diff --git a/public/global-navigation-ux.js b/public/global-navigation-ux.js
new file mode 100644
index 0000000..f1d1ab7
--- /dev/null
+++ b/public/global-navigation-ux.js
@@ -0,0 +1,272 @@
+(() => {
+  'use strict';
+
+  if (document.documentElement.dataset.uxGlobalNavigationReady === '1') return;
+  document.documentElement.dataset.uxGlobalNavigationReady = '1';
+
+  const VIEW_LABELS = {
+    dashboard: ['Übersicht', 'Dashboard', 'Start'],
+    today: ['Aufgaben', 'Heute', 'Tagesarbeitsplatz'],
+    generator: ['Neuer Artikel', 'Artikel erstellen', 'Generator'],
+    history: ['Artikel', 'Listings', 'Artikelübersicht'],
+    'quality-center': ['Qualität', 'Qualitätscenter', 'Prüfen'],
+    publish: ['Veröffentlichen', 'Publish', 'Marktplätze'],
+    inventory: ['Lager', 'Bestand', 'Lagerorte'],
+    templates: ['Vorlagen', 'Templates'],
+    'media-library': ['Medien', 'Bilder', 'Galerie'],
+    'image-factory': ['Bildwerkstatt', 'Bildproduktion'],
+    'flux-studio': ['FLUX Studio', 'ComfyUI', 'AI Bilder'],
+    extensions: ['Erweiterungen', 'Extensions', 'Browser Erweiterung'],
+    settings: ['Einstellungen', 'Verbindungen', 'APIs'],
+    admin: ['Verwaltung', 'Benutzer', 'Admin'],
+    fees: ['Gebühren', 'Kosten'],
+    trash: ['Papierkorb', 'Gelöscht'],
+  };
+
+  const state = {
+    activeView: null,
+    restoring: false,
+    query: '',
+    selectedIndex: 0,
+  };
+
+  const el = (tag, className, text) => {
+    const node = document.createElement(tag);
+    if (className) node.className = className;
+    if (text !== undefined) node.textContent = text;
+    return node;
+  };
+
+  function getActiveView() {
+    return document.querySelector('.sidebar-nav .nav-item.active[data-tab]')?.dataset.tab
+      || document.querySelector('.tab-content.active')?.id
+      || 'dashboard';
+  }
+
+  function getNavItem(view) {
+    return document.querySelector(`.sidebar-nav .nav-item[data-tab="${CSS.escape(view)}"]`);
+  }
+
+  function activateView(view, { replace = false } = {}) {
+    const item = getNavItem(view);
+    if (!item || item.classList.contains('hidden')) return false;
+    state.restoring = true;
+    item.closest('details.ux-nav-section')?.setAttribute('open', '');
+    item.click();
+    requestAnimationFrame(() => {
+      state.activeView = getActiveView();
+      const url = new URL(window.location.href);
+      url.hash = `view=${encodeURIComponent(state.activeView)}`;
+      const method = replace ? 'replaceState' : 'pushState';
+      history[method]({ vendooView: state.activeView }, '', url);
+      state.restoring = false;
+      updateHistoryButtons();
+    });
+    return true;
+  }
+
+  function ensureInitialHistoryState() {
+    const hashView = new URLSearchParams(window.location.hash.replace(/^#/, '')).get('view');
+    const initial = hashView && getNavItem(hashView) ? hashView : getActiveView();
+    const url = new URL(window.location.href);
+    url.hash = `view=${encodeURIComponent(initial)}`;
+    history.replaceState({ vendooView: initial }, '', url);
+    state.activeView = initial;
+    if (initial !== getActiveView()) activateView(initial, { replace: true });
+  }
+
+  function updateHistoryButtons() {
+    const back = document.getElementById('ux-nav-back');
+    const forward = document.getElementById('ux-nav-forward');
+    if (back) back.disabled = history.length <= 1;
+    if (forward) forward.disabled = false;
+  }
+
+  function createHistoryControls() {
+    const context = document.querySelector('.topbar-context');
+    if (!context || document.getElementById('ux-nav-history')) return;
+    const controls = el('div', 'ux-nav-history');
+    controls.id = 'ux-nav-history';
+    controls.setAttribute('aria-label', 'Navigationsverlauf');
+    const back = el('button', 'ux-nav-history-button');
+    back.id = 'ux-nav-back';
+    back.type = 'button';
+    back.title = 'Zurück (Alt + Pfeil links)';
+    back.setAttribute('aria-label', 'Zurück');
+    back.textContent = '←';
