diff --git a/apps/web/src/components/dashboard/widgets/proxmox-widget-model.test.ts b/apps/web/src/components/dashboard/widgets/proxmox-widget-model.test.ts
new file mode 100644
index 0000000..46a93a7
--- /dev/null
+++ b/apps/web/src/components/dashboard/widgets/proxmox-widget-model.test.ts
@@ -0,0 +1,290 @@
+import { describe, expect, it } from 'vitest';
+import type { ProxmoxMetrics, ProxmoxServer } from '@/lib/proxmox-api';
+import {
+  healthSummary,
+  resolveProxmoxWidgetConfig,
+  selectServers,
+  widgetKeyFigure,
+} from './proxmox-widget-model';
+
+const NOW = Date.parse('2026-09-24T12:00:00.000Z');
+const NOW_S = NOW / 1000;
+const POLLED_AT = '2026-09-24T11:58:00.000Z';
+
+function server(
+  overrides: Partial<ProxmoxServer> & {
+    metrics?: ProxmoxMetrics | null;
+    reachable?: boolean;
+    polled?: boolean;
+  } = {},
+): ProxmoxServer {
+  const { metrics = null, reachable = true, polled = true, ...rest } = overrides;
+  const id = rest.id ?? 'srv';
+  return {
+    id,
+    tenantId: 't1',
+    name: id,
+    productType: metrics?.productType ?? 'pve',
+    baseUrl: 'https://x.intern',
+    authMethod: 'token',
+    tokenId: 'a@pam!b',
+    username: null,
+    tlsRejectUnauthorized: true,
+    isActive: true,
+    pollIntervalMin: 5,
+    position: 0,
+    createdAt: POLLED_AT,
+    updatedAt: POLLED_AT,
+    status: {
+      id: `st-${id}`,
+      serverId: id,
+      lastPolledAt: polled ? POLLED_AT : null,
+      lastOkAt: reachable ? POLLED_AT : null,
+      reachable,
+      errorKind: reachable ? null : 'netz',
+      errorDetail: null,
+      rawSample: null,
+      updatedAt: POLLED_AT,
+      metrics,
+    },
+    ...rest,
+  };
+}
+
+function pve(
+  overrides: Partial<Extract<ProxmoxMetrics, { productType: 'pve' }>> = {},
+): ProxmoxMetrics {
+  return {
+    productType: 'pve',
+    nodeCount: 1,
+    guestsRunning: 3,
+    guestsStopped: 1,
+    nodes: [{ node: 'n1', cpu: 0.1, maxcpu: 8, mem: 1, maxmem: 10 }],
+    storages: [{ storage: 'local', node: 'n1', disk: 1, maxdisk: 10 }],
+    ...overrides,
+  };
+}
+
+function pbsDatastore(lastBackupAt: number | null) {
+  return {
+    name: `ds-${lastBackupAt}`,
+    total: 100,
+    used: 10,
+    free: 90,
+    lastBackupAt,
+    lastVerifyState: 'ok',
+  };
+}
+
+describe('healthSummary', () => {
+  it('alle ok -> allOk, keine Eintraege, worst ok', () => {
+    expect(healthSummary({ down: 0, warn: 0, ok: 3, idle: 0, orphan: 0 })).toEqual({
+      allOk: true,
+      entries: [],
+      worst: 'ok',
+    });
+  });
+
+  it('Abweichungen in HEALTH_ORDER, ok wird nicht genannt, worst = schlimmster', () => {
+    expect(healthSummary({ down: 1, warn: 2, ok: 5, idle: 0, orphan: 1 })).toEqual({
+      allOk: false,
+      entries: [
+        { health: 'down', count: 1 },
+        { health: 'warn', count: 2 },
+        { health: 'orphan', count: 1 },
+      ],
+      worst: 'down',
+    });
+  });
+
+  it('keine Server -> nicht allOk, worst null', () => {
+    expect(healthSummary({ down: 0, warn: 0, ok: 0, idle: 0, orphan: 0 })).toEqual({
+      allOk: false,
+      entries: [],
+      worst: null,
+    });
+  });
+});
+
+describe('resolveProxmoxWidgetConfig', () => {
+  it('leere Konfiguration -> leerer Titel, keine Auswahl', () => {
+    expect(resolveProxmoxWidgetConfig({})).toEqual({ title: '', serverIds: [] });
+  });
+
+  it('Titel, der kein String ist, wird leer', () => {
+    expect(resolveProxmoxWidgetConfig({ title: 42 }).title).toBe('');
+    expect(resolveProxmoxWidgetConfig({ title: null }).title).toBe('');
+  });
+
