diff --git a/public/module-extension-workspace.js b/public/module-extension-workspace.js
new file mode 100644
index 0000000..c7c9003
--- /dev/null
+++ b/public/module-extension-workspace.js
@@ -0,0 +1,193 @@
+(() => {
+  'use strict';
+
+  const moduleRoot = document.getElementById('admin-modules-panel');
+  const extensionRoot = document.getElementById('extensions');
+  if ((!moduleRoot && !extensionRoot) || document.documentElement.dataset.uxModuleExtensionReady === '1') return;
+  document.documentElement.dataset.uxModuleExtensionReady = '1';
+
+  const storageKey = 'vendoo_module_extension_workspace_v1';
+  const state = { moduleFilter: 'all', extensionFilter: 'all' };
+  try { Object.assign(state, JSON.parse(localStorage.getItem(storageKey) || '{}')); } catch {}
+  const persist = () => { try { localStorage.setItem(storageKey, JSON.stringify(state)); } catch {} };
+
+  const el = (tag, className, text) => {
+    const node = document.createElement(tag);
+    if (className) node.className = className;
+    if (text !== undefined) node.textContent = text;
+    return node;
+  };
+
+  function makeFilter(label, value, group, active) {
+    const button = el('button', 'ux-module-filter', label);
+    button.type = 'button';
+    button.dataset.uxModuleFilter = value;
+    button.dataset.uxModuleGroup = group;
+    button.setAttribute('aria-pressed', active ? 'true' : 'false');
+    return button;
+  }
+
+  function text(node) {
+    return String(node?.textContent || '').toLocaleLowerCase('de-DE');
+  }
+
+  function setupModules() {
+    if (!moduleRoot || moduleRoot.dataset.uxWorkspaceReady === '1') return;
+    moduleRoot.dataset.uxWorkspaceReady = '1';
+
+    const summary = moduleRoot.querySelector('#module-manager-summary');
+    const safety = moduleRoot.querySelector('#module-manager-safety');
+    const list = moduleRoot.querySelector('#module-manager-list');
+    const search = moduleRoot.querySelector('#module-manager-search');
+    const file = moduleRoot.querySelector('#module-manager-file');
+    const install = moduleRoot.querySelector('#module-manager-install');
+    const refresh = moduleRoot.querySelector('#module-manager-refresh');
+    if (!list) return;
+
+    const command = el('section', 'ux-module-command');
+    command.setAttribute('aria-label', 'Modulverwaltung');
+    const copy = el('div', 'ux-module-command-copy');
+    copy.append(el('span', 'ux-module-kicker', 'Systemerweiterungen'), el('h3', '', 'Module kontrolliert verwalten'), el('p', '', 'Abhängigkeiten, Vertrauensstatus und Betriebszustand zuerst prüfen. Änderungen bleiben bewusste Einzelaktionen.'));
+    const health = el('div', 'ux-module-health');
+    command.append(copy, health);
+
+    const filters = el('div', 'ux-module-filterbar');
+    [['Alle', 'all'], ['Aktiv', 'active'], ['Deaktiviert', 'disabled'], ['Installiert', 'external'], ['Probleme', 'problems']]
+      .forEach(([label, value]) => filters.append(makeFilter(label, value, 'modules', state.moduleFilter === value)));
+
+    const installDetails = el('details', 'ux-module-install');
+    const installSummary = el('summary');
+    installSummary.append(el('strong', '', 'Modulpaket installieren'), el('small', '', 'Nur geprüfte .vmod-Pakete'));
+    const installBody = el('div', 'ux-module-install-body');
+    if (file) installBody.append(file);
+    if (install) installBody.append(install);
+    installDetails.append(installSummary, installBody);
+
+    const tools = el('div', 'ux-module-tools');
+    if (search) tools.append(search);
+    if (refresh) tools.append(refresh);
+    tools.append(installDetails);
+
+    const anchor = summary || safety || list;
+    anchor.insertAdjacentElement('beforebegin', command);
+    command.insertAdjacentElement('afterend', filters);
+    filters.insertAdjacentElement('afterend', tools);
+
+    function classify(card) {
+      const value = text(card);
+      return {
+        active: value.includes('aktiv') && !value.includes('deaktiviert'),
+        disabled: value.includes('deaktiviert') || card.classList.contains('is-disabled'),
+        external: value.includes('installiert'),
+        problems: value.includes('fehler') || value.includes('ungültig') || value.includes('invalid') || card.classList.contains('is-invalid') || Boolean(card.querySelector('.module-error')),
+      };
+    }
+
+    function refresh() {
+      const cards = [...list.querySelectorAll('.module-card')];
+      const counts = { total: cards.length, active: 0, disabled: 0, external: 0, problems: 0 };
+      cards.forEach(card => {
+        const flags = classify(card);
+        Object.keys(flags).forEach(key => { if (flags[key]) counts[key] += 1; });
+        const visible = state.moduleFilter === 'all' || flags[state.moduleFilter];
+        card.hidden = !visible;
