diff --git a/backend/app/domains/mirror_tree/service.py b/backend/app/domains/mirror_tree/service.py
index 8907d2f..c85d08a 100644
--- a/backend/app/domains/mirror_tree/service.py
+++ b/backend/app/domains/mirror_tree/service.py
@@ -426,6 +426,15 @@ async def build_generation_prompt(
         if recalled:
             memory_lines = [f"- {m.content}" for m in recalled]
             parts.append(f"【获准记忆（来源可查）】\n" + "\n".join(memory_lines))
+        # 世谱激活（河图）：关键词命中扫描近期文本，常驻条目恒注入；预算内按 insertion_order
+        tree_character_id = await _tree_character_id(question.tree_id)
+        activated = await _activate_lorebook(
+            tree_character_id,
+            scan_text=f"{transcript[-600:]}\n{question.content}",
+            expand=(lambda t: render(t, ctx, registry=registry)),
+        )
+        if activated:
+            parts.append("【世界认知（世谱命中）】\n" + "\n".join(f"- {line}" for line in activated))
     if transcript:
         parts.append(f"【共同经历（祖先路径）】\n{transcript}")
     parts.append(f"【当前问题】\n{expand(question.content)}")
@@ -899,3 +908,56 @@ async def _tree_character_id(tree_id: str) -> str:
     async with AsyncSessionLocal() as session:
         tree = await session.get(MirrorTree, tree_id)
         return tree.character_id if tree else ""
+
+
+async def _activate_lorebook(
+    character_id: str,
+    *,
+    scan_text: str,
+    expand=None,  # noqa: ANN001 — 符文展开函数（char/user 名），无上下文时不展开
+    char_budget: int = 600,
+) -> list[str]:
+    """世谱激活管线（mirror-tree PRD 借 ST 范式）：关键词命中 + 常驻，预算内按插入序。
+
+    扫描范围为近期文本（祖先链尾部 + 当前问题）；条目内容经符文展开后注入。
+    次级键逻辑、递归扫描与时序效果（sticky/cooldown）随 M5 循环轮次状态接入。
+    """
+    from sqlalchemy import select
+
+    from app.models.lorebook import Lorebook, LorebookEntry
+
+    text = "".join(scan_text.lower().split())
+    async with AsyncSessionLocal() as session:
+        books = (
+            await session.execute(
+                select(Lorebook.id).where(
+                    Lorebook.character_id == character_id, Lorebook.status == "active"
+                )
+            )
+        ).scalars().all()
+        if not books:
+            return []
+        entries = (
+            (
+                await session.execute(
+                    select(LorebookEntry)
+                    .where(LorebookEntry.lorebook_id.in_(tuple(books)), LorebookEntry.enabled.is_(True))
+                    .order_by(LorebookEntry.insertion_order)
+                )
+            )
+            .scalars()
+            .all()
+        )
+    picked: list[str] = []
+    used = 0
+    for entry in entries:
+        keys = [k.lower() for k in json.loads(entry.keys_json or "[]") if k]
+        hit = entry.constant or any("".join(k.split()) in text for k in keys)
+        if not hit:
+            continue
+        content = entry.content if expand is None else expand(entry.content)
+        if used + len(content) > char_budget:
+            continue
+        picked.append(content)
+        used += len(content)
+    return picked
diff --git a/backend/tests/test_xirang.py b/backend/tests/test_xirang.py
index 2de656a..66bd314 100644
--- a/backend/tests/test_xirang.py
+++ b/backend/tests/test_xirang.py
@@ -255,3 +255,55 @@ async def test_recalled_memory_injected_into_prompt(client: AsyncClient) -> None
     prompt = requested["payload"]["request"]["messages"][-1]["content"]
     assert "【获准记忆（来源可查）】" in prompt
     _ = json  # 保留 json 引用供调试断言使用
+
+
+# ── M3b：世谱激活进入投影 ──────────────────────────────────────────────
+
+
+async def test_lorebook_activation_injected_into_prompt(client: AsyncClient) -> None:
+    tree_id, _q, answer_id, character_id = await _tree_with_answer(client, "世谱树")
+
+    # 为人物建世谱书 + 关键词条目 + 常驻条目
+    book = (
+        await client.post(
+            "/api/v1/lorebooks",
+            json={"name": "测试世谱", "character_id": character_id},
+        )
+    )
+    if book.status_code >= 400:  # 端点形态兼容：老 CRUD 可能要求别的字段
+        book = (await client.post("/api/v1/lorebooks", json={"name": "测试世谱"}))
+        assert book.status_code < 400, book.text
+    book_id = book.json()["id"]
+
+    keyed = (
+        await client.post(
+            f"/api/v1/lorebooks/{book_id}/entries",
+            json={"keys": ["星穹图书馆"], "content": "星穹图书馆只在午后开放"},
+        )
+    )
+    if keyed.status_code >= 400:  # 兼容批量/单条两种端点形态