+  it('Titel als String bleibt erhalten', () => {
+    expect(resolveProxmoxWidgetConfig({ title: 'Rechenzentrum' }).title).toBe('Rechenzentrum');
+  });
+
+  it('serverIds, das kein Array ist, wird leer', () => {
+    expect(resolveProxmoxWidgetConfig({ serverIds: 'a' }).serverIds).toEqual([]);
+    expect(resolveProxmoxWidgetConfig({ serverIds: { a: 1 } }).serverIds).toEqual([]);
+  });
+
+  it('Nicht-Strings und leere Strings fallen weg, doppelte Kennungen einmal', () => {
+    expect(
+      resolveProxmoxWidgetConfig({ serverIds: ['a', 1, '', null, 'b', 'a', { id: 'c' }] })
+        .serverIds,
+    ).toEqual(['a', 'b']);
+  });
+});
+
+describe('selectServers', () => {
+  const list = [server({ id: 'a' }), server({ id: 'b' }), server({ id: 'c' })];
+
+  it('leere Auswahl liefert alle Server', () => {
+    expect(selectServers(list, [])).toEqual({ servers: list, selectionGone: false });
+  });
+
+  it('Auswahl filtert nach Kennung', () => {
+    const result = selectServers(list, ['c', 'a']);
+    expect(result.servers.map((s) => s.id)).toEqual(['a', 'c']);
+    expect(result.selectionGone).toBe(false);
+  });
+
+  it('nur noch geloeschte Kennungen ausgewaehlt -> leere Liste, selectionGone', () => {
+    expect(selectServers(list, ['weg', 'auch-weg'])).toEqual({
+      servers: [],
+      selectionGone: true,
+    });
+  });
+
+  it('eine geloeschte und eine vorhandene Kennung -> nur die vorhandene', () => {
+    const result = selectServers(list, ['weg', 'b']);
+    expect(result.servers.map((s) => s.id)).toEqual(['b']);
+    expect(result.selectionGone).toBe(false);
+  });
+});
+
+describe('widgetKeyFigure', () => {
+  it('down, idle, orphan liefern den Zustand, auch mit alten Messwerten', () => {
+    expect(widgetKeyFigure(server({ reachable: false, metrics: pve() }), NOW)).toEqual({
+      kind: 'status',
+      health: 'down',
+    });
+    expect(widgetKeyFigure(server({ polled: false }), NOW)).toEqual({
+      kind: 'status',
+      health: 'idle',
+    });
+    expect(widgetKeyFigure(server({ isActive: false, metrics: pve() }), NOW)).toEqual({
+      kind: 'status',
+      health: 'orphan',
+    });
+  });
+
+  it('erreichbarer Server ohne Messwerte -> unknown', () => {
+    expect(widgetKeyFigure(server({ metrics: null }), NOW)).toEqual({ kind: 'unknown' });
+  });
+
+  it('PVE ok -> laufende Gaeste, total = laufend + gestoppt', () => {
+    expect(widgetKeyFigure(server({ metrics: pve() }), NOW)).toEqual({
+      kind: 'guests',
+      running: 3,
+      total: 4,
+    });
+  });
+
+  it('PVE ok ohne Gaeste -> noGuests', () => {
+    expect(
+      widgetKeyFigure(server({ metrics: pve({ guestsRunning: 0, guestsStopped: 0 }) }), NOW),
+    ).toEqual({ kind: 'noGuests' });
+  });
+
+  it('PVE mit unbekannter Gaestezahl -> unknown, nie 0', () => {
+    const metrics = pve({
+      guestsRunning: null as unknown as number,
+      guestsStopped: 1,
+    });
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({ kind: 'unknown' });
+  });
+
+  it('PVE warn -> hoechster bekannter Anteil aus CPU, RAM und Speicher', () => {
+    const metrics = pve({
+      nodes: [
+        { node: 'n1', cpu: 0.5, maxcpu: 8, mem: 87, maxmem: 100 },
+        { node: 'n2', cpu: null, maxcpu: 8, mem: null, maxmem: 100 },
+      ],
+      storages: [{ storage: 's', node: 'n1', disk: 70, maxdisk: 100 }],
+    });
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({
+      kind: 'load',
+      fraction: 0.87,
+      level: 'warn',
+    });
+  });
+
+  it('PVE warn durch Speicher -> Anteil des Speichers mit Stufe crit', () => {
+    const metrics = pve({
