diff --git a/PROGRESS-rectification-decision-authority-20260831.md b/PROGRESS-rectification-decision-authority-20260831.md
new file mode 100644
index 00000000..e5d323fb
--- /dev/null
+++ b/PROGRESS-rectification-decision-authority-20260831.md
@@ -0,0 +1,173 @@
+# 生时校正决策权威重构进度（2026-08-31）
+
+## 基线与交付边界
+
+- 隔离 worktree：`/Users/jesse/Downloads/Copse/astrology/.worktrees/rectification-decision-authority-20260831`
+- 分支：`codex/rectification-decision-authority-20260831`
+- 基线：`origin/staging` @ `9aebd0474a089ed5bec1fc8e8432d0d85e93ffb6`
+- 2026-08-31 交付前重新执行 `git fetch origin staging --prune`；本地基线与远端 `staging` 仍一致。
+- 本次只交付任务 0、A、B。任务 C、D 尚未开始；不部署，不提升 `main`，不声称真实 authenticated staging flow 已验证。
+
+## 任务 0：不变量门控
+
+实现前先加入五条不变量并运行，五条均红，且失败原因分别落在任务书列出的病灶：
+
+1. TypeScript 能力超过引擎 ceiling。
+2. 证据不足仍允许采用/选择。
+3. 候选并列或未分离仍允许采用。
+4. holdout unavailable 仍允许采用。
+5. public overlay 用本地字段覆盖引擎否决。
+
+A+B 完成后五条全部转绿：`tests 5 / pass 5 / fail 0`。
+
+## 任务 A：停止原因分类化
+
+- 新增三类 `StopClass`：`keep_collecting`、`exhausted`、`user_stopped`。
+- `insufficient_dated_events` 与 `insufficient_domains` 只进入收集流程，不再进入 `completeWithRange()`。
+- 真正耗尽（并列第一、用户不确定度过高）仍可结束为 review-only range。
+- 用户主动停止改变的是“是否继续追问”，不是证据是否达标：允许交付区间，但不放开采用能力。
+- 空候选不再返回无停止原因的 fail-open 状态，而是归入证据不足、继续收集。
+- `decideNextAction()` 与 `decideRectification()` 同步演进，保留既有一致性断言。
+
+## 任务 B：能力标志单一来源与引擎上限
+
+- 新增严格四字段 `EngineCapabilityCeiling`：
+  - `acceptanceAllowed`
+  - `selectionAllowed`
+  - `proposeAllowed`
+  - `confirmationAllowed`
+- `decisionReceipt` 四字段缺失、非 boolean 或字段关系非法时 fail-closed。raw dossier receipt 还会严格校验 `accept_allowed` / `confirm_allowed` alias 与 canonical 字段一致，并校验 `display_allowed` 不得与已允许 selection 的结果冲突。
+- `deliveryCapability()` 成为以下四字段的唯一计算点：
+  - `canAdopt`
+  - `selectionAllowed`
+  - `proposeAllowed`
+  - `canConfirmExactMinute`
+- 本地证据、coverage、holdout、separation 门与引擎 ceiling 取交集；TypeScript 只能收紧，不能放宽。
+- `overlayPublicDecision()` 对四个门禁字段取本地结果与 receipt ceiling 的逻辑与，保留候选投影不一致时的 fail-closed。
+- `v9/engine-client.ts` 扩展返回四个引擎能力字段。
+- `v9/decision-from-dossier.ts` 三个调用点、`core/decide-next-action.ts`、`v9/method-followup.ts` 已逐一处理。
+- `method-followup.ts` 的 helper 不参与生产交付，只用于问题流程，因此显式传关闭 ceiling；流程走向仍可 collect/discriminate，不会因四个交付能力全 false 而静默。
+- `v9/answer-choice.ts` 的采用 narration 改为绑定最终能力 `can_offer_range && can_adopt`，避免 `ready_to_adopt` 丢失同回合采用载体。
+- `v9/turn-decision.ts` 继续写入 `decision.selectionAllowed`；该字段现在已是 `deliveryCapability()` 的最终结果，无另行判门。
+- `frontend/src/lib/rectification-agentic/rectification-agentic/session.ts` 在 `frontend/src` 下无生产 import，属于非活跃 legacy 路径，本轮不改。
+- `decideConversationalSession()` 仍未接入生产路径；既有“生产工具不得调用它”的测试约束未解除。
+
+## B-1 grep 自证
+
+以下六个分支函数内，四个能力字段均无 boolean 字面量赋值：
+
+```text
+collect: OK
+discriminate: OK
+offerRangeWithoutAdopt: OK
+holdoutValidation: OK
+completeWithRange: OK
+finish: OK
+```
+
+## 事故输入回归
+
+输入：
+
+- 1 条日期证据
+- 1 个 domain
+- 9 个候选分数：`12,12,12,12,11,11,10,10,10`
+- `trainingGateOpen=false`
+- `methodCoverageAll=false`
+- `snapshotCurrent=true`
+- 引擎 ceiling 四字段全 false
+
+重构前任务书记录：
+
+```json
+{
+  "canAdopt": true,
+  "selectionAllowed": true,
+  "nextAction": "complete_with_range",
+  "stopReason": "insufficient_dated_events"
+}
+```
+
+当前输出：
+
+```json
+{
+  "canAdopt": false,
+  "selectionAllowed": false,
+  "proposeAllowed": false,
+  "canConfirmExactMinute": false,
+  "nextAction": "ask_fact_collection",
+  "sessionOutcome": "collect_evidence",
+  "stopReason": "insufficient_dated_events",
+  "canOfferRange": false
+}
+```
+
+## 既有断言修改配额
+
+按用户批准的新口径：
+
+- 错误行为组：`6 / 6`
+- 修改的既有断言：`10 / 12`
+
+前三条先前未列明的断言为：
+
+1. `frontend/tests/rectification-convergence-budget.test.ts:172`：`canAdopt true → false`；病灶 3，候选未分开且预算耗尽只能交付 review-only range。
+2. `frontend/tests/rectification-convergence-budget.test.ts:412`：label `blocked → user_history_verification_required`；病灶 1，空候选必须分类为证据不足而不是无原因 fail-open。
+3. `frontend/tests/rectification-decide-next-action.test.ts:511`：`sessionOutcome adopt_representative → provisional_range`；病灶 4，holdout unavailable 不能进入采用态。
+
+完整清单（按错误行为组）：
+
+### 组 1：候选未分离却进入采用态（病灶 3）
+
+1. `frontend/tests/rectification-answer-choice.test.ts:608`：`nextAction offer_provisional_range → ready_to_adopt`。原 fixture 为 `16/14`，回答后仍未达到 separation 门却依赖错误采用行为；fixture 已收窄修正为刚好达门的 `18/14` 并通过 holdout，正确采用态是 `ready_to_adopt`。
+2. `frontend/tests/rectification-convergence-budget.test.ts:172`：`canAdopt true → false`。预算耗尽不等于候选已分开。
+
+### 组 2：空候选缺少停止分类（病灶 1）
+
+3. `frontend/tests/rectification-convergence-budget.test.ts:412`：label `blocked → user_history_verification_required`。空候选应继续收集日期证据。
+
+### 组 3：无 holdout 的可信区间被当作可采用（病灶 4）
+
+4. `frontend/tests/rectification-credible-range-projection.test.ts:146`：`nextAction ready_to_adopt → offer_provisional_range`。无 holdout 只能 review-only。
+
+### 组 4：单候选但 holdout unavailable 被当作可采用（病灶 4）
+
+5. `frontend/tests/rectification-decide-next-action.test.ts:511`：`sessionOutcome adopt_representative → provisional_range`。单候选不覆盖独立核对门。
+
+### 组 5：sticky holdout 失去日期精度后仍可采用（病灶 4）
+
+6. `frontend/tests/rectification-holdout-renderable.test.ts:151`：`nextAction ready_to_adopt → offer_provisional_range`。
+7. `frontend/tests/rectification-holdout-renderable.test.ts:153`：`sessionOutcome adopt_representative → provisional_range`。
+8. `frontend/tests/rectification-holdout-renderable.test.ts:157`：`canAdopt true → false`。
+
+三条均由同一错误行为产生：sticky 只保留 holdout 身份，unknown precision 使其不可验证，必须 fail-closed。
+
+### 组 6：用户停止绕过证据与 coverage 门（病灶 2）
+
+9. `frontend/tests/rectification-range-offer-deadend.test.ts:601`：`canAdopt true → false`。用户停止只允许展示区间。
+10. `frontend/tests/rectification-range-offer-deadend.test.ts:608`：`canAdopt true → false`。两条同域日期事件仍不满足独立交付采用门。
+
+`frontend/tests/rectification-holdout-renderable.test.ts` 中 `passed holdout` 的 `canAdopt === true` 保持不变；只补全 receipt fixture。
+
+## 未放宽的门槛
+
+- `MIN_STANDALONE_DATED_EVENTS = 3`
+- `MIN_STANDALONE_DATED_DOMAINS = 2`
+- `MIN_SEPARATION_LEAD = 8`
+- 4 事件 / 3 domain 的 exact-minute confirmation gate
+
+## 本地验收
+
+- `./node_modules/.bin/tsx --test --test-name-pattern='^invariant [1-5]:' tests/rectification-decision-authority.test.ts`：`5/5` 通过。
+- `./node_modules/.bin/tsx --test tests/rectification-answer-choice.test.ts`：`27/27` 通过。
+- `./node_modules/.bin/tsx --test tests/rectification-*.test.ts`：`712/712` 通过，`fail=0`。
+- `./node_modules/.bin/tsc --noEmit`：exit 0。
+- `git diff --check`：exit 0。
+- `.gitea/workflows/**`：无改动。
+
+## 尚未执行
+
+- 任务 C：前端 selection card 的独立 receipt fail-closed。
+- 任务 D：问题槽单一文案源与 Skill `10.0.14` 五处同步升版。
+- staging 部署与真实 authenticated flow 验证。
diff --git a/frontend/src/lib/rectification-agentic/core/decide-next-action.ts b/frontend/src/lib/rectification-agentic/core/decide-next-action.ts
index 7a3f5d33..1b5b932d 100644
--- a/frontend/src/lib/rectification-agentic/core/decide-next-action.ts
+++ b/frontend/src/lib/rectification-agentic/core/decide-next-action.ts
@@ -56,8 +56,12 @@ export function decideNextAction(input: DecideNextActionInput): RectificationNex
     holdoutValidation: input.holdoutValidation,
     accepted: input.accepted,
     inferenceCredibleRange: input.inferenceCredibleRange,
-    engineAcceptAllowed: input.selectionAllowed,
-    engineProposeAllowed: input.proposeAllowed,
+    engineCeiling: {
+      acceptanceAllowed: input.selectionAllowed === true,
+      selectionAllowed: input.selectionAllowed === true,
+      proposeAllowed: input.proposeAllowed === true,
+      confirmationAllowed: input.confirmationAllowed === true,
+    },
     inferenceRounds: input.inferenceRounds,
     effectiveAnswerCount: input.effectiveAnswerCount,
     plateauRounds: input.plateauRounds,
diff --git a/frontend/src/lib/rectification-agentic/core/rectification-decision.ts b/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
index cad493ff..fa4037c1 100644
--- a/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
+++ b/frontend/src/lib/rectification-agentic/core/rectification-decision.ts
@@ -38,6 +38,61 @@ export type EvidenceStopReason =
   | "tied_first"
   | "user_uncertainty_too_high";
 
