diff --git a/web/src/App.test.tsx b/web/src/App.test.tsx
index 53395d23d..9c74732f1 100644
--- a/web/src/App.test.tsx
+++ b/web/src/App.test.tsx
@@ -1011,6 +1011,450 @@ describe('ChicoryTV SPA scaffold', () => {
     expect(window.fetch).toHaveBeenCalledWith('/api/channels/state', expect.any(Object));
   });
 
+  it('renders the Libraries screen from live media source and scan status APIs', async () => {
+    mockDashboardApi({
+      libraryScanStatuses: [{ libraryId: 31, percent: 0.625 }],
+      mediaSources: [
+        mediaSource({
+          connectionAddress: null,
+          id: 30,
+          kind: 'Local',
+          libraries: [
+            library({ id: 31, itemCount: 1250, lastScan: '2026-07-05T14:30:00Z', mediaKind: 'Movies', name: 'Movies' }),
+            library({ id: 32, itemCount: 14, lastScan: null, mediaKind: 'OtherVideos', name: 'Station IDs' })
+          ],
+          name: 'Local'
+        }),
+        mediaSource({
+          connectionAddress: 'https://plex.example.test',
+          id: 40,
+          kind: 'Plex',
+          libraries: [
+            library({ id: 41, itemCount: 80, lastScan: '2026-07-04T08:00:00Z', mediaKind: 'Shows', name: 'TV Shows' })
+          ],
+          name: 'Plex Server'
+        }),
+        mediaSource({
+          connectionAddress: 'https://jellyfin.example.test',
+          id: 50,
+          kind: 'Jellyfin',
+          libraries: [],
+          name: 'Jellyfin Home'
+        }),
+        mediaSource({
+          connectionAddress: 'https://emby.example.test',
+          id: 60,
+          kind: 'Emby',
+          libraries: [
+            library({ id: 61, itemCount: 22, lastScan: '2026-07-01T00:00:00Z', mediaKind: 'MusicVideos', name: 'Music Videos' })
+          ],
+          name: 'Emby Archive'
+        })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+
+    expect(await screen.findByRole('heading', { name: 'Media Libraries' })).toBeInTheDocument();
+    expect(screen.getByText('4 sources')).toBeInTheDocument();
+    expect(screen.getByText('1,366 items')).toBeInTheDocument();
+    expect(screen.getByRole('region', { name: 'Local media source' })).toBeInTheDocument();
+    expect(screen.getByText('Local connection')).toBeInTheDocument();
+    expect(screen.getByRole('region', { name: 'Plex Server media source' })).toBeInTheDocument();
+    expect(screen.getByText('https://plex.example.test')).toBeInTheDocument();
+    expect(screen.getAllByText('Movies').length).toBeGreaterThan(0);
+    expect(screen.getByText('Station IDs')).toBeInTheDocument();
+    expect(screen.getByText('TV Shows')).toBeInTheDocument();
+    expect(screen.getAllByText('Music Videos').length).toBeGreaterThan(0);
+    expect(screen.getByText('Other Videos')).toBeInTheDocument();
+    expect(screen.getAllByText('Music Videos').length).toBeGreaterThan(0);
+    // "Scanning" now appears twice: once as the source-header status label (paired with
+    // the StatusDot, not color alone) and once as the per-library scanning Badge.
+    expect(screen.getAllByText('Scanning').length).toBeGreaterThan(0);
+    // Wire contract: percent is a 0-1 fraction (0.625) - the UI must render it as 63%, not 0.625%.
+    expect(screen.getByText('63%')).toBeInTheDocument();
+    expect(screen.getAllByText('Synced').length).toBeGreaterThan(0);
+    expect(screen.getAllByText('Never scanned').length).toBeGreaterThan(0);
+    expect(screen.getByRole('button', { name: 'Add Source' })).toBeDisabled();
+    expect(screen.getByText('Adding sources is deferred to the existing server setup screens.')).toBeInTheDocument();
+    expect(window.fetch).toHaveBeenCalledWith('/api/media-sources', expect.any(Object));
+    expect(window.fetch).toHaveBeenCalledWith('/api/libraries/scan-status', expect.any(Object));
+  });
+
+  it('converts 0 and 1 fractional scan-status percents to 0% and 100%', async () => {
+    mockDashboardApi({
+      libraryScanStatuses: [
+        { libraryId: 31, percent: 0 },
+        { libraryId: 32, percent: 1 }
+      ],
+      mediaSources: [
+        mediaSource({
+          libraries: [
+            library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' }),
+            library({ id: 32, itemCount: 5, mediaKind: 'Shows', name: 'TV Shows' })
+          ]
+        })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+
+    expect(await screen.findByText('0%')).toBeInTheDocument();
+    expect(screen.getByText('100%')).toBeInTheDocument();
+  });
+
+  it('fetches Libraries data as a route delta and does not poll sources', async () => {
+    const intervalHandlers: Array<() => void> = [];
+    vi.spyOn(window, 'setInterval').mockImplementation((handler: TimerHandler, timeout?: number) => {
+      if (typeof handler === 'function' && (timeout ?? 0) >= 10000) {
+        intervalHandlers.push(handler as () => void);
+      }
+      return intervalHandlers.length;
+    });
+    vi.spyOn(window, 'clearInterval').mockImplementation(() => undefined);
+    mockDashboardApi({
+      libraryScanStatuses: [{ libraryId: 31, percent: 0.1 }],
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    await waitFor(() => {
+      expect(fetchCount('/api/media-sources')).toBeGreaterThan(0);
+    });
+    const sourceFetchesBeforeNavigation = fetchCount('/api/media-sources');
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect(await screen.findByRole('heading', { name: 'Media Libraries' })).toBeInTheDocument();
+
+    expect(fetchCount('/api/media-sources')).toBe(sourceFetchesBeforeNavigation + 1);
+    expect(fetchCount('/api/libraries/scan-status')).toBe(1);
+
+    const sourceFetchesBeforePoll = fetchCount('/api/media-sources');
+    intervalHandlers.forEach((handler) => handler());
+
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBeGreaterThan(1);
+    });
+    expect(fetchCount('/api/media-sources')).toBe(sourceFetchesBeforePoll);
+  });
+
+  it('stops Libraries scan polling and refreshes sources once when scans complete', async () => {
+    const intervalHandlers: Array<() => void> = [];
+    let clearCount = 0;
+    vi.spyOn(window, 'setInterval').mockImplementation((handler: TimerHandler) => {
+      if (typeof handler === 'function') {
+        intervalHandlers.push(handler as () => void);
+      }
+
+      return intervalHandlers.length;
+    });
+    vi.spyOn(window, 'clearInterval').mockImplementation(() => {
+      clearCount += 1;
+    });
+    mockDashboardApi({
+      libraryScanStatusSequence: [
+        [{ libraryId: 31, percent: 0.75 }],
+        []
+      ],
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect(await screen.findByText('75%')).toBeInTheDocument();
+
+    const sourceFetchesBeforeCompletion = fetchCount('/api/media-sources');
+    intervalHandlers.forEach((handler) => handler());