+      nodes: [{ node: 'n1', cpu: 0.2, maxcpu: 8, mem: 1, maxmem: 10 }],
+      storages: [{ storage: 's', node: 'n1', disk: 95, maxdisk: 100 }],
+    });
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({
+      kind: 'load',
+      fraction: 0.95,
+      level: 'crit',
+    });
+  });
+
+  it('PBS -> aelteste bekannte letzte Sicherung samt stale-Flag', () => {
+    const old = NOW_S - 30 * 3600;
+    const fresh = NOW_S - 2 * 3600;
+    const metrics: ProxmoxMetrics = {
+      productType: 'pbs',
+      datastores: [pbsDatastore(fresh), pbsDatastore(null), pbsDatastore(old)],
+    };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({
+      kind: 'backup',
+      at: old,
+      stale: true,
+    });
+  });
+
+  it('PBS mit frischer Sicherung -> nicht stale', () => {
+    const fresh = NOW_S - 5 * 3600;
+    const metrics: ProxmoxMetrics = { productType: 'pbs', datastores: [pbsDatastore(fresh)] };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({
+      kind: 'backup',
+      at: fresh,
+      stale: false,
+    });
+  });
+
+  it('PBS: Datenspeicher ohne jede Sicherung -> noBackup', () => {
+    const metrics: ProxmoxMetrics = {
+      productType: 'pbs',
+      datastores: [pbsDatastore(null), pbsDatastore(null)],
+    };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({ kind: 'noBackup' });
+  });
+
+  it('PBS ohne Datenspeicher -> unknown', () => {
+    const metrics: ProxmoxMetrics = { productType: 'pbs', datastores: [] };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({ kind: 'unknown' });
+  });
+
+  it('PMG -> eingehende Mails aus countIn', () => {
+    const metrics: ProxmoxMetrics = {
+      productType: 'pmg',
+      countIn: 12904,
+      countOut: 5,
+      spamCount: 1,
+      virusCount: 0,
+    };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({ kind: 'mailIn', count: 12904 });
+  });
+
+  it('PMG mit countIn null -> unknown, nie 0', () => {
+    const metrics: ProxmoxMetrics = {
+      productType: 'pmg',
+      countIn: null,
+      countOut: null,
+      spamCount: null,
+      virusCount: null,
+    };
+    expect(widgetKeyFigure(server({ metrics }), NOW)).toEqual({ kind: 'unknown' });
+  });
+});
diff --git a/apps/web/src/components/dashboard/widgets/proxmox-widget.test.tsx b/apps/web/src/components/dashboard/widgets/proxmox-widget.test.tsx
index 8f77af2..fc724f8 100644
--- a/apps/web/src/components/dashboard/widgets/proxmox-widget.test.tsx
+++ b/apps/web/src/components/dashboard/widgets/proxmox-widget.test.tsx
@@ -1,4 +1,4 @@
-import { cleanup, render as rtlRender, screen, waitFor } from '@testing-library/react';
+import { act, cleanup, render as rtlRender, screen, waitFor, within } from '@testing-library/react';
 import { NextIntlClientProvider } from 'next-intl';
 import type { ReactElement } from 'react';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
@@ -231,3 +231,293 @@ describe('ProxmoxWidget: Lade-, Leer- und Fehlerzustand (quick-260924-i8v)', ()
     expect(mockPollServer).not.toHaveBeenCalled();
   });
 });
+
+function rowNames(): string[] {
+  return screen
+    .getAllByTestId('proxmox-row')
+    .map((row) => row.getAttribute('data-server-name') ?? '');
+}
+
+describe('ProxmoxWidget: Serverliste mit Kennzahl (quick-260924-i8v, Aufgabe 2)', () => {
+  it('Zeilen stehen in der Reihenfolge down, warn, ok, idle, orphan', async () => {
+    mockListServers.mockResolvedValue([
+      makeServer('orphan', { position: 0 }),
+      makeServer('ok', { position: 1 }),
+      makeServer('idle', { position: 2 }),
+      makeServer('warn', { position: 3 }),
