fix(rectification): centralize delivery authority

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,