feat(foreshadow): 写作台本章伏笔主动提醒（前端）

- 新增 chapterForeshadow 纯分类：按当前章分 可回收/待回收/已逾期（启用闲置的 isWindowApproaching）
- useChapterForeshadow hook（复用 GET /foreshadow，切章仅重分类不重拉）
- 右栏「本章参考」+ ContextDrawer 伏笔页新增「本章伏笔」实时清单，
  分色展示 + 跳看板链接 + 空态；标注『按已验收进度』

apps/web/components/workbench/ChapterAssistant.tsx

@@ -1,7 +1,9 @@
 "use client";
 
 import type { ReactNode } from "react";
+import Link from "next/link";
 import {
+  ArrowUpRight,
   Minus,
   Pin,
   PinOff,
@@ -15,6 +17,9 @@ import {
 import { ThinkingIndicator } from "@/components/ThinkingIndicator";
 import { Button } from "@/components/ui/Button";
 import { StatusNote } from "@/components/ui/StatusNote";
+import { ChapterForeshadowList } from "@/components/workbench/ChapterForeshadowList";
+import { chapterForeshadowTotal } from "@/lib/foreshadow/chapterForeshadow";
+import { useChapterForeshadow } from "@/lib/foreshadow/useChapterForeshadow";
 import { buttonClass } from "@/lib/ui/variants";
 import {
   isPinned,
@@ -183,6 +188,8 @@ export function AssistantContent({ projectId, chapterNo }: ChapterAssistantProps
         ) : null}
       </section>
 
+      <ChapterForeshadowSection projectId={projectId} chapterNo={chapterNo} />
+
       <section className="mt-6 border-t border-line-soft pt-5">
         <PanelLabel>写完后检查</PanelLabel>
         <p className="mt-1.5 text-caption leading-6 text-ink-soft">
@@ -193,6 +200,55 @@ export function AssistantContent({ projectId, chapterNo }: ChapterAssistantProps
   );
 }
 
+// 「本章伏笔」主动提醒：按当前章号把伏笔分可回收 / 待回收 / 已逾期三类，
+// 让作者在写这章时就想起该回收哪条、哪条已逾期。只读，编辑走「伏笔看板」。
+function ChapterForeshadowSection({ projectId, chapterNo }: ChapterAssistantProps) {
+  const { groups, status, reload } = useChapterForeshadow(projectId, chapterNo);
+  const boardHref = `/projects/${projectId}/foreshadow`;
+  const isEmpty = chapterForeshadowTotal(groups) === 0;
+
+  return (
+    <section className="mt-6 border-t border-line-soft pt-5">
+      <PanelLabel
+        action={<span className="text-2xs text-muted-soft">按已验收进度</span>}
+      >
+        本章伏笔
+      </PanelLabel>
+
+      {status === "loading" ? (
+        <p className="mt-2 text-caption text-ink-soft">加载伏笔…</p>
+      ) : status === "error" ? (
+        <StatusNote variant="danger" className="mt-2 text-xs" title="伏笔暂不可用">
+          <button
+            type="button"
+            onClick={reload}
+            className={buttonClass({ variant: "outline", size: "sm", className: "mt-2" })}
+          >
+            <RotateCcw className="h-3.5 w-3.5" aria-hidden="true" />
+            重试
+          </button>
+        </StatusNote>
+      ) : isEmpty ? (
+        <p className="mt-2 text-caption leading-6 text-ink-soft">
+          这一章暂无待回收或已逾期的伏笔。
+        </p>
+      ) : (
+        <div className="mt-3">
+          <ChapterForeshadowList groups={groups} />
+        </div>
+      )}
+
+      <Link
+        href={boardHref}
+        className="mt-3 inline-flex items-center gap-1 text-caption text-cinnabar hover:underline focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-cinnabar/35"
+      >
+        去伏笔看板
+        <ArrowUpRight className="h-3.5 w-3.5" aria-hidden="true" />
+      </Link>
+    </section>
+  );
+}
+
 interface EntityRowProps {
   entity: InjectionEntity;
   pinned: boolean;

