diff --git a/src/api/endpoints/storage.ts b/src/api/endpoints/storage.ts
index 4b1da32..81990b6 100644
--- a/src/api/endpoints/storage.ts
+++ b/src/api/endpoints/storage.ts
@@ -1,10 +1,32 @@
 import { api } from '../index';
-import { toStorageStats, type RawStorageStats } from '../mappers';
-import type { StorageStats } from '../types';
+import {
+  toStorageStats,
+  toPage,
+  toTrack,
+  type RawStorageStats,
+  type RawPaged,
+  type RawTrack,
+} from '../mappers';
+import type {
+  StorageStats,
+  DuplicateGroup,
+  PaginatedResponse,
+  Track,
+} from '../types';
 
 // `GET /storage` returns library + disk statistics (§A6). The maintenance
-// routes (`/storage/duplicates`, `/storage/broken`, `/storage/missing-metadata`,
-// `POST /storage/cleanup`) are still backend stubs and unused by the UI.
+// routes back the Storage Maintenance screen: `/duplicates`, `/broken`,
+// `/missing-metadata` (read) and `POST /cleanup` (admin, enqueues the worker).
+
+interface RawDuplicateGroup {
+  fingerprint: string;
+  tracks: RawTrack[];
+}
+
+interface Paging {
+  limit?: number;
+  offset?: number;
+}
 
 export const storageApi = api.injectEndpoints({
   endpoints: (build) => ({
@@ -13,16 +35,32 @@ export const storageApi = api.injectEndpoints({
       transformResponse: (raw: RawStorageStats) => toStorageStats(raw),
       providesTags: ['Storage'],
     }),
-    scanStorage: build.mutation<{ jobId: string }, void>({
-      query: () => ({ url: '/storage/scan', method: 'POST' }),
-      invalidatesTags: ['Storage', 'Track', 'Album', 'Artist'],
+    getDuplicates: build.query<DuplicateGroup[], void>({
+      query: () => '/storage/duplicates',
+      transformResponse: (raw: RawDuplicateGroup[]) =>
+        raw.map((g) => ({
+          fingerprint: g.fingerprint,
+          tracks: g.tracks.map(toTrack),
+        })),
+      providesTags: ['Storage', 'Track'],
     }),
-    deleteTrackFile: build.mutation<void, string>({
-      query: (trackId) => ({
-        url: `/storage/tracks/${trackId}`,
-        method: 'DELETE',
+    getBrokenFiles: build.query<PaginatedResponse<Track>, Paging | void>({
+      query: (p) => ({ url: '/storage/broken', params: p ?? {} }),
+      transformResponse: (raw: RawPaged<RawTrack>) => toPage(raw, toTrack),
+      providesTags: ['Storage', 'Track'],
+    }),
+    getMissingMetadata: build.query<PaginatedResponse<Track>, Paging | void>({
+      query: (p) => ({ url: '/storage/missing-metadata', params: p ?? {} }),
+      transformResponse: (raw: RawPaged<RawTrack>) => toPage(raw, toTrack),
+      providesTags: ['Storage', 'Track'],
+    }),
+    runCleanup: build.mutation<{ status: string; jobId: string }, void>({
+      query: () => ({ url: '/storage/cleanup', method: 'POST' }),
+      transformResponse: (raw: { status: string; job_id: string }) => ({
+        status: raw.status,
+        jobId: raw.job_id,
       }),
-      invalidatesTags: ['Storage', { type: 'Track', id: undefined }],
+      invalidatesTags: ['Storage', 'Track'],
     }),
   }),
   overrideExisting: false,
@@ -30,6 +68,8 @@ export const storageApi = api.injectEndpoints({
 
 export const {
   useGetStorageStatsQuery,
-  useScanStorageMutation,
-  useDeleteTrackFileMutation,
+  useGetDuplicatesQuery,
+  useGetBrokenFilesQuery,
+  useGetMissingMetadataQuery,
+  useRunCleanupMutation,
 } = storageApi;
diff --git a/src/api/types.ts b/src/api/types.ts
index 975bbce..7434aa4 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -176,6 +176,12 @@ export interface StorageStats {