+      makeServer('down', { position: 4 }),
+    ]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    expect(rowNames()).toEqual([
+      'server-down',
+      'server-warn',
+      'server-ok',
+      'server-idle',
+      'server-orphan',
+    ]);
+  });
+
+  it('zeigt je Zeile genau eine Kennzahl in Worten', async () => {
+    const backupAt = Math.floor(Date.now() / 1000) - 5 * 3600;
+    mockListServers.mockResolvedValue([
+      makeServer('ok', { id: 'pve', name: 'pve-ok' }),
+      makeServer('warn', { id: 'pve-w', name: 'pve-warn' }),
+      makeServer('ok', {
+        id: 'pbs',
+        name: 'pbs-ok',
+        productType: 'pbs',
+        metrics: {
+          productType: 'pbs',
+          datastores: [
+            {
+              name: 'ds',
+              total: 100,
+              used: 10,
+              free: 90,
+              lastBackupAt: backupAt,
+              lastVerifyState: 'ok',
+            },
+          ],
+        },
+      }),
+      makeServer('ok', {
+        id: 'pmg',
+        name: 'pmg-ok',
+        productType: 'pmg',
+        metrics: {
+          productType: 'pmg',
+          countIn: 12904,
+          countOut: 10,
+          spamCount: 2,
+          virusCount: 0,
+        },
+      }),
+      makeServer('down'),
+      makeServer('orphan'),
+      makeServer('idle'),
+    ]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    const figure = (name: string) =>
+      within(
+        screen
+          .getAllByTestId('proxmox-row')
+          .find((row) => row.getAttribute('data-server-name') === name) as HTMLElement,
+      ).getByTestId('proxmox-key-figure');
+
+    expect(figure('pve-ok')).toHaveTextContent('3/4 Gäste laufen');
+    expect(figure('pve-warn').textContent).toMatch(/^Auslastung 87\s%$/);
+    expect(figure('pve-warn')).toHaveClass('text-status-warn-fg');
+    expect(figure('pbs-ok')).toHaveTextContent('Sicherung vor 5 Std.');
+    expect(figure('pmg-ok')).toHaveTextContent('12.904 eingehend');
+    expect(figure('server-down')).toHaveTextContent('nicht erreichbar');
+    expect(figure('server-down')).toHaveClass('text-status-down-fg');
+    expect(figure('server-down')).toHaveAttribute('aria-hidden', 'true');
+    expect(figure('server-orphan')).toHaveTextContent('offline & verwaist');
+    expect(figure('server-idle')).toHaveTextContent('noch nicht abgefragt');
+  });
+
+  it('unbekannte Werte heissen „unbekannt“ und nie 0', async () => {
+    mockListServers.mockResolvedValue([
+      makeServer('ok', { id: 'pve', name: 'pve-leer', metrics: null }),
+      makeServer('ok', {
+        id: 'pmg',
+        name: 'pmg-leer',
+        productType: 'pmg',
+        metrics: {
+          productType: 'pmg',
+          countIn: null,
+          countOut: null,
+          spamCount: null,
+          virusCount: null,
+        },
+      }),
+    ]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    const figures = screen.getAllByTestId('proxmox-key-figure');
+    expect(figures.map((f) => f.textContent)).toEqual(['unbekannt', 'unbekannt']);
+    expect(screen.queryByText(/0 eingehend/)).toBeNull();
+    expect(screen.queryByText(/0\s%/)).toBeNull();
+  });
+
+  it('jede Zeile nennt den Zustand auch fuer Vorleser (nicht nur Farbe)', async () => {
+    mockListServers.mockResolvedValue([makeServer('warn')]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    expect(screen.getByText('Warnung')).toHaveClass('sr-only');
+  });
+
+  it('Kennzahl, Liste und Name tragen die Klassen der Groessenstufen', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok'), makeServer('orphan')]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    const list = screen.getByTestId('proxmox-list');