+
+    await waitFor(() => {
+      expect(screen.queryByText('75%')).not.toBeInTheDocument();
+    });
+    expect(fetchCount('/api/media-sources')).toBe(sourceFetchesBeforeCompletion + 1);
+    expect(clearCount).toBeGreaterThan(0);
+  });
+
+  it('triggers a library scan, disables that library while in flight, and starts polling scan status', async () => {
+    const scanStatusesAfterMutation = [{ libraryId: 31, percent: 0.05 }];
+    mockDashboardApi({
+      libraryScanStatuses: [],
+      libraryScanStatusesAfterMutation: scanStatusesAfterMutation,
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect((await screen.findAllByText('Movies')).length).toBeGreaterThan(0);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan Movies' }));
+
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/31/scan', expect.objectContaining({ method: 'POST' }));
+    });
+    expect(await screen.findByText('5%')).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+  });
+
+  it('keeps the scan button disabled and polling armed through the queue-to-start race, then clears once the scan finishes', async () => {
+    const intervalHandlers: Array<() => void> = [];
+    let clearCount = 0;
+    vi.spyOn(window, 'setInterval').mockImplementation((handler: TimerHandler, timeout?: number) => {
+      if (typeof handler === 'function' && (timeout ?? 0) >= 10000) {
+        intervalHandlers.push(handler as () => void);
+      }
+      return intervalHandlers.length;
+    });
+    vi.spyOn(window, 'clearInterval').mockImplementation(() => {
+      clearCount += 1;
+    });
+
+    mockDashboardApi({
+      libraryScanStatusSequence: [
+        [], // initial screen load
+        [], // trigger's immediate post-POST fetch: scanner hasn't started yet
+        [{ libraryId: 31, percent: 0.3 }], // first poll tick: now active
+        [] // second poll tick: scan finished
+      ],
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect((await screen.findAllByText('Movies')).length).toBeGreaterThan(0);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan Movies' }));
+
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/31/scan', expect.objectContaining({ method: 'POST' }));
+    });
+
+    // The immediate post-trigger status fetch returned [] - without pending-id tracking
+    // the button would re-enable here and polling would never start. Both must hold.
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBe(2);
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+    expect(intervalHandlers.length).toBeGreaterThan(0);
+
+    const sourceFetchesBeforeCompletion = fetchCount('/api/media-sources');
+
+    intervalHandlers.forEach((handler) => handler());
+    expect(await screen.findByText('30%')).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+
+    intervalHandlers.forEach((handler) => handler());
+    await waitFor(() => {
+      expect(screen.queryByText('30%')).not.toBeInTheDocument();
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).not.toBeDisabled();
+    expect(fetchCount('/api/media-sources')).toBe(sourceFetchesBeforeCompletion + 1);
+    expect(clearCount).toBeGreaterThan(0);
+  });
+
+  it('re-enables the scan button and stops polling when a queued scan never appears (grace window expiry)', async () => {
+    const intervalHandlers: Array<() => void> = [];
+    let clearCount = 0;
+    vi.spyOn(window, 'setInterval').mockImplementation((handler: TimerHandler, timeout?: number) => {
+      if (typeof handler === 'function' && (timeout ?? 0) >= 10000) {
+        intervalHandlers.push(handler as () => void);
+      }
+      return intervalHandlers.length;
+    });
+    vi.spyOn(window, 'clearInterval').mockImplementation(() => {
+      clearCount += 1;
+    });
+
+    mockDashboardApi({
+      libraryScanStatuses: [],
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect((await screen.findAllByText('Movies')).length).toBeGreaterThan(0);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan Movies' }));
+
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/31/scan', expect.objectContaining({ method: 'POST' }));
+    });
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBe(2);
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+    expect(intervalHandlers.length).toBeGreaterThan(0);
+
+    // The id never shows up in scan-status. It survives a couple of ticks...
+    intervalHandlers.forEach((handler) => handler());
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBe(3);
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+
+    // ...but expires once the grace window runs out, freeing the button and the poll.
+    intervalHandlers.forEach((handler) => handler());
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: 'Scan Movies' })).not.toBeDisabled();
+    });
+    expect(clearCount).toBeGreaterThan(0);
+  });
+
+  it('re-enables the scan button and stops polling when scan-status errors repeatedly after a trigger (grace window on error)', async () => {
+    const intervalHandlers: Array<() => void> = [];
+    let clearCount = 0;
+    vi.spyOn(window, 'setInterval').mockImplementation((handler: TimerHandler, timeout?: number) => {
+      if (typeof handler === 'function' && (timeout ?? 0) >= 10000) {
+        intervalHandlers.push(handler as () => void);
+      }
+      return intervalHandlers.length;
+    });
+    vi.spyOn(window, 'clearInterval').mockImplementation(() => {
+      clearCount += 1;
+    });
+
+    mockDashboardApi({
+      libraryScanStatuses: [],
+      libraryScanStatusFailAfterTrigger: true,
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect((await screen.findAllByText('Movies')).length).toBeGreaterThan(0);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan Movies' }));
+
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/31/scan', expect.objectContaining({ method: 'POST' }));
+    });
+
+    // The immediate post-trigger status fetch errors (first grace-tick burn), but the
+    // button must stay disabled and the poll must stay armed - a transient failure must
+    // not be indistinguishable from "give up immediately".
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBe(2);
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+    expect(intervalHandlers.length).toBeGreaterThan(0);
+
+    // scan-status keeps erroring on every poll tick...
+    intervalHandlers.forEach((handler) => handler());
+    await waitFor(() => {
+      expect(fetchCount('/api/libraries/scan-status')).toBe(3);
+    });
+    expect(screen.getByRole('button', { name: 'Scan Movies' })).toBeDisabled();
+
+    // ...but the same grace budget burns down on failures too, so persistent failure
+    // eventually frees the button and stops the interval instead of polling forever.
