feat(consult): plain answer shape — conclusion first, one section per person, no word caps (BUG-1132~1134)

Retire the 09-17 opener shape (coined pattern name, push/tidy periods,
play-a-role) that produced riddles; one shape definition in
consultation-thinking-plan; parents card names mother/father roles with MK;
empty-house rule; thinking bar closes the opener at any H2.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N4f2nya58RoRu4yEmJgRGE

frontend/src/app/api/consult/route.ts

@@ -49,6 +49,7 @@ import type { AgentExecutionReceipt, WorkflowReceipt } from "@/lib/consultation-
 import {
   consultationContinueMessages,
   followUpAnswerShapeInstruction,
+  natalAnswerShapeBody,
   hasPriorAssistantAnswer,
   natalUserTurnShape,
   natalConsultationThinkingPlan,
@@ -1586,7 +1587,7 @@ export async function POST(request: Request) {
     // / follow-up split as the agentic path (BUG-1071), one statement of it.
     const legacyNatalInstruction = hasPriorAssistantAnswer(history, { summaryText: historyWindow.summaryText })
       ? followUpAnswerShapeInstruction()
-      : "先用不超过 400 字口语直接回答下面的问题，不要加标题；形状为：先给反差（表面 A，底下 B，都是盘上的结构，命名成一个格局）、再说清谁在推谁在修、然后「别去应 X 的象，去扮演 Y 的象」；开场不写行动。然后按三个二级标题写：## 盘里支持这个判断的地方（原始结构、六步宫位、Yoga 表作为依据，只写开场没说过的，表格与正文二选一）、## 时间怎么看、## 这周可以做的一件事（最多三条行动，只在这里出现一次）。全文不超过 900 字。骨架不可省略；不写「先回答你的问题」这个标题，文末技法审计表由产品界面折叠展示，不写进正文。星盘事实只使用系统里已经注入的计算结果，不要复述内部字段、JSON 或再跑一遍咨询流程。";
+      : `${natalAnswerShapeBody()}骨架不可省略；文末技法审计表由产品界面折叠展示，不写进正文。星盘事实只使用系统里已经注入的计算结果，不要复述内部字段、JSON 或再跑一遍咨询流程。`;
 
     const cacheBoundary = cachedSystemMessage("【上下文缓存边界】后续内容为本轮请求输入。", selectedModel.model);
     const legacyHistory = history.map((message) => message.role === "user"