+    expect(list.tagName).toBe('UL');
+    expect(list).toHaveClass('[@container(max-height:7.5rem)]:hidden');
+    expect(list).toHaveClass('@max-[8rem]:hidden');
+    for (const figure of screen.getAllByTestId('proxmox-key-figure')) {
+      expect(figure).toHaveClass('@max-[15rem]:hidden');
+    }
+    // verwaist: nur der Name wird gedaempft
+    expect(screen.getByText('server-orphan')).toHaveClass('opacity-70');
+    expect(screen.getByText('server-ok')).not.toHaveClass('opacity-70');
+  });
+});
+
+describe('ProxmoxWidget: Serverauswahl, Titel, Links (quick-260924-i8v, Aufgabe 2)', () => {
+  it('config.serverIds beschraenkt Zeilen UND Balken/Zusammenfassung auf die Auswahl', async () => {
+    mockListServers.mockResolvedValue([
+      makeServer('ok', { id: 'a', name: 'pve-a' }),
+      makeServer('down', { id: 'b', name: 'pve-b' }),
+    ]);
+    await renderWidget({ config: { serverIds: ['a'] } });
+
+    const summary = await screen.findByTestId('proxmox-summary');
+    expect(summary).toHaveTextContent('Alles in Ordnung');
+    expect(rowNames()).toEqual(['pve-a']);
+    expect(screen.getByTestId('health-bar').querySelectorAll('[data-segment]')).toHaveLength(1);
+  });
+
+  it('nur geloeschte Kennungen ausgewaehlt: Satz statt Balken und Liste', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok', { id: 'a' })]);
+    await renderWidget({ config: { serverIds: ['weg'] } });
+
+    expect(
+      await screen.findByText(
+        'Die ausgewählten Server gibt es nicht mehr. Wählen Sie im Bearbeitungsmodus andere aus.',
+      ),
+    ).toBeInTheDocument();
+    expect(screen.queryByTestId('health-bar')).toBeNull();
+    expect(screen.queryByTestId('proxmox-list')).toBeNull();
+  });
+
+  it('Ansichtsmodus: jede Zeile ist ein Link auf /modules/proxmox', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok'), makeServer('down')]);
+    await renderWidget();
+
+    await screen.findByTestId('proxmox-summary');
+    const links = screen.getAllByRole('link');
+    expect(links).toHaveLength(2);
+    for (const link of links) expect(link).toHaveAttribute('href', '/modules/proxmox');
+  });
+
+  it('Bearbeitungsmodus: keine Links in der Kachel', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok'), makeServer('down')]);
+    await renderWidget({ isEditMode: true });
+
+    await screen.findByTestId('proxmox-summary');
+    expect(screen.getAllByTestId('proxmox-row')).toHaveLength(2);
+    expect(screen.queryByRole('link')).toBeNull();
+  });
+
+  it('Titel gesetzt: Ueberschrift h2', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok')]);
+    await renderWidget({ config: { title: 'Rechenzentrum' } });
+
+    expect(await screen.findByRole('heading', { level: 2, name: 'Rechenzentrum' })).toBeVisible();
+  });
+
+  it('Titel leer: keine Kopfzeile', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok')]);
+    await renderWidget({ config: { title: '   ' } });
+
+    await screen.findByTestId('proxmox-summary');
+    expect(screen.queryByRole('heading')).toBeNull();
+  });
+});
+
+describe('ProxmoxWidget: Minutentakt (quick-260924-i8v, Aufgabe 2)', () => {
+  let visibility: DocumentVisibilityState = 'visible';
+
+  beforeEach(() => {
+    visibility = 'visible';
+    Object.defineProperty(document, 'visibilityState', {
+      configurable: true,
+      get: () => visibility,
+    });
+    // Nur die Intervall-Zeitgeber faelschen: die Warte-Helfer der Testing
+    // Library laufen weiter ueber echte Zeitgeber.
