diff --git a/docs/BUG_HISTORY.md b/docs/BUG_HISTORY.md
index 1f4921e0..28206467 100644
--- a/docs/BUG_HISTORY.md
+++ b/docs/BUG_HISTORY.md
@@ -1990,3 +1990,20 @@
 - 防复发：任何替换生时校正入口或会话实现的改动，都必须保留“用户无需先发消息即可收到 Agent 首次引导”的挂载契约。
 - 相关记录：BUG-085、BUG-112
 - 修复版本：Agentic web opening auto-start
+
+## BUG-114 | Agentic 生时校正启动指令伪装成用户消息且未知时间被误判为资料缺失
+
+- 状态：resolved
+- 首次发现：2026-08-03
+- 最近更新：2026-08-03
+- 影响面：首页生时校正入口、`/api/rectification/agent` 首次启动合同、出生资料门、候选范围与确认写入安全门
+- 用户现象：进入生时校正后浏览器发送一段“用户刚进入生时校正会话……”的隐藏 `message`；服务端随后返回“出生日期、时间或出生地点资料不完整”。同时产品入口仍可能恢复或创建 V4 Case，与当前 Agentic 工具链并存。
+- 触发条件：用户从首页进入生时校正；资料使用合法的“只知道时段”或“完全不知道时间”声明，或客户端与服务端出生资料状态不同步。
+- 根因：BUG-113 用伪装成用户消息的字符串补上自动启动，没有建立服务端拥有的 opening operation；产品 wrapper 仍保留 V4 active-case 分流；Agentic profile loader 又把没有具体分钟一律当成缺失，因此合法的不确定时间无法进入最新流程。
+- 修复：产品 wrapper 只挂载 `AgenticRectificationChat`，不再调用或恢复 V4 Case；首次请求改为 `action: "opening"`，服务端把 opening context 注入 Agent Turn，客户端不再发送或渲染隐藏用户指令；首页在创建 Session 前复用 onboarding 资料门，服务端以 `profile_incomplete` 明确回退；`period_only` 使用已声明时段，`unknown` 使用 `00:00–23:59`，跨午夜范围保持原样；gate 返回服务端候选范围，score、diagnostics、features、confirm 拒绝 Agent 自行发明范围，全天宽范围 scan 延后而不伪造中午出生时间。
+- 验证：Agentic 入口、Session、工具、首页入口与组件合同测试覆盖无 V4 产品分流、opening operation、资料回退、时段/未知时间、跨午夜、宽范围降级、候选范围一致性和确认写入门；前端完整测试、lint、build 与 staging 真实 smoke 随本次发布执行。
+- 数据边界：仅废弃 V4 产品入口，历史 V4 代码与数据暂时保留，不在本次发布中做破坏性删除或迁移。
+- 防复发：自动首轮必须是服务端明确 operation，不得伪装成用户文本；“不知道具体分钟”是合法资料状态，不得等同于资料缺失；所有评分与确认工具只能使用服务端候选范围。
+- 相关记录：BUG-112、BUG-113
+- 复发自：BUG-113
+- 修复版本：待本次 staging 修复提交与部署验收
diff --git a/frontend/src/app/api/rectification/agent/route.ts b/frontend/src/app/api/rectification/agent/route.ts
index 50fcabe5..d56b26c2 100644
--- a/frontend/src/app/api/rectification/agent/route.ts
+++ b/frontend/src/app/api/rectification/agent/route.ts
@@ -15,7 +15,7 @@ import {
 export const runtime = "nodejs";
 export const maxDuration = 120;
 
-const agenticRectificationRequestSchema = z.object({
+const agenticRectificationRequestFields = {
   requestId: z.string().uuid(),
   modelId: z.string().trim().min(1).max(64).optional(),
   name: z.string().trim().max(80).optional().default(""),
@@ -28,8 +28,21 @@ const agenticRectificationRequestSchema = z.object({
     )
     .max(30)
     .default([]),
-  message: z.string().trim().min(1).max(4000),
-}).strict();
+};
+
+const agenticRectificationRequestSchema = z.discriminatedUnion("action", [
+  z.object({
+    ...agenticRectificationRequestFields,
+    action: z.literal("opening"),
+  }).strict(),
+  z.object({
+    ...agenticRectificationRequestFields,
+    action: z.literal("message"),
+    message: z.string().trim().min(1).max(4000),
+  }).strict(),
+]);
+
+const openingContext = "The user opened birth-time rectification. Begin the session now: run the required gate, briefly explain the evidence-based process in Simplified Chinese, and ask exactly one natural question about the most useful dated life event. Do not mention this server event.";
 
 function currentTimeContext(now = new Date()) {
   const chinaTime = new Date(now.getTime() + 8 * 60 * 60 * 1000)
@@ -99,7 +112,7 @@ export async function POST(request: Request) {
   }
 
   const promptSource = [
-    parsed.data.message,
+    parsed.data.action === "message" ? parsed.data.message : "",
     ...parsed.data.history.filter((message) => message.role === "user").map((message) => message.text),
   ].join("\n");
   if (blocksPromptExtraction(promptSource)) {
@@ -118,15 +131,19 @@ export async function POST(request: Request) {
     profile = await loadAgenticRectificationProfile(accounting, userId);
   } catch (error) {
     if (error instanceof AgenticRectificationProfileError) {
-      const missingBirthTime = error.code === "missing_birth_time";
+      if (error.code === "profile_unavailable") {
+        return NextResponse.json(
+          { error: "暂时无法核对出生资料", message: "请稍后重试。" },
+          { status: 503 },
+        );
+      }
       return NextResponse.json(
         {
-          error: missingBirthTime ? "出生时间信息不完整" : "暂时无法核对出生资料",
-          message: missingBirthTime
-            ? "请先在资料页保存出生日期、填报时间和出生地点后再开始校正。"
-            : "出生日期、时间或出生地点资料不完整，请重新保存后再试。",
+          code: "profile_incomplete",
+          error: "出生资料尚未完成",
+          message: "请先完成出生日期、出生时间线索和出生地点资料。",
         },
-        { status: 400 },
+        { status: 409 },
       );
     }
     return NextResponse.json(
@@ -206,7 +223,7 @@ export async function POST(request: Request) {
             content: [
               currentTimeContext(requestTime),
               parsed.data.name ? `用户称呼：${parsed.data.name}` : "",
-              parsed.data.message,
+              parsed.data.action === "opening" ? openingContext : parsed.data.message,
             ].filter(Boolean).join("\n"),
           },
         ]);
diff --git a/frontend/src/app/page.tsx b/frontend/src/app/page.tsx
index 2a941d8b..a0caf63c 100644
--- a/frontend/src/app/page.tsx
+++ b/frontend/src/app/page.tsx
@@ -15,7 +15,6 @@ import {
 import { BirthTimeIntakeFields } from "@/components/birth-time-intake";
 import { AppLoadingIndicator } from "@/components/app-loading-indicator";
 import { ConversationalBirthTimeRectification } from "@/components/conversational-birth-time-rectification";
-import type { RectificationV4Continuation } from "@/components/rectification-v4-panel";
 import { ChatMessageContent } from "@/components/chat-message-content";
 import { AgentAvatar, ChatMessageRow } from "@/components/chat-message-row";
 import { ModelSelector } from "@/components/model-selector";
@@ -54,7 +53,6 @@ import {
   type RectificationCardAction,
 } from "@/lib/birth-time-consultation-consent";
 import type { ConsultationBirthTimeMode } from "@/lib/consultation-birth-time-mode";
-import { claimRectificationV4Handoff } from "@/lib/rectification-v4/client";
 import {
   createRectificationQuestionHandoffCoordinator,
 } from "@/lib/rectification-question-handoff";
@@ -946,11 +944,9 @@ export default function Home() {
     createBirthTimeConsultationConsentState,
   );
   const [rectificationSessionId, setRectificationSessionId] = useState<string | null>(null);
-  const [rectificationReturnSessionId, setRectificationReturnSessionId] = useState<string | null>(null);
   const [rectificationPendingQuestion, setRectificationPendingQuestion] = useState<string | null>(null);
   const [rectificationLoading, setRectificationLoading] = useState(false);
   const [rectificationMutationPending, setRectificationMutationPending] = useState(false);
-  const [rectificationContinuationPending, setRectificationContinuationPending] = useState(false);
   const [rectificationError, setRectificationError] = useState("");
   const [hydrated, setHydrated] = useState(false);
   const [profileSaving, setProfileSaving] = useState(false);
@@ -990,7 +986,6 @@ export default function Home() {
   const rectificationQuestionHandoff = useRef(createRectificationQuestionHandoffCoordinator<Theme>());
   const resumeRectificationSession = useRef<(session: ChatSession) => void>(() => undefined);
   const rectificationOpenInFlight = useRef(false);
-  const rectificationContinuationInFlight = useRef(false);
   const uiPreview = useRef(false);
   const uiPreviewMode = useRef<string | null>(null);
   const birthTimeRevisionPending = useRef(false);
@@ -1016,7 +1011,6 @@ export default function Home() {
     || cancellationPending
     || creatingSession
     || rectificationMutationPending
-    || rectificationContinuationPending
     || !account
     || !modelCatalog;
   const activeStreamingText = streamingReply && streamingReply.sessionId === activeSession?.id ? streamingReply.text : "";
@@ -1041,8 +1035,7 @@ export default function Home() {
       || activeSession.id === rectificationSessionId
       || rectificationLoading
       || rectificationMutationPending
-      || rectificationContinuationPending
-      || creatingSession
+        || creatingSession
       || rectificationError) return;
     resumeRectificationSession.current(activeSession);
   }, [
@@ -1051,7 +1044,6 @@ export default function Home() {
     creatingSession,
     hydrated,
     modelCatalog,
-    rectificationContinuationPending,
     rectificationError,
     rectificationLoading,
     rectificationMutationPending,
@@ -2032,7 +2024,15 @@ export default function Home() {
     sourceSessionOverride: ChatSession | null = null,
   ) {
     if (!account || !modelCatalog || creatingSession || rectificationLoading || rectificationOpenInFlight.current
-      || rectificationMutationPending || rectificationContinuationInFlight.current) return;
+      || rectificationMutationPending) return;
+    const missingStep = missingProfileStep(profile);
+    if (missingStep) {
+      setRectificationSessionId(null);
+      setRectificationPendingQuestion(null);
+      setOnboardingStep(missingStep);
+      setComposerNotice("请先完成出生资料，再开始生时校正。");
+      return;
+    }
     const sourceSession = sourceSessionOverride ?? activeSession;
     if (!sourceSession) return;
     const existing = sourceSession.sessionType === "birth_time_rectification"
@@ -2048,7 +2048,6 @@ export default function Home() {
     setDraft("");
     setDraftTheme(null);
     setDraftEntrypoint(null);
-    if (sourceSession.id !== rectificationSession.id) setRectificationReturnSessionId(sourceSession.id);
     setRectificationSessionId(rectificationSession.id);
     activeSessionIdRef.current = rectificationSession.id;
     setActiveSessionId(rectificationSession.id);
@@ -2073,6 +2072,20 @@ export default function Home() {
     void openBirthTimeRectification(null, session);
   };
 