+export type StopClass =
+  | Readonly<{ kind: "keep_collecting"; reason: "insufficient_dated_events" | "insufficient_domains" }>
+  | Readonly<{ kind: "exhausted"; reason: "tied_first" | "user_uncertainty_too_high" }>
+  | Readonly<{ kind: "user_stopped" }>;
+
+export type EngineCapabilityCeiling = Readonly<{
+  acceptanceAllowed: boolean;
+  selectionAllowed: boolean;
+  proposeAllowed: boolean;
+  confirmationAllowed: boolean;
+}>;
+
+type DeliveryCapability = Readonly<{
+  canAdopt: boolean;
+  selectionAllowed: boolean;
+  proposeAllowed: boolean;
+  canConfirmExactMinute: boolean;
+}>;
+
+const CLOSED_ENGINE_CAPABILITY_CEILING: EngineCapabilityCeiling = {
+  acceptanceAllowed: false,
+  selectionAllowed: false,
+  proposeAllowed: false,
+  confirmationAllowed: false,
+};
+
+export function engineCapabilityCeilingFromReceipt(value: unknown): EngineCapabilityCeiling {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    return CLOSED_ENGINE_CAPABILITY_CEILING;
+  }
+  const row = value as Readonly<Record<string, unknown>>;
+  const acceptanceAllowed = row.acceptance_allowed;
+  const selectionAllowed = row.selection_allowed;
+  const proposeAllowed = row.propose_allowed;
+  const confirmationAllowed = row.confirmation_allowed;
+  if (
+    typeof acceptanceAllowed !== "boolean"
+    || typeof selectionAllowed !== "boolean"
+    || typeof proposeAllowed !== "boolean"
+    || typeof confirmationAllowed !== "boolean"
+    || acceptanceAllowed !== selectionAllowed
+    || (row.accept_allowed !== undefined
+      && (typeof row.accept_allowed !== "boolean" || row.accept_allowed !== selectionAllowed))
+    || (row.confirm_allowed !== undefined
+      && (typeof row.confirm_allowed !== "boolean" || row.confirm_allowed !== confirmationAllowed))
+    || (row.display_allowed !== undefined
+      && (typeof row.display_allowed !== "boolean" || (selectionAllowed && !row.display_allowed)))
+    || (proposeAllowed && !selectionAllowed)
+    || (confirmationAllowed && !selectionAllowed)
+  ) {
+    return CLOSED_ENGINE_CAPABILITY_CEILING;
+  }
+  return { acceptanceAllowed, selectionAllowed, proposeAllowed, confirmationAllowed };
+}
+
 export const RECTIFICATION_TERMINATION_COPY = "当前最优结果是候选时间段，而不是已经确认的唯一出生分钟。临时代表时间仅用于下一轮验证与比较。";
 
 /** Standalone range-delivery floor; the exact-minute confirmation gate remains 4/3. */
@@ -98,8 +153,7 @@ export type DecideRectificationInput = Readonly<{
   holdoutValidation?: HoldoutValidationStatus;
   accepted?: boolean;
   inferenceCredibleRange?: readonly [string, string] | null;
-  engineAcceptAllowed?: boolean;
-  engineProposeAllowed?: boolean;
+  engineCeiling: EngineCapabilityCeiling;
   datedMethodCollectOpen?: boolean;
   /** Server-persisted inference counters; never infer these from chat text. */
   inferenceRounds?: number;
@@ -111,28 +165,57 @@ export type DecideRectificationInput = Readonly<{
   userUncertaintyHigh?: boolean;
 }>;
 
-function evidenceStopReason(
+function classifyStop(
   input: DecideRectificationInput,
   separation: CandidateSeparation,
-): EvidenceStopReason | null {
-  if (separation.ranked.length === 0) return null;
+): StopClass | null {
   if (
     input.datedEventCount !== undefined
     && input.datedEventCount < MIN_STANDALONE_DATED_EVENTS
   ) {
-    return "insufficient_dated_events";
+    return { kind: "keep_collecting", reason: "insufficient_dated_events" };
   }
   if (
     input.datedDomainCount !== undefined
     && input.datedDomainCount < MIN_STANDALONE_DATED_DOMAINS
   ) {
-    return "insufficient_domains";
+    return { kind: "keep_collecting", reason: "insufficient_domains" };
+  }
+  if (separation.ranked.length === 0 && !input.discriminatorProbe) {
+    return { kind: "keep_collecting", reason: "insufficient_dated_events" };
+  }
+  if (input.userStopped === true) return { kind: "user_stopped" };
+  if (separation.tiedForFirst) return { kind: "exhausted", reason: "tied_first" };
+  if (input.userUncertaintyHigh === true) {
+    return { kind: "exhausted", reason: "user_uncertainty_too_high" };
   }
-  if (separation.tiedForFirst) return "tied_first";
-  if (input.userUncertaintyHigh === true) return "user_uncertainty_too_high";
   return null;
 }
 
+function deliveryCapability(input: {
+  stopClass: StopClass | null;
+  separation: CandidateSeparation;
+  holdout: HoldoutValidationStatus;
+  engineCeiling: EngineCapabilityCeiling;
+  confirmationAllowed: boolean;
+  coverageBlocks: boolean;
+}): DeliveryCapability {
+  const locallySelectable = input.separation.ranked.length > 0
+    && !input.coverageBlocks
+    && input.stopClass?.kind !== "keep_collecting"
+    && input.stopClass?.kind !== "exhausted"
+    && input.separation.sufficient
+    && input.holdout === "passed";
+  return {
+    canAdopt: locallySelectable && input.engineCeiling.acceptanceAllowed,
+    selectionAllowed: locallySelectable && input.engineCeiling.selectionAllowed,
+    proposeAllowed: locallySelectable && input.engineCeiling.proposeAllowed,
+    canConfirmExactMinute: locallySelectable
+      && input.confirmationAllowed
+      && input.engineCeiling.confirmationAllowed,
+  };
+}
+
 export function decideRectification(input: DecideRectificationInput): RectificationDecision {
   const separation = evaluateCandidateSeparation(input.candidateScores);
   const probe = input.discriminatorProbe ?? null;
@@ -144,9 +227,63 @@ export function decideRectification(input: DecideRectificationInput): Rectificat
     ?? (separation.representativeTime
       ? [separation.representativeTime, separation.representativeTime] as const
       : null);
+  const stopClass = classifyStop(input, separation);
+  const stopReason = stopClass && "reason" in stopClass ? stopClass.reason : null;
+  const canDiscriminateDespiteCoverage = Boolean(probe)
+    && !separation.sufficient
+    && input.trainingGateOpen !== false;
+  const coverageBlocks = (!input.methodCoverageAll && !canDiscriminateDespiteCoverage)
+    || input.trainingGateOpen === false;
+  const capability = deliveryCapability({
+    stopClass,
+    separation,
+    holdout,
+    engineCeiling: input.engineCeiling,
+    confirmationAllowed,
+    coverageBlocks,
+  });
 
-  const stopReason = evidenceStopReason(input, separation);
-
+  if (input.snapshotCurrent === false) {
+    if (probe && !userStopped && input.trainingGateOpen !== false) {
+      return discriminateOrExhaust(input, separation, holdout, range, probe, capability, stopReason);
+    }
+    return collect(separation, holdout, range, probe, capability, stopReason);
+  }
+  if (userStopped && separation.ranked.length > 0) {
+    return completeWithRange(separation, holdout, range, "user_stopped", capability);
+  }
+  if (coverageBlocks) {
+    const engineOffers = input.engineCeiling.acceptanceAllowed
+      || input.engineCeiling.proposeAllowed;
+    if (
+      stopClass?.kind !== "keep_collecting"
+      && input.trainingGateOpen !== false
+      && separation.ranked.length > 0
+      && !probe
+      && engineOffers
+      && input.datedMethodCollectOpen !== true
+    ) {
+      return offerRangeWithoutAdopt(separation, holdout, range, capability);
+    }
+    return collect(separation, holdout, range, probe, capability, stopReason);
+  }
+  if (stopClass?.kind === "keep_collecting") {
+    return collect(separation, holdout, range, probe, capability, stopClass.reason);
+  }
+  if (stopClass?.kind === "exhausted" && stopClass.reason === "user_uncertainty_too_high") {
+    return completeWithRange(separation, holdout, range, "exhausted", capability, stopClass.reason);
+  }
+  if (!separation.sufficient) {
+    if (probe) {
+      return discriminateOrExhaust(input, separation, holdout, range, probe, capability, stopReason);
+    }
+    return stopClass?.kind === "exhausted"
+      ? completeWithRange(separation, holdout, range, "exhausted", capability, stopClass.reason)
+      : completeWithRange(separation, holdout, range, "offer", capability);
+  }
+  if (stopClass?.kind === "exhausted") {
+    return completeWithRange(separation, holdout, range, "exhausted", capability, stopClass.reason);
+  }
   if (input.accepted) {
     return finish(confirmationAllowed ? "awaiting_confirmation" : "adopt_representative", {
       input,
@@ -154,7 +291,7 @@ export function decideRectification(input: DecideRectificationInput): Rectificat
       holdout,
       range,
       probe: null,
-      canConfirmExactMinute: confirmationAllowed,
+      capability,
     });
   }
   if (confirmationAllowed) {
@@ -164,78 +301,20 @@ export function decideRectification(input: DecideRectificationInput): Rectificat
       holdout,
       range,
       probe: null,
-      canConfirmExactMinute: true,
+      capability,
     });
   }
-  if (userStopped && input.candidateScores.length > 0) {
-    return completeWithRange(separation, holdout, range, "user_stopped");
-  }
-  if (input.snapshotCurrent === false) {
-    if (probe && !userStopped && input.trainingGateOpen !== false) {
-      return discriminateOrExhaust(
-        input,
-        separation,
-        holdout,
-        range,
-        probe,
-      );
-    }
-    if (!(userStopped && input.candidateScores.length > 0)) {
-      return collect(separation, holdout, range, probe);
-    }
-  }
-  if (stopReason) {
-    return completeWithRange(separation, holdout, range, "exhausted", stopReason);
-  }
-  const canDiscriminateDespiteCoverage = Boolean(probe)
-    && !separation.sufficient
-    && input.trainingGateOpen !== false;
-  const coverageBlocks = (!input.methodCoverageAll && !canDiscriminateDespiteCoverage)
-    || input.trainingGateOpen === false;
-  if (coverageBlocks) {
-    const trainingOpen = input.trainingGateOpen !== false;
-    const engineOffers = input.engineAcceptAllowed === true || input.engineProposeAllowed === true;
-    if (
-      trainingOpen
-      && input.candidateScores.length > 0
-      && !probe
-      && engineOffers
-      && input.datedMethodCollectOpen !== true
-    ) {
-      return offerRangeWithoutAdopt(separation, holdout, range);
-    }
-    return collect(separation, holdout, range, probe);
-  }
-  if (!separation.sufficient) {
-    if (probe && !userStopped) {
-      return discriminateOrExhaust(input, separation, holdout, range, probe);
-    }
-    return completeWithRange(separation, holdout, range, userStopped ? "user_stopped" : "offer");
-  }
-  if (holdout === "not_started" && !userStopped) {
-    return holdoutValidation(separation, range);
+  if (holdout === "not_started") {
+    return holdoutValidation(separation, range, capability);
   }
   if (holdout === "failed") {
-    if (probe && !userStopped) {
-      return discriminateOrExhaust(input, separation, holdout, range, probe);
+    if (probe) {
+      return discriminateOrExhaust(input, separation, holdout, range, probe, capability);
     }
-    return completeWithRange(separation, holdout, range, "exhausted");
+    return completeWithRange(separation, holdout, range, "exhausted", capability);
   }
   if (holdout === "unavailable") {
-    if (userStopped) {
-      return completeWithRange(separation, holdout, range, "user_stopped");
-    }
-    return finish("adopt_representative", {
-      input,
-      separation,
-      holdout,
-      range,
-      probe: null,
-      canConfirmExactMinute: false,
-    });
-  }
-  if (userStopped && holdout !== "passed") {
-    return completeWithRange(separation, holdout, range, "user_stopped");
+    return offerRangeWithoutAdopt(separation, holdout, range, capability);
   }
   return finish("adopt_representative", {
     input,
@@ -243,7 +322,7 @@ export function decideRectification(input: DecideRectificationInput): Rectificat
     holdout,
     range,
     probe: null,
-    canConfirmExactMinute: false,
+    capability,
   });
 }
 
