diff --git a/app/api/documents.py b/app/api/documents.py
index e645065..8407168 100644
--- a/app/api/documents.py
+++ b/app/api/documents.py
@@ -315,6 +315,60 @@ async def list_library_documents(
     )
 
 
+# ─── Section 2: 카테고리 집계 (Sidebar / Dashboard) ───
+#
+# documents.category (§1 에서 추가) 가 1차 진입점. 이 엔드포인트는 Sidebar 배지 및
+# /dashboard 카테고리 카드 용. ai_suggestion.proposed_category='library' 인
+# 승인 대기 건수는 /library 의 pending 배지로 별도 표시.
+
+
+@router.get("/stats/category-counts")
+async def get_category_counts(
+    user: Annotated[User, Depends(get_current_user)],
+    session: Annotated[AsyncSession, Depends(get_session)],
+):
+    """카테고리별 문서 건수 + 승인 대기 (library 제안) 건수.
+
+    Response:
+        {
+          "counts": { "document": 640, "library": 12, "news": 311, ... },
+          "library_pending_suggestions": 17
+        }
+
+    - 전제: §1 의 documents.category enum + ai_suggestion JSONB 가 이미 적용됨
+    - category IS NULL 인 문서는 counts 에서 제외 (§1 백필 전 드문 상태)
+    """
+    from sqlalchemy import text as sql_text
+
+    count_rows = await session.execute(
+        sql_text("""
+            SELECT category::text AS category, COUNT(*) AS cnt
+            FROM documents
+            WHERE deleted_at IS NULL
+              AND category IS NOT NULL
+            GROUP BY category
+        """)
+    )
+    counts: dict[str, int] = {row.category: row.cnt for row in count_rows}
+
+    pending_scalar = (
+        await session.execute(
+            sql_text("""
+                SELECT COUNT(*)
+                FROM documents
+                WHERE deleted_at IS NULL
+                  AND ai_suggestion IS NOT NULL
+                  AND ai_suggestion->>'proposed_category' = 'library'
+            """)
+        )
+    ).scalar()
+
+    return {
+        "counts": counts,
+        "library_pending_suggestions": int(pending_scalar or 0),
+    }
+
+
 @router.get("/", response_model=DocumentListResponse)
 async def list_documents(
     user: Annotated[User, Depends(get_current_user)],
diff --git a/frontend/src/lib/components/Sidebar.svelte b/frontend/src/lib/components/Sidebar.svelte
index 0742713..e37ea69 100644
--- a/frontend/src/lib/components/Sidebar.svelte
+++ b/frontend/src/lib/components/Sidebar.svelte
@@ -1,14 +1,40 @@
 <script>
+  // Sidebar — §2 재구성.
+  //
+  // 구조:
+  //   1) 카테고리 내비 (Section 2 — documents.category 1차 진입점)
+  //      · 문서 / 자료실 / 뉴스 / 메모 / (Audio §3) / (Video §3) / 검색
+  //      · count 배지: GET /api/documents/stats/category-counts
+  //      · 자료실에는 pending suggestion 배지 별도 표시
+  //   2) 도메인 트리 (기존 Phase 2 기능 — /documents 페이지 필터링)
+  //   3) 스마트 그룹 + Inbox (기존)
+  //
+  // 제약: audio/video 는 §3 에서 채우므로 여기서는 주석 자리로 둔다.
   import { page } from '$app/stores';
   import { goto } from '$app/navigation';
   import { api } from '$lib/api';
-  import { ChevronRight, ChevronDown, FolderOpen, FolderTree, Inbox, Clock, Mail, Scale, StickyNote } from 'lucide-svelte';
+  import {
+    ChevronRight,
+    ChevronDown,
+    FolderOpen,
+    FolderTree,
+    Inbox,
+    Clock,
+    Mail,
+    Scale,
+    StickyNote,
+    Newspaper,
+    Search,
+  } from 'lucide-svelte';
+
+  // ─── 도메인 트리 (기존) ───
 
   let tree = $state([]);
-  let loading = $state(true);
+  let treeLoading = $state(true);
   let expanded = $state({});
 
   let activeDomain = $derived($page.url.searchParams.get('domain'));
+  let currentPath = $derived($page.url.pathname);
 
   const DOMAIN_COLORS = {
     'Philosophy': 'var(--domain-philosophy)',
@@ -21,13 +47,34 @@
   };
 