+    intervalHandlers.forEach((handler) => handler());
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: 'Scan Movies' })).not.toBeDisabled();
+    });
+    expect(clearCount).toBeGreaterThan(0);
+  });
+
+  it('shows Libraries API errors and retries', async () => {
+    // The backend has no exception middleware, so a real failure is a bare 500 with no
+    // ProblemDetails body - do not invent one here (mirrors the scan-trigger-404 test below).
+    mockDashboardApi({
+      mediaSourcesFailuresBeforeSuccess: 2,
+      mediaSources: [mediaSource({ libraries: [] })]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+
+    expect(await screen.findByText('Request failed with status 500')).toBeInTheDocument();
+    fireEvent.click(screen.getByRole('button', { name: 'Retry' }));
+
+    expect(await screen.findByRole('heading', { name: 'Media Libraries' })).toBeInTheDocument();
+  });
+
+  it('shows scan trigger failures without inventing application ProblemDetails', async () => {
+    mockDashboardApi({
+      mediaSources: [
+        mediaSource({ libraries: [library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' })] })
+      ],
+      mutationFailures: {
+        '/api/libraries/31/scan': {
+          status: 404
+        }
+      }
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect((await screen.findAllByText('Movies')).length).toBeGreaterThan(0);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan Movies' }));
+
+    expect(await screen.findByText('Request failed with status 404')).toBeInTheDocument();
+  });
+
+  it('scans every library in a source when its Scan-all button is clicked', async () => {
+    mockDashboardApi({
+      mediaSources: [
+        mediaSource({
+          id: 30,
+          libraries: [
+            library({ id: 31, itemCount: 10, mediaKind: 'Movies', name: 'Movies' }),
+            library({ id: 32, itemCount: 5, mediaKind: 'Shows', name: 'TV Shows' })
+          ],
+          name: 'Local'
+        })
+      ]
+    });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+    expect(await screen.findByText('TV Shows')).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('button', { name: 'Scan all libraries in Local' }));
+
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/31/scan', expect.objectContaining({ method: 'POST' }));
+    });
+    await waitFor(() => {
+      expect(window.fetch).toHaveBeenCalledWith('/api/libraries/32/scan', expect.objectContaining({ method: 'POST' }));
+    });
+    expect(fetchCount('/api/libraries/31/scan')).toBe(1);
+    expect(fetchCount('/api/libraries/32/scan')).toBe(1);
+  });
+
+  it('shows an empty Libraries state when no media sources exist', async () => {
+    mockDashboardApi({ mediaSources: [] });
+
+    render(<App />);
+
+    fireEvent.click(screen.getByRole('link', { name: 'Libraries' }));
+
+    expect(await screen.findByText('No media sources returned')).toBeInTheDocument();
+  });
+
   it('toggles Show filler to refetch playout items with showFiller=true and badge filler rows', async () => {
     mockDashboardApi({
       playoutItems: [
@@ -1444,6 +1888,28 @@ function collection(overrides: Record<string, unknown> = {}): Record<string, unk
   };
 }
 
+function library(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    id: 31,
+    itemCount: 0,
+    lastScan: null,
+    mediaKind: 'Movies',
+    name: 'Movies',
+    ...overrides
+  };
+}
+
+function mediaSource(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    connectionAddress: null,
+    id: 30,
+    kind: 'Local',
+    libraries: [],
+    name: 'Local',
+    ...overrides
+  };
+}
+
 // PlayoutListItemResponseModel: rail rows have no detail-only fields (playoutMode/scheduleFile).
 function listPlayout(overrides: Record<string, unknown> = {}): Record<string, unknown> {
   return {
@@ -1593,7 +2059,13 @@ function mockDashboardApi({
   confirm = false,
   fillerPresets = [],
   health = [],
+  libraryScanStatusFailAfterTrigger = false,
+  libraryScanStatuses = [],
+  libraryScanStatusesAfterMutation = null,
+  libraryScanStatusSequence = null,
   mediaSources = [],
+  mediaSourcesFailure = null,
+  mediaSourcesFailuresBeforeSuccess = 0,
   multiCollections = [],
   mutationFailures = {},
   playoutDetails = null,
@@ -1622,7 +2094,13 @@ function mockDashboardApi({
   confirm?: boolean;
   fillerPresets?: unknown[];
   health?: unknown[];
+  libraryScanStatusFailAfterTrigger?: boolean;
+  libraryScanStatuses?: unknown[];
+  libraryScanStatusesAfterMutation?: unknown[] | null;
+  libraryScanStatusSequence?: unknown[][] | null;
   mediaSources?: unknown[];
+  mediaSourcesFailure?: unknown;
+  mediaSourcesFailuresBeforeSuccess?: number;
   multiCollections?: unknown[];
   mutationFailures?: Record<string, unknown>;
   playoutDetails?: unknown;
@@ -1646,9 +2124,13 @@ function mockDashboardApi({
 } = {}) {
   vi.spyOn(window, 'confirm').mockReturnValue(confirm);
   vi.spyOn(window, 'prompt').mockReturnValue(prompt);
+  let currentLibraryScanStatuses = libraryScanStatuses;
   let currentScheduleItems = scheduleItems;
+  let remainingMediaSourcesFailures = mediaSourcesFailuresBeforeSuccess;
   let remainingScheduleItemFailures = scheduleItemFailuresBeforeSuccess;
   let remainingPlayoutItemsFailures = playoutItemsFailuresBeforeSuccess;
+  let scanStatusSequenceIndex = 0;
+  let scanStatusShouldFail = false;
 
   vi.spyOn(window, 'fetch').mockImplementation((input: RequestInfo | URL, init?: RequestInit) => {
     const path = input.toString();
@@ -1723,9 +2205,53 @@ function mockDashboardApi({
     }
 
     if (path === '/api/media-sources') {
+      if (remainingMediaSourcesFailures > 0) {
+        remainingMediaSourcesFailures -= 1;
+
+        return Promise.resolve(
+          mediaSourcesFailure ? jsonResponse(mediaSourcesFailure, 500) : new Response(null, { status: 500 })
+        );
+      }
+
       return Promise.resolve(jsonResponse(mediaSources));
     }
 
+    if (path === '/api/libraries/scan-status') {
+      if (libraryScanStatusFailAfterTrigger && scanStatusShouldFail) {
+        return Promise.resolve(new Response(null, { status: 500 }));
+      }
+
+      if (libraryScanStatusSequence) {