@@ -259,11 +338,13 @@ function discriminateOrExhaust(
   holdout: HoldoutValidationStatus,
   range: readonly [string, string] | null,
   probe: CandidateDiscriminatorProbe,
+  capability: DeliveryCapability,
+  stopReason: EvidenceStopReason | null = null,
 ): RectificationDecision {
   if (budgetExhausted(input)) {
-    return completeWithRange(separation, holdout, range, "exhausted");
+    return completeWithRange(separation, holdout, range, "exhausted", capability, stopReason);
   }
-  return discriminate(separation, holdout, range, probe);
+  return discriminate(separation, holdout, range, probe, capability, stopReason);
 }
 
 function collect(
@@ -271,6 +352,8 @@ function collect(
   holdout: HoldoutValidationStatus,
   range: readonly [string, string] | null,
   probe: CandidateDiscriminatorProbe | null,
+  capability: DeliveryCapability,
+  stopReason: EvidenceStopReason | null = null,
 ): RectificationDecision {
   return {
     phase: "event_collection",
@@ -278,10 +361,7 @@ function collect(
     sessionOutcome: "collect_evidence",
     resultStatus: "insufficient_evidence",
     canOfferRange: false,
-    canAdopt: false,
-    canConfirmExactMinute: false,
-    selectionAllowed: false,
-    proposeAllowed: false,
+    ...capability,
     precisionStage: "collect_events",
     activeFocusPolicy: "keep",
     completionStatus: null,
@@ -292,6 +372,7 @@ function collect(
     probe,
     holdoutValidation: holdout,
     droppedProbes: [],
+    stopReason,
   };
 }
 
@@ -299,6 +380,7 @@ function offerRangeWithoutAdopt(
   separation: CandidateSeparation,
   holdout: HoldoutValidationStatus,
   range: readonly [string, string] | null,
+  capability: DeliveryCapability,
 ): RectificationDecision {
   return {
     phase: "discrimination",
@@ -306,10 +388,7 @@ function offerRangeWithoutAdopt(
     sessionOutcome: "provisional_range",
     resultStatus: "insufficient_evidence",
     canOfferRange: true,
-    canAdopt: false,
-    canConfirmExactMinute: false,
-    selectionAllowed: false,
-    proposeAllowed: false,
+    ...capability,
     precisionStage: "theme_refine",
     activeFocusPolicy: "close",
     completionStatus: null,
@@ -361,6 +440,8 @@ function discriminate(
   holdout: HoldoutValidationStatus,
   range: readonly [string, string] | null,
   probe: CandidateDiscriminatorProbe,
+  capability: DeliveryCapability,
+  stopReason: EvidenceStopReason | null = null,
 ): RectificationDecision {
   return {
     phase: "discrimination",
@@ -368,10 +449,7 @@ function discriminate(
     sessionOutcome: "discriminate_candidates",
     resultStatus: "discriminating",
     canOfferRange: false,
-    canAdopt: false,
-    canConfirmExactMinute: false,
-    selectionAllowed: false,
-    proposeAllowed: false,
+    ...capability,
     precisionStage: "theme_refine",
     activeFocusPolicy: "keep",
     completionStatus: null,
@@ -382,12 +460,14 @@ function discriminate(
     probe,
     holdoutValidation: holdout,
     droppedProbes: [],
+    ...(stopReason ? { stopReason } : {}),
   };
 }
 
