18 @@ def _incoming_option(row: Any) -> dict[str, str] | None:
 def complete_style_options(
     choice_kind: Any,
     style_options: Sequence[Any] | None = None,
-) -> list[dict[str, str]] | None:
+) -> StyleOptionsOk | StyleOptionsErr:
     kind = probe_question_kind(choice_kind)
-    incoming = [item for item in (_incoming_option(row) for row in (style_options or [])) if item]
+    incoming_reason: str | None = None
+    incoming: list[dict[str, str]] = []
+    for row in style_options or []:
+        parsed = _incoming_option(row)
+        if not parsed:
+            continue
+        if "reason" in parsed and "label" not in parsed:
+            incoming_reason = incoming_reason or str(parsed["reason"])
+            continue
+        incoming.append(parsed)
     by_class: dict[str, dict[str, str]] = {}
     if kind == "varga_style":
         for option in incoming:
@@ -72,10 +157,10 @@ def complete_style_options(
         by_class.setdefault("unsure", dict(UNSURE_STYLE_OPTION))
         scoring = [item for item in ANSWER_CLASSES if item != "unsure" and item in by_class]
         if len(scoring) < 2:
-            return None
+            return {"ok": False, "reason": incoming_reason or "varga_insufficient_scoring"}
         by_class.setdefault("no", dict(VARGA_NONE_STYLE_OPTION))
         if "yes" not in by_class or "weak_yes" not in by_class:
-            return None
+            return {"ok": False, "reason": "varga_missing_weak_yes"}
     else:
         catalog = QUALITY_STYLE_OPTIONS if kind == "event_quality" else EXISTENCE_STYLE_OPTIONS
         for option in catalog:
@@ -84,32 +169,50 @@ def complete_style_options(
             by_class[option["answer_class"]] = option
     ordered: list[dict[str, str]] = []
     seen: set[str] = set()
-    for answer_class in ANSWER_CLASSES:
+    for index, answer_class in enumerate(ANSWER_CLASSES):
         option = by_class.get(answer_class)
         if not option:
-            return None
+            return {"ok": False, "reason": "not_renderable"}
         label = option["label"]
         if label in seen and option.get("sign"):
             label = f"{label}（{option['sign']}）"
         if label in seen:
-            label = f"{label}·{answer_class}"
+            label = f"{option['label']}·{index + 1}"
         seen.add(label)
         ordered.append({**option, "label": label})
     labels = {item["label"] for item in ordered}
     classes = {item["answer_class"] for item in ordered}
-    if len(ordered) != 4 or labels != {item["label"] for item in ordered} or classes != set(ANSWER_CLASSES):
-        return None
-    if len(labels) != 4:
-        return None
-    return ordered
+    if (
+        len(ordered) != 4
+        or len(labels) != 4
+        or classes != set(ANSWER_CLASSES)
+        or any(_ANSWER_CLASS_SUFFIX.search(item["label"]) for item in ordered)
+    ):
+        return {"ok": False, "reason": "not_renderable"}
+    return {"ok": True, "options": ordered}
 
 
-def is_renderable_probe(probe: dict[str, Any]) -> bool:
+def completed_style_options(
+    choice_kind: Any,
+    style_options: Sequence[Any] | None = None,
+) -> list[dict[str, str]] | None:
+    result = complete_style_options(choice_kind, style_options)
+    if result.get("ok"):
+        return result.get("options")  # type: ignore[return-value]
+    return None
+
+
+def is_renderable_probe(probe: dict[str, Any]) -> ProbeRenderOk | ProbeRenderErr:
     gain = probe.get("information_gain")
     if not isinstance(gain, (int, float)) or gain <= 0:
-        return False
+        return {"ok": False, "reason": "zero_gain"}
     candidate_ids = probe.get("candidate_ids") or []
     outcomes = probe.get("expected_outcomes") or []
-    if len(candidate_ids) < 2 or len(outcomes) < 2:
-        return False
-    return complete_style_options(probe.get("choice_kind"), probe.get("style_options")) is not None
+    if len(candidate_ids) < 2:
+        return {"ok": False, "reason": "insufficient_candidates"}
+    if len(outcomes) < 2:
+        return {"ok": False, "reason": "insufficient_outcomes"}
+    completed = complete_style_options(probe.get("choice_kind"), probe.get("style_options"))
+    if not completed.get("ok"):
+        return {"ok": False, "reason": str(completed.get("reason") or "not_renderable")}
+    return {"ok": True}
diff --git a/tests/test_probe_question_contract.py b/tests/test_probe_question_contract.py
index 1c1a6121..c42e72d8 100644
--- a/tests/test_probe_question_contract.py
+++ b/tests/test_probe_question_contract.py
@@ -6,45 +6,68 @@ from scripts.rectification.probe_question_contract import (
     ANSWER_CLASSES,
     EXISTENCE_STYLE_OPTIONS,
     QUALITY_STYLE_OPTIONS,
+    canonical_probe_question_contract_json,
     complete_style_options,
     is_renderable_probe,
+    load_probe_question_contract_golden,
 )
 
