feat(ui): 11-point UI overhaul — tabs, transfers, settings, uploads

Hub/UI:
- Icon-only group tabs (chat, files, settings) with per-group default tab
- Transfer widget: filename becomes a clickable link to open completed downloads
- Pulse animation on transfer icon (pale→dark green) while active
- Download button feedback in FilePreview (spinner, auto-reset)
- Group mute toggle persists across navigation
- Login page autofocus, chat refocus after send
- Theme toggle closes menu, status badge and duplicate connecting removed
- Create-folder restricted to operators, download-path note removed
- User preferences API (CRUD) with Alembic migration
- Profile: email display/edit via PATCH /v1/users/me
- Settings: "Defaults" section for default tab selector
- All 10 locale files updated

Node:
- upload_dir in node.toml: separate filesystem path for uploads
- Root.direct flag: uploads land at root path, no subdirectory
- CLI --upload-dir flag on `group add`
- Admin UI accepts upload_dir

Client (Electron):
- shell.openPath bridge for opening completed downloads
- platform.js passes open callback from native save

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 235 insertions, 56 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/app.js b/packages/meshbay-hub/src/meshbay_hub/static/app.js
index 2e3c422..816c0ab 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/app.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/app.js
@@ -398,6 +398,11 @@ const ICON_PATHS = {
   check:    ['M4.5 12.5l5 5 10-11'],
   chevron:  ['M6 9.5l6 6 6-6'],
   close:    ['M6 6l12 12M18 6L6 18'],
+  chat:     ['M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z'],
+  folder:   ['M3.5 6.6a1 1 0 0 1 1-1h4.2l2 2.4h7.8a1 1 0 0 1 1 1v9.4a1 1 0 0 1-1 1h-14a1 1 0 0 1-1-1z'],
+  'bell-off': ['M18 9a6 6 0 0 0-12 0c0 6-2.5 7.5-2.5 7.5h17S18 15 18 9',
+               'M10.3 20a2 2 0 0 0 3.4 0',
+               'M4 4l16 16'],
 };
 
 // The M of the wordmark is a picture; the rest is text. Resolved from this
@@ -472,6 +477,7 @@ function UserMenu({ user, theme, onThemeChange, onLogout }) {
           </button>
           <button class="user-menu-item" onClick=${() => {
             onThemeChange(resolved === 'dark' ? 'light' : 'dark');
+            setOpen(false);
           }}>
             <${Icon} name=${resolved === 'dark' ? 'sun' : 'moon'} cls="umi-icon" />
             ${' '}${resolved === 'dark' ? t('usermenu.theme_light') : t('usermenu.theme_dark')}
@@ -532,7 +538,10 @@ function TransferWidget() {
                 <span class="transfer-kind">
                   <${Icon} name=${it.kind === 'upload' ? 'upload' : 'download'} />
                 </span>
-                <span class="transfer-name" title=${it.name}>${it.name}</span>
+                ${it.canOpen
+                  ? html`<a class="transfer-name" href="#" title=${it.name}
+                      onClick=${(e) => { e.preventDefault(); transfers.open(it.id); }}>${it.name}</a>`
+                  : html`<span class="transfer-name" title=${it.name}>${it.name}</span>`}
                 ${it.status === 'running' && html`
                   <button class="transfer-cancel" title=${t('transfers.cancel')}
                     onClick=${() => transfers.cancel(it.id)}>
@@ -738,7 +747,7 @@ function LoginPage() {
         <form onSubmit=${onSubmit}>
           <input type="text" placeholder="${t('login.username')}" value=${username}
                  onInput=${e => setUsername(e.target.value)}
-                 autocomplete="username" required />
+                 autocomplete="username" required autofocus />
           <input type="password" placeholder="${t('login.password')}" value=${password}
                  onInput=${e => setPassword(e.target.value)}
                  autocomplete="current-password" required />
@@ -1284,8 +1293,8 @@ async function pipelinedDownload(transport, gekKey, fileId, totalChunks, onChunk
   return results;
 }
 