   disk?: StorageDiskUsage;
 }
 
+/** A set of tracks sharing one acoustic fingerprint — de-dup candidates (§A6). */
+export interface DuplicateGroup {
+  fingerprint: string;
+  tracks: Track[];
+}
+
 export interface User {
   id: string;
   username: string;
diff --git a/src/features/storage/StorageMaintenancePage.tsx b/src/features/storage/StorageMaintenancePage.tsx
index a926d1d..c487e1e 100644
--- a/src/features/storage/StorageMaintenancePage.tsx
+++ b/src/features/storage/StorageMaintenancePage.tsx
@@ -1,8 +1,232 @@
+import { useState } from 'react';
+import { useNavigate } from 'react-router';
 import { useTranslation } from 'react-i18next';
-import { Placeholder } from '../../components/common/Placeholder';
+import { Window, Card, Button, SegmentedControl, Callout } from '@olly/modern-sk';
+import { TrackRow } from '../../components/track/TrackRow';
+import { LoadingSkeleton } from '../../components/common/LoadingSkeleton';
+import { EmptyState } from '../../components/common/EmptyState';
+import { ErrorState } from '../../components/common/ErrorState';
+import { usePermissions } from '../../hooks/usePermissions';
+import { useIsOffline } from '../../hooks/useConnectionStatus';
+import {
+  useGetDuplicatesQuery,
+  useGetBrokenFilesQuery,
+  useGetMissingMetadataQuery,
+  useRunCleanupMutation,
+} from '../../api/endpoints/storage';
 
-/** `/storage/maintenance` — A6 maintenance (dupes, broken files, cleanup). Scaffold only. */
+const PAGE_SIZE = 50;
+type Tab = 'duplicates' | 'broken' | 'missing';
+
+/** `/storage/maintenance` — A6 maintenance: duplicates, broken files, missing
+ * metadata, and orphan cleanup. */
 export function StorageMaintenancePage() {
   const { t } = useTranslation();
-  return <Placeholder title={t('pages.storageMaintenance')} />;
+  const offline = useIsOffline();
+  const [tab, setTab] = useState<Tab>('duplicates');
+
+  return (
+    <div style={{ padding: '1.5rem', maxWidth: 1100, margin: '0 auto' }}>
+      <Window title={t('pages.storageMaintenance')}>
+        <p style={{ color: 'var(--color-text-2)', marginTop: 0 }}>
+          {t('storage.maintenance.subtitle')}
+        </p>
+
+        {offline && (
+          <Callout variant="info">{t('common.offlineBanner')}</Callout>
+        )}
+
+        <CleanupSection />
+
+        <div style={{ margin: '1.25rem 0' }}>
+          <SegmentedControl
+            value={tab}
+            onValueChange={(v) => setTab(v as Tab)}
+            items={[
+              { value: 'duplicates', label: t('storage.maintenance.tabs.duplicates') },
+              { value: 'broken', label: t('storage.maintenance.tabs.broken') },
+              { value: 'missing', label: t('storage.maintenance.tabs.missing') },
+            ]}
+          />
+        </div>
+
+        {/* Only the active tab is mounted, so only its query fires. */}
+        {tab === 'duplicates' && <DuplicatesTab />}
+        {tab === 'broken' && (
+          <TrackListTab useQuery={useGetBrokenFilesQuery} emptyKey="broken" />
+        )}
+        {tab === 'missing' && (
+          <TrackListTab useQuery={useGetMissingMetadataQuery} emptyKey="missing" />
+        )}
+      </Window>
+    </div>
+  );
+}
+
+/** Orphan-file cleanup — admin only (enqueues a worker job). */
+function CleanupSection() {
+  const { t } = useTranslation();
+  const { isAdmin } = usePermissions();
+  const [runCleanup, { isLoading }] = useRunCleanupMutation();
+  const [done, setDone] = useState(false);
+
+  if (!isAdmin) return null;
+