+        keyed = await client.post(
+            f"/api/v1/lorebooks/{book_id}/entries",
+            json=[{"keys": ["星穹图书馆"], "content": "星穹图书馆只在午后开放"}],
+        )
+    assert keyed.status_code < 400, keyed.text
+
+    await client.post(f"/api/v1/trees/{tree_id}/adopt", json={"node_id": answer_id})
+    q2 = (
+        await client.post(
+            f"/api/v1/trees/{tree_id}/nodes", json={"content": "带我去星穹图书馆看看"}
+        )
+    ).json()
+    spawned = (await client.post(f"/api/v1/nodes/{q2['id']}/answers", json={})).json()
+    for _ in range(300):
+        if (await client.get(f"/api/v1/runs/{spawned['run_id']}")).json()["status"] in (
+            "completed",
+            "interrupted",
+        ):
+            break
+        await asyncio.sleep(0.02)
+    events = (await client.get(f"/api/v1/runs/{spawned['run_id']}/events")).json()
+    requested = next(e for e in events if e["type"] == "llm.requested")
+    prompt = requested["payload"]["request"]["messages"][-1]["content"]
+    assert "【世界认知（世谱命中）】" in prompt
+    assert "星穹图书馆只在午后开放" in prompt
diff --git a/frontend/src/app/(app)/memories/page.tsx b/frontend/src/app/(app)/memories/page.tsx
new file mode 100644
index 0000000..5f48152
--- /dev/null
+++ b/frontend/src/app/(app)/memories/page.tsx
@@ -0,0 +1,58 @@
+import { PageContainer } from "@/components/layout/PageContainer";
+import { ErrorState } from "@/components/shared/StateViews";
+import { MemoryGovernance } from "@/components/memories/MemoryGovernance";
+import { serverApi } from "@/lib/api/server-client";
+import { describeError } from "@/lib/utils/error";
+import type { Character } from "@/types/api";
+import type { FactualRecordView, XirangMemory } from "@/lib/api/memories";
+
+export const dynamic = "force-dynamic";
+
+export default async function MemoriesPage() {
+  let error: string | null = null;
+  let characterId: string | undefined;
+
+  try {
+    const active = await serverApi
+      .get<Character>("/characters/active")
+      .catch(() => null);
+    characterId = active?.id;
+  } catch (e) {
+    error = describeError(e);
+  }
+
+  if (error || !characterId) {
+    return (
+      <PageContainer
+        title="记忆"
+        description="三级记忆治理：确认、正影与删除。"
+      >
+        <ErrorState
+          message={error ?? "尚未激活人物——启镜后这里会生长出记忆。"}
+        />
+      </PageContainer>
+    );
+  }
+
+  const [memories, records] = await Promise.all([
+    serverApi
+      .get<XirangMemory[]>(`/characters/${characterId}/memories`)
+      .catch(() => []),
+    serverApi
+      .get<FactualRecordView[]>(`/characters/${characterId}/factual-records`)
+      .catch(() => []),
+  ]);
+
+  return (
+    <PageContainer
+      title="记忆"
+      description="候选箱审阅 · 重忆确认 · 正影与删除 · 实录溯源。删除权高于召回便利。"
+    >
+      <MemoryGovernance
+        characterId={characterId}
+        initialMemories={memories}
+        initialRecords={records}
+      />
+    </PageContainer>
+  );
+}
diff --git a/frontend/src/components/layout/Sidebar.tsx b/frontend/src/components/layout/Sidebar.tsx
index 458f74b..646b1eb 100644
--- a/frontend/src/components/layout/Sidebar.tsx
+++ b/frontend/src/components/layout/Sidebar.tsx
@@ -7,6 +7,7 @@ import { LogoButton } from "@/components/easter-egg/LogoButton";
 import {
   AdminIcon,
   ArchiveIcon,
+  MemoryIcon,
   ChatIcon,
   CharacterIcon,
   CosmosIcon,
@@ -84,7 +85,10 @@ const NAV_GROUPS: NavGroup[] = [
   },
   {
     title: "藏识",
-    items: [{ href: "/archive", label: "归档", icon: <ArchiveIcon /> }],
+    items: [
+      { href: "/memory", label: "记忆", icon: <MemoryIcon /> },
+      { href: "/archive", label: "归档", icon: <ArchiveIcon /> },
+    ],
   },
   {
     title: "百工",
diff --git a/frontend/src/components/memories/MemoryGovernance.tsx b/frontend/src/components/memories/MemoryGovernance.tsx
new file mode 100644
index 0000000..38eba32
--- /dev/null
+++ b/frontend/src/components/memories/MemoryGovernance.tsx
@@ -0,0 +1,293 @@
+"use client";
+
+/**
+ * 记忆治理：候选箱审阅、重忆确认、正影、删除、来源展开、实录查看。
+ * 治理红线：删除权与来源可见性高于召回便利；墓碑与高敏不展示原文。
+ */
+
+import { useCallback, useState } from "react";
+
+import { Button } from "@/components/ui/Button";
+import { Modal } from "@/components/ui/Modal";
+import * as memoriesApi from "@/lib/api/memories";
+import { cn } from "@/lib/utils/cn";