-function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
-                    onJoined, onGroupUpdated, onPresence, onLeft }) {
+function GroupPage({ groupId, group, token, username, userId, userPrefs,
+                    onRefreshAuth, onJoined, onGroupUpdated, onPresence, onLeft }) {
   const [status, setStatus] = useState('idle');
   const [entries, setEntries] = useState([]);
 
@@ -1301,7 +1310,23 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
   const [currentPath, setCurrentPath] = useState('');
   const [videoEntry, setVideoEntry] = useState(null);
   const [previewEntry, setPreviewEntry] = useState(null);
-  const [tab, setTab] = useState('chat');
+  const defaultTab = (userPrefs && (userPrefs[`default_tab:${groupId}`] || userPrefs['default_tab'])) || 'chat';
+  const [tab, setTab] = useState(defaultTab);
+  const [groupMuted, setGroupMuted] = useState(() => !!(group && group.muted));
+
+  const toggleGroupMute = useCallback(async () => {
+    const next = !groupMuted;
+    setGroupMuted(next);
+    try {
+      await hubFetch(`/v1/groups/${groupId}/mute`, {
+        method: 'POST', token, body: { muted: next },
+      });
+      if (onGroupUpdated) onGroupUpdated(groupId, { muted: next });
+    } catch (err) {
+      setGroupMuted(!next);
+    }
+  }, [groupMuted, groupId, token, onGroupUpdated]);
+
   // Directories are not index entries, so a new empty one needs a nudge
   // to appear in the breadcrumb listing.
   const [nodeDirs, setNodeDirs] = useState([]);
@@ -1520,9 +1545,13 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
     const target = await _openDownloadTarget(entry.name, entry.size);
     if (target === false) return;          // the picker was dismissed
 
+    const openRef = { url: null };
     transfers.start({
       kind: 'download', name: (target && target.name) || entry.name,
-      total: entry.size, transport, open: target && target.open,
+      total: entry.size, transport,
+      open: target
+        ? (target.open || null)
+        : () => { if (openRef.url) window.open(openRef.url, '_blank'); },
       run: async ({ signal, onProgress }) => {
         const totalChunks = Math.ceil(entry.size / CHUNK_SIZE);
         let done = 0;
@@ -1540,7 +1569,9 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
         } else {
           const chunks = await pipelinedDownload(
             transport, gek, entry.id, totalChunks, onChunk, null, signal);
-          _saveBlob(new Blob(chunks), entry.name);
+          const blob = new Blob(chunks);
+          _saveBlob(blob, entry.name);
+          openRef.url = URL.createObjectURL(blob);
         }
       },
     });
@@ -1642,10 +1673,14 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
       return;
     }
     const gek = gekRef.current;
+    const zipOpenRef = { url: null };
 
     transfers.start({
       kind: 'download', name: (target && target.name) || suggested,
-      total: totalBytes, transport, open: target && target.open,
+      total: totalBytes, transport,
+      open: target
+        ? (target.open || null)
+        : () => { if (zipOpenRef.url) window.open(zipOpenRef.url, '_blank'); },
       run: async ({ signal, onProgress }) => {
         const writable = target ? target.writable : null;
         const parts = writable ? null : [];
@@ -1671,7 +1706,11 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
           }
           await zip.finish();
           if (writable) await writable.close();
-          else _saveBlob(new Blob(parts, { type: 'application/zip' }), suggested);
+          else {
+            const blob = new Blob(parts, { type: 'application/zip' });
+            _saveBlob(blob, suggested);
+            zipOpenRef.url = URL.createObjectURL(blob);
+          }
         } catch (err) {
           if (writable) await writable.abort().catch(() => {});
           throw err;
@@ -1773,7 +1812,7 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
   // set of roots, which is the operator's configuration and not a directory on
   // anyone's disk. The node refuses it, so offering it would only produce an
   // error nobody can act on.
-  const canCreateDir = Boolean(currentPath);
+  const canCreateDir = Boolean(currentPath) && isNodeAdmin;
 
   const baseLabel = {
     idle: t('status.idle'),
@@ -1786,9 +1825,6 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
   }[status] || status;
   const statusLabel = baseLabel;
 
-  const statusClass = status === 'connected' ? 'status-ok'
-    : status === 'error' || status === 'offline' ? 'status-err' : 'status-busy';
-
   const breadcrumbs = currentPath ? currentPath.split('/') : [];
 