   async function loadTree() {
-    loading = true;
+    treeLoading = true;
     try {
       tree = await api('/documents/tree');
     } catch (err) {
       console.error('트리 로딩 실패:', err);
     } finally {
-      loading = false;
+      treeLoading = false;
+    }
+  }
+
+  // ─── 카테고리 count (§2 신규) ───
+
+  let categoryCounts = $state({});
+  let libraryPending = $state(0);
+  let countsLoading = $state(true);
+
+  async function loadCategoryCounts() {
+    countsLoading = true;
+    try {
+      const res = await api('/documents/stats/category-counts');
+      categoryCounts = res?.counts ?? {};
+      libraryPending = res?.library_pending_suggestions ?? 0;
+    } catch {
+      // §1 미적용 환경에서는 엔드포인트가 없을 수 있다 — 배지만 숨기고 내비는 유지.
+      categoryCounts = {};
+      libraryPending = 0;
+    } finally {
+      countsLoading = false;
     }
   }
 
@@ -35,7 +82,7 @@
     expanded[path] = !expanded[path];
   }
 
-  function navigate(path) {
+  function navigateDomain(path) {
     const params = new URLSearchParams($page.url.searchParams);
     params.delete('page');
     if (path) {
@@ -52,10 +99,10 @@
   }
 
   $effect(() => { loadTree(); });
+  $effect(() => { loadCategoryCounts(); });
 
   $effect(() => {
     if (activeDomain) {
-      // 선택된 경로의 부모들 자동 펼치기
       const parts = activeDomain.split('/');
       let path = '';
       for (const part of parts) {
@@ -65,9 +112,10 @@
     }
   });
 
-  let totalCount = $derived(tree.reduce((sum, n) => sum + n.count, 0));
+  // 도메인 트리 전체 count (stats 엔드포인트가 죽어있을 때 문서 배지 fallback 으로도 사용)
+  let treeTotal = $derived(tree.reduce((sum, n) => sum + n.count, 0));
+  let documentCount = $derived(categoryCounts.document ?? treeTotal);
 
-  // ArrowUp/Down 키보드 nav — 현재 펼쳐진 tree-row만 traverse
   function handleTreeKeydown(e) {
     if (e.key !== 'ArrowDown' && e.key !== 'ArrowUp') return;
     const root = e.currentTarget;
@@ -88,31 +136,117 @@
 
 <aside class="h-full flex flex-col bg-sidebar border-r border-default overflow-y-auto">
   <div class="px-4 py-3 border-b border-default">
-    <h2 class="text-sm font-semibold text-dim uppercase tracking-wider">분류</h2>
+    <h2 class="text-sm font-semibold text-dim uppercase tracking-wider">카테고리</h2>
   </div>
 