+import type { FactualRecordView, XirangMemory } from "@/lib/api/memories";
+
+interface MemoryGovernanceProps {
+  characterId: string;
+  initialMemories: XirangMemory[];
+  initialRecords: FactualRecordView[];
+}
+
+const TIER_LABEL: Record<string, string> = {
+  trace: "微痕",
+  explicit: "明忆",
+  sensitive: "重忆",
+};
+const TYPE_LABEL: Record<string, string> = {
+  persona: "画像",
+  episodic: "事件",
+  instruction: "指令",
+  relationship_view: "心痕",
+  fact_candidate: "手记",
+};
+const STATUS_LABEL: Record<string, string> = {
+  candidate: "候选箱",
+  pending: "待确认",
+  active: "已生效",
+  superseded: "已正影",
+  tombstoned: "已删除",
+};
+
+type Tab = "pending" | "candidate" | "active" | "archive" | "records";
+
+export function MemoryGovernance({
+  characterId,
+  initialMemories,
+  initialRecords,
+}: MemoryGovernanceProps) {
+  const [tab, setTab] = useState<Tab>("pending");
+  const [items, setItems] = useState(initialMemories);
+  const [records] = useState(initialRecords);
+  const [busy, setBusy] = useState(false);
+  const [correctTarget, setCorrectTarget] = useState<XirangMemory | null>(null);
+  const [correctValue, setCorrectValue] = useState("");
+
+  const reload = useCallback(async () => {
+    setItems(await memoriesApi.listMemories(characterId));
+  }, [characterId]);
+
+  const run = async (action: () => Promise<unknown>) => {
+    setBusy(true);
+    try {
+      await action();
+      await reload();
+    } finally {
+      setBusy(false);
+    }
+  };
+
+  const byTab = (status: XirangMemory["status"]) =>
+    items.filter((m) => m.status === status);
+  const visible: XirangMemory[] =
+    tab === "pending"
+      ? byTab("pending")
+      : tab === "candidate"
+        ? byTab("candidate")
+        : tab === "active"
+          ? byTab("active")
+          : tab === "archive"
+            ? items.filter(
+                (m) => m.status === "superseded" || m.status === "tombstoned",
+              )
+            : [];
+
+  const tabs: { key: Tab; label: string; count: number }[] = [
+    { key: "pending", label: "待确认", count: byTab("pending").length },
+    { key: "candidate", label: "候选箱", count: byTab("candidate").length },
+    { key: "active", label: "已生效", count: byTab("active").length },
+    {
+      key: "archive",
+      label: "归档",
+      count: items.filter(
+        (m) => m.status === "superseded" || m.status === "tombstoned",
+      ).length,
+    },
+    { key: "records", label: "实录", count: records.length },
+  ];
+
+  return (
+    <div className="space-y-4">
+      <div
+        role="tablist"
+        aria-label="记忆分区"
+        className="flex flex-wrap gap-2"
+      >
+        {tabs.map((t) => (
+          <button
+            key={t.key}
+            type="button"
+            role="tab"
+            aria-selected={tab === t.key}
+            onClick={() => setTab(t.key)}
+            className={cn(
+              "rounded-full border px-3 py-1 text-sm transition-colors",
+              tab === t.key
+                ? "border-patina bg-patina/15 text-patina"
+                : "border-rule text-muted hover:bg-overlay-hover",
+            )}
+          >
+            {t.label}
+            <span className="ml-1.5 text-xs opacity-70">{t.count}</span>
+          </button>
+        ))}
+      </div>
+
+      {tab === "records" ? (
+        <ul className="space-y-2">
+          {records.length === 0 && (
+            <li className="rounded-xl border border-dashed border-rule p-5 text-center text-sm text-muted">
+              尚无实录——镜树归真后自动生成。
+            </li>
+          )}
+          {records.map((r) => (
+            <li
+              key={r.id}
+              className="rounded-xl border border-rule bg-surface p-4"
+            >
+              <p className="text-sm">{r.summary}</p>
+              <p className="mt-1 text-xs text-muted">
+                {new Date(r.occurred_at).toLocaleString("zh-CN")} · 证据{" "}
+                {r.evidence.path_nodes?.length ?? 0} 节点
+              </p>
+            </li>
+          ))}
+        </ul>
+      ) : (
+        <ul className="space-y-2">
+          {visible.length === 0 && (
+            <li className="rounded-xl border border-dashed border-rule p-5 text-center text-sm text-muted">
+              此分区暂无记忆。
+            </li>
+          )}
+          {visible.map((m) => (