+  const handle = async () => {
+    setDone(false);
+    await runCleanup().unwrap();
+    setDone(true);
+  };
+
+  return (
+    <Card
+      style={{
+        padding: '1rem 1.25rem',
+        display: 'flex',
+        alignItems: 'center',
+        gap: '1rem',
+      }}
+    >
+      <div style={{ flex: 1 }}>
+        <div style={{ fontWeight: 600 }}>
+          {t('storage.maintenance.cleanup.title')}
+        </div>
+        <div style={{ fontSize: '0.8125rem', color: 'var(--color-text-3)' }}>
+          {t('storage.maintenance.cleanup.description')}
+        </div>
+      </div>
+      {done && (
+        <span style={{ fontSize: '0.8125rem', color: 'var(--color-accent)' }}>
+          {t('storage.maintenance.cleanup.enqueued')}
+        </span>
+      )}
+      <Button variant="ember" disabled={isLoading} onClick={() => void handle()}>
+        {t('storage.maintenance.cleanup.button')}
+      </Button>
+    </Card>
+  );
+}
+
+/** Duplicate groups (tracks sharing an acoustic fingerprint). */
+function DuplicatesTab() {
+  const { t } = useTranslation();
+  const navigate = useNavigate();
+  const { data, isLoading, isError, refetch } = useGetDuplicatesQuery();
+
+  if (isLoading) return <LoadingSkeleton rows={5} height={56} />;
+  if (isError) return <ErrorState onRetry={refetch} />;
+  if (!data || data.length === 0) {
+    return (
+      <EmptyState icon="✓" title={t('storage.maintenance.duplicates.empty')} />
+    );
+  }
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: '1rem' }}>
+      {data.map((group) => (
+        <Card key={group.fingerprint} style={{ padding: '0.75rem 1rem' }}>
+          <div
+            style={{
+              fontSize: '0.8125rem',
+              color: 'var(--color-text-3)',
+              marginBottom: '0.5rem',
+            }}
+          >
+            {t('storage.maintenance.duplicates.groupTitle', {
+              count: group.tracks.length,
+            })}
+          </div>
+          {group.tracks.map((track) => (
+            <TrackRow
+              key={track.id}
+              track={track}
+              showAlbum
+              onEditMetadata={(tr) => void navigate(`/tracks/${tr.id}/metadata`)}
+            />
+          ))}
+        </Card>
+      ))}
+    </div>
+  );
+}
+
+/** A paginated track list backed by a maintenance query (broken / missing). */
+function TrackListTab({
+  useQuery,
+  emptyKey,
+}: {
+  useQuery:
+    | typeof useGetBrokenFilesQuery
+    | typeof useGetMissingMetadataQuery;
+  emptyKey: 'broken' | 'missing';
+}) {
+  const { t } = useTranslation();
+  const navigate = useNavigate();
+  const [offset, setOffset] = useState(0);
+  const { data, isLoading, isError, refetch } = useQuery({
+    limit: PAGE_SIZE,
+    offset,
+  });
+
+  if (isLoading) return <LoadingSkeleton rows={6} height={56} />;
+  if (isError) return <ErrorState onRetry={refetch} />;
+  if (!data || data.items.length === 0) {
+    return (
+      <EmptyState
+        icon="✓"
+        title={t(`storage.maintenance.${emptyKey}.empty`)}
+      />
+    );
+  }
+
+  const from = offset + 1;
+  const to = offset + data.items.length;
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: '0.25rem' }}>
+      {data.items.map((track) => (
+        <TrackRow
+          key={track.id}
+          track={track}
+          showAlbum
+          onEditMetadata={(tr) => void navigate(`/tracks/${tr.id}/metadata`)}
+        />
+      ))}
+      {(offset > 0 || data.hasMore) && (
+        <div
+          style={{