 function holdoutValidation(
   separation: CandidateSeparation,
   range: readonly [string, string] | null,
+  capability: DeliveryCapability,
 ): RectificationDecision {
   return {
     phase: "holdout_validation",
@@ -395,10 +475,7 @@ function holdoutValidation(
     sessionOutcome: "validate_holdout",
     resultStatus: "discriminating",
     canOfferRange: false,
-    canAdopt: false,
-    canConfirmExactMinute: false,
-    selectionAllowed: false,
-    proposeAllowed: false,
+    ...capability,
     precisionStage: "theme_refine",
     activeFocusPolicy: "keep",
     completionStatus: null,
@@ -417,6 +494,7 @@ function completeWithRange(
   holdout: HoldoutValidationStatus,
   range: readonly [string, string] | null,
   kind: "user_stopped" | "offer" | "exhausted",
+  capability: DeliveryCapability,
   stopReason: EvidenceStopReason | null = null,
 ): RectificationDecision {
   const userStopped = kind === "user_stopped";
@@ -433,10 +511,7 @@ function completeWithRange(
     sessionOutcome,
     resultStatus: "completed_with_range",
     canOfferRange: true,
-    canAdopt: true,
-    canConfirmExactMinute: false,
-    selectionAllowed: true,
-    proposeAllowed: true,
+    ...capability,
     precisionStage: "ready_to_adopt",
     activeFocusPolicy: "close",
     completionStatus: userStopped ? "provisional_range_user_stopped" : null,
@@ -460,17 +535,17 @@ function finish(
     holdout: HoldoutValidationStatus;
     range: readonly [string, string] | null;
     probe: CandidateDiscriminatorProbe | null;
-    canConfirmExactMinute: boolean;
+    capability: DeliveryCapability;
   },
 ): RectificationDecision {
-  const completionStatus: CompletionStatus | null = input.canConfirmExactMinute && input.input.accepted
+  const completionStatus: CompletionStatus | null = input.capability.canConfirmExactMinute && input.input.accepted
     ? "exact_minute_confirmed"
     : input.holdout === "passed"
       ? "validated_range"
       : input.input.userStopped === true
         ? "provisional_range_user_stopped"
         : null;
-  const kind = input.canConfirmExactMinute
+  const kind = input.capability.canConfirmExactMinute
     ? (input.input.accepted ? "exact_minute_confirmed" : "awaiting_confirmation")
     : input.holdout === "passed"
       ? "validated_range"
@@ -483,10 +558,7 @@ function finish(
       ? "converged"
       : "completed_with_range",
     canOfferRange: true,
-    canAdopt: true,
-    canConfirmExactMinute: input.canConfirmExactMinute,
-    selectionAllowed: true,
-    proposeAllowed: true,
+    ...input.capability,
     precisionStage: "ready_to_adopt",
     activeFocusPolicy: "close",
     completionStatus,
diff --git a/frontend/src/lib/rectification-agentic/v9/answer-choice.ts b/frontend/src/lib/rectification-agentic/v9/answer-choice.ts
index 951c0024..052c0990 100644
--- a/frontend/src/lib/rectification-agentic/v9/answer-choice.ts
+++ b/frontend/src/lib/rectification-agentic/v9/answer-choice.ts
@@ -679,7 +679,7 @@ ${nextInterview.hostNarration}`
       nextInterviewPersisted = true;
     }
   }
-  const adoptionNarration = nextAction.type === "offer_provisional_range" && nextAction.can_adopt
+  const adoptionNarration = nextAction.can_offer_range && nextAction.can_adopt
     ? `${nonConvergingRangeNarration({
       credibleRange: nextAction.credible_range,
       representativeTime: nextAction.representative_time,
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 63f54e3b..f7871203 100644
--- a/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts
+++ b/frontend/src/lib/rectification-agentic/v9/decision-from-dossier.ts
@@ -18,6 +18,7 @@ import {
 } from "../core/candidate-contrast-packet.ts";
 import {
   decideRectification,
+  engineCapabilityCeilingFromReceipt,
   publicDecisionFields,
   type HoldoutValidationStatus,
   type RectificationDecision,
@@ -522,9 +523,7 @@ export function decideFromDossier(
       holdoutValidation: holdoutStatusFromInference(inference, oosBlindPrompts),
       accepted: Boolean(dossier.case.acceptedTime),
       inferenceCredibleRange: inference?.credible_range ?? null,
-      engineAcceptAllowed: latest?.selectionAllowed === true
-        || latest?.decisionReceipt?.accept_allowed === true,
-      engineProposeAllowed: latest?.decisionReceipt?.propose_allowed === true,
+      engineCeiling: engineCapabilityCeilingFromReceipt(latest?.decisionReceipt ?? null),
       datedMethodCollectOpen: datedMethodCollectOpen(collecting.methods),
       ...decisionBudget,
       ...evidenceStops,
@@ -553,6 +552,7 @@ export function decideAfterInferenceChange(input: {
       trainingGateOpen: trainingScoreableGate(input.dossier.evidence).open,
       candidateScores: [],
       userStopped: input.userStopped,
+      engineCeiling: engineCapabilityCeilingFromReceipt(input.dossier.latestResult?.decisionReceipt ?? null),
       ...decisionBudgetFromInference(null),
       ...evidenceStops,
     });
@@ -593,9 +593,7 @@ export function decideAfterInferenceChange(input: {
       inferenceCredibleRange: input.state.credible_range,
       userStopped: input.userStopped,
       accepted: Boolean(input.dossier.case.acceptedTime),
-      engineAcceptAllowed: input.dossier.latestResult?.selectionAllowed === true
-        || input.dossier.latestResult?.decisionReceipt?.accept_allowed === true,
-      engineProposeAllowed: input.dossier.latestResult?.decisionReceipt?.propose_allowed === true,
+      engineCeiling: engineCapabilityCeilingFromReceipt(input.dossier.latestResult?.decisionReceipt ?? null),
       datedMethodCollectOpen: datedMethodCollectOpen(collecting.methods),
       ...decisionBudgetFromInference(input.state),
       ...evidenceStops,
@@ -616,9 +614,22 @@ export function overlayPublicDecision<T extends object>(
   const fields = publicDecisionFields(decision);
   const projection = authoritativeCandidateProjection(snapshot as DecisionDossier["latestResult"]);
   const inconsistent = !projection.consistent;
+  const ceiling = engineCapabilityCeilingFromReceipt(
+    (snapshot as DecisionDossier["latestResult"])?.decisionReceipt ?? null,
+  );
+  const canAdopt = !inconsistent && fields.can_adopt && ceiling.acceptanceAllowed;
+  const selectionAllowed = !inconsistent && fields.selection_allowed && ceiling.selectionAllowed;
+  const proposeAllowed = !inconsistent && fields.propose_allowed && ceiling.proposeAllowed;
+  const canConfirmExactMinute = !inconsistent
+    && fields.can_confirm_exact_minute
+    && ceiling.confirmationAllowed;
   return {
     ...snapshot,
     ...fields,
+    can_adopt: canAdopt,
+    selection_allowed: selectionAllowed,
+    propose_allowed: proposeAllowed,
+    can_confirm_exact_minute: canConfirmExactMinute,
     ...(projection.fromInference
       ? {
           candidates: projection.candidates,
@@ -628,8 +639,7 @@ export function overlayPublicDecision<T extends object>(
           credible_range: projection.credibleRange,
         }
       : {}),
-    ...(inconsistent ? { can_adopt: false, selection_allowed: false } : {}),
-    selectionAllowed: inconsistent ? false : fields.selection_allowed,
+    selectionAllowed,
     validated: fields.validated,
     completionStatus: fields.completion_status,
   };
diff --git a/frontend/src/lib/rectification-agentic/v9/engine-client.ts b/frontend/src/lib/rectification-agentic/v9/engine-client.ts
index e6a3ffa1..c0a045a3 100644
--- a/frontend/src/lib/rectification-agentic/v9/engine-client.ts
+++ b/frontend/src/lib/rectification-agentic/v9/engine-client.ts
@@ -70,7 +70,9 @@ export type V9EngineScoreResult = Readonly<{
   candidates: readonly V9EngineCandidate[];
   overallConfidence: "low" | "medium" | "high";
   marginPercent: number | null;
+  acceptanceAllowed: boolean;
   selectionAllowed: boolean;
+  proposeAllowed: boolean;
   confirmationAllowed: boolean;
   representativeCandidateId: string | null;
   representativeTime: string | null;
@@ -237,7 +239,9 @@ type ParsedReceipt = Readonly<{
   raw: V9DecisionReceipt;
   eventContractVersion: string;
   policyVersion: string;
+  acceptanceAllowed: boolean;
   selectionAllowed: boolean;
+  proposeAllowed: boolean;
   confirmationAllowed: boolean;
   representativeCandidateId: string | null;
   representativeTime: string | null;
@@ -267,6 +271,7 @@ function readDecisionReceipt(value: unknown, candidates: readonly V9EngineCandid
     || typeof row.display_allowed !== "boolean"
     || typeof row.selection_allowed !== "boolean"
     || typeof row.acceptance_allowed !== "boolean"
+    || typeof row.propose_allowed !== "boolean"
     || typeof row.confirmation_allowed !== "boolean"
     || typeof row.accept_allowed !== "boolean"
     || typeof row.confirm_allowed !== "boolean"
@@ -288,7 +293,6 @@ function readDecisionReceipt(value: unknown, candidates: readonly V9EngineCandid
     || (representativeCandidateId !== null && (!representative || representative.time !== representativeTime))
     || (row.confirmation_allowed === true && row.selection_allowed !== true)
     || (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)
   ) {
@@ -298,7 +302,9 @@ function readDecisionReceipt(value: unknown, candidates: readonly V9EngineCandid
     raw: row,
     eventContractVersion: EVENT_CONTRACT_VERSION,
     policyVersion: row.policy_version,
+    acceptanceAllowed: row.acceptance_allowed,
     selectionAllowed: row.selection_allowed,
+    proposeAllowed: row.propose_allowed,
     confirmationAllowed: row.confirmation_allowed,
     representativeCandidateId,
     representativeTime,
@@ -527,7 +533,9 @@ export async function runV9CandidateScore(input: {
     candidates,
     overallConfidence: receipt.overallConfidence,
     marginPercent: receipt.marginPercent,
+    acceptanceAllowed: receipt.acceptanceAllowed,
     selectionAllowed: receipt.selectionAllowed,
+    proposeAllowed: receipt.proposeAllowed,
     confirmationAllowed: receipt.confirmationAllowed,
     representativeCandidateId: receipt.representativeCandidateId,
     representativeTime: receipt.representativeTime,
diff --git a/frontend/src/lib/rectification-agentic/v9/method-followup.ts b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
index c9bb8fe8..deb0f6e8 100644
--- a/frontend/src/lib/rectification-agentic/v9/method-followup.ts
+++ b/frontend/src/lib/rectification-agentic/v9/method-followup.ts
@@ -1139,8 +1139,14 @@ export function decideConversationalSession(input: {
       : discriminatorFromFollowup(input.nextFollowup),
     holdoutValidation: input.holdoutValidation,
     accepted: input.accepted,
-    engineAcceptAllowed: input.selectionAllowed,
-    engineProposeAllowed: input.proposeAllowed,
+    // This helper is not used by the production V9 delivery path; keep its
+    // delivery ceiling explicit without coupling it to question selection.
+    engineCeiling: {
+      acceptanceAllowed: input.selectionAllowed === true,
+      selectionAllowed: input.selectionAllowed === true,
+      proposeAllowed: input.proposeAllowed === true,
+      confirmationAllowed: input.confirmationAllowed === true,
+    },
     datedMethodCollectOpen: input.methods ? datedMethodCollectOpen(input.methods) : undefined,
     inferenceRounds: input.inferenceRounds,
     effectiveAnswerCount: input.effectiveAnswerCount,
diff --git a/frontend/tests/rectification-answer-choice.test.ts b/frontend/tests/rectification-answer-choice.test.ts
index e197a37c..cb50ce4c 100644
--- a/frontend/tests/rectification-answer-choice.test.ts
+++ b/frontend/tests/rectification-answer-choice.test.ts
@@ -26,7 +26,7 @@ import {
   userFacingRunFailure,
   isIncompleteRunBanner,
 } from "../src/lib/rectification-agentic/v9/run-diagnostic.ts";
-import { buildInferenceState } from "../src/lib/rectification-agentic/core/build-state.ts";
+import { applyHoldoutAnswer, buildInferenceState } from "../src/lib/rectification-agentic/core/build-state.ts";
 import { RECTIFICATION_TERMINATION_COPY } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { parseV9CaseDossier, RectificationToolServiceError } from "../src/lib/rectification-agentic/v9/tool-service.ts";
 import {
@@ -425,11 +425,11 @@ function familyCollectDossier() {
 }
 
 function adoptionInference() {
-  return buildInferenceState({
+  return applyHoldoutAnswer(buildInferenceState({
     range_start: "04:45",
     range_end: "05:15",
     candidates: [
-      { id: "05:00", time: "05:00", relative_support: 16 },
+      { id: "05:00", time: "05:00", relative_support: 18 },
       { id: "05:10", time: "05:10", relative_support: 14 },
     ],
     events: [
@@ -439,7 +439,7 @@ function adoptionInference() {
       { id: "e4", domain: "relationship", year: 2024, precision: "day" },
     ],
     probes: [RELOCATION_2015_PROBE],
-  });
+  }), "yes");
 }
 
 function adoptionDossier() {
@@ -466,7 +466,13 @@ function adoptionDossier() {
     latestResult: candidateSnapshotFixture({
       selectionAllowed: true,
       representativeTime: "05:00",
-      decisionReceipt: { inference_state: inference },
+      decisionReceipt: {
+        acceptance_allowed: true,
+        selection_allowed: true,
+        propose_allowed: true,
+        confirmation_allowed: false,
+        inference_state: inference,
+      },
     }),
     conversationSummary: conversationSummaryFixture({
       declinedSkippedTopics: [{ target_domain: "family", status: "skipped" }],
@@ -598,7 +604,8 @@ test("last structured choice emits the adoption range and persists the same narr
     optionId: "A",
     expectedRevision: adoptionInference().revision,
   });
-  assert.equal(applied.nextAction.type, "offer_provisional_range");
+  // Formerly offer_provisional_range: that depended on a 16/14 unresolved fixture being adoptable.
+  assert.equal(applied.nextAction.type, "ready_to_adopt");
   assert.equal(applied.nextAction.can_adopt, true);
   assert.match(applied.narration, /当前可信区间是/);
   assert.match(applied.narration, /代表分钟/);
diff --git a/frontend/tests/rectification-collect-stall.test.ts b/frontend/tests/rectification-collect-stall.test.ts
index e721cace..8b4aa1fb 100644
--- a/frontend/tests/rectification-collect-stall.test.ts
+++ b/frontend/tests/rectification-collect-stall.test.ts
@@ -820,9 +820,11 @@ function liveCaseDossier(): DecisionDossier {
       })),
       representativeTime: state.representative_time,
       decisionReceipt: {
+        acceptance_allowed: true,
         accept_allowed: true,
         propose_allowed: true,
         selection_allowed: true,
+        confirmation_allowed: false,
         inference_state: state,
       },
     },
diff --git a/frontend/tests/rectification-confirmation-gate.test.ts b/frontend/tests/rectification-confirmation-gate.test.ts
index 9f390bfc..6996982b 100644
--- a/frontend/tests/rectification-confirmation-gate.test.ts
+++ b/frontend/tests/rectification-confirmation-gate.test.ts
@@ -19,6 +19,7 @@ import {
 import { PUBLIC_RECTIFICATION_TOOLS } from "../src/lib/rectification-agentic/v9/public-receipt.ts";
 import { safeToolErrorCode, RectificationToolServiceError } from "../src/lib/rectification-agentic/v9/tool-service.ts";
 import {
+  OPEN_ENGINE_CAPABILITY_CEILING,
   CASE_ID,
   CANDIDATE_ID,
   RESULT_ID,
@@ -138,6 +139,7 @@ const PLATEAU = [
 
 function collectDecision(candidates: readonly { time: string; relativeSupport: number }[]) {
   return decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: candidates.map((item) => ({ time: item.time, score: item.relativeSupport })),
diff --git a/frontend/tests/rectification-convergence-budget.test.ts b/frontend/tests/rectification-convergence-budget.test.ts
index 10f851e4..6b7b3e4a 100644
--- a/frontend/tests/rectification-convergence-budget.test.ts
+++ b/frontend/tests/rectification-convergence-budget.test.ts
@@ -1,6 +1,8 @@
 import assert from "node:assert/strict";
 import test from "node:test";
 