-  <!-- 전체 문서 -->
-  <div class="px-2 pt-2">
-    <button
-      onclick={() => navigate(null)}
-      class="w-full flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
-        {!activeDomain ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface'}"
+  <!-- 카테고리 내비 (§2) -->
+  <nav class="px-2 py-2 flex flex-col gap-0.5">
+    <a
+      href="/documents"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath === '/documents' ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface-hover'}"
     >
       <span class="flex items-center gap-2">
         <FolderOpen size={16} />
-        전체 문서
+        문서
       </span>
-      {#if totalCount > 0}
-        <span class="text-xs text-dim">{totalCount}</span>
+      {#if documentCount > 0}
+        <span class="text-xs text-dim">{documentCount}</span>
+      {/if}
+    </a>
+
+    <a
+      href="/library"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath.startsWith('/library') ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface-hover'}"
+    >
+      <span class="flex items-center gap-2">
+        <FolderTree size={16} />
+        자료실
+      </span>
+      <span class="flex items-center gap-1.5">
+        {#if libraryPending > 0}
+          <span
+            class="text-[10px] font-medium bg-warning/15 text-warning border border-warning/30 rounded px-1.5 py-0.5"
+            title="승인 대기 제안"
+          >
+            제안 {libraryPending}
+          </span>
+        {/if}
+        {#if categoryCounts.library > 0}
+          <span class="text-xs text-dim">{categoryCounts.library}</span>
+        {/if}
+      </span>
+    </a>
+
+    <a
+      href="/news"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath.startsWith('/news') ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface-hover'}"
+    >
+      <span class="flex items-center gap-2">
+        <Newspaper size={16} />
+        뉴스
+      </span>
+      {#if categoryCounts.news > 0}
+        <span class="text-xs text-dim">{categoryCounts.news}</span>
+      {/if}
+    </a>
+
+    <a
+      href="/memos"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath.startsWith('/memos') ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface-hover'}"
+    >
+      <span class="flex items-center gap-2">
+        <StickyNote size={16} />
+        메모
+      </span>
+      {#if categoryCounts.memo > 0}
+        <span class="text-xs text-dim">{categoryCounts.memo}</span>
+      {/if}
+    </a>
+
+    <!--
+      §3 에서 채울 자리 — audio/video 네비:
+      <a href="/audio">Audio · {categoryCounts.audio}</a>
+      <a href="/video">Video · {categoryCounts.video}</a>
+    -->
+
+    <a
+      href="/ask"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath.startsWith('/ask') ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface-hover'}"
+    >
+      <span class="flex items-center gap-2">
+        <Search size={16} />
+        검색 · 질문
+      </span>
+    </a>
+  </nav>
+
+  <!-- 도메인 트리 (기존 /documents 필터 용) -->
+  <div class="px-4 pt-3 pb-1 border-t border-default">
+    <h3 class="text-[10px] font-semibold text-dim uppercase tracking-wider">도메인</h3>
+  </div>
+  <nav
+    class="px-2 py-1 flex-shrink-0 max-h-[40vh] overflow-y-auto"
+    onkeydown={handleTreeKeydown}
+  >
+    <button
+      onclick={() => navigateDomain(null)}
+      class="w-full flex items-center justify-between px-3 py-1.5 rounded-md text-sm transition-colors
+        {!activeDomain && currentPath === '/documents' ? 'bg-accent/15 text-accent' : 'text-dim hover:bg-surface hover:text-text'}"
+    >
+      <span>전체 도메인</span>
+      {#if treeTotal > 0}
+        <span class="text-xs">{treeTotal}</span>
       {/if}
     </button>
-  </div>
 
-  <!-- 트리 -->
-  <nav class="flex-1 px-2 py-2" onkeydown={handleTreeKeydown}>
-    {#if loading}
-      {#each Array(5) as _}
-        <div class="h-8 bg-surface rounded-md animate-pulse mx-1 mb-1"></div>
+    {#if treeLoading}
+      {#each Array(3) as _}
+        <div class="h-7 bg-surface rounded-md animate-pulse mx-1 mb-1"></div>
       {/each}
     {:else}
       {#each tree as node}
@@ -140,10 +274,10 @@
             {/if}
 
             <button
-              onclick={() => navigate(n.path)}
+              onclick={() => navigateDomain(n.path)}
               data-tree-row
               aria-current={isActive ? 'page' : undefined}
-              class="flex-1 flex items-center justify-between px-2 py-1.5 rounded-md text-sm transition-colors
+              class="flex-1 flex items-center justify-between px-2 py-1 rounded-md text-sm transition-colors
                 {isActive ? 'bg-accent/15 text-accent' : isParent ? 'text-text' : 'text-dim hover:bg-surface hover:text-text'}"
             >
               <span class="flex items-center gap-2">
@@ -188,30 +322,14 @@
     >
       <Mail size={14} /> 이메일
     </button>
-    <a
-      href="/library"
-      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm transition-colors
-        {$page.url.pathname === '/library' ? 'bg-accent/15 text-accent' : 'text-dim hover:bg-surface hover:text-text'}"
-    >
-      <FolderTree size={14} /> 자료실
-    </a>
   </div>
 