apps/web/components/workbench/ChapterForeshadowList.tsx

@@ -0,0 +1,104 @@
+import { Flag } from "lucide-react";
+
+import { Badge } from "@/components/ui/Badge";
+import { StatusDot, type StatusTone } from "@/components/ui/StatusDot";
+import {
+  chapterForeshadowTotal,
+  foreshadowStatusLabel,
+  type ChapterForeshadowGroups,
+} from "@/lib/foreshadow/chapterForeshadow";
+import type { ForeshadowView } from "@/lib/api/types";
+import { badgeClass, cn, type BadgeVariant } from "@/lib/ui/variants";
+
+// 「本章伏笔」分组只读清单：写作台右栏 + 速查抽屉共用（DRY）。
+// 三类各成一小块（空块不渲染）；每条给状态点 + 编号 + 标题 + 状态徽标。
+// 无动画，天然尊重 reduced-motion。空态由调用方决定文案。
+
+interface GroupSpec {
+  key: keyof ChapterForeshadowGroups;
+  label: string;
+  tone: StatusTone;
+  // 已逾期用琥珀强调整块外框。
+  emphasize?: boolean;
+  // 可回收在标签前加 ⚑，提示「本章可安排回收」。
+  flag?: boolean;
+}
+
+// 顺序即优先级：可回收（现在能做）→ 已逾期（急）→ 待回收（在后，仅提示）。
+const GROUP_SPECS: readonly GroupSpec[] = [
+  { key: "recyclable", label: "可回收", tone: "success", flag: true },
+  { key: "overdue", label: "已逾期", tone: "warning", emphasize: true },
+  { key: "pending", label: "待回收", tone: "neutral" },
+];
+
+// 单条状态 → 徽标色（OVERDUE 琥珀 / PARTIAL 朱 / OPEN 中性）。
+function statusBadgeVariant(status: string): BadgeVariant {
+  if (status === "OVERDUE") return "warning";
+  if (status === "PARTIAL") return "accent";
+  return "neutral";
+}
+
+interface ChapterForeshadowListProps {
+  groups: ChapterForeshadowGroups;
+}
+
+export function ChapterForeshadowList({ groups }: ChapterForeshadowListProps) {
+  if (chapterForeshadowTotal(groups) === 0) return null;
+  return (
+    <div className="space-y-3">
+      {GROUP_SPECS.map((spec) => (
+        <ForeshadowGroupBlock key={spec.key} spec={spec} items={groups[spec.key]} />
+      ))}
+    </div>
+  );
+}
+
+interface ForeshadowGroupBlockProps {
+  spec: GroupSpec;
+  items: ForeshadowView[];
+}
+
+function ForeshadowGroupBlock({ spec, items }: ForeshadowGroupBlockProps) {
+  if (items.length === 0) return null;
+  return (
+    <div>
+      <p className="flex items-center gap-1.5 text-2xs uppercase tracking-wide text-muted-soft">
+        {spec.flag ? (
+          <Flag className="h-3 w-3 text-pass" aria-hidden="true" />
+        ) : (
+          <StatusDot tone={spec.tone} />
+        )}
+        <span>{spec.label}</span>
+        <span className="tabular-nums text-ink-soft">{items.length}</span>
+      </p>
+      <ul className="mt-1.5 space-y-1">
+        {items.map((item) => (
+          <li
+            key={item.code}
+            className={cn(
+              "rounded border px-2 py-1.5",
+              spec.emphasize
+                ? "border-overdue/35 bg-overdue/10"
+                : "border-line bg-bg",
+            )}
+          >
+            <div className="flex items-center gap-2">
+              <span className="shrink-0 font-mono text-2xs text-ink-soft">
+                {item.code}
+              </span>
+              <span className="truncate text-sm text-ink">{item.title}</span>
+              <span
+                className={badgeClass({
+                  variant: statusBadgeVariant(item.status),
+                  className: "ml-auto shrink-0",
+                })}
+              >
+                {foreshadowStatusLabel(item.status)}
+              </span>
+            </div>
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}

apps/web/components/workbench/ContextDrawer.tsx

@@ -22,12 +22,17 @@ import {
   useContextDrawerData,
   type ContextResource,
 } from "@/lib/workbench/useContextDrawer";
+import { chapterForeshadowTotal } from "@/lib/foreshadow/chapterForeshadow";
+import { useChapterForeshadow } from "@/lib/foreshadow/useChapterForeshadow";
+import { ChapterForeshadowList } from "./ChapterForeshadowList";
 