+  function handleRectificationProfileIncomplete() {
+    setRectificationSessionId(null);
+    setRectificationPendingQuestion(null);
+    const missingStep = missingProfileStep(profile);
+    if (missingStep) {
+      setOnboardingStep(missingStep);
+      setComposerNotice("请先完成出生资料，再开始生时校正。");
+      return;
+    }
+    openAccountDialog("profile");
+    setProfileNotice("服务端未能读取完整出生资料，请重新确认并保存。");
+    void refreshAccount();
+  }
+
   async function draftSynastryQuestionFromChart(record: ChartLibraryRecord, relationshipType: SynastryRelationshipType) {
     if (record.role !== "other") return;
     if (synastryPendingId) return;
@@ -2585,96 +2598,6 @@ export default function Home() {
   }
 
 
-  async function continueRectificationOriginalQuestion(continuation: RectificationV4Continuation) {
-    const question = continuation.question;
-    if (rectificationContinuationInFlight.current || rectificationMutationPending
-      || rectificationLoading || !activeSession || !account) return;
-    if (account.credits <= 0) {
-      openAccountDialog("redeem", creditTrigger.current);
-      return;
-    }
-    if (rectificationQuestionHandoff.current.peek()
-      && !sessions.some((session) => session.id === rectificationQuestionHandoff.current.peek()?.sessionId)) {
-      rectificationQuestionHandoff.current.clear();
-    }
-    const localHandoff = rectificationQuestionHandoff.current.peek();
-    const returnSession = (localHandoff
-      ? sessions.find((session) => session.id === localHandoff.sessionId)
-      : null)
-      ?? (rectificationReturnSessionId
-        ? sessions.find((session) => session.id === rectificationReturnSessionId)
-        : null)
-      ?? sessions.find((session) => session.sessionType === "consultation")
-      ?? null;
-    if (!returnSession) {
-      setComposerNotice("没有找到原问题所在的会话，请从会话列表打开原问题后重试。");
-      return;
-    }
-
-    rectificationContinuationInFlight.current = true;
-    setRectificationContinuationPending(true);
-    setRectificationError("");
-    try {
-      const durableClaim = await claimRectificationV4Handoff({
-        caseId: continuation.caseId,
-        caseVersion: continuation.caseVersion,
-        question,
-      });
-      if (durableClaim.status === "in_progress") {
-        setComposerNotice("原问题正在另一设备继续回答；完成后刷新即可查看，不会重复扣点。");
-        return;
-      }
-      if (durableClaim.status === "consumed") {
-        activeSessionIdRef.current = returnSession.id;
-        setActiveSessionId(returnSession.id);
-        setRectificationPendingQuestion(null);
-        setComposerNotice("原问题已经继续回答，不会再次发送或扣点。");
-        return;
-      }
-      if (durableClaim.status !== "claimed") {
-        setComposerNotice("原问题仍保留，请刷新校正状态后重试。");
-        return;
-      }
-      const completed = await rectificationQuestionHandoff.current.continueOriginalQuestion(
-        question,
-        { sessionId: returnSession.id, theme: returnSession.theme },
-        async (context) => {
-          activeSessionIdRef.current = context.sessionId;
-          setActiveSessionId(context.sessionId);
-          setBirthTimeConsultationConsent((current) => clearBirthTimeConsultationConsent(
-            current,
-            context.sessionId,
-          ));
-          return send(
-            context.question,
-            context.theme,
-            null,
-            null,
-            context.sessionId,
-            {
-              protocol: "rectification-evidence-v4",
-              caseId: durableClaim.caseId,
-              caseVersion: durableClaim.caseVersion,
-              claimActionId: durableClaim.claimActionId,
-              requestId: durableClaim.requestId,
-            },
-          );
-        },
-      );
-      if (completed) {
-        setRectificationPendingQuestion(null);
-        setComposerNotice("已按候选范围边界继续回答原问题。");
-      } else {
-        setComposerNotice("原问题仍保留，可再次点击继续回答。");
-      }
-    } catch {
-      setComposerNotice("原问题仍保留，可再次点击继续回答。");
-    } finally {
-      rectificationContinuationInFlight.current = false;
-      setRectificationContinuationPending(false);
-    }
-  }
-
   useGSAP(() => {
     if (!starterHomeVisible || !starterWorkbench.current) return;
     const motion = gsap.matchMedia();
@@ -3035,9 +2958,8 @@ export default function Home() {
             selectedModelId={activeSession?.modelId ?? ""}
             onSelectModel={(modelId) => void selectSessionModel(modelId)}
             pendingConsultationQuestion={rectificationPendingQuestion}
-            continuationPending={rectificationContinuationPending}
             onPendingChange={setRectificationMutationPending}
-            onContinueOriginalQuestion={(continuation) => void continueRectificationOriginalQuestion(continuation)}
+            onProfileIncomplete={handleRectificationProfileIncomplete}
             onSaved={() => void refreshAccount()}
           />
         )}
diff --git a/frontend/src/components/conversational-birth-time-rectification.tsx b/frontend/src/components/conversational-birth-time-rectification.tsx
index 44025993..f731dbb5 100644
--- a/frontend/src/components/conversational-birth-time-rectification.tsx
+++ b/frontend/src/components/conversational-birth-time-rectification.tsx
@@ -1,119 +1,18 @@
 "use client";
 
