feat(rectification): add adaptive question selector

frontend/src/lib/birth-time-journey-adapters.ts

@@ -45,6 +45,7 @@ const optionSchema = z.object({
 const questionSchema = z.object({
   id: z.string().trim().min(1),
   prompt: z.string().trim().min(1),
+  domain: z.string().trim().min(1).optional(),
   round: z.number().int().min(1).optional(),
   options: z.array(optionSchema).optional(),
 }).passthrough();
@@ -90,6 +91,9 @@ const scoringSchema = z.object({
   })),
   next_round: z.number().int().min(1).nullable().default(null),
   next_round_questions: z.array(questionSchema).default([]),
+  next_round_selection: z.object({
+    selected_questions: z.array(questionSchema).default([]),
+  }).nullable().optional(),
 }).passthrough();
 
 const eventDomainSchema = z.enum([
@@ -232,6 +236,7 @@ function normalizeQuestion(question: z.infer<typeof questionSchema>): Rectificat
   return {
     id: question.id,
     prompt: question.prompt,
+    ...(question.domain ? { domain: question.domain } : {}),
     ...(question.round ? { round: question.round } : {}),
     ...(question.options ? { options: question.options } : {}),
   };
@@ -239,11 +244,14 @@ function normalizeQuestion(question: z.infer<typeof questionSchema>): Rectificat
 
 export function parseRectificationScoring(value: unknown): RectificationScoringResult {
   const parsed = scoringSchema.parse(value);
+  const selectedQuestions = parsed.next_round_selection?.selected_questions ?? [];
   return {
     answeredCount: parsed.answered_count,
     candidateClusterRankings: parsed.candidate_cluster_rankings,
     nextRound: parsed.next_round,
-    nextRoundQuestions: parsed.next_round_questions.map(normalizeQuestion),
+    nextRoundQuestions: (selectedQuestions.length > 0
+      ? selectedQuestions
+      : parsed.next_round_questions).map(normalizeQuestion),
     raw: parsed,
   };
 }

frontend/src/lib/birth-time-journey-response.ts

@@ -51,6 +51,7 @@ export function projectJourneyResponse(
       questionnaire: response.questionnaire,
       persistedProgress,
       candidateResult: response.candidateResult,
+      serverSelectedQuestion: response.scoring?.nextRoundQuestions[0] ?? null,
       lifeEvents: response.lifeEvents,
     }),
   };
@@ -93,6 +94,7 @@ function projectStoredTurn(
     questionnaire: stored.questionnaire,
     persistedProgress: stored.persistedProgress,
     candidateResult: stored.candidateResult ?? null,
+    serverSelectedQuestion: stored.scoring?.nextRoundQuestions[0] ?? null,
     lifeEvents: stored.lifeEvents ?? [],
   });
 }

frontend/src/lib/birth-time-journey-score-transition.ts

@@ -26,6 +26,7 @@ function completedTurn(
     questionnaire: stored.questionnaire,
     persistedProgress: stored.persistedProgress,
     candidateResult,
+    serverSelectedQuestion: stored.scoring?.nextRoundQuestions[0] ?? null,
     lifeEvents: stored.lifeEvents ?? [],
   });
 }

frontend/src/lib/birth-time-journey-service.ts

@@ -27,6 +27,7 @@ export type RectificationAnswer = "A" | "B" | "C" | "D";
 export type RectificationQuestion = {
   readonly id: string;
   readonly prompt: string;
+  readonly domain?: string;
   readonly round?: number;
   readonly options?: readonly {
     readonly key: RectificationAnswer;

frontend/src/lib/birth-time-journey-turn.ts

@@ -174,9 +174,40 @@ export type JourneyTurnProjectionInput = {
     readonly askedDomains: readonly EvidenceDomain[];
   } | null;
   readonly candidateResult: CandidateResult | null;
+  readonly serverSelectedQuestion?: { readonly id: string; readonly domain?: string } | null;
   readonly lifeEvents: readonly LifeEvent[];
 };
 
+const serverDomainMap: Readonly<Record<string, EvidenceDomain>> = {
+  education: "education",
+  relocation: "relocation",
+  residence: "relocation",
+  relationship: "relationship",
+  career: "career",
+  career_learning: "career",
+  public_work: "career",
+  finance: "finance",
+  health_pressure: "health_pressure",
+};
+
+function serverAdaptiveQuestion(
+  question: JourneyTurnProjectionInput["serverSelectedQuestion"],
+  adaptiveRound: number,
+): QuestionSpec | null {
+  if (!question?.domain) return null;
+  const domain = serverDomainMap[question.domain];
+  if (!domain) return null;
+  return {
+    questionId: question.id,
+    phase: "adaptive",
+    domain,
+    requestedPrecision: ["year", "month"],
+    allowUnknown: true,
+    purposeCode: `candidate_difference_${domain}`,
+    plannerVersion: "server-next-round-selection-v1",
+  };
+}
+
 function projectionPhase(input: JourneyTurnProjectionInput, progress: JourneyProgress): JourneyProgress["phase"] {
   if (input.snapshot.state === "ready") return "ready";
   if (input.candidateResult) {
@@ -219,7 +250,7 @@ export function projectJourneyTurn(input: JourneyTurnProjectionInput): JourneyTu
   const decisionProgress = input.candidateResult?.confidence === "low"
     ? { ...projectedProgress, adaptiveRound }
     : projectedProgress;
-  const nextQuestion = phase === "baseline" || phase === "adaptive"
+  const plannedQuestion = phase === "baseline" || phase === "adaptive"
     ? planEvidenceQuestion({
       phase,
       samples: input.questionnaire?.samples ?? [],
@@ -228,6 +259,9 @@ export function projectJourneyTurn(input: JourneyTurnProjectionInput): JourneyTu
       adaptiveRound,
     })
     : null;
+  const nextQuestion = phase === "adaptive"
+    ? serverAdaptiveQuestion(input.serverSelectedQuestion, adaptiveRound) ?? plannedQuestion
+    : plannedQuestion;
   return {
     turnVersion: input.turnVersion,
     nextAction: deriveNextAction({