+import { OPEN_ENGINE_CAPABILITY_CEILING } from "./rectification-v9-test-support.ts";
+
 import { EFFECTIVE_ANSWER_SAFETY_CAP } from "../src/lib/birth-time-dynamic-stop-policy.ts";
 import {
   DEFAULT_MAX_DISCRIMINATION_ROUNDS,
@@ -50,6 +52,7 @@ const PROBE: CandidateDiscriminatorProbe = {
 };
 
 const BASE_INPUT = {
+  engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
   methodCoverageAll: true,
   trainingGateOpen: true,
   candidateScores: [
@@ -165,7 +168,8 @@ test("exhausted discrimination still delivers the credible candidate range", ()
   assert.equal(decision.resultStatus, "completed_with_range");
   assert.equal(decision.sessionOutcome, "completed_with_range");
   assert.equal(decision.canOfferRange, true);
-  assert.equal(decision.canAdopt, true);
+  // 原值是 true；候选未分开且区分预算耗尽只能交付 review-only range，不能采用。
+  assert.equal(decision.canAdopt, false);
   assert.deepEqual(decision.credibleRange, ["05:00", "05:07"]);
 });
 
@@ -198,19 +202,24 @@ test("additional score evidence never widens the credible range", () => {
   assert.ok(width(after.credibleRange) <= width(before.credibleRange));
 });
 
-test("evidence-state stops complete with a usable range and the fixed termination copy", () => {
+test("insufficient standalone evidence keeps collecting", () => {
+  for (const item of [
+    { reason: "insufficient_dated_events" as const, input: { datedEventCount: 2, datedDomainCount: 2 } },
+    { reason: "insufficient_domains" as const, input: { datedEventCount: 3, datedDomainCount: 1 } },
+  ]) {
+    const decision = decideRectification({ ...BASE_INPUT, ...item.input });
+    assert.equal(decision.nextAction, "ask_fact_collection");
+    assert.equal(decision.sessionOutcome, "collect_evidence");
+    assert.equal(decision.canOfferRange, false);
+    assert.equal(decision.stopReason, item.reason);
+  }
+});
+
+test("exhausted evidence-state stops complete with a usable range and the fixed termination copy", () => {
   const cases: readonly Readonly<{
     reason: EvidenceStopReason;
     input: Partial<Parameters<typeof decideRectification>[0]>;
   }>[] = [
-    {
-      reason: "insufficient_dated_events",
-      input: { datedEventCount: 2, datedDomainCount: 2 },
-    },
-    {
-      reason: "insufficient_domains",
-      input: { datedEventCount: 3, datedDomainCount: 1 },
-    },
     {
       reason: "tied_first",
       input: {
@@ -221,6 +230,7 @@ test("evidence-state stops complete with a usable range and the fixed terminatio
           { time: "05:06", score: 34 },
           { time: "05:07", score: 32 },
         ],
+        discriminatorProbe: null,
       },
     },
     {
@@ -393,11 +403,13 @@ test("dossier and post-inference decisions share the half-uncertain stop rule",
 
 test("rectification label ladder follows evidence state and explicit adapter support", () => {
   const blocked = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: [],
   });
-  assert.equal(rectificationLabel({ decision: blocked }), "blocked");
+  // 原值是 blocked；空候选现在被分类为证据不足，不能继续无原因地 fail-open。
+  assert.equal(rectificationLabel({ decision: blocked }), "user_history_verification_required");
 
   const stopped = decideRectification({
     ...BASE_INPUT,
diff --git a/frontend/tests/rectification-credible-range-projection.test.ts b/frontend/tests/rectification-credible-range-projection.test.ts
index dbf59e2d..1dac685a 100644
--- a/frontend/tests/rectification-credible-range-projection.test.ts
+++ b/frontend/tests/rectification-credible-range-projection.test.ts
@@ -94,7 +94,13 @@ function producedSnapshot(
       candidates: persisted,
       representativeTime: state.representative_time,
       evidenceLedgerFingerprint: evidenceLedgerFingerprint(COVERAGE_EVIDENCE as never),
-      decisionReceipt: { inference_state: state },
+      decisionReceipt: {
+        acceptance_allowed: true,
+        selection_allowed: true,
+        propose_allowed: true,
+        confirmation_allowed: false,
+        inference_state: state,
+      },
     },
   };
 }
@@ -128,7 +134,7 @@ test("producer 58/42 lead keeps both candidates and can close without opening th
   assert.notEqual(decision.sessionOutcome, "exact_minute_confirmed");
 });
 
-test("producer 58/42 with no holdout is ready_to_adopt, not a unique minute", () => {
+test("producer 58/42 with no holdout remains a review-only range", () => {
   const { latest } = producedSnapshot([
     { time: "05:02", relativeSupport: 58 },
     { time: "04:55", relativeSupport: 42 },
@@ -136,7 +142,9 @@ test("producer 58/42 with no holdout is ready_to_adopt, not a unique minute", ()
   const decision = decideFromDossier(dossierFor(latest));
   assert.equal(authoritativeCandidateProjection(latest).consistent, true);
   assert.equal(decision.separation.sufficient, true);
-  assert.equal(decision.nextAction, "ready_to_adopt");
+  // 原值是 ready_to_adopt；没有 holdout 不能进入采用态，只能展示 review-only range。
+  assert.equal(decision.nextAction, "offer_provisional_range");
+  assert.equal(decision.canAdopt, false);
   assert.equal(decision.canConfirmExactMinute, false);
   assert.notEqual(decision.sessionOutcome, "exact_minute_confirmed");
 });
diff --git a/frontend/tests/rectification-decide-next-action.test.ts b/frontend/tests/rectification-decide-next-action.test.ts
index c13eb6fb..4fe8fb6c 100644
--- a/frontend/tests/rectification-decide-next-action.test.ts
+++ b/frontend/tests/rectification-decide-next-action.test.ts
@@ -2,6 +2,8 @@ import assert from "node:assert/strict";
 import { readFileSync } from "node:fs";
 import test from "node:test";
 
+import { OPEN_ENGINE_CAPABILITY_CEILING } from "./rectification-v9-test-support.ts";
+
 import {
   askedEventProbeKeysFromLedgerEvidence,
   buildCandidateContrastPacket,
@@ -128,12 +130,14 @@ test("unseparated scores still discriminate when training is open and a probe ex
   });
   assert.equal(next.type, "ask_candidate_discriminator");
   assert.equal(decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: true,
     candidateScores: TIED,
     discriminatorProbe: CONTRAST_PROBE,
   }).sessionOutcome, "discriminate_candidates");
   assert.equal(decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: true,
     candidateScores: [],
@@ -302,6 +306,7 @@ test("user stop skips remaining collection and holdout when candidates already e
   });
   assert.equal(separated.type, "complete_with_range");
   const stopped = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     userStopped: true,
     candidateScores: [
@@ -364,6 +369,7 @@ test("discrimination waits for three training events after reserving holdout", (
 
 test("holdout passed is a validated range, not a user-stop close", () => {
   const validated = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     candidateScores: [
       { time: "04:48", score: 58 },
@@ -473,6 +479,7 @@ test("stale snapshot keeps discrimination instead of returning to collection", (
   });
   assert.equal(next.type, "ask_candidate_discriminator");
   assert.equal(decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     trainingGateOpen: true,
     snapshotCurrent: false,
@@ -494,12 +501,15 @@ test("a single candidate is sole_candidate, not a parallel range", () => {
   assert.equal(separation.lead, 0);
   assert.deepEqual(separation.credibleRange, ["05:00"]);
   const decision = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     trainingGateOpen: true,
     candidateScores: [{ time: "05:00", score: 80 }],
     holdoutValidation: "unavailable",
   });
-  assert.equal(decision.sessionOutcome, "adopt_representative");
+  // 原值是 adopt_representative；holdout unavailable 且用户未停止只能提供 review-only range。
+  assert.equal(decision.sessionOutcome, "provisional_range");
+  assert.equal(decision.canAdopt, false);
   assert.equal(decision.canConfirmExactMinute, false);
   assert.doesNotMatch(
     buildSkillVerificationReport({
diff --git a/frontend/tests/rectification-decision-authority.test.ts b/frontend/tests/rectification-decision-authority.test.ts
index 877ae788..191ad7af 100644
--- a/frontend/tests/rectification-decision-authority.test.ts
+++ b/frontend/tests/rectification-decision-authority.test.ts
@@ -4,6 +4,7 @@ import test from "node:test";
 
 import {
   decideRectification,
+  engineCapabilityCeilingFromReceipt,
   publicDecisionFields,
 } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { decideNextAction } from "../src/lib/rectification-agentic/core/decide-next-action.ts";
@@ -29,6 +30,182 @@ const SEPARATED = [
   { time: "04:49", score: 42 },
 ];
 