   // Selection is keyed globally — file ids, and 'dir:' plus a full path — so
@@ -1923,11 +1959,12 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
               `}
             `}
         </div>
-        <span class="status-badge ${statusClass}">
-          ${(status === 'discovering' || status === 'connecting' || status === 'fetching')
-            && html`<span class="spinner"></span>${' '}`}
-          ${statusLabel}
-        </span>
+        ${group && html`
+          <button class="group-mute-btn" onClick=${toggleGroupMute}
+            title=${groupMuted ? t('group.unmute') : t('group.mute')}>
+            <${Icon} name=${groupMuted ? 'bell-off' : 'bell'} />
+          </button>
+        `}
       </div>
       ${error && html`<div class="error-msg" style="margin-bottom:12px">${error}</div>`}
       ${needsDevice && html`
@@ -1969,15 +2006,18 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
             chat still need the node and say so. */ group && html`
         <div class="group-tabs">
           <button class="group-tab ${tab === 'chat' ? 'active' : ''}"
-            onClick=${() => setTab('chat')}>${t('group.tab_chat')}</button>
+            onClick=${() => setTab('chat')} title=${t('group.tab_chat')}>
+            <${Icon} name="chat" cls="tab-icon" /></button>
           <button class="group-tab ${tab === 'files' ? 'active' : ''}"
-            onClick=${() => setTab('files')}>${t('group.tab_files')}</button>
+            onClick=${() => setTab('files')} title=${t('group.tab_files')}>
+            <${Icon} name="folder" cls="tab-icon" /></button>
           <button class="group-tab ${tab === 'settings' ? 'active' : ''}"
-            onClick=${() => setTab('settings')}>${t('group.tab_settings')}</button>
+            onClick=${() => setTab('settings')} title=${t('group.tab_settings')}>
+            <${Icon} name="gear" cls="tab-icon" /></button>
         </div>
 
         ${tab === 'files' && status !== 'connected' && html`
-          <p class="page-message"><span class="spinner"></span>${' '}${t('status.connecting')}</p>
+          <p class="page-message"><span class="spinner"></span>${' '}${t('status.connecting_short')}</p>
         `}
 
         ${tab === 'files' && status === 'connected' && html`
@@ -2114,7 +2154,7 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
             }} />
         `}
         ${tab === 'chat' && status !== 'connected' && html`
-          <p class="page-message"><span class="spinner"></span>${' '}${t('status.connecting')}</p>
+          <p class="page-message"><span class="spinner"></span>${' '}${t('status.connecting_short')}</p>
         `}
 
         ${tab === 'settings' && html`
@@ -2134,8 +2174,8 @@ function GroupPage({ groupId, group, token, username, userId, onRefreshAuth,
           ${' '}${t('group.offline_hint')}
         </p>
       `}
-      ${(status === 'discovering' || status === 'connecting' || status === 'fetching') && html`
-        <p class="page-message">${statusLabel}</p>
+      ${(status === 'discovering' || status === 'connecting' || status === 'fetching') && !group && html`
+        <p class="page-message"><span class="spinner"></span>${' '}${t('status.connecting_short')}</p>
       `}
       ${previewEntry && html`
         <${FilePreview}
@@ -2167,6 +2207,7 @@ function FilePreview({ entry, transportRef, gekRef, onClose, onDownload }) {
   const [progress, setProgress] = useState(0);
   const [content, setContent] = useState(null);
   const [error, setError] = useState('');
+  const [downloading, setDownloading] = useState(false);
   const blobUrlRef = useRef(null);
 