+        const sequenceValue = libraryScanStatusSequence[Math.min(scanStatusSequenceIndex, libraryScanStatusSequence.length - 1)];
+        scanStatusSequenceIndex += 1;
+        currentLibraryScanStatuses = sequenceValue;
+        return Promise.resolve(jsonResponse(sequenceValue));
+      }
+
+      return Promise.resolve(jsonResponse(currentLibraryScanStatuses));
+    }
+
+    if (path.match(/^\/api\/libraries\/\d+\/scan$/)) {
+      if (path in mutationFailures) {
+        const failure = mutationFailures[path] as { detail?: string; status?: number; title?: string };
+        const status = failure.status ?? 422;
+
+        if (failure.detail || failure.title) {
+          return Promise.resolve(jsonResponse(failure, status));
+        }
+
+        return Promise.resolve(new Response(null, { status }));
+      }
+
+      currentLibraryScanStatuses = libraryScanStatusesAfterMutation ?? currentLibraryScanStatuses;
+
+      if (libraryScanStatusFailAfterTrigger) {
+        scanStatusShouldFail = true;
+      }
+
+      return Promise.resolve(new Response(null, { status: 200 }));
+    }
+
     if (path === '/api/playouts') {
       return Promise.resolve(jsonResponse(playouts));
     }
diff --git a/web/src/App.tsx b/web/src/App.tsx
index 907921ea6..9a14922f7 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -15,27 +15,33 @@ import {
   Cast,
   Check,
   ChevronDown,
+  Clapperboard,
   CircleHelp,
   Clock,
   ClipboardCopy,
   Copy,
   Film,
+  FileImage,
   Folder,
   FolderInput,
   FolderTree,
   GripVertical,
   Hash,
+  HardDrive,
   Info,
   LayoutDashboard,
   LayoutGrid,
   Library,
   ListVideo,
+  MonitorPlay,
+  Music,
   Plus,
   Pencil,
   Play,
   Radio,
   RefreshCw,
   Search,
+  Server,
   Settings,
   Shuffle,
   Sparkles,
@@ -81,12 +87,16 @@ import {
   useDashboardHealthQuery,
   useDashboardQuery,
   useDashboardVersionQuery,
+  useLibrariesScreenQuery,
   type ChannelState,
   type ChannelSummary,
   type DashboardChannel,
   type SchedulePickerData,
   type DashboardChannelState,
   type DashboardHealthQueryState,
+  type LibraryScanStatus,
+  type MediaSource,
+  type MediaSourceLibrary,
   type MediaCollection,
   type ProgramSchedule,
   type ProgramScheduleItem,
@@ -1821,6 +1831,266 @@ function formatScheduleCollectionType(value: string | undefined): string {
   return formatScheduleEnum(value ?? 'Collection');
 }
 
+function LibrariesLoadingState() {
+  return (
+    <Card title={<h2>Loading libraries</h2>} subtitle="Fetching media sources and active scan status.">
+      <div className="ctv-dashboard-state">
+        <Spinner tone="muted" />
+        <span>Loading libraries</span>
+      </div>
+    </Card>
+  );
+}
+
+function LibrariesErrorState({ error, refresh }: { error: string; refresh: () => void }) {
+  return (
+    <Card
+      title={<h2>Libraries unavailable</h2>}
+      subtitle="The API returned an error while loading media sources."
+      actions={<Button onClick={refresh} startIcon={<RefreshCw aria-hidden="true" size={15} />} variant="secondary">Retry</Button>}
+    >
+      <div className="ctv-channels-error" role="alert">
+        <TriangleAlert aria-hidden="true" size={15} />
+        <span>{error}</span>
+      </div>
+    </Card>
+  );
+}
+
+function LibrariesEmptyState() {
+  return (
+    <Card title={<h2>No media sources</h2>} subtitle="Configure a source in the server setup screens before monitoring scans here.">
+      <div className="ctv-schedule-empty">No media sources returned</div>
+    </Card>
+  );
+}
+
+function LibrariesScreen() {
+  const query = useLibrariesScreenQuery();
+
+  if (query.status === 'loading') {
+    return <LibrariesLoadingState />;
+  }
+
+  if (query.status === 'error') {
+    return <LibrariesErrorState error={query.error} refresh={query.refresh} />;
+  }
+
+  if (query.data.sources.length === 0) {
+    return <LibrariesEmptyState />;
+  }
+
+  const totalItems = query.data.sources.reduce(
+    (sum, source) => sum + source.libraries.reduce((librarySum, library) => librarySum + library.itemCount, 0),
+    0
+  );
+  const scanStatusesByLibraryId = new Map(query.data.scanStatuses.map((status) => [status.libraryId, status]));
+
+  return (
+    <div className="ctv-libraries-screen">
+      <section className="ctv-libraries-header">
+        <div>
+          <span className="ctv-kicker">Sources</span>
+          <h2>Media Libraries</h2>
+          <p>Monitor connected media sources and trigger per-library scans.</p>
+        </div>
+        <div className="ctv-libraries-header-actions">
+          <Button disabled startIcon={<RefreshCw aria-hidden="true" size={15} />} variant="secondary">Scan All</Button>
+          <Button disabled startIcon={<Plus aria-hidden="true" size={15} />}>Add Source</Button>
+        </div>
+      </section>
+
+      {query.error && (
+        <div className="ctv-channels-error" role="alert">
+          <TriangleAlert aria-hidden="true" size={15} />
+          <span>{query.error}</span>
+        </div>
+      )}
+
+      <div className="ctv-libraries-summary">
+        <span>{query.data.sources.length} source{query.data.sources.length === 1 ? '' : 's'}</span>
+        <span>{totalItems.toLocaleString()} items</span>
+        <span><StatusDot status={query.data.scanStatuses.length > 0 ? 'live' : 'ok'} size={7} />{query.data.scanStatuses.length} active scan{query.data.scanStatuses.length === 1 ? '' : 's'}</span>
+      </div>
+
+      <div className="ctv-libraries-grid">
+        {query.data.sources.map((source) => (
+          <MediaSourceCard
+            key={source.id}
+            onScanLibrary={query.scanLibrary}
+            scanStatusesByLibraryId={scanStatusesByLibraryId}
+            scanningLibraryIds={query.scanningLibraryIds}
+            source={source}
+          />
+        ))}
+        <section className="ctv-library-add-card" aria-label="Add media source">
+          <span className="ctv-library-kind-icon ctv-library-kind-local"><Plus aria-hidden="true" size={18} /></span>
+          <div>
+            <h3>Connect a media source</h3>
+            <p>Adding sources is deferred to the existing server setup screens.</p>
+          </div>
+          <div className="ctv-library-add-options" aria-hidden="true">
+            <span><HardDrive size={13} />Local folder</span>