+        card.tabIndex = visible ? 0 : -1;
+      });
+      health.replaceChildren();
+      [['Gesamt', counts.total], ['Aktiv', counts.active], ['Installiert', counts.external], ['Probleme', counts.problems]]
+        .forEach(([label, value]) => {
+          const item = el('div', 'ux-module-health-item');
+          item.append(el('small', '', label), el('strong', '', String(value)));
+          if (label === 'Probleme' && value > 0) item.dataset.tone = 'danger';
+          health.append(item);
+        });
+      filters.querySelectorAll('[data-ux-module-filter]').forEach(button => button.setAttribute('aria-pressed', button.dataset.uxModuleFilter === state.moduleFilter ? 'true' : 'false'));
+    }
+
+    filters.addEventListener('click', event => {
+      const button = event.target.closest('[data-ux-module-filter]');
+      if (!button) return;
+      state.moduleFilter = button.dataset.uxModuleFilter;
+      persist();
+      refresh();
+      list.querySelector('.module-card:not([hidden])')?.focus({ preventScroll: true });
+    });
+
+    list.addEventListener('keydown', event => {
+      const card = event.target.closest('.module-card');
+      if (!card || !['Enter', ' '].includes(event.key)) return;
+      if (event.target.closest('button, a, input, select')) return;
+      event.preventDefault();
+      card.querySelector('.module-card-actions button:not(:disabled), .module-card-actions a')?.focus();
+    });
+
+    const observer = new MutationObserver(() => requestAnimationFrame(refresh));
+    observer.observe(list, { childList: true });
+    refresh();
+    window.addEventListener('beforeunload', () => observer.disconnect(), { once: true });
+  }
+
+  function setupExtensions() {
+    if (!extensionRoot || extensionRoot.dataset.uxWorkspaceReady === '1') return;
+    extensionRoot.dataset.uxWorkspaceReady = '1';
+    const grid = extensionRoot.querySelector('#extensions-grid');
+    const activeBrowser = extensionRoot.querySelector('#extensions-active-browser');
+    const prepare = extensionRoot.querySelector('#extensions-prepare-active');
+    if (!grid) return;
+
+    const board = el('section', 'ux-extension-board');
+    const copy = el('div');
+    copy.append(el('span', 'ux-module-kicker', 'Browser-Verbindungen'), el('h3', '', 'Extensions vorbereiten und prüfen'), el('p', '', 'Vendoo bereitet Pakete und Pfade vor. Die endgültige Browserfreigabe bleibt immer manuell.'));
+    const status = el('div', 'ux-extension-status');
+    board.append(copy, status);
+
+    const filters = el('div', 'ux-module-filterbar ux-extension-filterbar');
+    [['Alle', 'all'], ['Bereit', 'ready'], ['Verbunden', 'connected'], ['Aktion nötig', 'attention']]
+      .forEach(([label, value]) => filters.append(makeFilter(label, value, 'extensions', state.extensionFilter === value)));
+
+    grid.insertAdjacentElement('beforebegin', filters);
+    filters.insertAdjacentElement('beforebegin', board);
+    if (activeBrowser) status.append(activeBrowser);
+    if (prepare) status.append(prepare);
+
+    function classify(card) {
+      const value = text(card);
+      return {
+        connected: value.includes('verbunden') || value.includes('aktiv'),
+        ready: value.includes('bereit') || value.includes('vorbereitet') || value.includes('installiert'),
+        attention: value.includes('nicht') || value.includes('fehler') || value.includes('aktion') || value.includes('installieren'),
+      };
+    }
+
+    function refresh() {
+      const cards = [...grid.children].filter(node => node.nodeType === 1);
+      let connected = 0;
+      let attention = 0;
+      cards.forEach(card => {
+        const flags = classify(card);
+        if (flags.connected) connected += 1;
+        if (flags.attention) attention += 1;
+        card.hidden = !(state.extensionFilter === 'all' || flags[state.extensionFilter]);
+      });
+      board.dataset.connected = String(connected);
+      board.dataset.attention = String(attention);
+      filters.querySelectorAll('[data-ux-module-filter]').forEach(button => button.setAttribute('aria-pressed', button.dataset.uxModuleFilter === state.extensionFilter ? 'true' : 'false'));
+    }
+
+    filters.addEventListener('click', event => {
+      const button = event.target.closest('[data-ux-module-filter]');
+      if (!button) return;
+      state.extensionFilter = button.dataset.uxModuleFilter;
+      persist();
+      refresh();
+    });
+
+    const observer = new MutationObserver(() => requestAnimationFrame(refresh));
+    observer.observe(grid, { childList: true, subtree: true, characterData: true });
+    refresh();
+    window.addEventListener('beforeunload', () => observer.disconnect(), { once: true });
+  }
+
+  setupModules();
+  setupExtensions();
+})();
\ No newline at end of file