-import { useEffect, useState } from "react";
-import { loadActiveRectificationV4, transitionRectificationV4 } from "../lib/rectification-v4/client.ts";
-import type { RectificationV4ApiResponse } from "../lib/rectification-v4/contracts.ts";
 import type { PublicLanguageModel } from "../lib/public-models.ts";
 import { AgenticRectificationChat } from "./rectification-agentic-chat.tsx";
-import { ChatMessageRow } from "./chat-message-row.tsx";
-import {
-  RectificationV4Panel,
-  type RectificationV4Continuation,
-} from "./rectification-v4-panel.tsx";
 
 export type ConversationalBirthTimeRectificationProps = Readonly<{
   models: readonly PublicLanguageModel[];
   selectedModelId: string;
   onSelectModel: (modelId: string) => void;
   pendingConsultationQuestion?: string | null;
-  continuationPending?: boolean;
   onPendingChange?: (pending: boolean) => void;
-  onContinueOriginalQuestion?: (continuation: RectificationV4Continuation) => void;
+  onProfileIncomplete?: () => void;
   onSaved?: (time: string) => void;
 }>;
 
-/**
- * Birth-time rectification surface.
- *
- * Lets the user explicitly continue or end an existing v4 evidence case, and
- * otherwise opens the agentic chat where the LLM drives the full Jyotish
- * rectification methodology with the engine as its computation layer.
- */
 export function ConversationalBirthTimeRectification(props: ConversationalBirthTimeRectificationProps) {
-  const [mode, setMode] = useState<"loading" | "choice" | "v4" | "agentic">("loading");
-  const [existing, setExisting] = useState<RectificationV4ApiResponse | null>(null);
-  const [switching, setSwitching] = useState(false);
-  const [switchError, setSwitchError] = useState("");
-
-  useEffect(() => {
-    let mounted = true;
-    void (async () => {
-      const existing = await loadActiveRectificationV4().catch(() => null);
-      if (mounted) {
-        setExisting(existing);
-        setMode(existing ? "choice" : "agentic");
-      }
-    })();
-    return () => { mounted = false; };
-  }, []);
-
-  if (mode === "loading") {
-    return (
-      <section className="conversation" aria-label="生时校正对话" aria-busy>
-        <div className="message-list" aria-live="polite">
-          <ChatLoadingRow />
-          <div />
-        </div>
-      </section>
-    );
-  }
-
-  if (mode === "choice" && existing) {
-    const startAgentic = async () => {
-      setSwitching(true);
-      setSwitchError("");
-      try {
-        await transitionRectificationV4(existing.case.id, existing.case.version, "abandon");
-        setMode("agentic");
-      } catch {
-        setSwitchError("无法结束旧版校正，请稍后再试。");
-      } finally {
-        setSwitching(false);
-      }
-    };
-    return (
-      <>
-        <section className="conversation" aria-label="生时校正版本选择" aria-busy={switching}>
-          <div className="message-list" aria-live="polite">
-            <ChatMessageRow
-              message={{
-                role: "assistant",
-                text: "检测到一段尚未结束的旧版生时校正。你可以继续保留进度，或结束旧版并使用新版 Agent 重新开始。",
-                renderKey: "rectification-version-choice",
-                state: "settled",
-              }}
-            />
-            {switchError && <p className="error-message" role="alert">{switchError}</p>}
-          </div>
-        </section>
-        <div className="composer-wrap">
-          <div className="composer-suggestions" aria-label="选择生时校正版本">
-            <button type="button" disabled={switching} onClick={() => setMode("v4")}>继续旧版校正</button>
-            <button type="button" disabled={switching} onClick={() => void startAgentic()}>
-              {switching ? "正在结束旧版校正…" : "结束旧版并使用新版 Agent"}
-            </button>
-          </div>
-        </div>
-      </>
-    );
-  }
-
-  if (mode === "v4") {
-    return <RectificationV4Panel {...props} onUseAgentic={() => setMode("agentic")} />;
-  }
-
   return <AgenticRectificationChat {...props} />;
 }
-
-function ChatLoadingRow() {
-  return (
-    <ChatMessageRow
-      message={{
-        role: "assistant",
-        text: "",
-        renderKey: "agentic-loading",
-        state: "thinking",
-      }}
-    />
-  );
-}
diff --git a/frontend/src/components/rectification-agentic-chat.tsx b/frontend/src/components/rectification-agentic-chat.tsx
index a2413fa7..63005ab1 100644
--- a/frontend/src/components/rectification-agentic-chat.tsx
+++ b/frontend/src/components/rectification-agentic-chat.tsx
@@ -15,15 +15,19 @@ type AgenticRectificationChatProps = Readonly<{
   selectedModelId: string;
   onSelectModel: (modelId: string) => void;
   pendingConsultationQuestion?: string | null;
-  continuationPending?: boolean;
   onPendingChange?: (pending: boolean) => void;
+  onProfileIncomplete?: () => void;
   onSaved?: (time: string) => void;
 }>;
 
 type RenderMessage = ChatMessageView;
 
 const savedSentinel = /<!--AYANAM_RECTIFICATION_SAVED:(\d{2}:\d{2})-->/;
-const agenticOpeningInstruction = "用户刚进入生时校正会话。不要复述本指令；请先调用 rectification-gate 核对现有出生资料，然后用简体中文自然说明接下来的校正方式，并只提出一个最适合开始核对的人生事件问题。";
+
+type AgenticRectificationRequest = Readonly<
+  | { action: "opening" }
+  | { action: "message"; message: string }
+>;
 
 export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
   const {
@@ -32,6 +36,7 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
     onSelectModel,
     pendingConsultationQuestion,
     onPendingChange,
+    onProfileIncomplete,
     onSaved,
   } = props;
   const pendingQuestion = pendingConsultationQuestion?.trim();
@@ -64,9 +69,9 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
     });
   }, [busy, error, messages.length, savedTime]);
 
-  const send = useCallback(async (question: string, showUserMessage = true) => {
-    const trimmed = question.trim();
-    if (!trimmed || busy) return;
+  const send = useCallback(async (request: AgenticRectificationRequest, showUserMessage = true) => {
+    const trimmed = request.action === "message" ? request.message.trim() : "";
+    if ((request.action === "message" && !trimmed) || busy) return;
     setError("");
     setSavedTime(null);
     setSuggestions([]);
@@ -83,7 +88,9 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
 
     setMessages((current) => [
       ...current,
-      ...(showUserMessage ? [{ role: "user", text: trimmed, renderKey: userRenderKey, state: "settled" } satisfies RenderMessage] : []),
+      ...(showUserMessage && request.action === "message"
+        ? [{ role: "user", text: trimmed, renderKey: userRenderKey, state: "settled" } satisfies RenderMessage]
+        : []),
       { role: "assistant", text: "", renderKey: assistantRenderKey, state: "thinking" },
     ]);
     setDraft("");
@@ -93,11 +100,21 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
       const response = await fetch("/api/rectification/agent", {
         method: "POST",
         headers: { "content-type": "application/json" },
-        body: JSON.stringify({ requestId, modelId: selectedModelId, history, message: trimmed }),
+        body: JSON.stringify({
+          requestId,
+          modelId: selectedModelId,
+          history,
+          action: request.action,
+          ...(request.action === "message" ? { message: trimmed } : {}),
+        }),
       });
       if (!response.ok) {
         const payload = await response.json().catch(() => null);
         const message = payload?.message || payload?.error || `请求失败（${response.status}）`;
+        if (payload?.code === "profile_incomplete") {
+          onProfileIncomplete?.();
+          return;
+        }
         if (response.status === 402) setError(`咨询点数不足：${message}`);
         else if (response.status === 401) setError("请先登录。");
         else setError(message);
@@ -156,17 +173,17 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
     } finally {
       setPending(false);
     }
-  }, [busy, messages, onSaved, selectedModelId, setPending]);
+  }, [busy, messages, onProfileIncomplete, onSaved, selectedModelId, setPending]);
 
   useEffect(() => {
     if (openingStarted.current) return;
     openingStarted.current = true;
-    void send(agenticOpeningInstruction, false);
+    void send({ action: "opening" }, false);
   }, [send]);
 
   async function submit(event: React.FormEvent) {
     event.preventDefault();
-    await send(draft);
+    await send({ action: "message", message: draft });
   }
 