+            <span><Server size={13} />Plex</span>
+            <span><Server size={13} />Jellyfin</span>
+            <span><Server size={13} />Emby</span>
+          </div>
+        </section>
+      </div>
+    </div>
+  );
+}
+
+function MediaSourceCard({
+  onScanLibrary,
+  scanStatusesByLibraryId,
+  scanningLibraryIds,
+  source
+}: {
+  onScanLibrary: (libraryId: number) => Promise<void>;
+  scanStatusesByLibraryId: Map<number, LibraryScanStatus>;
+  scanningLibraryIds: Set<number>;
+  source: MediaSource;
+}) {
+  const totalItems = source.libraries.reduce((sum, library) => sum + library.itemCount, 0);
+  const scanning = source.libraries.some((library) => scanningLibraryIds.has(library.id));
+
+  const scanSource = () => {
+    source.libraries.forEach((library) => {
+      void onScanLibrary(library.id);
+    });
+  };
+
+  return (
+    <section className="ctv-library-source-card" aria-label={`${source.name} media source`}>
+      <div className="ctv-library-source-head">
+        <span className={`ctv-library-kind-icon ctv-library-kind-${source.kind.toLowerCase()}`}>{sourceKindIcon(source.kind)}</span>
+        <div>
+          <div className="ctv-library-source-title">
+            <h3>{source.name}</h3>
+            <StatusDot status={scanning ? 'live' : 'ok'} label={scanning ? 'Scanning' : 'Synced'} size={7} />
+          </div>
+          <span>{source.connectionAddress ?? 'Local connection'}</span>
+        </div>
+        <div className="ctv-library-source-actions">
+          <IconButton disabled={scanning} onClick={scanSource} size="sm" title={`Scan all libraries in ${source.name}`}>
+            <RefreshCw aria-hidden="true" size={15} />
+          </IconButton>
+          <IconButton disabled size="sm" title={`Settings unavailable for ${source.name}`}>
+            <Settings aria-hidden="true" size={15} />
+          </IconButton>
+        </div>
+      </div>
+
+      <div className="ctv-library-list" role="list" aria-label={`${source.name} libraries`}>
+        {source.libraries.length === 0 ? (
+          <div className="ctv-library-empty">No synced libraries returned</div>
+        ) : source.libraries.map((library) => (
+          <LibraryRow
+            key={library.id}
+            library={library}
+            onScanLibrary={onScanLibrary}
+            scanStatus={scanStatusesByLibraryId.get(library.id) ?? null}
+            scanning={scanningLibraryIds.has(library.id)}
+          />
+        ))}
+      </div>
+
+      <div className="ctv-library-source-foot">
+        <span><Clock aria-hidden="true" size={13} />{scanning ? 'Scanning now' : sourceLastScanLabel(source)}</span>
+        <span><code>{totalItems.toLocaleString()}</code> items · {source.libraries.length} librar{source.libraries.length === 1 ? 'y' : 'ies'}</span>
+      </div>
+    </section>
+  );
+}
+
+function LibraryRow({
+  library,
+  onScanLibrary,
+  scanStatus,
+  scanning
+}: {
+  library: MediaSourceLibrary;
+  onScanLibrary: (libraryId: number) => Promise<void>;
+  scanStatus: LibraryScanStatus | null;
+  scanning: boolean;
+}) {
+  const scanActive = scanStatus !== null;
+  const disabled = scanning || scanActive;
+
+  return (
+    <div className="ctv-library-row" role="listitem">
+      <span className="ctv-library-media-icon">{libraryMediaIcon(library.mediaKind)}</span>
+      <div className="ctv-library-row-main">
+        <strong>{library.name}</strong>
+        <span><span>{formatLibraryMediaKind(library.mediaKind)}</span> · <code>{library.itemCount.toLocaleString()}</code> items</span>
+        <small>{library.lastScan ? `Last scan ${formatDateTime(library.lastScan)}` : 'Never scanned'}</small>
+      </div>
+      <div className="ctv-library-row-status">
+        {scanStatus ? (
+          <div className="ctv-library-progress">
+            <ProgressBar value={scanStatus.percent} showLabel />
+            <Badge tone="accent" dot>Scanning</Badge>
+          </div>
+        ) : (
+          <Badge tone="ok" dot>Synced</Badge>
+        )}
+        <IconButton disabled={disabled} onClick={() => void onScanLibrary(library.id)} size="sm" title={`Scan ${library.name}`}>
+          <RefreshCw aria-hidden="true" size={15} />
+        </IconButton>
+      </div>
+    </div>
+  );
+}
+
+function sourceKindIcon(kind: string): ReactNode {
+  return kind === 'Local'
+    ? <HardDrive aria-hidden="true" size={18} />
+    : <Server aria-hidden="true" size={18} />;
+}
+
+function libraryMediaIcon(kind: string): ReactNode {
+  switch (kind) {
+    case 'Movies':
+      return <Clapperboard aria-hidden="true" size={14} />;
+    case 'Shows':
+      return <MonitorPlay aria-hidden="true" size={14} />;
+    case 'MusicVideos':
+    case 'Songs':
+      return <Music aria-hidden="true" size={14} />;
+    case 'Images':
+      return <FileImage aria-hidden="true" size={14} />;
+    case 'RemoteStreams':
+      return <Radio aria-hidden="true" size={14} />;
+    case 'OtherVideos':
+      return <Film aria-hidden="true" size={14} />;
+    default:
+      return <Folder aria-hidden="true" size={14} />;
+  }
+}
+
+function formatLibraryMediaKind(kind: string): string {
+  switch (kind) {
+    case 'MusicVideos':
+      return 'Music Videos';
+    case 'OtherVideos':
+      return 'Other Videos';
+    case 'RemoteStreams':
+      return 'Remote Streams';
+    default:
+      return kind;
+  }
+}
+
+function sourceLastScanLabel(source: MediaSource): string {
+  const scans = source.libraries
+    .map((library) => library.lastScan)
+    .filter((scan): scan is string => Boolean(scan))
+    .sort();
+
+  return scans.length > 0 ? `Last scan ${formatDateTime(scans[scans.length - 1])}` : 'Never scanned';
+}
+
 function PlayoutsLoadingState() {
   return (
     <Card title={<h2>Loading playouts</h2>} subtitle="Fetching playouts, channel state, and upcoming items.">
@@ -2278,6 +2548,10 @@ function ScreenContent({
     return <PlayoutsScreen />;
   }
 
+  if (route.id === 'libraries') {
+    return <LibrariesScreen />;
+  }
+
   return <PlaceholderScreen route={route} />;
 }
 
diff --git a/web/src/api/index.ts b/web/src/api/index.ts
index f96fc41cf..efcdd7471 100644
--- a/web/src/api/index.ts
+++ b/web/src/api/index.ts