+            <li
+              key={m.id}
+              className="rounded-xl border border-rule bg-surface p-4"
+            >
+              <div className="flex flex-wrap items-center gap-2 text-xs">
+                <span
+                  className={cn(
+                    "rounded px-1.5 py-0.5",
+                    m.tier === "sensitive" &&
+                      "bg-amber-500/15 text-amber-600 dark:text-amber-400",
+                    m.tier !== "sensitive" && "bg-muted text-muted",
+                  )}
+                >
+                  {TIER_LABEL[m.tier] ?? m.tier}
+                </span>
+                <span className="rounded bg-muted px-1.5 py-0.5 text-muted">
+                  {TYPE_LABEL[m.type] ?? m.type}
+                </span>
+                <span className="rounded bg-muted px-1.5 py-0.5 text-muted">
+                  {STATUS_LABEL[m.status] ?? m.status}
+                </span>
+                {m.recall_count > 0 && (
+                  <span className="text-muted">召回 {m.recall_count} 次</span>
+                )}
+                <span className="ml-auto text-muted">
+                  {new Date(m.created_at).toLocaleString("zh-CN")}
+                </span>
+              </div>
+              <p className="mt-2 text-sm leading-relaxed">
+                {m.content || "（原文已随删除移除）"}
+              </p>
+              {m.source_refs.length > 0 && (
+                <p className="mt-1 text-xs text-muted">
+                  来源：{m.source_refs.join(" · ")}
+                </p>
+              )}
+              {(m.status === "pending" ||
+                m.status === "candidate" ||
+                m.status === "active") && (
+                <div className="mt-3 flex flex-wrap gap-2">
+                  {(m.status === "pending" || m.status === "candidate") && (
+                    <Button
+                      variant="primary"
+                      size="sm"
+                      disabled={busy}
+                      onClick={() =>
+                        void run(() => memoriesApi.confirmMemory(m.id))
+                      }
+                    >
+                      确认生效
+                    </Button>
+                  )}
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    disabled={busy}
+                    onClick={() => {
+                      setCorrectTarget(m);
+                      setCorrectValue(m.content);
+                    }}
+                  >
+                    正影
+                  </Button>
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    disabled={busy}
+                    onClick={() => void run(() => memoriesApi.denyMemory(m.id))}
+                  >
+                    拒绝
+                  </Button>
+                  <Button
+                    variant="danger"
+                    size="sm"
+                    disabled={busy}
+                    onClick={() => {
+                      if (
+                        window.confirm("删除后全链路停用且不可恢复原文，确认？")
+                      ) {
+                        void run(() => memoriesApi.deleteMemory(m.id));
+                      }
+                    }}
+                  >
+                    删除
+                  </Button>
+                </div>
+              )}
+            </li>
+          ))}
+        </ul>
+      )}
+
+      <Modal
+        open={Boolean(correctTarget)}
+        onClose={() => setCorrectTarget(null)}
+        title="正影（形成新版本）"
+        size="md"
+      >
+        <div className="space-y-3 text-sm">
+          <p className="text-muted">
+            正影不改写历史：新版本成为召回当前版，旧版保留来源与纠错轨迹、停止普通召回。
+          </p>
+          <textarea
+            value={correctValue}
+            onChange={(e) => setCorrectValue(e.target.value)}
+            rows={5}
+            className="w-full resize-none rounded-lg border border-rule bg-transparent p-2 text-sm outline-none focus:border-patina"
+          />
+          <div className="flex justify-end gap-2">
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => setCorrectTarget(null)}
+            >
+              取消
+            </Button>
+            <Button
+              variant="primary"
+              size="sm"
+              disabled={busy || !correctValue.trim() || !correctTarget}
+              onClick={() => {