   useEffect(() => {
@@ -2239,9 +2280,18 @@ function FilePreview({ entry, transportRef, gekRef, onClose, onDownload }) {
       <div class="video-top-bar">
         <span class="video-title">${entry.name} (${formatSize(entry.size)})</span>
         ${onDownload && html`
-          <button class="video-close" onClick=${onDownload}
-                  title="${t('group.download')}">
-            <${Icon} name="download" /></button>
+          <button class="video-close ${downloading ? 'dl-active' : ''}"
+            onClick=${() => {
+              if (!downloading) {
+                setDownloading(true);
+                onDownload();
+                setTimeout(() => setDownloading(false), 1500);
+              }
+            }}
+            title="${t('group.download')}" disabled=${downloading}>
+            ${downloading
+              ? html`<span class="spinner"></span>`
+              : html`<${Icon} name="download" />`}</button>
         `}
         <button class="video-close" onClick=${onClose} title="${t('video.close')}">
           <${Icon} name="close" /></button>
@@ -2297,7 +2347,8 @@ function _b64ToU8(b64) {
  */
 function GroupSettingsPanel({ groupId, group, token, transportRef, gekRef,
                              isNodeAdmin, userId, operatorPaired, connected,
-                             memberUpload, onMemberUpload, onPaired, onLeft }) {
+                             memberUpload, onMemberUpload,
+                             onPaired, onLeft }) {
   const [members, setMembers] = useState([]);
   const [adminId, setAdminId] = useState('');
   const [loading, setLoading] = useState(true);
@@ -2833,6 +2884,7 @@ function ChatPanel({ transportRef, username, entries, gekRef, onRefreshIndex,
   const [attaching, setAttaching] = useState(false);
   const listRef = useRef(null);
   const panelRef = useRef(null);
+  const inputRef = useRef(null);
   const loadedRef = useRef(false);
   // Set just before older messages are prepended; read once, after the DOM has
   // them but before the browser paints.
@@ -2998,6 +3050,7 @@ function ChatPanel({ transportRef, username, entries, gekRef, onRefreshIndex,
       setInput(text);
     } finally {
       setSending(false);
+      setTimeout(() => { if (inputRef.current) inputRef.current.focus(); });
     }
   }, [input, username, jumpToBottom]);
 
@@ -3126,7 +3179,7 @@ function ChatPanel({ transportRef, username, entries, gekRef, onRefreshIndex,
           <input type="file" style="display:none" onChange=${attachFile} disabled=${attaching} />
         </label>
         `}
-        <textarea class="chat-input" rows="1"
+        <textarea class="chat-input" rows="1" ref=${inputRef}
           placeholder="${t('chat.placeholder')}"
           value=${input}
           onInput=${e => setInput(e.target.value)}
@@ -3224,6 +3277,7 @@ function purgeUnscopedResumePositions() {
 purgeUnscopedResumePositions();
 
 function VideoPlayer({ entry, transportRef, gekRef, onClose, onDownload }) {
+  const [dlBusy, setDlBusy] = useState(false);
   const [phase, setPhase] = useState('loading');
   const [error, setError] = useState('');
   const videoRef = useRef(null);
@@ -3855,9 +3909,18 @@ function VideoPlayer({ entry, transportRef, gekRef, onClose, onDownload }) {
       <div class="video-top-bar">
         <span class="video-title">${entry.name} (${formatSize(entry.size)})</span>
         ${onDownload && html`
-          <button class="video-close" onClick=${onDownload}
-                  title="${t('group.download')}">
-            <${Icon} name="download" /></button>
+          <button class="video-close ${dlBusy ? 'dl-active' : ''}" disabled=${dlBusy}
+            onClick=${() => {
+              if (!dlBusy) {
+                setDlBusy(true);
+                onDownload();
+                setTimeout(() => setDlBusy(false), 1500);
+              }
+            }}
+            title="${t('group.download')}">
+            ${dlBusy
+              ? html`<span class="spinner"></span>`
+              : html`<${Icon} name="download" />`}</button>
         `}
         <button class="video-close" onClick=${onClose} title="${t('video.close')}">
           <${Icon} name="close" /></button>
@@ -4019,6 +4082,11 @@ function ProfilePage({ user, onLogout }) {
   const [currentNodeKey, setCurrentNodeKey] = useState(null);
   const [nodeKeyStatus, setNodeKeyStatus] = useState('');
   const [nodeKeyLoading, setNodeKeyLoading] = useState(false);
+  const [email, setEmail] = useState('');
+  const [emailDraft, setEmailDraft] = useState('');
+  const [emailEditing, setEmailEditing] = useState(false);
+  const [emailSaving, setEmailSaving] = useState(false);
+  const [emailStatus, setEmailStatus] = useState('');
   const [pinCount, setPinCount] = useState(
     () => (window.MeshBayTransport?.pinnedNodeCount?.() ?? 0));
   const [delOpen, setDelOpen] = useState(false);
@@ -4031,8 +4099,6 @@ function ProfilePage({ user, onLogout }) {
     setDeleting(true);
     setDelError('');
     try {
-      // The passphrase is re-checked by the hub, not merely by this form: an
-      // open session is not consent to something irreversible.
       const authKey = await window.MeshBayKeys.deriveAuthKey(delPass, user.username);
       await hubFetch('/v1/users/me', {
         method: 'DELETE', token: user.token, body: { auth_key: authKey },
@@ -4045,14 +4111,17 @@ function ProfilePage({ user, onLogout }) {
     }
   }, [delPass, user]);
 