   const canSend = !busy;
@@ -190,7 +207,7 @@ export function AgenticRectificationChat(props: AgenticRectificationChatProps) {
         {suggestions.length > 0 && !busy && (
           <div className="composer-suggestions" aria-label="推荐继续提问">
             {suggestions.map((question) => (
-              <button key={question} type="button" onClick={() => void send(question)}>{question}</button>
+              <button key={question} type="button" onClick={() => void send({ action: "message", message: question })}>{question}</button>
             ))}
           </div>
         )}
diff --git a/frontend/src/lib/rectification-agentic/session.ts b/frontend/src/lib/rectification-agentic/session.ts
index 2faaa1a3..470a3de9 100644
--- a/frontend/src/lib/rectification-agentic/session.ts
+++ b/frontend/src/lib/rectification-agentic/session.ts
@@ -25,7 +25,8 @@ export class AgenticRectificationProfileError extends Error {
 
 export type AgenticRectificationProfile = Readonly<{
   birth_date: string;
-  reported_time: string;
+  reported_time: string | null;
+  candidateRange: AgenticRectificationContext["candidateRange"];
   lat: number;
   lon: number;
   tz: number;
@@ -35,10 +36,59 @@ export type AgenticRectificationProfile = Readonly<{
 }>;
 
 const timeValue = (value: unknown): string | null => {
-  if (typeof value !== "string" || !value) return null;
-  return value.length >= 5 ? value.slice(0, 5) : null;
+  const time = typeof value === "string" ? value.slice(0, 5) : "";
+  return /^([01]\d|2[0-3]):[0-5]\d$/.test(time) ? time : null;
 };
 
+const periodRanges = {
+  early_morning: { start_time: "04:00", end_time: "07:59" },
+  morning: { start_time: "08:00", end_time: "11:59" },
+  afternoon: { start_time: "12:00", end_time: "17:59" },
+  evening: { start_time: "18:00", end_time: "22:59" },
+  late_night: { start_time: "23:00", end_time: "03:59" },
+} as const;
+
+function shiftedTime(time: string, offsetMinutes: number): string {
+  const [hour = 0, minute = 0] = time.split(":").map(Number);
+  const normalized = ((hour * 60 + minute + offsetMinutes) % 1_440 + 1_440) % 1_440;
+  return `${String(Math.floor(normalized / 60)).padStart(2, "0")}:${String(normalized % 60).padStart(2, "0")}`;
+}
+
+function candidateRangeFrom(input: {
+  activeTime: string | null;
+  reportedTime: string | null;
+  source: string;
+  period: unknown;
+  uncertaintyBefore: number | null;
+  uncertaintyAfter: number | null;
+}): AgenticRectificationContext["candidateRange"] {
+  const referenceTime = input.activeTime ?? input.reportedTime;
+  if (referenceTime) {
+    const fallback = input.source === "hospital_record" || input.source === "hospital"
+      ? 2
+      : input.source === "family_exact" || input.source === "family_clear"
+        ? 15
+        : input.source === "approximate" || input.source === "family_vague"
+          ? 60
+          : 2;
+    return {
+      start_time: shiftedTime(referenceTime, -(input.uncertaintyBefore ?? fallback)),
+      end_time: shiftedTime(referenceTime, input.uncertaintyAfter ?? fallback),
+    };
+  }
+  if (input.source === "period_only" || input.source === "legacy_import") {
+    const period = typeof input.period === "string"
+      ? periodRanges[input.period as keyof typeof periodRanges]
+      : null;
+    if (period) return period;
+    if (input.source === "period_only") throw new AgenticRectificationProfileError("missing_birth_time_period");
+  }
+  if (input.source === "unknown" || input.source === "legacy_import") {
+    return { start_time: "00:00", end_time: "23:59" };
+  }
+  throw new AgenticRectificationProfileError("missing_birth_time");
+}
+
 function declaredAccuracyFrom(uncertaintyBefore: number | null, uncertaintyAfter: number | null, timeSource: string | null): AgenticRectificationContext["declaredAccuracy"] {
   const before = uncertaintyBefore ?? 0;
   const after = uncertaintyAfter ?? 0;
@@ -50,16 +100,21 @@ function declaredAccuracyFrom(uncertaintyBefore: number | null, uncertaintyAfter
     return "unknown";
   }
   switch (timeSource) {
-    case "hospital": return "minute";
-    case "family_clear": return "15min";
-    case "family_vague": return "1hour";
+    case "hospital":
+    case "hospital_record": return "minute";
+    case "family_clear":
+    case "family_exact": return "15min";
+    case "family_vague":
+    case "approximate": return "1hour";
     default: return "unknown";
   }
 }
 
 function timeSourceFrom(value: unknown): AgenticRectificationContext["timeSource"] {
   const source = typeof value === "string" ? value.trim() : "";
-  if (source === "hospital" || source === "family_clear" || source === "family_vague") return source;
+  if (source === "hospital" || source === "hospital_record") return "hospital";
+  if (source === "family_clear" || source === "family_exact") return "family_clear";
+  if (source === "family_vague" || source === "approximate" || source === "period_only") return "family_vague";
   return "unknown";
 }
 
@@ -82,10 +137,8 @@ export async function loadAgenticRectificationProfile(
   if (!/^\d{4}-\d{2}-\d{2}$/.test(birthDate)) {
     throw new AgenticRectificationProfileError("missing_birth_date");
   }
-  const reportedTime = timeValue(data.active_birth_time ?? data.reported_birth_time);
-  if (!reportedTime || !/^\d{2}:\d{2}$/.test(reportedTime)) {
-    throw new AgenticRectificationProfileError("missing_birth_time");
-  }
+  const activeTime = timeValue(data.active_birth_time);
+  const reportedTime = timeValue(data.reported_birth_time);
   const lat = numberOrNull(data.latitude);
   const lon = numberOrNull(data.longitude);
   const tz = numberOrNull(data.timezone_offset);
@@ -95,16 +148,25 @@ export async function loadAgenticRectificationProfile(
   const timeSource = timeSourceFrom(data.birth_time_source);
   const uncertaintyBefore = numberOrNull(data.uncertainty_before_minutes);
   const uncertaintyAfter = numberOrNull(data.uncertainty_after_minutes);
+  const candidateRange = candidateRangeFrom({
+    activeTime,
+    reportedTime,
+    source: typeof data.birth_time_source === "string" ? data.birth_time_source.trim() : "",
+    period: data.birth_time_period,
+    uncertaintyBefore,
+    uncertaintyAfter,
+  });
 
   return {
     birth_date: birthDate,
-    reported_time: reportedTime,
+    reported_time: activeTime ?? reportedTime,
+    candidateRange,
     lat,
     lon,
     tz,
     declaredAccuracy: declaredAccuracyFrom(uncertaintyBefore, uncertaintyAfter, data.birth_time_source),
     timeSource,
-    baselineActiveTime: timeValue(data.active_birth_time),
+    baselineActiveTime: activeTime,
   };
 }
 
@@ -122,6 +184,7 @@ export function createAgenticRectificationContext(
       lon: profile.lon,
       tz: profile.tz,
     },
+    candidateRange: profile.candidateRange,
     declaredAccuracy: profile.declaredAccuracy,
     timeSource: profile.timeSource,
     async applyConfirmedBirthTime(time) {
diff --git a/frontend/src/mastra/agentic-rectification.ts b/frontend/src/mastra/agentic-rectification.ts
index eda7f772..179c39c5 100644
--- a/frontend/src/mastra/agentic-rectification.ts
+++ b/frontend/src/mastra/agentic-rectification.ts
@@ -12,7 +12,7 @@ Write in concise Simplified Chinese as a natural conversation. Acknowledge what
 METHODOLOGY
 - Load and follow the jyotish-vedic-astrology skill before every substantive step. Its references (birth-time-rectification-advanced.md, birth-time-rectification-decision-tree.md, oracle overlays) are your method source.
 - ALL computation goes through the provided engine tools: rectification-gate, rectification-scan, rectification-score, rectification-diagnostics, rectification-candidate-features, rectification-confirm. Never invent a candidate time, score, date, divisional-chart fact, or birth minute in prose.
-- Workflow: run rectification-gate first to learn the starting accuracy and which dated events are most valuable. Then collect dated life events conversationally (the user narrates; ask for a date when the event is not dated, but do not press endlessly). Then run rectification-scan to see how layers change minute-to-minute, rectification-score to see candidate minutes, rectification-diagnostics to see what is weak, and ask one or two natural follow-ups to fill the weakest domain or the most unstable event. Re-score. When the candidate is stable across events and domains, run rectification-confirm.
+- Workflow: run rectification-gate first to learn the server-owned candidate_range, starting accuracy, and which dated events are most valuable. Always reuse that exact candidate_range in later tools; never create or widen one yourself. Then collect dated life events conversationally (the user narrates; ask for a date when the event is not dated, but do not press endlessly). Then run rectification-scan when available, rectification-score to see candidate minutes, rectification-diagnostics to see what is weak, and ask one or two natural follow-ups to fill the weakest domain or the most unstable event. Re-score. When the candidate is stable across events and domains, run rectification-confirm.
 - Use the decision tree: Dasha plus dated events establish the frame; D9 and D10 are core for relationship and career; D4/D24/D2/D11/D7/D30 are topic-specific; D60 is reference-only and never drives a conclusion.
 - Keep event ids stable: reuse the same id for the same life event in every tool call.
 