 
 class ProbeQuestionContractTests(unittest.TestCase):
     def test_existence_completes_four_options(self) -> None:
         completed = complete_style_options("existence")
-        self.assertEqual(completed, [dict(item) for item in EXISTENCE_STYLE_OPTIONS])
+        self.assertTrue(completed["ok"])
+        self.assertEqual(completed.get("options"), [dict(item) for item in EXISTENCE_STYLE_OPTIONS])
 
     def test_quality_covers_unsure(self) -> None:
         completed = complete_style_options("event_quality")
-        self.assertEqual(completed, [dict(item) for item in QUALITY_STYLE_OPTIONS])
-        self.assertEqual({item["answer_class"] for item in completed or []}, set(ANSWER_CLASSES))
+        self.assertTrue(completed["ok"])
+        self.assertEqual(completed.get("options"), [dict(item) for item in QUALITY_STYLE_OPTIONS])
+        self.assertEqual({item["answer_class"] for item in completed.get("options") or []}, set(ANSWER_CLASSES))
 
     def test_varga_style_needs_two_scoring_labels(self) -> None:
-        self.assertIsNone(complete_style_options("varga_style", [
+        rejected = complete_style_options("varga_style", [
             {"label": "巨蟹相处主动热情", "answer_class": "yes"},
-        ]))
+        ])
+        self.assertFalse(rejected["ok"])
+        self.assertEqual(rejected.get("reason"), "varga_insufficient_scoring")
         completed = complete_style_options("varga_style", [
             {"label": "巨蟹相处主动热情", "answer_class": "yes", "sign": "巨蟹"},
             {"label": "狮子独立强势", "answer_class": "weak_yes", "sign": "狮子"},
         ])
-        self.assertIsNotNone(completed)
-        assert completed is not None
-        self.assertEqual(len(completed), 4)
-        self.assertEqual(next(item["label"] for item in completed if item["answer_class"] == "no"), "都不是这些特质")
+        self.assertTrue(completed["ok"])
+        options = completed.get("options") or []
+        self.assertEqual(len(options), 4)
+        self.assertEqual(next(item["label"] for item in options if item["answer_class"] == "no"), "都不是这些特质")
 
     def test_clock_copy_is_dropped_and_catalog_fills_existence(self) -> None:
         completed = complete_style_options("existence", [
             {"label": "08:12 左右发生", "answer_class": "yes"},
         ])
-        self.assertEqual(completed[0]["label"], "明确发生且时间吻合")
+        self.assertTrue(completed["ok"])
+        self.assertEqual((completed.get("options") or [])[0]["label"], "明确发生且时间吻合")
 
     def test_unrenderable_varga_probe_is_rejected(self) -> None:
-        self.assertFalse(is_renderable_probe({
+        result = is_renderable_probe({
             "information_gain": 1.2,
             "candidate_ids": ["05:00", "05:04"],
             "expected_outcomes": [{}, {}],
             "choice_kind": "varga_style",
             "style_options": [{"label": "外貌更接近第一种", "answer_class": "yes"}],
-        }))
+        })
+        self.assertFalse(result["ok"])
+        self.assertEqual(result.get("reason"), "forbidden_copy")
+
+    def test_duplicate_labels_uniquify_with_index(self) -> None:
+        completed = complete_style_options("varga_style", [
+            {"label": "相处主动热情", "answer_class": "yes"},
+            {"label": "相处主动热情", "answer_class": "weak_yes"},
+        ])
+        self.assertTrue(completed["ok"])
+        labels = [item["label"] for item in completed.get("options") or []]
+        self.assertIn("相处主动热情·2", labels)
+        self.assertFalse(any("weak_yes" in item or item.endswith("·yes") for item in labels))
+        self.assertEqual(len(set(labels)), 4)
+
+    def test_golden_json_matches_python_payload_bytes(self) -> None:
+        self.assertEqual(canonical_probe_question_contract_json(), load_probe_question_contract_golden())