-  // 11.5.8: node identity pins are refused strictly on change, so users need a
-  // deliberate way to accept a legitimate rotation (operator reinstalled a node).
   const clearPins = useCallback(() => {
     window.MeshBayTransport?.clearNodePin?.();
     setPinCount(window.MeshBayTransport?.pinnedNodeCount?.() ?? 0);
   }, []);
 
   useEffect(() => {
+    hubFetch('/v1/users/me', { token: user.token })
+      .then(data => {
+        if (data.email) { setEmail(data.email); setEmailDraft(data.email); }
+      })
+      .catch(() => {});
     hubFetch(`/v1/users/${user.username}/pubkeys`, { token: user.token })
       .then(data => {
         if (data.pk_node_ed25519) setCurrentNodeKey(data.pk_node_ed25519);
@@ -4060,6 +4129,26 @@ function ProfilePage({ user, onLogout }) {
       .catch(() => {});
   }, [user.username, user.token]);
 
+  const saveEmail = useCallback(async () => {
+    const val = emailDraft.trim();
+    if (!val || val === email) { setEmailEditing(false); return; }
+    setEmailSaving(true);
+    setEmailStatus('');
+    try {
+      await hubFetch('/v1/users/me', {
+        method: 'PATCH', token: user.token, body: { email: val },
+      });
+      setEmail(val);
+      setEmailEditing(false);
+      setEmailStatus(t('settings.email_saved'));
+      setTimeout(() => setEmailStatus(''), 3000);
+    } catch (e) {
+      setEmailStatus(e.message);
+    } finally {
+      setEmailSaving(false);
+    }
+  }, [emailDraft, email, user.token]);
+
   const submitNodeKey = useCallback(async () => {
     const key = nodeKey.trim();
     if (!key) return;
@@ -4091,9 +4180,27 @@ function ProfilePage({ user, onLogout }) {
           <span class="settings-value">${user.username}</span>
         </div>
         <div class="settings-row">
-          <span class="settings-label">${t('settings.role')}</span>
-          <span class="settings-value">${user.role || 'user'}</span>
+          <span class="settings-label">${t('settings.email')}</span>
+          ${emailEditing
+            ? html`<span style="display:flex;gap:8px;align-items:center">
+                <input type="email" value=${emailDraft}
+                  onInput=${e => setEmailDraft(e.target.value)}
+                  onKeyDown=${e => e.key === 'Enter' && saveEmail()}
+                  style="font-size:0.9em;padding:4px 8px;border:1px solid var(--border);border-radius:4px" />
+                <button class="admin-btn" onClick=${saveEmail}
+                  disabled=${emailSaving}>${t('settings.email_save')}</button>
+                <button class="btn-secondary" onClick=${() => {
+                  setEmailEditing(false); setEmailDraft(email);
+                }}>${t('settings.cancel')}</button>
+              </span>`
+            : html`<span style="display:flex;gap:8px;align-items:center">
+                <span class="settings-value">${email || '—'}</span>
+                <button class="link-btn" onClick=${() => setEmailEditing(true)}>
+                  <${Icon} name="pencil" /></button>
+              </span>`
+          }
         </div>
+        ${emailStatus && html`<p class="settings-hint" style="margin-top:4px">${emailStatus}</p>`}
       </div>
 