@@ -2,6 +2,7 @@ export * from './auth';
 export * from './channels';
 export * from './client';
 export * from './dashboard';
+export * from './libraries';
 export * from './playouts';
 export * from './schedules';
 export * from './useChannelsQuery';
diff --git a/web/src/api/libraries.ts b/web/src/api/libraries.ts
new file mode 100644
index 000000000..f2b78ab8b
--- /dev/null
+++ b/web/src/api/libraries.ts
@@ -0,0 +1,337 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { ApiError, request } from './client';
+import type { components } from './generated/v1';
+
+export type MediaSource = components['schemas']['MediaSourceResponseModel'];
+export type MediaSourceLibrary = components['schemas']['MediaSourceLibraryResponseModel'];
+export type LibraryScanStatus = components['schemas']['LibraryScanStatusResponseModel'];
+
+export interface LibrariesScreenData {
+  scanStatuses: LibraryScanStatus[];
+  sources: MediaSource[];
+}
+
+export type LibrariesScreenQueryState =
+  | {
+      data: LibrariesScreenData;
+      error: string | null;
+      refresh: () => void;
+      scanLibrary: (libraryId: number) => Promise<void>;
+      scanningLibraryIds: Set<number>;
+      status: 'success';
+    }
+  | { data: null; error: string; refresh: () => void; status: 'error' }
+  | { data: null; error: null; refresh: () => void; status: 'loading' };
+
+type LibrariesScreenState =
+  | { data: LibrariesScreenData; error: string | null; pendingLibraryIds: Set<number>; status: 'success' }
+  | { data: null; error: string; status: 'error' }
+  | { data: null; error: null; status: 'loading' };
+
+// A trigger'd scan disappears from the button-disabled set once either: it has been
+// observed at least once in scan-status (promoted to "active"), or this many poll
+// ticks pass without ever appearing (the scanner never picked it up / it failed silently).
+const PENDING_GRACE_TICKS = 3;
+
+export function getMediaSources(): Promise<MediaSource[]> {
+  return request<MediaSource[]>('/api/media-sources');
+}
+
+export function getLibraryScanStatus(): Promise<LibraryScanStatus[]> {
+  // Wire contract: `percent` is a 0-1 FRACTION despite the field name - the backend
+  // never multiplies by 100 (known backend wart, tracked in the handoff backlog).
+  // Normalize to a 0-100 percentage once, here at the API boundary, so every
+  // consumer (ProgressBar, percent labels) works in ordinary percentage terms.
+  return request<LibraryScanStatus[]>('/api/libraries/scan-status').then((scanStatuses) =>
+    scanStatuses.map((scanStatus) => ({ ...scanStatus, percent: scanStatus.percent * 100 }))
+  );
+}
+
+export function scanLibrary(libraryId: number): Promise<void> {
+  return request<void>(`/api/libraries/${libraryId}/scan`, { method: 'POST' });
+}
+
+// Pure: computes the surviving pending-id set for one poll tick (success or failure) and
+// mutates the grace-ticks map in place (delete on promote/expire, set on decrement) -
+// callers must still write pendingIdsRef.current with the returned set themselves, and
+// must call this exactly once per tick before that write to keep it a single, ref-free
+// computation that's safe to run under StrictMode double-invocation.
+function pruneGraceExpiredPending(
+  pendingIds: Set<number>,
+  graceTicks: Map<number, number>,
+  isSeenActive: (libraryId: number) => boolean
+): Set<number> {
+  const nextPending = new Set<number>();
+
+  pendingIds.forEach((libraryId) => {
+    if (isSeenActive(libraryId)) {
+      // Seen active at least once - normal active/inactive pruning takes over.
+      graceTicks.delete(libraryId);
+      return;
+    }
+
+    const ticksRemaining = (graceTicks.get(libraryId) ?? PENDING_GRACE_TICKS) - 1;
+
+    if (ticksRemaining <= 0) {
+      // Grace window expired without ever appearing in scan-status - give up on it.
+      graceTicks.delete(libraryId);
+      return;
+    }
+
+    graceTicks.set(libraryId, ticksRemaining);
+    nextPending.add(libraryId);
+  });
+
+  return nextPending;
+}
+
+export function useLibrariesScreenQuery(pollMs = 10000): LibrariesScreenQueryState {
+  const [state, setState] = useState<LibrariesScreenState>({
+    data: null,
+    error: null,
+    status: 'loading'
+  });
+  const activeRef = useRef(true);
+  const hadScanInProgressRef = useRef(false);
+  // Mirrors of the corresponding state, kept in sync synchronously so triggerScan can
+  // guard against double-submits without waiting for a render.
+  const pendingIdsRef = useRef<Set<number>>(new Set());
+  const activeIdsRef = useRef<Set<number>>(new Set());
+  const pendingGraceTicksRef = useRef<Map<number, number>>(new Map());
+
+  useEffect(() => {
+    activeRef.current = true;
+
+    return () => {
+      activeRef.current = false;
+    };
+  }, []);
+
+  const loadSources = useCallback(() => {
+    getMediaSources()
+      .then((sources) => {
+        if (!activeRef.current) {
+          return;
+        }
+
+        setState((current) => {
+          if (current.status !== 'success') {
+            return current;
+          }
+
+          return {
+            data: { scanStatuses: current.data.scanStatuses, sources },
+            error: null,
+            pendingLibraryIds: current.pendingLibraryIds,
+            status: 'success'
+          };
+        });
+      })
+      .catch(() => {
+        // A completion refresh should not hide the screen if the source reload fails.
+      });
+  }, []);
+
+  const loadScanStatuses = useCallback(() => {
+    return getLibraryScanStatus()
+      .then((scanStatuses) => {
+        if (!activeRef.current) {
+          return;
+        }
+
+        const activeScanIds = new Set(scanStatuses.map((scan) => scan.libraryId));
+        activeIdsRef.current = activeScanIds;
+
+        const hadScanInProgress = hadScanInProgressRef.current;
+        hadScanInProgressRef.current = scanStatuses.length > 0;
+
+        // Compute the pruned/promoted pending set - and write the grace-tick and pending
+        // refs - OUTSIDE the setState updater. Updaters must be pure: StrictMode double-
+        // invokes them (which would double-decrement grace ticks) and concurrent rendering
+        // may invoke-and-discard one. Mirrors how activeIdsRef is written above.