diff --git a/frontend/src/mastra/rectification-tools.ts b/frontend/src/mastra/rectification-tools.ts
index 6d86124a..9caa885d 100644
--- a/frontend/src/mastra/rectification-tools.ts
+++ b/frontend/src/mastra/rectification-tools.ts
@@ -23,16 +23,22 @@ const timePattern = /^\d{2}:\d{2}$/;
 /** Birth fields supplied by the server from the user profile (never by the LLM). */
 export type AgenticRectificationBirth = Readonly<{
   birth_date: string;
-  reported_time: string;
+  reported_time: string | null;
   lat: number;
   lon: number;
   tz: number;
 }>;
 
+export type AgenticRectificationCandidateRange = Readonly<{
+  start_time: string;
+  end_time: string;
+}>;
+
 export type AgenticRectificationContext = Readonly<{
   userId: string;
   engineBase?: string;
   birth: AgenticRectificationBirth;
+  candidateRange: AgenticRectificationCandidateRange;
   declaredAccuracy?: "minute" | "15min" | "1hour" | "unknown";
   timeSource?: "hospital" | "family_clear" | "family_vague" | "unknown";
   applyConfirmedBirthTime: (time: string) => Promise<Readonly<{
@@ -61,6 +67,33 @@ export const candidateRangeSchema = z.object({
   end_time: z.string().regex(timePattern),
 });
 
+function clockMinute(value: string): number {
+  const [hour = 0, minute = 0] = value.split(":").map(Number);
+  return hour * 60 + minute;
+}
+
+function rangeScanWindow(range: AgenticRectificationCandidateRange) {
+  const start = clockMinute(range.start_time);
+  let end = clockMinute(range.end_time);
+  if (end < start) end += 1_440;
+  const width = end - start;
+  const center = Math.round((start + end) / 2) % 1_440;
+  return {
+    width,
+    centerTime: `${String(Math.floor(center / 60)).padStart(2, "0")}:${String(center % 60).padStart(2, "0")}`,
+    uncertaintyMinutes: Math.max(1, Math.ceil(width / 2)),
+  };
+}
+
+function requireServerCandidateRange(
+  requested: AgenticRectificationCandidateRange,
+  serverOwned: AgenticRectificationCandidateRange,
+) {
+  if (requested.start_time !== serverOwned.start_time || requested.end_time !== serverOwned.end_time) {
+    throw new Error(`candidate_range_mismatch: use ${serverOwned.start_time}-${serverOwned.end_time}`);
+  }
+}
+
 const defaultEventKind: Record<RectificationDomain, string> = {
   education: "education_milestone",
   relocation: "relocation",
@@ -226,6 +259,24 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       time_source: z.enum(["hospital", "family_clear", "family_vague", "unknown"]).optional(),
     }).strict(),
     execute: async (input) => {
+      if (!ctx.birth.reported_time) {
+        return {
+          endpoint: "server_owned_rectification_preflight",
+          effective_accuracy: ctx.declaredAccuracy ?? "unknown",
+          candidate_range: ctx.candidateRange,
+          lagna_boundary: { is_sensitive: null, note: "requires_dated_event_scoring_across_candidate_range" },
+          enabled_vargas: {},
+          summary: {
+            headline: "broad_candidate_range",
+            enabled: [],
+            warned: ["candidate_range_requires_event_scoring"],
+            disabled: ["single_minute_precision_claims"],
+            confidence_floor: "low",
+            recommended_events: ["education", "career", "relationship", "relocation"],
+            next_action: "collect one clearly dated life event",
+          },
+        };
+      }
       const body = {
         year: Number(ctx.birth.birth_date.slice(0, 4)),
         month: Number(ctx.birth.birth_date.slice(5, 7)),
@@ -245,6 +296,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       return {
         endpoint: data.endpoint,
         effective_accuracy: data.effective_accuracy,
+        candidate_range: ctx.candidateRange,
         lagna_boundary: data.lagna_boundary,
         enabled_vargas: data.enabled_vargas,
         summary: {
@@ -263,22 +315,30 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
   const scanTool = createTool({
     id: "rectification-scan",
     description:
-      "Scan how chart layers (D1/D4/D9/D10/D24/D30 ascendants, arudhas, KP cusps) change minute-to-minute across the candidate window around the reported birth time. Use this to understand which layers are sensitive and where transitions happen.",
+      "Scan how chart layers change minute-to-minute across the server-owned candidate range. Wide ranges are deferred until dated-event scoring narrows the evidence.",
     inputSchema: z.object({
-      uncertainty_minutes: z.number().int().min(1).max(180).optional(),
       step_minutes: z.number().int().min(1).max(30).optional(),
     }).strict(),
     execute: async (input) => {
+      const scanWindow = rangeScanWindow(ctx.candidateRange);
+      if (scanWindow.width > 360) {
+        return {
+          scope: "candidate_time_sensitivity_scan",
+          status: "deferred_wide_range",
+          candidate_range: ctx.candidateRange,
+          boundary: "Collect dated events and score the server-owned full range before running a local sensitivity scan.",
+        };
+      }
       const body = {
         year: Number(ctx.birth.birth_date.slice(0, 4)),
         month: Number(ctx.birth.birth_date.slice(5, 7)),
         day: Number(ctx.birth.birth_date.slice(8, 10)),
-        hour: Number(ctx.birth.reported_time.slice(0, 2)),
-        minute: Number(ctx.birth.reported_time.slice(3, 5)),
+        hour: Number(scanWindow.centerTime.slice(0, 2)),
+        minute: Number(scanWindow.centerTime.slice(3, 5)),
         lat: ctx.birth.lat,
         lon: ctx.birth.lon,
         tz: ctx.birth.tz,
-        time_uncertainty_minutes: input.uncertainty_minutes,
+        time_uncertainty_minutes: scanWindow.uncertaintyMinutes,
         step_minutes: input.step_minutes,
       };
       const data = await postEngine(base, "/api/rectification/sensitivity_scan", body);
@@ -286,6 +346,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       return {
         scope: data.scope,
         status: data.status,
+        candidate_range: ctx.candidateRange,
         center_time: data.center_time,
         uncertainty_minutes: data.uncertainty_minutes,
         step_minutes: data.step_minutes,
@@ -326,6 +387,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       events: z.array(agenticRectificationEventSchema).min(1).max(40),
     }).strict(),
     execute: async (input) => {
+      requireServerCandidateRange(input.candidate_range, ctx.candidateRange);
       const data = await postEngine(base, "/api/rectification/v5/score", v5Request(ctx, input.candidate_range, input.events));
       return compactScoreResult(data);
     },
@@ -340,6 +402,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       events: z.array(agenticRectificationEventSchema).min(1).max(40),
     }).strict(),
     execute: async (input) => {
+      requireServerCandidateRange(input.candidate_range, ctx.candidateRange);
       const data = await postEngine(base, "/api/rectification/v5/diagnostics", v5Request(ctx, input.candidate_range, input.events));
       const diagnostics = (data.diagnostics && typeof data.diagnostics === "object")
         ? data.diagnostics as Record<string, unknown>
@@ -375,6 +438,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       candidate_range: candidateRangeSchema,
     }).strict(),
     execute: async (input) => {
+      requireServerCandidateRange(input.candidate_range, ctx.candidateRange);
       const data = await postEngine(base, "/api/rectification/v5/candidate-features", {
         birth_date: ctx.birth.birth_date,
         start_time: input.candidate_range.start_time,
@@ -408,6 +472,7 @@ export function createAgenticRectificationTools(ctx: AgenticRectificationContext
       events: z.array(agenticRectificationEventSchema).min(1).max(40),
     }).strict(),
     execute: async (input) => {
+      requireServerCandidateRange(input.candidate_range, ctx.candidateRange);
       const body = {
         birth_date: ctx.birth.birth_date,
         start_time: input.candidate_range.start_time,
diff --git a/frontend/tests/consultation-entrypoint.test.ts b/frontend/tests/consultation-entrypoint.test.ts
index 1ef7bd93..a9cf4723 100644
--- a/frontend/tests/consultation-entrypoint.test.ts
+++ b/frontend/tests/consultation-entrypoint.test.ts
@@ -78,35 +78,35 @@ test("ordinary product drafts keep the public question and clear hidden routing
   assert.match(source, /setDraft\(pending\.question\);[\s\S]*?setDraftTheme\(pending\.theme\);[\s\S]*?setDraftEntrypoint\(pending\.entrypoint\);/);
 });
 