+    const forward = el('button', 'ux-nav-history-button');
+    forward.id = 'ux-nav-forward';
+    forward.type = 'button';
+    forward.title = 'Vorwärts (Alt + Pfeil rechts)';
+    forward.setAttribute('aria-label', 'Vorwärts');
+    forward.textContent = '→';
+    back.addEventListener('click', () => history.back());
+    forward.addEventListener('click', () => history.forward());
+    controls.append(back, forward);
+    context.querySelector('.topbar-heading')?.before(controls);
+    updateHistoryButtons();
+  }
+
+  function collectCommands() {
+    return Object.entries(VIEW_LABELS).map(([view, labels]) => ({
+      id: `view:${view}`,
+      view,
+      title: labels[0],
+      keywords: labels.join(' ').toLocaleLowerCase('de-DE'),
+      group: view === 'settings' || view === 'admin' || view === 'extensions' ? 'System' : 'Navigation',
+    })).filter(command => {
+      const item = getNavItem(command.view);
+      return item && !item.classList.contains('hidden');
+    });
+  }
+
+  function createDialog() {
+    if (document.getElementById('ux-global-search')) return document.getElementById('ux-global-search');
+    const dialog = el('div', 'ux-global-search hidden');
+    dialog.id = 'ux-global-search';
+    dialog.setAttribute('role', 'dialog');
+    dialog.setAttribute('aria-modal', 'true');
+    dialog.setAttribute('aria-labelledby', 'ux-global-search-title');
+    const panel = el('section', 'ux-global-search-panel');
+    const header = el('header', 'ux-global-search-header');
+    const title = el('h2', '', 'Suchen und öffnen');
+    title.id = 'ux-global-search-title';
+    const close = el('button', 'ux-global-search-close', '×');
+    close.type = 'button';
+    close.setAttribute('aria-label', 'Suche schließen');
+    const inputWrap = el('div', 'ux-global-search-input-wrap');
+    const input = el('input', 'ux-global-search-input');
+    input.id = 'ux-global-search-input';
+    input.type = 'search';
+    input.placeholder = 'Seite, Bereich oder Einstellung suchen …';
+    input.autocomplete = 'off';
+    input.setAttribute('aria-controls', 'ux-global-search-results');
+    const shortcut = el('kbd', '', 'Esc');
+    inputWrap.append(input, shortcut);
+    const results = el('div', 'ux-global-search-results');
+    results.id = 'ux-global-search-results';
+    results.setAttribute('role', 'listbox');
+    const footer = el('footer', 'ux-global-search-footer');
+    footer.textContent = '↑↓ auswählen · Enter öffnen · Esc schließen';
+    header.append(title, close);
+    panel.append(header, inputWrap, results, footer);
+    dialog.append(panel);
+    document.body.append(dialog);
+
+    const closeDialog = () => {
+      dialog.classList.add('hidden');
+      document.body.classList.remove('ux-search-open');
+      state.query = '';
+      state.selectedIndex = 0;
+      input.value = '';
+    };
+
+    const executeSelected = () => {
+      const selected = results.querySelector('[aria-selected="true"]');
+      const view = selected?.dataset.view;
+      if (!view) return;
+      closeDialog();
+      activateView(view);
+    };
+
+    const render = () => {
+      const query = input.value.trim().toLocaleLowerCase('de-DE');
+      state.query = query;
+      const commands = collectCommands().filter(command => !query || `${command.title} ${command.keywords} ${command.group}`.toLocaleLowerCase('de-DE').includes(query));
+      state.selectedIndex = Math.min(state.selectedIndex, Math.max(0, commands.length - 1));
+      results.replaceChildren();
+      if (!commands.length) {
+        const empty = el('div', 'ux-global-search-empty');
+        empty.append(el('strong', '', 'Keine passende Seite gefunden'), el('span', '', 'Versuche einen allgemeineren Begriff. Produktive Aktionen werden hier bewusst nicht automatisch ausgeführt.'));
+        results.append(empty);
+        return;
+      }
+      commands.forEach((command, index) => {
+        const button = el('button', 'ux-global-search-result');
+        button.type = 'button';