+        const nextPending = pruneGraceExpiredPending(pendingIdsRef.current, pendingGraceTicksRef.current, (libraryId) =>
+          activeScanIds.has(libraryId)
+        );
+
+        pendingIdsRef.current = nextPending;
+
+        setState((current) => {
+          if (current.status !== 'success') {
+            return current;
+          }
+
+          return {
+            data: { scanStatuses, sources: current.data.sources },
+            error: null,
+            pendingLibraryIds: nextPending,
+            status: 'success'
+          };
+        });
+
+        if (hadScanInProgress && scanStatuses.length === 0) {
+          loadSources();
+        }
+      })
+      .catch(() => {
+        if (!activeRef.current) {
+          return;
+        }
+
+        // A status-fetch failure never promotes a pending id to active, so it never
+        // survives via "seen active" - it just burns down the same grace budget as a
+        // successful poll that never saw it. This keeps a persistently-erroring endpoint
+        // from leaving the scan button disabled and the poll interval running forever.
+        // Active-scan state (activeIdsRef / scanStatuses) is left untouched: a transient
+        // failure must not kill an in-progress scan's UI.
+        const nextPending = pruneGraceExpiredPending(pendingIdsRef.current, pendingGraceTicksRef.current, () => false);
+
+        pendingIdsRef.current = nextPending;
+
+        setState((current) => {
+          if (current.status !== 'success') {
+            return current;
+          }
+
+          return {
+            data: current.data,
+            error: current.error,
+            pendingLibraryIds: nextPending,
+            status: 'success'
+          };
+        });
+      });
+  }, [loadSources]);
+
+  const load = useCallback(() => {
+    Promise.all([getMediaSources(), getLibraryScanStatus()])
+      .then(([sources, scanStatuses]) => {
+        if (!activeRef.current) {
+          return;
+        }
+
+        hadScanInProgressRef.current = scanStatuses.length > 0;
+        pendingIdsRef.current = new Set();
+        activeIdsRef.current = new Set(scanStatuses.map((scan) => scan.libraryId));
+        pendingGraceTicksRef.current = new Map();
+        setState({
+          data: { scanStatuses, sources },
+          error: null,
+          pendingLibraryIds: new Set(),
+          status: 'success'
+        });
+      })
+      .catch((error: unknown) => {
+        if (activeRef.current) {
+          setState({ data: null, error: messageFromLibrariesError(error, 'Unable to load libraries'), status: 'error' });
+        }
+      });
+  }, []);
+
+  useEffect(() => {
+    load();
+  }, [load]);
+
+  const hasActiveScans =
+    state.status === 'success' && (state.pendingLibraryIds.size > 0 || state.data.scanStatuses.length > 0);
+
+  useEffect(() => {
+    if (!hasActiveScans) {
+      return undefined;
+    }
+
+    const intervalId = window.setInterval(loadScanStatuses, Math.max(pollMs, 10000));
+
+    return () => {
+      window.clearInterval(intervalId);
+    };
+  }, [hasActiveScans, loadScanStatuses, pollMs]);
+
+  const refresh = useCallback(() => {
+    setState({ data: null, error: null, status: 'loading' });
+    load();
+  }, [load]);
+
+  const triggerScan = useCallback((libraryId: number): Promise<void> => {
+    if (pendingIdsRef.current.has(libraryId) || activeIdsRef.current.has(libraryId)) {
+      // Already pending or active - ignore the duplicate submission.
+      return Promise.resolve();
+    }
+
+    pendingIdsRef.current = new Set(pendingIdsRef.current).add(libraryId);
+    pendingGraceTicksRef.current.set(libraryId, PENDING_GRACE_TICKS);
+
+    setState((current) => {
+      if (current.status !== 'success') {
+        return current;
+      }
+
+      return {
+        data: current.data,
+        error: null,
+        pendingLibraryIds: new Set(current.pendingLibraryIds).add(libraryId),
+        status: 'success'
+      };
+    });
+
+    return scanLibrary(libraryId)
+      .then(() => loadScanStatuses())
+      .catch((error: unknown) => {
+        const pendingIds = new Set(pendingIdsRef.current);
+        pendingIds.delete(libraryId);
+        pendingIdsRef.current = pendingIds;
+        pendingGraceTicksRef.current.delete(libraryId);
+
+        if (!activeRef.current) {
+          return;
+        }
+
+        setState((current) => {
+          if (current.status !== 'success') {
+            return current;
+          }
+
+          const pendingLibraryIds = new Set(current.pendingLibraryIds);
+          pendingLibraryIds.delete(libraryId);
+
+          return {
+            data: current.data,
+            error: messageFromLibrariesError(error, 'Unable to scan library'),
+            pendingLibraryIds,
+            status: 'success'
+          };
+        });
+      });
+  }, [loadScanStatuses]);
+
+  if (state.status === 'success') {
+    const activeLibraryIds = new Set(state.data.scanStatuses.map((scan) => scan.libraryId));
+    const scanningLibraryIds = new Set([...state.pendingLibraryIds, ...activeLibraryIds]);
+
+    return {
+      data: state.data,
+      error: state.error,
+      refresh,
+      scanLibrary: triggerScan,
+      scanningLibraryIds,
+      status: 'success'
+    };
+  }
+
+  if (state.status === 'error') {
+    return { data: null, error: state.error, refresh, status: 'error' };
+  }
+
+  return { data: null, error: null, refresh, status: 'loading' };
+}
+
+function messageFromLibrariesError(error: unknown, fallback = 'Unable to load libraries'): string {
+  if (error instanceof ApiError) {
+    return error.detail ?? error.message;
+  }
+
+  if (error instanceof Error) {
+    return error.message;
+  }
+
+  return fallback;
+}
diff --git a/web/src/shell.css b/web/src/shell.css
index 6e44a4428..2dbfe68ff 100644