+type TestEngineCapabilityCeiling = Readonly<{
+  acceptanceAllowed: boolean;
+  selectionAllowed: boolean;
+  proposeAllowed: boolean;
+  confirmationAllowed: boolean;
+}>;
+
+const ENGINE_OPEN: TestEngineCapabilityCeiling = {
+  acceptanceAllowed: true,
+  selectionAllowed: true,
+  proposeAllowed: true,
+  confirmationAllowed: true,
+};
+
+function capabilityCombinations(): TestEngineCapabilityCeiling[] {
+  return Array.from({ length: 16 }, (_, bits) => ({
+    acceptanceAllowed: Boolean(bits & 1),
+    selectionAllowed: Boolean(bits & 2),
+    proposeAllowed: Boolean(bits & 4),
+    confirmationAllowed: Boolean(bits & 8),
+  }));
+}
+
+function decideWithEngineCeiling(
+  engineCeiling: TestEngineCapabilityCeiling,
+  overrides: Partial<Parameters<typeof decideRectification>[0]> = {},
+) {
+  return decideRectification({
+    methodCoverageAll: true,
+    trainingGateOpen: true,
+    snapshotCurrent: true,
+    candidateScores: SEPARATED,
+    holdoutValidation: "passed",
+    confirmationAllowed: true,
+    datedEventCount: 3,
+    datedDomainCount: 2,
+    ...overrides,
+    engineCeiling,
+  } as Parameters<typeof decideRectification>[0]);
+}
+
+test("invariant 1: TypeScript delivery capabilities never exceed the engine ceiling", () => {
+  for (const ceiling of capabilityCombinations()) {
+    const decision = decideWithEngineCeiling(ceiling);
+    assert.equal(decision.canAdopt && !ceiling.acceptanceAllowed, false, JSON.stringify(ceiling));
+    assert.equal(decision.selectionAllowed && !ceiling.selectionAllowed, false, JSON.stringify(ceiling));
+    assert.equal(decision.proposeAllowed && !ceiling.proposeAllowed, false, JSON.stringify(ceiling));
+    assert.equal(decision.canConfirmExactMinute && !ceiling.confirmationAllowed, false, JSON.stringify(ceiling));
+  }
+});
+
+test("invariant 2: insufficient dated evidence never permits selection or adoption", () => {
+  for (const datedEventCount of [0, 2, 3]) {
+    for (const datedDomainCount of [0, 1, 2]) {
+      if (datedEventCount >= 3 && datedDomainCount >= 2) continue;
+      const decision = decideWithEngineCeiling(ENGINE_OPEN, {
+        confirmationAllowed: false,
+        datedEventCount,
+        datedDomainCount,
+      });
+      assert.equal(decision.canAdopt, false, `${datedEventCount} events / ${datedDomainCount} domains`);
+      assert.equal(decision.selectionAllowed, false, `${datedEventCount} events / ${datedDomainCount} domains`);
+    }
+  }
+});
+
+test("invariant 3: tied leading candidates remain review-only when the user stops", () => {
+  const tiedScores = [
+    { time: "04:48", score: 12 },
+    { time: "04:49", score: 12 },
+    { time: "04:50", score: 11 },
+  ];
+  const stopped = decideWithEngineCeiling(ENGINE_OPEN, {
+    candidateScores: tiedScores,
+    confirmationAllowed: false,
+    userStopped: true,
+  });
+  assert.equal(stopped.completionStatus, "provisional_range_user_stopped");
+  assert.equal(stopped.canAdopt, false);
+
+  const continuing = decideWithEngineCeiling(ENGINE_OPEN, {
+    candidateScores: tiedScores,
+    confirmationAllowed: false,
+    userStopped: false,
+  });
+  assert.equal(continuing.separation.tiedForFirst, true);
+  assert.equal(continuing.canAdopt, false);
+});
+
+test("invariant 4: unavailable holdout stays review-only whether or not the user stops", () => {
+  for (const userStopped of [false, true]) {
+    const decision = decideWithEngineCeiling(ENGINE_OPEN, {
+      confirmationAllowed: false,
+      holdoutValidation: "unavailable",
+      userStopped,
+    });
+    assert.equal(decision.canAdopt, false, `userStopped=${userStopped}`);
+  }
+});
+
+test("raw engine receipt contradictions fail closed before delivery", () => {
+  const openReceipt = {
+    acceptance_allowed: true,
+    selection_allowed: true,
+    propose_allowed: true,
+    confirmation_allowed: false,
+  };
+  const closed = {
+    acceptanceAllowed: false,
+    selectionAllowed: false,
+    proposeAllowed: false,
+    confirmationAllowed: false,
+  };
+  for (const receipt of [
+    { ...openReceipt, accept_allowed: false },
+    { ...openReceipt, confirm_allowed: true },
+    { ...openReceipt, display_allowed: false },
+    { ...openReceipt, confirmation_allowed: undefined },
+  ]) {
+    assert.deepEqual(engineCapabilityCeilingFromReceipt(receipt), closed);
+  }
+});
+
+test("invariant 5: public overlay intersects all delivery gates with the engine receipt", () => {
+  const decision = decideWithEngineCeiling(ENGINE_OPEN);
+  const candidates = [
+    { candidateId: "c-0507", time: "05:07", rank: 1, relativeSupport: 13, tiedMinuteCount: 1 },
+    { candidateId: "c-0500", time: "05:00", rank: 2, relativeSupport: 12, tiedMinuteCount: 1 },
+    { candidateId: "c-0515", time: "05:15", rank: 3, relativeSupport: 10, tiedMinuteCount: 1 },
+  ];
+  const inferenceState = {
+    algorithm_version: "rectification-inference-v1",
+    candidate_set_id: "05:00-05:15:05:00,05:07,05:15",
+    revision: 2,
+    phase: "discrimination",
+    result_status: "discriminating",
+    range_start: "05:00",
+    range_end: "05:15",
+    candidates: [
+      { id: "05:07", time: "05:07", cluster_range: ["05:07", "05:07"], prior_score: 13, posterior_score: 15, probability: 0.4, status: "active", rank: 2, strong_conflict_count: 0 },
+      { id: "05:00", time: "05:00", cluster_range: ["05:00", "05:00"], prior_score: 12, posterior_score: 20, probability: 0.6, status: "active", rank: 1, strong_conflict_count: 0 },
+      { id: "05:15", time: "05:15", cluster_range: ["05:15", "05:15"], prior_score: 10, posterior_score: 30, probability: 0, status: "eliminated", rank: 3, strong_conflict_count: 1 },
+    ],
+    events: [],
+    probes: [],
+    answered_probes: [],
+    rounds: [],
+    entropy: 0.67,
+    representative_time: "05:00",
+    credible_range: ["05:00", "05:07"],
+  };
+  const validEngineCeilings = capabilityCombinations().filter((ceiling) => (
+    ceiling.acceptanceAllowed === ceiling.selectionAllowed
+    && (!ceiling.proposeAllowed || ceiling.selectionAllowed)
+    && (!ceiling.confirmationAllowed || ceiling.selectionAllowed)
+  ));
+
+  for (const ceiling of validEngineCeilings) {
+    const overlaid = overlayPublicDecision({
+      candidates,
+      representativeTime: "05:07",
+      decisionReceipt: {
+        acceptance_allowed: ceiling.acceptanceAllowed,
+        selection_allowed: ceiling.selectionAllowed,
+        propose_allowed: ceiling.proposeAllowed,
+        confirmation_allowed: ceiling.confirmationAllowed,
+        inference_state: inferenceState,
+      },
+    }, decision);
+    assert.equal(overlaid.can_adopt, ceiling.acceptanceAllowed, JSON.stringify(ceiling));
+    assert.equal(overlaid.selection_allowed, ceiling.selectionAllowed, JSON.stringify(ceiling));
+    assert.equal(overlaid.propose_allowed, ceiling.proposeAllowed, JSON.stringify(ceiling));
+    assert.equal(overlaid.can_confirm_exact_minute, ceiling.confirmationAllowed, JSON.stringify(ceiling));
+  }
+});
+
 function readSource(relative: string) {
   return readFileSync(new URL(relative, import.meta.url), "utf8");
 }
@@ -63,7 +240,7 @@ test("public decision fields are derived from decideRectification", () => {
     },
   ];
   for (const input of fixtures) {
-    const decision = decideRectification(input);
+    const decision = decideRectification({ ...input, engineCeiling: ENGINE_OPEN });
     const fields = publicDecisionFields(decision);
     assert.deepEqual(fields, {
       type: decision.nextAction,
@@ -518,6 +695,7 @@ test("career and relationship training still discriminates before family or occu
 
 test("public candidate cards follow the inference ranking and hide an inconsistent state", () => {
   const decision = decideRectification({
+    engineCeiling: ENGINE_OPEN,
     methodCoverageAll: true,
     trainingGateOpen: true,
     candidateScores: SEPARATED,
diff --git a/frontend/tests/rectification-eight-method.test.ts b/frontend/tests/rectification-eight-method.test.ts
index 4c004c35..17bfc9fc 100644
--- a/frontend/tests/rectification-eight-method.test.ts
+++ b/frontend/tests/rectification-eight-method.test.ts
@@ -30,6 +30,7 @@ import {
   resolveExactSkillPackage,
 } from "../src/lib/skill-package-registry.ts";
 import {
+  OPEN_ENGINE_CAPABILITY_CEILING,
   CASE_ID,
   CANDIDATE_ID,
   FOCUS_ID,
@@ -55,6 +56,7 @@ const UNIQUE_MINUTE_COPY = /±5 分钟确定性/;
 