+        button.dataset.view = command.view;
+        button.setAttribute('role', 'option');
+        button.setAttribute('aria-selected', index === state.selectedIndex ? 'true' : 'false');
+        const copy = el('span', 'ux-global-search-result-copy');
+        copy.append(el('strong', '', command.title), el('small', '', command.group));
+        button.append(copy, el('span', 'ux-global-search-result-action', 'Öffnen'));
+        button.addEventListener('mouseenter', () => { state.selectedIndex = index; render(); });
+        button.addEventListener('click', executeSelected);
+        results.append(button);
+      });
+    };
+
+    input.addEventListener('input', () => { state.selectedIndex = 0; render(); });
+    input.addEventListener('keydown', event => {
+      const count = results.querySelectorAll('[data-view]').length;
+      if (event.key === 'ArrowDown' && count) { event.preventDefault(); state.selectedIndex = (state.selectedIndex + 1) % count; render(); }
+      if (event.key === 'ArrowUp' && count) { event.preventDefault(); state.selectedIndex = (state.selectedIndex - 1 + count) % count; render(); }
+      if (event.key === 'Enter') { event.preventDefault(); executeSelected(); }
+      if (event.key === 'Escape') closeDialog();
+    });
+    close.addEventListener('click', closeDialog);
+    dialog.addEventListener('mousedown', event => { if (event.target === dialog) closeDialog(); });
+    dialog._open = () => {
+      dialog.classList.remove('hidden');
+      document.body.classList.add('ux-search-open');
+      state.selectedIndex = 0;
+      render();
+      requestAnimationFrame(() => input.focus());
+    };
+    dialog._close = closeDialog;
+    return dialog;
+  }
+
+  function bindSearch() {
+    const dialog = createDialog();
+    document.getElementById('topbar-search-btn')?.addEventListener('click', () => dialog._open());
+    document.addEventListener('keydown', event => {
+      const modifier = /Mac|iPhone|iPad/.test(navigator.platform) ? event.metaKey : event.ctrlKey;
+      if (modifier && event.key.toLocaleLowerCase('de-DE') === 'k') {
+        event.preventDefault();
+        dialog.classList.contains('hidden') ? dialog._open() : dialog._close();
+      }
+      if (event.altKey && event.key === 'ArrowLeft') { event.preventDefault(); history.back(); }
+      if (event.altKey && event.key === 'ArrowRight') { event.preventDefault(); history.forward(); }
+      if (event.key === 'Escape' && !dialog.classList.contains('hidden')) dialog._close();
+    });
+  }
+
+  function observeNavigation() {
+    const nav = document.querySelector('.sidebar-nav');
+    if (!nav) return;
+    const observer = new MutationObserver(() => {
+      const next = getActiveView();
+      if (!next || next === state.activeView || state.restoring) return;
+      state.activeView = next;
+      const url = new URL(window.location.href);
+      url.hash = `view=${encodeURIComponent(next)}`;
+      history.pushState({ vendooView: next }, '', url);
+      updateHistoryButtons();
+    });
+    nav.querySelectorAll('.nav-item[data-tab]').forEach(item => observer.observe(item, { attributes: true, attributeFilter: ['class'] }));
+    window.addEventListener('beforeunload', () => observer.disconnect(), { once: true });
+  }
+
+  window.addEventListener('popstate', event => {
+    const view = event.state?.vendooView || new URLSearchParams(window.location.hash.replace(/^#/, '')).get('view');
+    if (!view || !getNavItem(view)) return;
+    state.restoring = true;
+    getNavItem(view).click();
+    requestAnimationFrame(() => {
+      state.activeView = getActiveView();
+      state.restoring = false;
+      updateHistoryButtons();
+    });
+  });
+
+  function initialize() {
+    createHistoryControls();
+    ensureInitialHistoryState();
+    bindSearch();
+    observeNavigation();
+  }
+
+  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', initialize, { once: true });
+  else initialize();
+})();
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