       <div class="settings-section">
@@ -4164,11 +4271,13 @@ function ProfilePage({ user, onLogout }) {
   `;
 }
 
-function SettingsPage({ user, theme, onThemeChange, groups }) {
+function SettingsPage({ user, theme, onThemeChange, groups, onPrefsChange }) {
   const [locale, setLoc] = useState(getLocale);
-  // Comes from the hub with the group list, so it is the same on every device.
   const [muted, setMuted] = useState(
     () => Object.fromEntries((groups || []).map(g => [g.id, !!g.muted])));
+  const [globalMute, setGlobalMute] = useState(false);
+  const [defaultTab, setDefaultTab] = useState('chat');
+
   const onLocaleChange = useCallback((e) => {
     const code = e.target.value;
     setLocale(code);
@@ -4180,10 +4289,30 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
     onThemeChange(e.target.value);
   }, [onThemeChange]);
 
+  useEffect(() => {
+    hubFetch('/v1/users/me/preferences', { token: user.token })
+      .then(prefs => {
+        if (prefs.notifications_disabled === 'true') setGlobalMute(true);
+        if (prefs.default_tab) setDefaultTab(prefs.default_tab);
+      })
+      .catch(() => {});
+  }, [user.token]);
+
+  const toggleGlobalMute = useCallback(async () => {
+    const next = !globalMute;
+    setGlobalMute(next);
+    try {
+      await hubFetch('/v1/users/me/preferences/notifications_disabled', {
+        method: 'PUT', token: user.token,
+        body: { value: next ? 'true' : 'false' },
+      });
+      if (onPrefsChange) onPrefsChange({ notifications_disabled: next });
+    } catch (err) {
+      setGlobalMute(!next);
+    }
+  }, [globalMute, user.token, onPrefsChange]);
+
   const toggleMute = useCallback(async (gid) => {
-    // Server-side: this used to write to localStorage, which nothing read, so
-    // muting a group had no effect on anything. The hub now declines to create
-    // the notification at all.
     const next = !muted[gid];
     setMuted(prev => ({ ...prev, [gid]: next }));
     try {
@@ -4195,6 +4324,18 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
     }
   }, [muted, user.token]);
 
+  const changeDefaultTab = useCallback(async (e) => {
+    const val = e.target.value;
+    setDefaultTab(val);
+    try {
+      await hubFetch('/v1/users/me/preferences/default_tab', {
+        method: 'PUT', token: user.token,
+        body: { value: val },
+      });
+      if (onPrefsChange) onPrefsChange({ default_tab: val });
+    } catch { setDefaultTab(defaultTab); }
+  }, [defaultTab, user.token, onPrefsChange]);
+
   const [dlMode, setDlMode] = useState(() => downloads.getMode());
   const [dlDir, setDlDir] = useState(null);
   const [dlError, setDlError] = useState('');
@@ -4250,9 +4391,7 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
 
       <div class="settings-section">
         <h3 class="settings-heading">${t('settings.downloads')}</h3>
-        ${!(downloads.SUPPORTED || platform.folder.available)
-          ? html`<p class="settings-hint">${t('settings.dl_unsupported')}</p>`
-          : html`
+        ${(downloads.SUPPORTED || platform.folder.available) && html`
             <label class="settings-choice">
               <input type="radio" name="dlmode" checked=${dlMode === 'auto'}
                 onChange=${() => { downloads.setMode('auto'); setDlMode('auto'); }} />
@@ -4289,8 +4428,7 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
               </span>
             </div>
             ${dlError && html`<p class="error-msg">${dlError}</p>`}
-            <p class="settings-hint">${t('settings.dl_path_note')}</p>
-          `}
+        `}
       </div>
 
       <div class="settings-section">
@@ -4313,9 +4451,17 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
         </div>
       </div>
 