 // 速查抽屉总开关：一键关闭即回滚（触发按钮据此隐藏，旧侧栏/全宽页路由不受影响）。
 export const CONTEXT_DRAWER_ENABLED = true;
 
 interface ContextDrawerProps {
   projectId: string;
+  // 当前章号：伏笔速查按此分「可回收 / 待回收 / 已逾期」。
+  chapterNo: number;
   open: boolean;
   onClose: () => void;
   // 关闭时把焦点还给触发按钮（a11y）。
@@ -39,6 +44,7 @@ interface ContextDrawerProps {
 // a11y 复用命令面板/Drawer 范式：role=dialog + aria-modal + Esc 关闭 + focus trap + body scroll lock + 还原焦点。
 export function ContextDrawer({
   projectId,
+  chapterNo,
   open,
   onClose,
   triggerRef,
@@ -98,7 +104,12 @@ export function ContextDrawer({
         <TabBar activeTab={activeTab} onSelect={setActiveTab} />
 
         <div className="flex-1 overflow-auto overscroll-contain px-4 py-4">
-          <TabPanel projectId={projectId} activeTab={activeTab} data={data} />
+          <TabPanel
+            projectId={projectId}
+            chapterNo={chapterNo}
+            activeTab={activeTab}
+            data={data}
+          />
         </div>
       </div>
     </div>
@@ -144,12 +155,13 @@ function TabBar({ activeTab, onSelect }: TabBarProps) {
 
 interface TabPanelProps {
   projectId: string;
+  chapterNo: number;
   activeTab: ContextTabKey;
   data: ReturnType<typeof useContextDrawerData>;
 }
 
 // 按当前 Tab 渲染对应速查面板；每个面板都带一个「去完整页编辑 →」链接。
-function TabPanel({ projectId, activeTab, data }: TabPanelProps) {
+function TabPanel({ projectId, chapterNo, activeTab, data }: TabPanelProps) {
   const href = contextTabHref(projectId, activeTab);
   return (
     <div role="tabpanel" className="space-y-3">
@@ -160,7 +172,7 @@ function TabPanel({ projectId, activeTab, data }: TabPanelProps) {
         <OutlinePanel resource={data.outline} onRetry={data.reloadOutline} />
       ) : null}
       {activeTab === "foreshadow" ? (
-        <PlaceholderPanel summary="伏笔账本：埋设/回收窗口与逾期告警在完整看板逐条管理。" />
+        <ForeshadowPanel projectId={projectId} chapterNo={chapterNo} />
       ) : null}
       {activeTab === "rules" ? (
         <PlaceholderPanel summary="世界硬规则：分级约束正文一致性，在规则页增删改。" />
@@ -307,7 +319,32 @@ function OutlinePanel({ resource, onRetry }: OutlinePanelProps) {
   );
 }
 
-// 占位面板（伏笔/规则/文风）：抽屉内一句话摘要，完整编辑走下方跳链。
+interface ForeshadowPanelProps {
+  projectId: string;
+  chapterNo: number;
+}
+
+// 伏笔速查（只读）：按当前章号分「可回收 / 待回收 / 已逾期」，与右栏本章伏笔同数据源、同分类函数。
+function ForeshadowPanel({ projectId, chapterNo }: ForeshadowPanelProps) {
+  const { groups, status, reload } = useChapterForeshadow(projectId, chapterNo);
+  if (status === "loading") return <LoadingNote />;
+  if (status === "error") {
+    return <ErrorNote message="伏笔暂不可用。" onRetry={reload} />;
+  }
+  if (chapterForeshadowTotal(groups) === 0) {
+    return <EmptyNote text="这一章暂无待回收或已逾期的伏笔（按已验收进度）。" />;
+  }
+  return (
+    <div>
+      <p className="mb-2 text-2xs uppercase tracking-wide text-muted-soft">
+        本章伏笔 · 按已验收进度
+      </p>
+      <ChapterForeshadowList groups={groups} />
+    </div>
+  );
+}
+
+// 占位面板（规则/文风）：抽屉内一句话摘要，完整编辑走下方跳链。
 function PlaceholderPanel({ summary }: { summary: string }) {
   return (
     <StatusNote variant="info">

apps/web/components/workbench/Workbench.tsx

@@ -444,6 +444,7 @@ export function Workbench({
       {/* WFW-6 上下文速查：视口无关的右侧 slide-over；旧侧栏/全宽页路由保留、可回滚。 */}
       <ContextDrawer
         projectId={project.id}
+        chapterNo={chapterNo}
         open={contextOpen}
         onClose={() => setContextOpen(false)}
         triggerRef={contextTriggerRef}