-  <!-- 메모 & Inbox -->
+  <!-- Inbox -->
   <div class="px-2 py-2 border-t border-default">
-    <a
-      href="/memos"
-      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
-        {$page.url.pathname === '/memos' ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface'}"
-    >
-      <span class="flex items-center gap-2">
-        <StickyNote size={16} />
-        메모
-      </span>
-    </a>
     <a
       href="/inbox"
-      class="flex items-center justify-between px-3 py-2 rounded-md text-sm text-text hover:bg-surface transition-colors"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
+        {currentPath.startsWith('/inbox') ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface'}"
     >
       <span class="flex items-center gap-2">
         <Inbox size={16} />
diff --git a/frontend/src/lib/components/SuggestionReview.svelte b/frontend/src/lib/components/SuggestionReview.svelte
new file mode 100644
index 0000000..5c299af
--- /dev/null
+++ b/frontend/src/lib/components/SuggestionReview.svelte
@@ -0,0 +1,323 @@
+<script lang="ts">
+  // 자동 분류 제안 승인 UI (Section 2)
+  //
+  // 역할: documents.ai_suggestion 에 축적된 제안을 카드 리스트로 노출하고
+  //       사용자가 승인/반려 할 수 있게 한다. 자료실 /library 페이지 상단에 렌더.
+  //
+  // API 계약 (§1 이 제공):
+  //   GET    /api/documents?has_suggestion=true&proposed_category=<cat>
+  //   POST   /api/documents/{id}/accept-suggestion  body: { expected_source_updated_at }
+  //   DELETE /api/documents/{id}/suggestion
+  //
+  // 409 Conflict: 다른 탭에서 문서가 수정되었거나 제안 payload 가 새 classify 결과로
+  // 덮인 경우. 토스트 + 해당 카드 refresh (성공적인 카드는 사라짐).
+  import { onMount } from 'svelte';
+  import { api } from '$lib/api';
+  import { addToast } from '$lib/stores/toast';
+  import { Check, X, Loader2, RefreshCcw, FileText } from 'lucide-svelte';
+  import Button from '$lib/components/ui/Button.svelte';
+
+  interface Suggestion {
+    proposed_category: string;
+    proposed_path: string | null;
+    proposed_doctype: string | null;
+    confidence: number | null;
+    source_updated_at: string;
+    reason: string | null;
+  }
+
+  interface SuggestionDoc {
+    id: number;
+    title: string | null;
+    category: string | null;
+    file_format?: string | null;
+    ai_suggestion: Suggestion;
+    updated_at: string;
+  }
+
+  interface Props {
+    // 대기 카테고리 (현재는 'library' 만 사용)
+    proposedCategory?: string;
+    // 부모가 승인/반려 후 갱신하고 싶을 때 호출되는 콜백 (카운트 배지 갱신 용)
+    onChange?: () => void;
+  }
+
+  let { proposedCategory = 'library', onChange }: Props = $props();
+
+  let docs = $state<SuggestionDoc[]>([]);
+  let total = $state(0);
+  let loading = $state(true);
+  let bulkRunning = $state(false);
+  // 행 단위 작업 상태 (id → 'accept' | 'reject')
+  let rowBusy = $state<Record<number, 'accept' | 'reject' | null>>({});
+  let selected = $state<Set<number>>(new Set());
+
+  async function load() {
+    loading = true;
+    try {
+      const params = new URLSearchParams({
+        has_suggestion: 'true',
+        proposed_category: proposedCategory,
+        page: '1',
+        page_size: '50',
+      });
+      const res = await api<{ items: SuggestionDoc[]; total: number }>(
+        `/documents?${params}`,
+      );
+      docs = res.items ?? [];
+      total = res.total ?? docs.length;
+      selected = new Set();
+    } catch (err) {
+      // 엔드포인트 미도착(=§1 미머지) 상태에서도 /library 페이지 자체는 살아 있어야 하므로
+      // 실패는 조용히 빈 상태로 전환한다.
+      docs = [];
+      total = 0;
+      // 404/422 외 에러는 사용자에게 알린다.
+      const status = (err as { status?: number }).status;
+      if (status && status !== 404 && status !== 422) {
+        addToast('error', '제안 목록 로딩 실패');
+      }
+    } finally {
+      loading = false;
+    }
+  }
+
+  async function accept(doc: SuggestionDoc) {
+    rowBusy[doc.id] = 'accept';
+    try {
+      await api(`/documents/${doc.id}/accept-suggestion`, {
+        method: 'POST',
+        body: JSON.stringify({
+          expected_source_updated_at: doc.ai_suggestion.source_updated_at,
+        }),
+      });
+      addToast('success', `${doc.title ?? '제목 없음'} → 자료실 이동`);