--- a/web/src/shell.css
+++ b/web/src/shell.css
@@ -1650,6 +1650,248 @@
   font-size: var(--text-2xs, 11px);
 }
 
+.ctv-libraries-screen {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  gap: var(--space-6, 12px);
+}
+
+.ctv-libraries-header {
+  display: flex;
+  align-items: center;
+  gap: var(--space-7, 16px);
+  justify-content: space-between;
+  border: 1px solid var(--border-hairline);
+  border-radius: var(--radius-md, 7px);
+  background: var(--surface-card);
+  padding: var(--space-7, 16px) var(--space-8, 20px);
+}
+
+.ctv-libraries-header h2 {
+  margin: var(--space-2, 4px) 0;
+  color: var(--text-primary);
+  font-size: var(--text-xl, 20px);
+  line-height: 1.15;
+}
+
+.ctv-libraries-header p {
+  margin: 0;
+  color: var(--text-secondary);
+  font-size: var(--text-sm, 13px);
+}
+
+.ctv-libraries-header-actions,
+.ctv-libraries-summary {
+  display: flex;
+  align-items: center;
+  gap: var(--space-5, 10px);
+  flex-wrap: wrap;
+}
+
+.ctv-libraries-summary {
+  color: var(--text-secondary);
+  font-size: var(--text-xs, 12px);
+}
+
+.ctv-libraries-summary span {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--space-3, 6px);
+}
+
+.ctv-libraries-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
+  align-items: start;
+  gap: var(--space-7, 16px);
+}
+
+.ctv-library-source-card,
+.ctv-library-add-card {
+  overflow: hidden;
+  border: 1px solid var(--border-hairline);
+  border-radius: var(--radius-md, 7px);
+  background: var(--surface-card);
+}
+
+.ctv-library-source-head {
+  display: grid;
+  grid-template-columns: 34px minmax(0, 1fr) auto;
+  align-items: center;
+  gap: var(--space-5, 10px);
+  border-bottom: 1px solid var(--border-hairline);
+  padding: var(--space-6, 12px) var(--space-7, 16px);
+}
+
+.ctv-library-kind-icon,
+.ctv-library-media-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  flex: 0 0 auto;
+}
+
+.ctv-library-source-actions {
+  display: flex;
+  align-items: center;
+  gap: var(--space-2, 4px);
+}
+
+.ctv-library-kind-icon {
+  width: 34px;
+  height: 34px;
+  border-radius: var(--radius-sm, 5px);
+  background: var(--ctv-surface-3);
+  color: var(--ctv-accent);
+}
+
+.ctv-library-kind-plex {
+  color: #e5a00d;
+}
+
+.ctv-library-kind-jellyfin {
+  color: #8a5cf6;
+}
+
+.ctv-library-kind-emby {
+  color: #52b54b;
+}
+
+.ctv-library-source-title {
+  display: flex;
+  align-items: center;
+  min-width: 0;
+  gap: var(--space-4, 8px);
+}
+
+.ctv-library-source-title h3,
+.ctv-library-add-card h3 {
+  margin: 0;
+  color: var(--text-primary);
+  font-size: var(--text-sm, 13px);
+  line-height: 1.15;
+}
+
+.ctv-library-source-head span:not(.ctv-library-kind-icon),
+.ctv-library-source-foot,
+.ctv-library-row-main span,
+.ctv-library-row-main small,
+.ctv-library-add-card p {
+  color: var(--text-secondary);
+  font-size: var(--text-xs, 12px);
+}
+
+.ctv-library-list {
+  display: grid;
+}
+
+.ctv-library-row {
+  display: grid;
+  grid-template-columns: 28px minmax(0, 1fr) auto;
+  align-items: center;
+  gap: var(--space-5, 10px);
+  border-top: 1px solid var(--border-hairline);
+  padding: var(--space-5, 10px) var(--space-7, 16px);
+}
+
+.ctv-library-row:first-child {
+  border-top: 0;
+}
+
+.ctv-library-media-icon {
+  width: 28px;
+  height: 28px;
+  border-radius: var(--radius-xs, 3px);
+  background: var(--ctv-bg-sunken);
+  color: var(--text-secondary);
+}
+
+.ctv-library-row-main {
+  display: grid;
+  min-width: 0;
+  gap: var(--space-2, 4px);
+}
+
+.ctv-library-row-main strong {
+  overflow: hidden;
+  color: var(--text-primary);
+  font-size: var(--text-sm, 13px);
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.ctv-library-row-status {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: var(--space-4, 8px);
+}
+
+.ctv-library-progress {
+  display: grid;
+  width: 118px;
+  gap: var(--space-3, 6px);
+}
+
+.ctv-library-source-foot {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--space-5, 10px);
+  border-top: 1px solid var(--border-hairline);
+  background: var(--ctv-bg-sunken);
+  padding: var(--space-5, 10px) var(--space-7, 16px);
+}
+
+.ctv-library-source-foot span {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--space-3, 6px);
+}
+
+.ctv-library-empty {
+  color: var(--text-disabled);
+  font-size: var(--text-xs, 12px);
+  padding: var(--space-7, 16px);
+}
+
+.ctv-library-add-card {
+  display: flex;
+  min-height: 190px;
+  flex-direction: column;
+  align-items: flex-start;
+  justify-content: center;
+  gap: var(--space-6, 12px);
+  border-style: dashed;
+  border-color: var(--border-control);
+  padding: var(--space-7, 16px);
+}
+
+.ctv-library-add-card p {
+  margin: var(--space-2, 4px) 0 0;
+  line-height: 1.4;
+}
+
+.ctv-library-add-options {
+  display: flex;
+  flex-wrap: wrap;
+  gap: var(--space-3, 6px);
+}
+
+.ctv-library-add-options span {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--space-3, 6px);
+  border: 1px solid var(--border-hairline);
+  border-radius: var(--radius-sm, 5px);
+  background: var(--ctv-surface-2);
+  color: var(--text-secondary);
+  font-size: var(--text-xs, 12px);
+  font-weight: var(--weight-medium, 500);
+  padding: var(--space-3, 6px) var(--space-5, 10px);
+}
+
 @media (max-width: 980px) {
   .ctv-app-shell {
     grid-template-columns: 1fr;
@@ -1721,10 +1963,26 @@
   .ctv-schedule-form-grid,
   .ctv-playouts-grid,
   .ctv-playout-detail-grid,
-  .ctv-playouts-cards {
+  .ctv-playouts-cards,
+  .ctv-libraries-grid {
     grid-template-columns: 1fr;
   }
 
+  .ctv-libraries-header,
+  .ctv-library-source-foot {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .ctv-library-row {
+    grid-template-columns: 28px minmax(0, 1fr);
+  }
+
+  .ctv-library-row-status {
+    grid-column: 2 / -1;
+    justify-content: flex-start;
+  }
+
   .ctv-schedule-block-main {
     grid-template-columns: 16px 38px minmax(0, 1fr);
   }