feat(ux): R3 验收前清单 — AcceptPanel「本次将更新」预览

新 lib/review/accept-preview.ts (buildAcceptPreview)：据现有 client state 列验收前预期项——晋升版次/提炼摘要/写回裁决/伏笔到期扫描/伏笔建议待登记。仅列后端 accept 事务确实做的事（核对 projects.py accept 端点），不声称改人物 latest_state，带「以验收回执为准」免责。
AcceptPanel 加 foreshadowCount prop + 未阻断时渲染清单；ReviewReport 传 foreshadow.length。
TDD: 4 测。前端门禁绿: lint/tsc/vitest 205/build。

apps/web/components/review/AcceptPanel.tsx

@@ -1,10 +1,13 @@
 "use client";
 
 import type { AcceptResponse } from "@/lib/api/types";
+import { buildAcceptPreview } from "@/lib/review/accept-preview";
 
 interface AcceptPanelProps {
   conflictCount: number;
   unresolvedCount: number;
+  // R3：当前伏笔建议数（验收前清单提醒，只读不自动落库）。
+  foreshadowCount: number;
   accepting: boolean;
   result: AcceptResponse | null;
   onAccept: () => void;
@@ -14,11 +17,16 @@ interface AcceptPanelProps {
 export function AcceptPanel({
   conflictCount,
   unresolvedCount,
+  foreshadowCount,
   accepting,
   result,
   onAccept,
 }: AcceptPanelProps) {
   const blocked = unresolvedCount > 0;
+  const preview = buildAcceptPreview({
+    conflictCount,
+    foreshadowSuggestions: foreshadowCount,
+  });
 
   if (result) {
     return (
@@ -56,11 +64,35 @@ export function AcceptPanel({
           尚有 {unresolvedCount} 项冲突未裁决，处理完才能验收。
         </p>
       ) : (
-        <p className="mb-2 text-xs text-ink-soft">
-          {conflictCount === 0
-            ? "无冲突，可直接验收。"
-            : "全部冲突已裁决，可验收本章。"}
-        </p>
+        <>
+          <p className="mb-2 text-xs text-ink-soft">
+            {conflictCount === 0
+              ? "无冲突，可直接验收。"
+              : "全部冲突已裁决，可验收本章。"}
+          </p>
+          {/* R3：验收前「本次将更新」清单（预期，落库口径以验收回执为准）。 */}
+          <div className="mb-3 rounded border border-line/70 bg-bg/50 p-3">
+            <h4 className="mb-1.5 text-xs font-semibold text-ink">
+              本次验收将更新
+            </h4>
+            <ul className="space-y-1.5">
+              {preview.map((item) => (
+                <li key={item.label} className="flex gap-2 text-xs text-ink-soft">
+                  <span className="text-cinnabar" aria-hidden="true">
+                    ◆
+                  </span>
+                  <span>
+                    <span className="text-ink">{item.label}</span>
+                    <span className="text-ink-soft">：{item.detail}</span>
+                  </span>
+                </li>
+              ))}
+            </ul>
+            <p className="mt-2 text-[11px] text-ink-soft/70">
+              以上为预期，最终以验收回执为准。
+            </p>
+          </div>
+        </>
       )}
       <button
         type="button"

apps/web/components/review/ReviewReport.tsx

@@ -376,6 +376,7 @@ export function ReviewReport({
             <AcceptPanel
               conflictCount={conflictCount}
               unresolvedCount={resolved ? 0 : unresolved}
+              foreshadowCount={foreshadow.length}
               accepting={accept.status === "accepting"}
               result={accept.result}
               onAccept={() => void onAccept()}