-test("homepage birth-time card opens the v4 evidence surface instead of ordinary consultation", () => {
+test("homepage birth-time card opens the latest Agentic surface instead of ordinary consultation", () => {
   const source = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
 
   assert.match(source, /function openBirthTimeRectification/);
-  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
   assert.match(source, /<ConversationalBirthTimeRectification/);
-  assert.match(component, /<RectificationV4Panel/);
+  assert.match(component, /<AgenticRectificationChat \{\.\.\.props\} \/>/);
+  assert.doesNotMatch(component, /RectificationV4Panel|loadActiveRectificationV4|transitionRectificationV4/);
   assert.match(source, /pendingConsultationQuestion=\{rectificationPendingQuestion\}/);
   assert.doesNotMatch(source.slice(
     source.indexOf("async function openBirthTimeRectification"),
     source.indexOf("function handleConversationalRectificationTurn"),
-  ), /sendConversationalRectificationCommand/);
+  ), /sendConversationalRectificationCommand|rectification\/v4/);
   assert.doesNotMatch(source, /chooseSuggestedQuestion\([\s\S]{0,180}"birth_time_rectification"/);
   assert.doesNotMatch(source, /draftBirthTimeRectificationQuestion/);
 });
 
-test("homepage opens the v4 panel without invoking the retired v3 start command", () => {
+test("homepage mounts the Agentic surface without invoking retired rectification starters", () => {
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
-  const hook = readFileSync(new URL("../src/hooks/use-rectification-v4.ts", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
+  const chat = readFileSync(new URL("../src/components/rectification-agentic-chat.tsx", import.meta.url), "utf8");
   const start = page.indexOf("async function openBirthTimeRectification");
   const end = page.indexOf("function handleConversationalRectificationTurn", start);
   const handler = page.slice(start, end);
 
-  assert.doesNotMatch(handler, /sendConversationalRectificationCommand/);
-  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
+  assert.doesNotMatch(handler, /sendConversationalRectificationCommand|loadRectificationV4Handoff|createRectificationV4/);
   assert.match(page, /<ConversationalBirthTimeRectification/);
-  assert.match(component, /<RectificationV4Panel/);
-  assert.match(hook, /await loadRectificationV4Handoff\(\)/);
-  assert.match(hook, /await createRectificationV4\(\)/);
+  assert.match(component, /<AgenticRectificationChat/);
+  assert.match(chat, /void send\(\{ action: "opening" \}, false\)/);
 });
 
 test("a stale v4 mutation refreshes the same case after a 409", () => {
@@ -117,7 +117,7 @@ test("a stale v4 mutation refreshes the same case after a 409", () => {
   assert.match(hook, /loadRectificationV4\(caseId\)/);
 });
 
-test("homepage birth-time card opens its dedicated session before v4 data loads", () => {
+test("homepage birth-time card opens its dedicated session before the Agent starts", () => {
   const source = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
   const start = source.indexOf("async function openBirthTimeRectification");
   const end = source.indexOf("function handleConversationalRectificationTurn", start);
@@ -132,30 +132,32 @@ test("homepage birth-time card opens its dedicated session before v4 data loads"
   assert.ok(handler.indexOf("setSessions((current) => [") < firstAwait);
   assert.match(handler, /rectificationOpenInFlight\.current/);
   assert.match(handler, /rectificationOpenInFlight\.current = true;[\s\S]*?finally \{[\s\S]*?rectificationOpenInFlight\.current = false;/);
-  assert.match(handler, /setRectificationReturnSessionId\(sourceSession\.id\)/);
   assert.doesNotMatch(handler, /onNarrativeDelta|sendConversationalRectificationCommand/);
   assert.match(source, /const rectificationSurfaceOpen = activeRectificationSession\s*&& activeSession\.id === rectificationSessionId/);
   assert.match(source, /rectificationSurfaceOpen && \([\s\S]*?<ConversationalBirthTimeRectification[\s\S]*?pendingConsultationQuestion=\{rectificationPendingQuestion\}/);
 });
 
-test("the v4 panel owns case recovery while the page persists only the dedicated session shell", () => {
+test("the page persists only the dedicated session shell while the Agent owns opening", () => {
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
-  const hook = readFileSync(new URL("../src/hooks/use-rectification-v4.ts", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
   const start = page.indexOf("async function openBirthTimeRectification");
   const end = page.indexOf("function handleConversationalRectificationTurn", start);
   const handler = page.slice(start, end);
 
   assert.match(handler, /persistSession\(rectificationSession, "create"\)/);
-  assert.match(hook, /const existingHandoff = await loadRectificationV4Handoff\(\)/);
-  assert.match(hook, /existingHandoff[\s\S]*?loadRectificationV4\(existingHandoff\.caseId\)[\s\S]*?createRectificationV4\(\)/);
+  assert.match(component, /<AgenticRectificationChat/);
+  assert.doesNotMatch(component, /loadRectificationV4Handoff|createRectificationV4/);
 });
 
-test("a direct homepage start restores any active v4 case before creating another", () => {
-  const hook = readFileSync(new URL("../src/hooks/use-rectification-v4.ts", import.meta.url), "utf8");
+test("a direct homepage start does not restore or create a V4 case", () => {
+  const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
+  const start = page.indexOf("async function openBirthTimeRectification");
+  const end = page.indexOf("function handleConversationalRectificationTurn", start);
+  const handler = page.slice(start, end);
 
-  assert.match(hook, /const existingHandoff = await loadRectificationV4Handoff\(\)/);
-  assert.match(hook, /existingHandoff\s*\? await loadRectificationV4\(existingHandoff\.caseId\)\s*:\s*await createRectificationV4\(\)/);
-  assert.doesNotMatch(hook, /sendConversationalRectificationCommand/);
+  assert.doesNotMatch(handler, /loadRectificationV4Handoff|createRectificationV4|rectification\/v4/);
+  assert.doesNotMatch(component, /loadRectificationV4Handoff|createRectificationV4|RectificationV4Panel/);
 });
 
 test("rectification cards render only inside the active rectification session", () => {
@@ -181,28 +183,28 @@ test("selecting a rectification session resumes it without an intermediate confi
   assert.match(source, /<ConversationalBirthTimeRectification/);
 });
 
-test("homepage reuses the dedicated rectification session while v4 restores the active case", () => {
+test("homepage reuses the dedicated rectification session for the Agentic surface", () => {
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
-  const hook = readFileSync(new URL("../src/hooks/use-rectification-v4.ts", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
   const start = page.indexOf("async function openBirthTimeRectification");
   const end = page.indexOf("function handleConversationalRectificationTurn", start);
   const handler = page.slice(start, end);
 
   assert.match(handler, /sessions\.find\(\(session\) => session\.sessionType === "birth_time_rectification"\)/);
   assert.match(handler, /existing \?\? createSession/);
-  assert.match(hook, /loadRectificationV4Handoff|createRectificationV4/);
+  assert.match(component, /<AgenticRectificationChat/);
 });
 