+                if (correctTarget) {
+                  void run(async () => {
+                    await memoriesApi.correctMemory(
+                      correctTarget.id,
+                      correctValue.trim(),
+                    );
+                    setCorrectTarget(null);
+                  });
+                }
+              }}
+            >
+              创建新版本
+            </Button>
+          </div>
+        </div>
+      </Modal>
+    </div>
+  );
+}
diff --git a/frontend/src/lib/api/index.ts b/frontend/src/lib/api/index.ts
index 290fa35..70476b9 100644
--- a/frontend/src/lib/api/index.ts
+++ b/frontend/src/lib/api/index.ts
@@ -20,6 +20,7 @@ export * as settingsApi from "./settings";
 export * as importsApi from "./imports";
 export * as extractionApi from "./extraction";
 export * as worldApi from "./world";
+export * as memoriesApi from "./memories";
 export * as lorebooksApi from "./lorebooks";
 export * as skillsApi from "./skills";
 export * as mcpApi from "./mcp";
diff --git a/frontend/src/lib/api/memories.test.ts b/frontend/src/lib/api/memories.test.ts
new file mode 100644
index 0000000..0b6a4c3
--- /dev/null
+++ b/frontend/src/lib/api/memories.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it, vi } from "vitest";
+
+vi.mock("./client", () => ({
+  apiGet: vi.fn(),
+  apiPost: vi.fn(),
+  apiDelete: vi.fn(),
+}));
+
+import { apiGet, apiPost } from "./client";
+import { confirmMemory, correctMemory, listMemories } from "./memories";
+
+describe("memories api", () => {
+  it("listMemories GET /characters/:id/memories 带筛选", async () => {
+    vi.mocked(apiGet).mockResolvedValue([]);
+    await listMemories("character_1", { status: "pending" });
+    expect(apiGet).toHaveBeenCalledWith("/characters/character_1/memories", {
+      status: "pending",
+    });
+  });
+
+  it("confirmMemory POST /memories/:id/confirm", async () => {
+    vi.mocked(apiPost).mockResolvedValue({ id: "memory_1", status: "active" });
+    await confirmMemory("memory_1");
+    expect(apiPost).toHaveBeenCalledWith("/memories/memory_1/confirm");
+  });
+
+  it("correctMemory POST /memories/:id/correct", async () => {
+    vi.mocked(apiPost).mockResolvedValue({ id: "memory_2" });
+    await correctMemory("memory_1", "新版本");
+    expect(apiPost).toHaveBeenCalledWith("/memories/memory_1/correct", {
+      new_content: "新版本",
+    });
+  });
+});
diff --git a/frontend/src/lib/api/memories.ts b/frontend/src/lib/api/memories.ts
new file mode 100644
index 0000000..21fe263
--- /dev/null
+++ b/frontend/src/lib/api/memories.ts
@@ -0,0 +1,64 @@
+/** 息壤记忆 API Client（api-contracts §3.5）。 */
+
+import { apiDelete, apiGet, apiPost } from "./client";
+
+export interface XirangMemory {
+  id: string;
+  character_id: string;
+  tier: "trace" | "explicit" | "sensitive";
+  type: string;
+  status: "candidate" | "pending" | "active" | "superseded" | "tombstoned";
+  source: string;
+  content: string;
+  source_refs: string[];
+  sensitivity: string;
+  priority: number;
+  confidence: number;
+  vitality: number;
+  realm: string;
+  prev_version_id: string | null;
+  recall_count: number;
+  last_recalled_at: string | null;
+  created_at: string;
+}
+
+export interface FactualRecordView {
+  id: string;
+  canonization_id: string;
+  summary: string;
+  evidence: { path_nodes?: string[] };
+  occurred_at: string;
+}
+
+export function listMemories(
+  characterId: string,
+  filters?: { tier?: string; status?: string; type?: string },
+) {
+  return apiGet<XirangMemory[]>(`/characters/${characterId}/memories`, filters);
+}
+
+export function confirmMemory(memoryId: string) {
+  return apiPost<XirangMemory>(`/memories/${memoryId}/confirm`);
+}
+
+export function denyMemory(memoryId: string) {
+  return apiPost<{ memory_id: string; exited_retrieval: boolean }>(
+    `/memories/${memoryId}/deny`,
+  );
+}
+
+export function correctMemory(memoryId: string, newContent: string) {
+  return apiPost<XirangMemory>(`/memories/${memoryId}/correct`, {
+    new_content: newContent,
+  });
+}
+
+export function deleteMemory(memoryId: string) {
+  return apiDelete<void>(`/memories/${memoryId}`);
+}
+
+export function listFactualRecords(characterId: string) {
+  return apiGet<FactualRecordView[]>(
+    `/characters/${characterId}/factual-records`,
+  );
+}