-      ${groups.length > 0 && html`
-        <div class="settings-section">
-          <h3 class="settings-heading">${t('settings.groups')}</h3>
+      <div class="settings-section">
+        <h3 class="settings-heading">${t('settings.groups')}</h3>
+        <div class="settings-row">
+          <span class="settings-label">${t('settings.notif_global_disable')}</span>
+          <label class="settings-value" style="cursor:pointer">
+            <input type="checkbox" checked=${globalMute}
+              onChange=${toggleGlobalMute} />
+          </label>
+        </div>
+        ${!globalMute && html`
+          <p class="settings-hint" style="margin-bottom:8px">${t('settings.notif_global_hint')}</p>
           ${groups.map(g => html`
             <div class="settings-row" key=${g.id}>
               <span class="settings-label">${g.name}</span>
@@ -4326,8 +4472,22 @@ function SettingsPage({ user, theme, onThemeChange, groups }) {
               </label>
             </div>
           `)}
+        `}
+      </div>
+
+      <div class="settings-section">
+        <h3 class="settings-heading">${t('settings.defaults')}</h3>
+        <div class="settings-row">
+          <span class="settings-label">${t('settings.default_tab')}</span>
+          <select class="settings-select" value=${defaultTab}
+            onChange=${changeDefaultTab}>
+            <option value="chat">${t('group.tab_chat')}</option>
+            <option value="files">${t('group.tab_files')}</option>
+            <option value="settings">${t('group.tab_settings')}</option>
+          </select>
         </div>
-      `}
+        <p class="settings-hint">${t('settings.default_tab_hint')}</p>
+      </div>
 
       ${platform.isNative && html`
         <div class="settings-section">
@@ -4792,6 +4952,8 @@ function App() {
   const [menuOpen, setMenuOpen] = useState(false);
   const [notifications, setNotifications] = useState([]);
   const [unreadCount, setUnreadCount] = useState(0);
+  const [notifDisabled, setNotifDisabled] = useState(false);
+  const [userPrefs, setUserPrefs] = useState({});
 
   const resolved = resolveTheme(theme);
 
@@ -4828,20 +4990,28 @@ function App() {
   }, [theme, resolved]);
 
   const fetchNotifications = useCallback(() => {
-    if (!user) return;
+    if (!user || notifDisabled) {
+      setNotifications([]); setUnreadCount(0); return;
+    }
     hubFetch('/v1/notifications?limit=20', { token: user.token })
       .then(data => {
         setNotifications(data.notifications || []);
         setUnreadCount(data.unread_count || 0);
       })
       .catch(() => {});
-  }, [user]);
+  }, [user, notifDisabled]);
 
   useEffect(() => {
     if (!user) { setGroups([]); setNotifications([]); setUnreadCount(0); return; }
     hubFetch('/v1/groups/mine', { token: user.token })
       .then(data => setGroups(data.groups || []))
       .catch(() => setGroups([]));
+    hubFetch('/v1/users/me/preferences', { token: user.token })
+      .then(prefs => {
+        setUserPrefs(prefs || {});
+        if (prefs.notifications_disabled === 'true') setNotifDisabled(true);
+      })
+      .catch(() => {});
     fetchNotifications();
   }, [user]);
 
@@ -5062,6 +5232,7 @@ function App() {
     page = html`<${GroupPage}
       groupId=${groupId} group=${group} token=${user.token}
       username=${user.username} userId=${user.userId}
+      userPrefs=${userPrefs}
       onRefreshAuth=${refreshAuth} onJoined=${dismissGroupNotifications}
       onGroupUpdated=${updateGroup} onPresence=${notePresence}
       onLeft=${handleLeftGroup} />`;
@@ -5072,7 +5243,15 @@ function App() {
           onMarkRead=${markRead} onPurge=${purgeNotifications} />`;
   } else if (route === '/settings') {
     page = html`<${SettingsPage} user=${user} theme=${theme}
-      onThemeChange=${setTheme} groups=${groups} />`;
+      onThemeChange=${setTheme} groups=${groups}
+      onPrefsChange=${(p) => {
+        if ('notifications_disabled' in p) {
+          setNotifDisabled(p.notifications_disabled);
+          if (p.notifications_disabled) { setNotifications([]); setUnreadCount(0); }
+          else fetchNotifications();
+        }
+        setUserPrefs(prev => ({ ...prev, ...p }));
+      }} />`;
   } else if (route === '/profile') {
     page = html`<${ProfilePage} user=${user} onLogout=${authCtx.logout} />`;
   } else {