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'flex-end',
+            gap: '0.75rem',
+            marginTop: '0.75rem',
+          }}
+        >
+          <span style={{ fontSize: '0.8125rem', color: 'var(--color-text-3)' }}>
+            {t('storage.maintenance.pagination', {
+              from,
+              to,
+              total: data.total,
+            })}
+          </span>
+          <Button
+            variant="ghost"
+            size="sm"
+            disabled={offset === 0}
+            onClick={() => setOffset(Math.max(0, offset - PAGE_SIZE))}
+          >
+            {t('storage.maintenance.prev')}
+          </Button>
+          <Button
+            variant="ghost"
+            size="sm"
+            disabled={!data.hasMore}
+            onClick={() => setOffset(offset + PAGE_SIZE)}
+          >
+            {t('storage.maintenance.next')}
+          </Button>
+        </div>
+      )}
+    </div>
+  );
 }
diff --git a/src/i18n/locales/en.ts b/src/i18n/locales/en.ts
index c268b21..ffaaf0f 100644
--- a/src/i18n/locales/en.ts
+++ b/src/i18n/locales/en.ts
@@ -286,6 +286,35 @@ const en = {
   },
   storage: {
     subtitle: 'Everything this instance has tucked away',
+    maintenance: {
+      subtitle:
+        'Find duplicates, tracks that failed enrichment, and files still awaiting metadata — then reconcile orphaned rows.',
+      tabs: {
+        duplicates: 'Duplicates',
+        broken: 'Failed',
+        missing: 'No metadata',
+      },
+      cleanup: {
+        title: 'Clean up orphaned files',
+        description:
+          'Scan the catalogue and remove rows whose backing file has vanished. Runs in the background.',
+        button: 'Run cleanup',
+        enqueued: 'Cleanup queued',
+      },
+      duplicates: {
+        empty: 'No duplicates found.',
+        groupTitle: '{{count}} tracks share a fingerprint',
+      },
+      broken: {
+        empty: 'No failed tracks.',
+      },
+      missing: {
+        empty: 'Every track has metadata.',
+      },
+      pagination: '{{from}}–{{to}} of {{total}}',
+      prev: 'Previous',
+      next: 'Next',
+    },
     device: 'On this device',
     server: 'On the server',
     audioCache: 'Cached audio',
diff --git a/src/i18n/locales/ru.ts b/src/i18n/locales/ru.ts
index 5cb34bc..9aef23a 100644
--- a/src/i18n/locales/ru.ts
+++ b/src/i18n/locales/ru.ts
@@ -287,6 +287,35 @@ const ru: Translations = {
   },
   storage: {
     subtitle: 'Всё, что хранит этот инстанс',
+    maintenance: {
+      subtitle:
+        'Найдите дубликаты, треки с ошибкой обогащения и файлы без метаданных — и уберите осиротевшие записи.',
+      tabs: {
+        duplicates: 'Дубликаты',
+        broken: 'С ошибкой',
+        missing: 'Без метаданных',
+      },
+      cleanup: {
+        title: 'Очистить осиротевшие файлы',
+        description:
+          'Сверить каталог и удалить записи, у которых пропал файл на диске. Выполняется в фоне.',
+        button: 'Запустить очистку',
+        enqueued: 'Очистка поставлена в очередь',
+      },
+      duplicates: {
+        empty: 'Дубликатов не найдено.',
+        groupTitle: '{{count}} треков с одним отпечатком',
+      },
+      broken: {
+        empty: 'Треков с ошибкой нет.',
+      },
+      missing: {
+        empty: 'У всех треков есть метаданные.',
+      },
+      pagination: '{{from}}–{{to}} из {{total}}',
+      prev: 'Назад',
+      next: 'Вперёд',
+    },
     device: 'На этом устройстве',
     server: 'На сервере',
     audioCache: 'Кэш аудио',