-test("a bound rectification session and a homepage restart share the v4 active-case loader", () => {
+test("a bound rectification session and homepage restart share the same Agentic session shell", () => {
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
-  const hook = readFileSync(new URL("../src/hooks/use-rectification-v4.ts", import.meta.url), "utf8");
+  const component = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
   const start = page.indexOf("async function openBirthTimeRectification");
   const end = page.indexOf("function handleConversationalRectificationTurn", start);
   const handler = page.slice(start, end);
 
   assert.match(handler, /sourceSession\.sessionType === "birth_time_rectification"[\s\S]*?sourceSession[\s\S]*?sessions\.find/);
-  assert.match(hook, /loadRectificationV4Handoff\(\)/);
-  assert.match(hook, /loadRectificationV4\(existingHandoff\.caseId\)/);
+  assert.match(component, /<AgenticRectificationChat/);
+  assert.doesNotMatch(component, /loadRectificationV4Handoff|loadRectificationV4/);
 });
 
 test("rectify-first suggestions hand the source question to a dedicated rectification session", () => {
@@ -219,17 +221,14 @@ test("rectify-first suggestions hand the source question to a dedicated rectific
   assert.match(source, /onClick=\{\(\) => chooseConversationSuggestion\(question\)\}/);
 });
 
-test("completed handoffs return only after the user clicks and target the source session", () => {
+test("rectify-first handoffs stay as Agent context without a V4 continuation claim", () => {
   const source = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
+  const chat = readFileSync(new URL("../src/components/rectification-agentic-chat.tsx", import.meta.url), "utf8");
 
-  assert.doesNotMatch(source, /automaticRectificationContinuation/);
-  assert.match(source, /const returnSession = \(localHandoff/);
-  assert.match(source, /session\.sessionType === "consultation"/);
-  assert.match(source, /onContinueOriginalQuestion=\{\(continuation\) => void continueRectificationOriginalQuestion\(continuation\)\}/);
-  assert.match(source, /claimRectificationV4Handoff\(\{[\s\S]*?caseId: continuation\.caseId,[\s\S]*?caseVersion: continuation\.caseVersion,[\s\S]*?question/);
-  assert.match(source, /sessionId: returnSession\.id/);
-  assert.match(source, /setActiveSessionId\(context\.sessionId\)/);
-  assert.match(source, /clearBirthTimeConsultationConsent\([\s\S]*?context\.sessionId/);
+  assert.match(source, /pendingConsultationQuestion=\{rectificationPendingQuestion\}/);
+  assert.match(chat, /pendingConsultationQuestion\?\.trim\(\)/);
+  assert.match(chat, /之后再回到你原来的问题/);
+  assert.doesNotMatch(source, /onContinueOriginalQuestion|continueRectificationOriginalQuestion|claimRectificationV4Handoff/);
 });
 
 test("ordinary consultation uses current birth data without a rectification notice", () => {
diff --git a/frontend/tests/conversational-rectification-component.test.ts b/frontend/tests/conversational-rectification-component.test.ts
index 2e0a1aab..bdc9cbfe 100644
--- a/frontend/tests/conversational-rectification-component.test.ts
+++ b/frontend/tests/conversational-rectification-component.test.ts
@@ -108,56 +108,34 @@ function analysisTrace(label: string) {
   } as const;
 }
 
-test("agentic rectification requests an Agent-generated opening when the surface mounts", () => {
+test("agentic rectification requests a server-owned opening when the surface mounts", () => {
   const component = readFileSync(new URL("../src/components/rectification-agentic-chat.tsx", import.meta.url), "utf8");
 
   assert.match(component, /const openingStarted = useRef\(false\)/);
   assert.match(
     component,
-    /useEffect\(\(\) => \{[\s\S]*?openingStarted\.current = true;[\s\S]*?void send\(agenticOpeningInstruction, false\);[\s\S]*?\}, \[send\]\);/,
+    /useEffect\(\(\) => \{[\s\S]*?openingStarted\.current = true;[\s\S]*?void send\(\{ action: "opening" \}, false\);[\s\S]*?\}, \[send\]\);/,
   );
-  assert.match(component, /const send = useCallback\(async \(question: string, showUserMessage = true\) =>/);
-  assert.match(component, /\.\.\.\(showUserMessage \? \[\{ role: "user", text: trimmed, renderKey: userRenderKey, state: "settled" \} satisfies RenderMessage\] : \[\]\)/);
+  assert.match(component, /const send = useCallback\(async \(request: AgenticRectificationRequest, showUserMessage = true\) =>/);
+  assert.match(component, /showUserMessage && request\.action === "message"/);
+  assert.doesNotMatch(component, /agenticOpeningInstruction|用户刚进入生时校正会话/);
 });
 
-test("v4 rectification reuses the ordinary session message list, composer, and model selector", () => {
-  const component = readFileSync(new URL("../src/components/rectification-v4-panel.tsx", import.meta.url), "utf8");
+test("latest Agentic rectification reuses the ordinary session message list, composer, and model selector", () => {
+  const component = readFileSync(new URL("../src/components/rectification-agentic-chat.tsx", import.meta.url), "utf8");
   const wrapper = readFileSync(new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url), "utf8");
   const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
   const css = readFileSync(new URL("../src/app/globals.css", import.meta.url), "utf8");
 