+    vi.useFakeTimers({ toFake: ['setInterval', 'clearInterval'] });
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    // Eigene Eigenschaft entfernen, damit wieder die von Document.prototype gilt.
+    delete (document as unknown as Record<string, unknown>).visibilityState;
+  });
+
+  async function flush() {
+    await act(async () => {
+      await Promise.resolve();
+    });
+  }
+
+  async function advance(ms: number) {
+    await act(async () => {
+      await vi.advanceTimersByTimeAsync(ms);
+    });
+  }
+
+  it('laedt nach 60 s erneut aus dem Zwischenlager', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok')]);
+    await renderWidget();
+    await flush();
+    expect(mockListServers).toHaveBeenCalledTimes(1);
+
+    await advance(60_000);
+    expect(mockListServers).toHaveBeenCalledTimes(2);
+    expect(mockPollServer).not.toHaveBeenCalled();
+  });
+
+  it('pausiert bei verborgenem Tab und laedt sofort, sobald er wieder sichtbar ist', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok')]);
+    await renderWidget();
+    await flush();
+    expect(mockListServers).toHaveBeenCalledTimes(1);
+
+    visibility = 'hidden';
+    await advance(120_000);
+    expect(mockListServers).toHaveBeenCalledTimes(1);
+
+    visibility = 'visible';
+    await act(async () => {
+      document.dispatchEvent(new Event('visibilitychange'));
+    });
+    expect(mockListServers).toHaveBeenCalledTimes(2);
+    expect(mockPollServer).not.toHaveBeenCalled();
+  });
+
+  it('nach dem Aushaengen keine weiteren Abrufe', async () => {
+    mockListServers.mockResolvedValue([makeServer('ok')]);
+    const { unmount } = await renderWidget();
+    await flush();
+    unmount();
+
+    await advance(180_000);
+    document.dispatchEvent(new Event('visibilitychange'));
+    expect(mockListServers).toHaveBeenCalledTimes(1);
+    expect(mockPollServer).not.toHaveBeenCalled();
+  });
+
+  it('scheitert ein spaeteres Nachladen, bleibt die letzte Liste stehen', async () => {
+    mockListServers.mockResolvedValueOnce([makeServer('down')]);
+    await renderWidget();
+    await flush();
+    expect(await screen.findByTestId('proxmox-summary')).toHaveTextContent('1 nicht erreichbar');
+
+    mockListServers.mockRejectedValueOnce(new Error('500'));
+    await advance(60_000);
+    await flush();
+
+    expect(mockListServers).toHaveBeenCalledTimes(2);
+    expect(screen.getByTestId('proxmox-summary')).toHaveTextContent('1 nicht erreichbar');
+    expect(screen.queryByText('Die Serverliste konnte nicht geladen werden.')).toBeNull();
+  });
+});
diff --git a/apps/web/src/components/proxmox/proxmox-status.test.ts b/apps/web/src/components/proxmox/proxmox-status.test.ts
index 18dbe31b..92854e8 100644
--- a/apps/web/src/components/proxmox/proxmox-status.test.ts
+++ b/apps/web/src/components/proxmox/proxmox-status.test.ts
@@ -2,6 +2,8 @@ import { describe, expect, it } from 'vitest';
 import type { ProxmoxMetrics, ProxmoxServer, ProxmoxServerStatus } from '@/lib/proxmox-api';
 import {
   formatAge,
+  formatCount,
+  formatPercent,
   HEALTH_ORDER,
   isBackupStale,
   meterLevel,
@@ -307,3 +309,14 @@ describe('formatAge', () => {
     expect(formatAge('2026-09-24T11:57:00.000Z', NOW, 'en')).toBe('3 min. ago');
   });
 });
+
+// quick-260924-i8v: Zahlformat EINMAL, gemeinsam fuer ServerCard und Kachel.
+describe('formatPercent / formatCount', () => {
+  it('deutsches Prozentformat mit geschuetztem Leerzeichen', () => {
+    expect(formatPercent(0.87, 'de')).toMatch(/^87\s%$/);
+  });
+
+  it('deutsches Tausendertrennzeichen', () => {
+    expect(formatCount(12904, 'de')).toBe('12.904');
+  });
+});