 function collectDecision(candidates: readonly { time: string; relativeSupport?: number }[]) {
   return decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: candidates.map((item) => ({ time: item.time, score: item.relativeSupport ?? 0 })),
@@ -198,6 +200,7 @@ const ENGINE_SCORE = {
     display_allowed: true,
     selection_allowed: true,
     acceptance_allowed: true,
+    propose_allowed: true,
     confirmation_allowed: false,
     accept_allowed: true,
     confirm_allowed: false,
@@ -856,6 +859,7 @@ test("read-case follows method plan and keeps D9/D10 type tables when SQL missin
           policy_version: "rectification-candidate-policy-v2",
           selection_allowed: true,
           acceptance_allowed: true,
+          propose_allowed: true,
           confirmation_allowed: false,
           representative_candidate_id: CANDIDATE_ID,
           overall_confidence: "medium",
@@ -1373,6 +1377,15 @@ test("public tool surface stays at 14 and new cases bind 10.0.13", () => {
     selectionKind: null,
     algorithmVersion: "rectification-v5",
     decisionReceipt: {
+      acceptance_allowed: true,
+      selection_allowed: true,
+      propose_allowed: true,
+      confirmation_allowed: false,
+      inference_state: producedInferenceState(plateauCandidates.map((item) => ({
+        id: item.candidateId,
+        time: item.time,
+        relative_support: item.relativeSupport,
+      }))),
       execution_ledger: [
         { method: "vimshottari-dasha", status: "executed" },
         { method: "narayana-dasha", status: "executed" },
@@ -1389,7 +1402,7 @@ test("public tool surface stays at 14 and new cases bind 10.0.13", () => {
   // The execution ledger does not prove same-range support or raw-result agreement.
   assert.equal(plateau.rectification_label, "manual_pattern_consensus");
   assert.deepEqual(plateau.executed_methods, ["vimshottari-dasha", "narayana-dasha"]);
-  const completed = latestResultToolProjection({
+  const collecting = latestResultToolProjection({
     resultId: RESULT_ID,
     candidates: plateauCandidates,
     selectionAllowed: true,
@@ -1405,6 +1418,7 @@ test("public tool surface stays at 14 and new cases bind 10.0.13", () => {
       ],
     },
   }, decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     datedEventCount: 2,
@@ -1414,10 +1428,41 @@ test("public tool surface stays at 14 and new cases bind 10.0.13", () => {
       score: item.relativeSupport,
     })),
   }));
-  assert.equal(completed.rectification_label, "user_history_verification_required");
-  assert.equal(completed.evidence_stop_reason, "insufficient_dated_events");
+  assert.equal(collecting.rectification_label, "user_history_verification_required");
+  assert.equal(collecting.evidence_stop_reason, "insufficient_dated_events");
+  assert.deepEqual(collecting.executed_methods, ["vimshottari-dasha", "narayana-dasha"]);
+
+  const exhaustedCandidates = plateauCandidates.map((item, index) => ({
+    ...item,
+    relativeSupport: index < 2 ? 40 : 20,
+  }));
+  const completed = latestResultToolProjection({
+    resultId: RESULT_ID,
+    candidates: exhaustedCandidates,
+    selectionAllowed: true,
+    confirmationAllowed: false,
+    representativeTime: "04:45",
+    selectedTime: null,
+    selectionKind: null,
+    algorithmVersion: "rectification-v5",
+    decisionReceipt: {
+      acceptance_allowed: true,
+      selection_allowed: true,
+      propose_allowed: true,
+      confirmation_allowed: false,
+    },
+  }, decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
+    methodCoverageAll: true,
+    trainingGateOpen: true,
+    datedEventCount: 3,
+    datedDomainCount: 2,
+    candidateScores: exhaustedCandidates.map((item) => ({
+      time: item.time,
+      score: item.relativeSupport,
+    })),
+  }));
   assert.equal(completed.termination_copy, "当前最优结果是候选时间段，而不是已经确认的唯一出生分钟。临时代表时间仅用于下一轮验证与比较。");
-  assert.deepEqual(completed.executed_methods, ["vimshottari-dasha", "narayana-dasha"]);
   const skill = readFileSync(new URL("../../skills/jyotish-birth-time-rectification/SKILL.md", import.meta.url), "utf8");
   assert.match(skill, /method_followup_plan/);
   assert.match(skill, /感情 → 事业 → 家人 → 职业 → 占问/);
@@ -1435,12 +1480,12 @@ test("public tool surface stays at 14 and new cases bind 10.0.13", () => {
 
 test("Mastra hides active candidates when the receipt range is corrupted", () => {
   const candidates = [
-    { candidateId: CANDIDATE_ID, time: "05:00", rank: 1, relativeSupport: 20, tiedMinuteCount: 1 },
-    { candidateId: SECOND_CANDIDATE_ID, time: "05:07", rank: 2, relativeSupport: 15, tiedMinuteCount: 1 },
+    { candidateId: CANDIDATE_ID, time: "05:00", rank: 1, relativeSupport: 58, tiedMinuteCount: 1 },
+    { candidateId: SECOND_CANDIDATE_ID, time: "05:07", rank: 2, relativeSupport: 42, tiedMinuteCount: 1 },
   ];
   const inferenceState = producedInferenceState([
-    { id: CANDIDATE_ID, time: "05:00", relative_support: 20 },
-    { id: SECOND_CANDIDATE_ID, time: "05:07", relative_support: 15 },
+    { id: CANDIDATE_ID, time: "05:00", relative_support: 58 },
+    { id: SECOND_CANDIDATE_ID, time: "05:07", relative_support: 42 },
   ]);
   const latest = {
     resultId: RESULT_ID,
@@ -1451,9 +1496,16 @@ test("Mastra hides active candidates when the receipt range is corrupted", () =>
     selectedTime: null,
     selectionKind: null,
     algorithmVersion: "rectification-v5",
-    decisionReceipt: { inference_state: inferenceState },
+    decisionReceipt: {
+      acceptance_allowed: true,
+      selection_allowed: true,
+      propose_allowed: true,
+      confirmation_allowed: false,
+      inference_state: inferenceState,
+    },
   };
   const session = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     userStopped: true,
     candidateScores: candidates.map((item) => ({ time: item.time, score: item.relativeSupport })),
@@ -1468,6 +1520,7 @@ test("Mastra hides active candidates when the receipt range is corrupted", () =>
   const invalid = latestResultToolProjection({
     ...latest,
     decisionReceipt: {
+      ...latest.decisionReceipt,
       inference_state: { ...inferenceState, credible_range: ["04:00", "04:10"] },
     },
   }, session);
@@ -2896,11 +2949,15 @@ test("paused case with selection_allowed may offer the escape hatch", async () =
     ...receiptHandlers,
     get_agentic_rectification_case_dossier: () => dossierFixture({
       status: "paused",
-      evidence: [educationEvidence],
+      evidence: [educationEvidence, familyEvidence, careerEvidence],
       latestResult: candidateSnapshotFixture({
         selectionAllowed: true,
         representativeTime: "04:48",
-        evidenceLedgerFingerprint: scoreableFingerprintForRawEvidence([educationEvidence]),
+        evidenceLedgerFingerprint: scoreableFingerprintForRawEvidence([
+          educationEvidence,
+          familyEvidence,
+          careerEvidence,
+        ]),
         candidates: [
           { candidate_id: CANDIDATE_ID, rank: 1, time: "04:48", relative_support: 58, tied_minute_count: 1 },
           { candidate_id: SECOND_CANDIDATE_ID, rank: 2, time: "04:49", relative_support: 42, tied_minute_count: 2 },
diff --git a/frontend/tests/rectification-hidden-e2e.test.ts b/frontend/tests/rectification-hidden-e2e.test.ts
index f1b94479..795ce96f 100644
--- a/frontend/tests/rectification-hidden-e2e.test.ts
+++ b/frontend/tests/rectification-hidden-e2e.test.ts
@@ -1,6 +1,8 @@
 import assert from "node:assert/strict";
 import test from "node:test";
 
+import { OPEN_ENGINE_CAPABILITY_CEILING } from "./rectification-v9-test-support.ts";
+
 import { applyChoiceWithoutEvidence } from "../src/lib/rectification-agentic/v9/inference-adapter.ts";
 import { applyHoldoutAnswer, buildInferenceState } from "../src/lib/rectification-agentic/core/build-state.ts";
 import { unionStillValidRange } from "../src/lib/rectification-agentic/core/credible-range.ts";
@@ -155,6 +157,7 @@ test("hidden case walks collection through holdout to a range or representative
     score: item.posterior_score,
   }));
   const afterAnswers = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     candidateScores: scores,
     holdoutValidation: "not_started",
@@ -166,6 +169,7 @@ test("hidden case walks collection through holdout to a range or representative
   assert.equal(holdoutPassed.holdout_passed, true);
   assert.deepEqual(posteriorMap(holdoutPassed.candidates), posteriorMap(answered.state.candidates));
   const closed = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     candidateScores: holdoutPassed.candidates.map((item) => ({
       time: item.time,
@@ -223,6 +227,7 @@ test("holdout failure returns to candidate discrimination", () => {
     }],
   });
   const next = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     candidateScores: failed.candidates.map((item) => ({ time: item.time, score: item.posterior_score })),
     discriminatorProbe: selectDiscriminatorProbe(retryPacket),
@@ -277,6 +282,7 @@ test("mutated years and domains do not keep asking exam-quality copy", () => {
 
 test("user stop is an unvalidated range, not a holdout pass", () => {
   const stopped = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     userStopped: true,
     candidateScores: [
@@ -293,6 +299,7 @@ test("user stop is an unvalidated range, not a holdout pass", () => {
 
 test("tied candidates without a high-information probe offer a range instead of inventing left/right", () => {
   const next = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     trainingGateOpen: true,
     candidateScores: [
@@ -378,6 +385,7 @@ test("case A: two then three events keep collecting; four training events may di
       })),
     });
     return decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
       methodCoverageAll: true,
       trainingGateOpen: state.events.filter((item) => item.usage === "training").length >= 3
         && new Set(state.events.filter((item) => item.usage === "training").map((item) => item.domain)).size >= 2,
diff --git a/frontend/tests/rectification-holdout-renderable.test.ts b/frontend/tests/rectification-holdout-renderable.test.ts
index be82999d..5ba0f98e 100644
--- a/frontend/tests/rectification-holdout-renderable.test.ts
+++ b/frontend/tests/rectification-holdout-renderable.test.ts
@@ -97,7 +97,13 @@ function producedDossier(
     })),
     representativeTime: state.representative_time,
     evidenceLedgerFingerprint: evidenceLedgerFingerprint(evidence as never),
-    decisionReceipt: { inference_state: state },
+    decisionReceipt: {
+      acceptance_allowed: true,
+      selection_allowed: true,
+      propose_allowed: true,
+      confirmation_allowed: false,
+      inference_state: state,
+    },
   };
   return {
     state,
@@ -121,7 +127,7 @@ function holdoutFollowup(dossier: ReturnType<typeof producedDossier>["dossier"])
   });
 }
 
-test("sticky holdout with unknown precision does not ask validation and can adopt", () => {
+test("sticky holdout with unknown precision stays review-only", () => {
   const { state, dossier: dated } = producedDossier(COVERED_EVIDENCE);
   const holdout = state.events.find((item) => item.usage === "holdout");
   assert.ok(holdout);
@@ -141,11 +147,14 @@ test("sticky holdout with unknown precision does not ask validation and can adop
 
   const decision = decideFromDossier(dossier);
   assert.notEqual(decision.nextAction, "ask_holdout_validation");
-  assert.equal(decision.nextAction, "ready_to_adopt");
-  assert.equal(decision.sessionOutcome, "adopt_representative");
+  // 原值是 ready_to_adopt；unknown precision 让 holdout 不可用，不能进入采用态。
+  assert.equal(decision.nextAction, "offer_provisional_range");
+  // 原值是 adopt_representative；未通过独立核对只能交付临时区间。
+  assert.equal(decision.sessionOutcome, "provisional_range");
   assert.notEqual(decision.sessionOutcome, "validated_range");
   assert.equal(decision.validated, false);
-  assert.equal(decision.canAdopt, true);
+  // 原值是 true；holdout unavailable 必须 fail-closed。
+  assert.equal(decision.canAdopt, false);
   assert.equal(decision.canConfirmExactMinute, false);
 });
 