+      // 해당 카드 제거 (서버가 200 + ai_suggestion=NULL)
+      docs = docs.filter((d) => d.id !== doc.id);
+      total = Math.max(0, total - 1);
+      selected.delete(doc.id);
+      selected = new Set(selected);
+      onChange?.();
+    } catch (err) {
+      const status = (err as { status?: number }).status;
+      if (status === 409) {
+        addToast(
+          'warning',
+          '문서가 다른 곳에서 수정돼 제안이 만료되었습니다. 목록을 새로고침합니다.',
+        );
+        await load();
+      } else {
+        addToast('error', '승인 실패');
+      }
+    } finally {
+      rowBusy[doc.id] = null;
+    }
+  }
+
+  async function reject(doc: SuggestionDoc) {
+    rowBusy[doc.id] = 'reject';
+    try {
+      await api(`/documents/${doc.id}/suggestion`, { method: 'DELETE' });
+      addToast('info', '제안 반려');
+      docs = docs.filter((d) => d.id !== doc.id);
+      total = Math.max(0, total - 1);
+      selected.delete(doc.id);
+      selected = new Set(selected);
+      onChange?.();
+    } catch (err) {
+      addToast('error', '반려 실패');
+    } finally {
+      rowBusy[doc.id] = null;
+    }
+  }
+
+  async function acceptSelected() {
+    if (selected.size === 0 || bulkRunning) return;
+    bulkRunning = true;
+    const targets = docs.filter((d) => selected.has(d.id));
+    let ok = 0;
+    let staleOrFail = 0;
+    for (const doc of targets) {
+      try {
+        await api(`/documents/${doc.id}/accept-suggestion`, {
+          method: 'POST',
+          body: JSON.stringify({
+            expected_source_updated_at: doc.ai_suggestion.source_updated_at,
+          }),
+        });
+        ok += 1;
+      } catch {
+        staleOrFail += 1;
+      }
+    }
+    bulkRunning = false;
+    if (ok > 0) {
+      addToast('success', `${ok}건 자료실로 이동`);
+    }
+    if (staleOrFail > 0) {
+      addToast('warning', `${staleOrFail}건은 실패/만료 — 목록 새로고침`);
+    }
+    onChange?.();
+    await load();
+  }
+
+  function toggleSelect(id: number) {
+    const next = new Set(selected);
+    if (next.has(id)) next.delete(id);
+    else next.add(id);
+    selected = next;
+  }
+
+  function toggleAll() {
+    if (selected.size === docs.length) {
+      selected = new Set();
+    } else {
+      selected = new Set(docs.map((d) => d.id));
+    }
+  }
+
+  function formatConfidence(c: number | null | undefined): string {
+    if (c === null || c === undefined) return '—';
+    return `${Math.round(c * 100)}%`;
+  }
+
+  function proposedPathLabel(doc: SuggestionDoc): string {
+    const s = doc.ai_suggestion;
+    if (s.proposed_path) return s.proposed_path;
+    if (s.proposed_doctype) return `@${s.proposed_category}/${s.proposed_doctype}`;
+    return `@${s.proposed_category}`;
+  }
+
+  onMount(() => {
+    load();
+  });
+</script>
+
+<section
+  class="border border-default rounded-lg bg-surface-muted/30 overflow-hidden"
+  aria-label="자동 분류 제안 승인"
+>
+  <header class="flex items-center justify-between gap-3 px-4 py-3 border-b border-default bg-surface">
+    <div class="flex items-center gap-2">
+      <FileText size={16} class="text-dim" />
+      <h2 class="text-sm font-semibold text-text">자동 분류 제안</h2>
+      {#if !loading}
+        <span
+          class="text-xs text-dim bg-surface-muted px-1.5 py-0.5 rounded"
+          data-testid="suggestion-total"
+        >
+          {total}건
+        </span>
+      {/if}
+    </div>
+    <div class="flex items-center gap-2">
+      {#if docs.length > 1}
+        <button
+          type="button"
+          onclick={toggleAll}
+          class="text-xs text-dim hover:text-text"
+        >
+          {selected.size === docs.length ? '전체 해제' : '전체 선택'}
+        </button>
+      {/if}
+      {#if selected.size > 0}
+        <Button
+          size="sm"
+          variant="primary"
+          loading={bulkRunning}
+          onclick={acceptSelected}
+          icon={Check}
+        >
+          선택 {selected.size}건 승인
+        </Button>
+      {/if}
+      <button
+        type="button"
+        class="p-1.5 text-dim hover:text-text rounded hover:bg-surface-hover"
+        onclick={load}
+        aria-label="새로고침"