-  assert.match(
-    component,
-    /<>\s*<section className="conversation"[\s\S]*?<\/section>\s*\{showControls && \(\s*<div className="composer-wrap"/,
-  );
+  assert.match(component, /<section className="conversation"/);
   assert.match(component, /className="message-list"/);
   assert.match(component, /<ChatMessageRow/);
   assert.match(component, /className="composer-wrap"/);
   assert.match(component, /className="composer"/);
   assert.match(component, /<Textarea/);
   assert.match(component, /<ModelSelector/);
-  assert.match(component, /aria-label="赞"/);
-  assert.match(component, /aria-label="踩"/);
-  assert.match(component, /aria-label="复制回答"/);
-  assert.match(component, /aria-label="重新生成回答"/);
-  assert.match(component, /<details className="rectification-analysis">/);
-  assert.match(component, /<span>分析过程<\/span>/);
-  assert.match(
-    component,
-    /<RectificationAnalysisDetails trace=\{message\.analysisTrace\} \/>[\s\S]*?<RectificationMessageRow[\s\S]*?<div className="rectification-message-actions"/,
-  );
-  assert.match(component, /caseValue\?\.deploymentMode === "v5_agent"/);
-  assert.match(component, /controller\.regenerate\(\)/);
-  assert.match(component, /controller\.answer\(answer, props\.selectedModelId \|\| null\)/);
-  assert.doesNotMatch(wrapper, /existing \? "v4" : "agentic"/);
-  assert.match(wrapper, /继续旧版校正/);
-  assert.match(wrapper, /结束旧版并使用新版 Agent/);
-  assert.match(wrapper, /transitionRectificationV4\(existing\.case\.id, existing\.case\.version, "abandon"\)/);
-  assert.match(wrapper, /<RectificationV4Panel \{\.\.\.props\} onUseAgentic=/);
-  assert.match(component, /controller\.abandon\(\)/);
-  assert.match(component, /Runtime/);
-  assert.match(component, /Deployment SHA/);
-  assert.match(component, /fallbackCode/);
+  assert.match(wrapper, /return <AgenticRectificationChat \{\.\.\.props\} \/>/);
+  assert.doesNotMatch(wrapper, /RectificationV4Panel|继续旧版校正|transitionRectificationV4/);
   assert.match(page, /\{!rectificationSurfaceOpen && \(\s*<div className=\{`conversation/);
   assert.match(page, /\{rectificationSurfaceOpen && \(\s*<ConversationalBirthTimeRectification/);
   assert.doesNotMatch(page, /is-rectification/);
diff --git a/frontend/tests/rectification-agentic-entry.test.ts b/frontend/tests/rectification-agentic-entry.test.ts
new file mode 100644
index 00000000..9323e629
--- /dev/null
+++ b/frontend/tests/rectification-agentic-entry.test.ts
@@ -0,0 +1,43 @@
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import test from "node:test";
+
+const component = readFileSync(
+  new URL("../src/components/conversational-birth-time-rectification.tsx", import.meta.url),
+  "utf8",
+);
+const chat = readFileSync(
+  new URL("../src/components/rectification-agentic-chat.tsx", import.meta.url),
+  "utf8",
+);
+const route = readFileSync(
+  new URL("../src/app/api/rectification/agent/route.ts", import.meta.url),
+  "utf8",
+);
+const page = readFileSync(new URL("../src/app/page.tsx", import.meta.url), "utf8");
+
+test("birth-time rectification entry no longer routes through V4", () => {
+  assert.doesNotMatch(component, /loadActiveRectificationV4|RectificationV4Panel|transitionRectificationV4/);
+  assert.match(component, /return <AgenticRectificationChat \{\.\.\.props\} \/>/);
+});
+
+test("opening is a server-owned operation rather than a hidden user prompt", () => {
+  assert.doesNotMatch(chat, /agenticOpeningInstruction|用户刚进入生时校正会话/);
+  assert.match(chat, /action: "opening"/);
+  assert.match(route, /z\.literal\("opening"\)/);
+  assert.match(route, /parsed\.data\.action === "opening"/);
+});
+
+test("incomplete profiles stay in the shared onboarding flow", () => {
+  const opening = page.slice(
+    page.indexOf("async function openBirthTimeRectification"),
+    page.indexOf("resumeRectificationSession.current ="),
+  );
+  assert.match(opening, /const missingStep = missingProfileStep\(profile\)/);
+  assert.match(opening, /setOnboardingStep\(missingStep\)/);
+  assert.ok(
+    opening.indexOf("const missingStep = missingProfileStep(profile)")
+      < opening.indexOf("setRectificationSessionId(rectificationSession.id)"),
+  );
+  assert.match(chat, /payload\?\.code === "profile_incomplete"/);
+});
diff --git a/frontend/tests/rectification-agentic-session.test.ts b/frontend/tests/rectification-agentic-session.test.ts
index ebdce53a..e0328d2d 100644
--- a/frontend/tests/rectification-agentic-session.test.ts
+++ b/frontend/tests/rectification-agentic-session.test.ts
@@ -52,6 +52,7 @@ test("loadAgenticRectificationProfile derives birth fields, accuracy and baselin
   const profile = await loadAgenticRectificationProfile(client as never, userId);
   assert.equal(profile.birth_date, "1990-05-12");
   assert.equal(profile.reported_time, "14:31");
+  assert.deepEqual(profile.candidateRange, { start_time: "14:21", end_time: "14:41" });
   assert.equal(profile.lat, 31.23);
   assert.equal(profile.lon, 121.47);
   assert.equal(profile.tz, 8);
@@ -68,6 +69,43 @@ test("loadAgenticRectificationProfile treats hospital source as minute accuracy"
   const profile = await loadAgenticRectificationProfile(client as never, userId);
   assert.equal(profile.declaredAccuracy, "minute");
   assert.equal(profile.timeSource, "hospital");
+  assert.deepEqual(profile.candidateRange, { start_time: "09:03", end_time: "09:07" });
+});
+
+test("loadAgenticRectificationProfile accepts a period-only declaration without a fake minute", async () => {
+  const { client } = fakeAccounting(fakeProfileRow({
+    reported_birth_time: null,
+    active_birth_time: null,
+    birth_time_source: "period_only",
+    birth_time_period: "late_night",
+  }));
+  const profile = await loadAgenticRectificationProfile(client as never, userId);
+  assert.equal(profile.reported_time, null);
+  assert.deepEqual(profile.candidateRange, { start_time: "23:00", end_time: "03:59" });
+  assert.equal(profile.declaredAccuracy, "unknown");
+});
+
+test("loadAgenticRectificationProfile accepts an unknown time as the full day", async () => {
+  const { client } = fakeAccounting(fakeProfileRow({
+    reported_birth_time: null,
+    active_birth_time: null,
+    birth_time_source: "unknown",
+  }));
+  const profile = await loadAgenticRectificationProfile(client as never, userId);
+  assert.equal(profile.reported_time, null);
+  assert.deepEqual(profile.candidateRange, { start_time: "00:00", end_time: "23:59" });
+});
+
+test("loadAgenticRectificationProfile preserves a cross-midnight uncertainty range", async () => {
+  const { client } = fakeAccounting(fakeProfileRow({
+    reported_birth_time: "00:10:00",
+    active_birth_time: null,
+    birth_time_source: "approximate",
+    uncertainty_before_minutes: 30,
+    uncertainty_after_minutes: 30,
+  }));
+  const profile = await loadAgenticRectificationProfile(client as never, userId);
+  assert.deepEqual(profile.candidateRange, { start_time: "23:40", end_time: "00:40" });
 });
 
 test("loadAgenticRectificationProfile rejects a missing birth date", async () => {
diff --git a/frontend/tests/rectification-agentic-tools.test.ts b/frontend/tests/rectification-agentic-tools.test.ts
index 8364d95b..70f7ed76 100644
--- a/frontend/tests/rectification-agentic-tools.test.ts
+++ b/frontend/tests/rectification-agentic-tools.test.ts
@@ -52,6 +52,7 @@ function makeCtx(applyConfirmedBirthTime?: AgenticRectificationContext["applyCon
     userId: "user-1",
     engineBase: "http://engine.test",
     birth,
+    candidateRange: { start_time: "14:00", end_time: "15:00" },
     declaredAccuracy: "15min",
     timeSource: "family_clear",
     applyConfirmedBirthTime: applyConfirmedBirthTime ?? (async (time) => ({ ok: true as const, saved_time: time })),
@@ -196,7 +197,7 @@ test("score tool normalizes year-precision events into the V5 date range contrac
   engine.restore();
 });
 
-test("scan tool posts the reported time and uncertainty to /api/rectification/sensitivity_scan", async () => {
+test("scan tool derives its center and uncertainty from the server-owned range", async () => {
   const engine = installEngine([
     {
       path: "/api/rectification/sensitivity_scan",
@@ -223,7 +224,7 @@ test("scan tool posts the reported time and uncertainty to /api/rectification/se
     },
   ]);
   const tools = createAgenticRectificationTools(makeCtx());
-  const result = await runTool(tools, "rectification-scan", { uncertainty_minutes: 30 });
+  const result = await runTool(tools, "rectification-scan", {});
   const sent = requestBody(engine);
   assert.equal(sent.hour, 14);
   assert.equal(sent.minute, 30);
@@ -233,6 +234,48 @@ test("scan tool posts the reported time and uncertainty to /api/rectification/se
   engine.restore();
 });
 
+test("gate keeps period-only profiles on the server-owned range without inventing a minute", async () => {
+  const engine = installEngine([]);
+  const tools = createAgenticRectificationTools({
+    ...makeCtx(),
+    birth: { ...birth, reported_time: null },
+    candidateRange: { start_time: "23:00", end_time: "03:59" },
+    declaredAccuracy: "unknown",
+  });
+  const result = await runTool(tools, "rectification-gate", {});
+  assert.equal(engine.calls.length, 0);
+  assert.equal(result.endpoint, "server_owned_rectification_preflight");
+  assert.deepEqual(result.candidate_range, { start_time: "23:00", end_time: "03:59" });
+  engine.restore();
+});
+
+test("scan defers an unknown full-day range instead of using a fake noon birth time", async () => {
+  const engine = installEngine([]);
+  const tools = createAgenticRectificationTools({
+    ...makeCtx(),
+    birth: { ...birth, reported_time: null },
+    candidateRange: { start_time: "00:00", end_time: "23:59" },
+  });
+  const result = await runTool(tools, "rectification-scan", {});
+  assert.equal(engine.calls.length, 0);
+  assert.equal(result.status, "deferred_wide_range");
+  engine.restore();
+});
+
+test("score rejects an Agent-invented range", async () => {
+  const engine = installEngine([]);
+  const tools = createAgenticRectificationTools(makeCtx());
+  await assert.rejects(
+    () => runTool(tools, "rectification-score", {
+      candidate_range: { start_time: "14:15", end_time: "14:45" },
+      events: sampleEvents,
+    }),
+    /candidate_range_mismatch/,
+  );
+  assert.equal(engine.calls.length, 0);
+  engine.restore();
+});
+
 test("save tool rejects before a confirmation gate exists", async () => {
   const engine = installEngine([]);
   const applied: string[] = [];