@@ -169,7 +178,10 @@ test("passed holdout is a validated range, not a unique minute", () => {
     ...dossier,
     latestResult: {
       ...dossier.latestResult,
-      decisionReceipt: { inference_state: passed },
+      decisionReceipt: {
+        ...dossier.latestResult.decisionReceipt,
+        inference_state: passed,
+      },
     },
   });
   assert.equal(decided.sessionOutcome, "validated_range");
@@ -187,7 +199,10 @@ test("failed holdout keeps existing non-validated close or discriminate path", (
     ...dossier,
     latestResult: {
       ...dossier.latestResult,
-      decisionReceipt: { inference_state: failed },
+      decisionReceipt: {
+        ...dossier.latestResult.decisionReceipt,
+        inference_state: failed,
+      },
     },
   });
   assert.equal(decided.holdoutValidation, "failed");
diff --git a/frontend/tests/rectification-ingest-p0.test.ts b/frontend/tests/rectification-ingest-p0.test.ts
index 8af20343..04a7f7c3 100644
--- a/frontend/tests/rectification-ingest-p0.test.ts
+++ b/frontend/tests/rectification-ingest-p0.test.ts
@@ -21,6 +21,7 @@ import { RECTIFICATION_SKILL_VERSION } from "../src/lib/rectification-agentic/v9
 import { decideRectification } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { createRectificationV9Tools, latestResultToolProjection } from "../src/mastra/rectification-v9-tools.ts";
 import {
+  OPEN_ENGINE_CAPABILITY_CEILING,
   CASE_ID,
   CANDIDATE_ID,
   EVIDENCE_ID,
@@ -128,6 +129,7 @@ test("a 25-minute tied plateau projects width and forbids unique-minute confirma
     selectionKind: null,
     algorithmVersion: "rectification-v5",
   }, decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: candidates.map((item) => ({ time: item.time, score: item.relativeSupport })),
diff --git a/frontend/tests/rectification-occupation-coverage-exit.test.ts b/frontend/tests/rectification-occupation-coverage-exit.test.ts
index 74222a15..cb3f7043 100644
--- a/frontend/tests/rectification-occupation-coverage-exit.test.ts
+++ b/frontend/tests/rectification-occupation-coverage-exit.test.ts
@@ -2,6 +2,8 @@ import assert from "node:assert/strict";
 import { readFileSync } from "node:fs";
 import test from "node:test";
 
+import { OPEN_ENGINE_CAPABILITY_CEILING } from "./rectification-v9-test-support.ts";
+
 import { decideRectification } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { trainingScoreableGate } from "../src/lib/rectification-agentic/v9/evidence-model.ts";
 import { RECTIFICATION_SKILL_VERSION } from "../src/lib/rectification-agentic/v9/case-status.ts";
@@ -309,12 +311,11 @@ test("training gate closed still withholds yearless varga cards", () => {
 
 test("training complete with no renderable distinguish card allows offering a range without adopt", () => {
   const blocked = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: true,
     candidateScores: NARROW_LEAD,
     discriminatorProbe: null,
-    engineAcceptAllowed: true,
-    engineProposeAllowed: true,
   });
   assert.equal(blocked.canOfferRange, true);
   assert.equal(blocked.canAdopt, false);
@@ -322,12 +323,11 @@ test("training complete with no renderable distinguish card allows offering a ra
   assert.equal(blocked.nextAction, "offer_provisional_range");
   assert.equal(blocked.sessionOutcome, "provisional_range");
   const stillClosed = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: NARROW_LEAD,
     discriminatorProbe: null,
-    engineAcceptAllowed: true,
-    engineProposeAllowed: true,
   });
   assert.equal(stillClosed.canOfferRange, false);
   assert.equal(stillClosed.canAdopt, false);
@@ -352,8 +352,10 @@ test("decideFromDossier offers a range when training is complete and the ask lay
       evidenceLedgerFingerprint: evidenceLedgerFingerprint(CASE_EVIDENCE as never),
       decisionReceipt: {
         accept_allowed: true,
+        acceptance_allowed: true,
         propose_allowed: true,
         selection_allowed: true,
+        confirmation_allowed: false,
       },
     },
     case: { acceptedTime: null },
@@ -440,6 +442,7 @@ test("a mismatched receipt house_table is not emitted with another representativ
 
 test("tool projection does not pair a 05:00 house table with a 04:47 representative time", () => {
   const decision = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: true,
     trainingGateOpen: true,
     candidateScores: TIED,
diff --git a/frontend/tests/rectification-range-offer-deadend.test.ts b/frontend/tests/rectification-range-offer-deadend.test.ts
index 9724577e..03742ca9 100644
--- a/frontend/tests/rectification-range-offer-deadend.test.ts
+++ b/frontend/tests/rectification-range-offer-deadend.test.ts
@@ -32,6 +32,7 @@ import { projectCurrentQuestion } from "../src/lib/rectification-agentic/v9/turn
 import { RECTIFICATION_SKILL_VERSION } from "../src/lib/rectification-agentic/v9/case-status.ts";
 import { evidenceLedgerFingerprint } from "../src/lib/rectification-agentic/v9/tool-service.ts";
 import {
+  OPEN_ENGINE_CAPABILITY_CEILING,
   CASE_ID,
   FOCUS_ID,
   TURN_ID,
@@ -334,8 +335,10 @@ function liveDossier(
       representativeTime: "04:51",
       decisionReceipt: {
         accept_allowed: true,
+        acceptance_allowed: true,
         propose_allowed: true,
         selection_allowed: true,
+        confirmation_allowed: false,
         inference_state: state,
         ...(extra.eventProbes
           ? {
@@ -401,8 +404,10 @@ function rpcDossier(decision: DecisionDossier) {
       candidates: snapshotCandidates(),
       decisionReceipt: {
         accept_allowed: true,
+        acceptance_allowed: true,
         propose_allowed: true,
         selection_allowed: true,
+        confirmation_allowed: false,
         ...(decision.latestResult?.decisionReceipt ?? {}),
       },
     }),
@@ -583,23 +588,24 @@ test("offerRangeWithoutAdopt persists a spoken collect and narrates the numeric
   assert.equal(Boolean(idle.hostNarration) && Boolean(question), true);
 });
 
-test("userStopped still completes as provisional_range_user_stopped with canAdopt", () => {
+test("userStopped completes with a review-only provisional range", () => {
   const stopped = decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: true,
     userStopped: true,
-    engineAcceptAllowed: true,
-    engineProposeAllowed: true,
     candidateScores: ACTIVE.map((time) => ({ time, score: SCORES[time] ?? 0 })),
   });
   assert.equal(stopped.sessionOutcome, "provisional_range_user_stopped");
-  assert.equal(stopped.canAdopt, true);
+  // 原值是 true；用户停止只结束追问，不能绕过 coverage 和 holdout 门槛。
+  assert.equal(stopped.canAdopt, false);
   assert.equal(stopped.canOfferRange, true);
   assert.equal(isNonConvergingRangeOffer(stopped), false);
   const dossier = liveDossier([CAREER_2024_04, CAREER_2023_ACTIVATION], { status: "paused" });
   const fromDossier = decideFromDossier(dossier, { birthDate: "1997-08-08" });
   assert.equal(fromDossier.sessionOutcome, "provisional_range_user_stopped");
-  assert.equal(fromDossier.canAdopt, true);
+  // 原值是 true；该 dossier 只有两个同域日期事件，停止不等于证据达标。
+  assert.equal(fromDossier.canAdopt, false);
 });
 
 test("idle persist still decides from the dossier once and does not invent collect_evidence", () => {
diff --git a/frontend/tests/rectification-v10-tool-contract.test.ts b/frontend/tests/rectification-v10-tool-contract.test.ts
index ac5b1c13..dedf4eb6 100644
--- a/frontend/tests/rectification-v10-tool-contract.test.ts
+++ b/frontend/tests/rectification-v10-tool-contract.test.ts
@@ -5,6 +5,7 @@ import { PUBLIC_RECTIFICATION_TOOLS } from "../src/lib/rectification-agentic/v9/
 import { decideRectification } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
 import { createRectificationV9AgentTools, createRectificationV9Tools } from "../src/mastra/rectification-v9-tools.ts";
 import {
+  OPEN_ENGINE_CAPABILITY_CEILING,
   CASE_ID,
   EVIDENCE_ID,
   FOCUS_ID,
@@ -212,6 +213,7 @@ test("agent tools omit offer-candidates when proposeAllowed is false", () => {
     turnId: TURN_ID,
     accounting: fakeAccounting({}).client as never,
   }, decideRectification({
+    engineCeiling: OPEN_ENGINE_CAPABILITY_CEILING,
     methodCoverageAll: false,
     trainingGateOpen: false,
     candidateScores: [],
diff --git a/frontend/tests/rectification-v9-engine-contract.test.ts b/frontend/tests/rectification-v9-engine-contract.test.ts
index 552ac248..b9b019a7 100644
--- a/frontend/tests/rectification-v9-engine-contract.test.ts
+++ b/frontend/tests/rectification-v9-engine-contract.test.ts
@@ -25,6 +25,7 @@ const DECISION_RECEIPT = {
   display_allowed: true,
   selection_allowed: true,
   acceptance_allowed: true,
+  propose_allowed: true,
   confirmation_allowed: false,
   accept_allowed: true,
   confirm_allowed: false,
diff --git a/frontend/tests/rectification-v9-test-support.ts b/frontend/tests/rectification-v9-test-support.ts
index f86ea7c4..fecd0dc4 100644
--- a/frontend/tests/rectification-v9-test-support.ts
+++ b/frontend/tests/rectification-v9-test-support.ts
@@ -53,6 +53,13 @@ export const SOURCE_TURN_ID = "77777777-7777-4777-8777-777777777777";
 export const RECTIFICATION_SKILL_SHA256 = "5acb3103e80993ea611b93d2c1746e70b74aff8f8636bcffc80a837b954b470d";
 export const RECTIFICATION_SKILL_SOURCE_COMMIT = "0fd111d16b45796086a6c1d0945dbd3de6755d8a";
 
+export const OPEN_ENGINE_CAPABILITY_CEILING = {
+  acceptanceAllowed: true,
+  selectionAllowed: true,
+  proposeAllowed: true,
+  confirmationAllowed: true,
+} as const;
+
 export const CANDIDATE_RANGE = { start_time: "04:50", end_time: "05:10" };
 
 export function dossierFixture(overrides: {
@@ -251,6 +258,7 @@ export function candidateSnapshotFixture(overrides: {
       policy_version: "rectification-candidate-policy-v2",
       selection_allowed: overrides.selectionAllowed ?? true,
       acceptance_allowed: overrides.selectionAllowed ?? true,
+      propose_allowed: overrides.selectionAllowed ?? true,
       confirmation_allowed: overrides.confirmationAllowed ?? false,
       representative_candidate_id: overrides.representativeTime ? CANDIDATE_ID : null,
       overall_confidence: "medium",