+        disabled={loading}
+      >
+        <RefreshCcw size={14} class={loading ? 'animate-spin' : ''} />
+      </button>
+    </div>
+  </header>
+
+  {#if loading}
+    <div class="px-4 py-6 flex items-center gap-2 text-dim text-sm">
+      <Loader2 size={14} class="animate-spin" />
+      제안 불러오는 중…
+    </div>
+  {:else if docs.length === 0}
+    <div class="px-4 py-5 text-sm text-dim">
+      대기 중인 제안이 없습니다. 발주서·세금계산서 등이 분류되면 여기 쌓입니다.
+    </div>
+  {:else}
+    <ul class="divide-y divide-default/40">
+      {#each docs as doc (doc.id)}
+        {@const busy = rowBusy[doc.id]}
+        {@const isSel = selected.has(doc.id)}
+        <li class="flex items-start gap-3 px-4 py-3 hover:bg-surface/60">
+          <label class="mt-0.5 flex items-center cursor-pointer">
+            <input
+              type="checkbox"
+              checked={isSel}
+              onchange={() => toggleSelect(doc.id)}
+              class="h-4 w-4 rounded border-default"
+              aria-label="선택"
+            />
+          </label>
+          <a
+            href={`/documents/${doc.id}`}
+            class="flex-1 min-w-0 space-y-1"
+          >
+            <div class="flex items-baseline gap-2">
+              <span class="text-sm font-medium text-text truncate">
+                {doc.title ?? `문서 ${doc.id}`}
+              </span>
+              {#if doc.category}
+                <span class="text-[10px] uppercase tracking-wide text-dim">
+                  현재: {doc.category}
+                </span>
+              {/if}
+            </div>
+            <div class="flex items-center gap-2 text-xs text-dim">
+              <span class="font-mono text-accent">{proposedPathLabel(doc)}</span>
+              {#if doc.ai_suggestion.proposed_doctype}
+                <span class="px-1.5 py-0.5 rounded bg-surface-muted">
+                  {doc.ai_suggestion.proposed_doctype}
+                </span>
+              {/if}
+              <span>신뢰도 {formatConfidence(doc.ai_suggestion.confidence)}</span>
+              {#if doc.ai_suggestion.reason}
+                <span class="truncate">· {doc.ai_suggestion.reason}</span>
+              {/if}
+            </div>
+          </a>
+          <div class="flex items-center gap-1.5 shrink-0">
+            <Button
+              size="sm"
+              variant="secondary"
+              icon={X}
+              loading={busy === 'reject'}
+              disabled={busy === 'accept'}
+              onclick={() => reject(doc)}
+            >
+              반려
+            </Button>
+            <Button
+              size="sm"
+              variant="primary"
+              icon={Check}
+              loading={busy === 'accept'}
+              disabled={busy === 'reject'}
+              onclick={() => accept(doc)}
+            >
+              승인
+            </Button>
+          </div>
+        </li>
+      {/each}
+    </ul>
+  {/if}
+</section>
diff --git a/frontend/src/routes/library/+page.svelte b/frontend/src/routes/library/+page.svelte
index 15d6781..c79afa2 100644
--- a/frontend/src/routes/library/+page.svelte
+++ b/frontend/src/routes/library/+page.svelte
@@ -27,6 +27,15 @@
   import Modal from '$lib/components/ui/Modal.svelte';
   import ConfirmDialog from '$lib/components/ui/ConfirmDialog.svelte';
   import Skeleton from '$lib/components/ui/Skeleton.svelte';
+  import SuggestionReview from '$lib/components/SuggestionReview.svelte';
+
+  // §2: /library 는 "자료실 + 승인 대기함" 2역할을 겸한다.
+  // 승인/반려 후 자료실 목록·트리·facet count 를 재조회.
+  function handleSuggestionChange() {
+    loadTree();
+    loadDocs();
+    loadFacetCounts();
+  }
 
   // ─── 상태 ───
 
@@ -445,6 +454,14 @@
     {/if}
   </div>
 
+  <!-- 승인 대기함 (§2) — ai_suggestion.proposed_category='library' 문서 -->
+  <div class="max-w-7xl mx-auto mb-4">
+    <SuggestionReview
+      proposedCategory="library"
+      onChange={handleSuggestionChange}
+    />
+  </div>
+
   <div class="max-w-7xl mx-auto grid grid-cols-1 lg:grid-cols-12 gap-6">
     <!-- 왼쪽: 트리 (5/12) -->
     <aside class="lg:col-span-5 xl:col-span-4">