diff --git a/src/web-ui/src/app/components/NavPanel/components/PersistentFooterActions.tsx b/src/web-ui/src/app/components/NavPanel/components/PersistentFooterActions.tsx
index 7b9cbb57d3..02c21c8853 100644
--- a/src/web-ui/src/app/components/NavPanel/components/PersistentFooterActions.tsx
+++ b/src/web-ui/src/app/components/NavPanel/components/PersistentFooterActions.tsx
@@ -3,7 +3,6 @@ import {
   Settings,
   Info,
   MoreVertical,
-  PictureInPicture2,
   SquareTerminal,
   Terminal,
   Smartphone,
@@ -11,6 +10,7 @@ import {
   ExternalLink,
   BarChart3,
   ChevronUp,
+  MessageSquare,
   // LogIn,
 } from 'lucide-react';
 import { systemAPI } from '@/infrastructure/api';
@@ -20,7 +20,6 @@ import { useSceneManager } from '../../../hooks/useSceneManager';
 import { useNavSceneStore } from '../../../stores/navSceneStore';
 import { useSceneStore } from '../../../stores/sceneStore';
 import { useCanvasStore } from '@/app/components/panels/content-canvas/stores';
-import { useToolbarModeContext } from '@/flow_chat/components/toolbar-mode/ToolbarModeContext';
 import { useNotification } from '@/shared/notification-system';
 import { useAccountLoginState } from '@/infrastructure/account/useAccountLoginState';
 // import { remoteConnectAPI } from '@/infrastructure/api/service-api/RemoteConnectAPI';
@@ -54,7 +53,6 @@ const PersistentFooterActions: React.FC = () => {
     const activeTab = s.primaryGroup.tabs.find((t) => t.id === s.primaryGroup.activeTabId);
     return activeTab?.content.type === 'browser';
   });
-  const { enableToolbarMode } = useToolbarModeContext();
   const { warning } = useNotification();
   const { loggedIn: accountLoggedIn, deviceName: accountDeviceName } = useAccountLoginState();
 
@@ -155,11 +153,6 @@ const PersistentFooterActions: React.FC = () => {
     void systemAPI.openExternal('https://gitcode.com/OpenHarmonyPCDeveloper/BitFun/issues');
   }, [closeMenu]);
 
-  const handleFloatingMode = () => {
-    closeMenu();
-    enableToolbarMode();
-  };
-
   // const handleAccountLogin = () => {
   //   closeMenu();
   //   setShowAccountLogin(true);
@@ -244,17 +237,6 @@ const PersistentFooterActions: React.FC = () => {
                     )}
                   </button>
                   <div className="bitfun-nav-panel__footer-menu-divider" />
-                  <button
-                    type="button"
-                    className="bitfun-nav-panel__footer-menu-item"
-                    role="menuitem"
-                    onClick={handleFloatingMode}
-                    style={{ display: 'none'}}
-                  >
-                    <PictureInPicture2 size={14} />
-                    <span>{t('header.switchToToolbar')}</span>
-                  </button>
-                  <div className="bitfun-nav-panel__footer-menu-divider" />
                   <button
                     type="button"
                     className="bitfun-nav-panel__footer-menu-item"
@@ -280,18 +262,18 @@ const PersistentFooterActions: React.FC = () => {
                     role="menuitem"
                     onClick={handleFeedback}
                   >
-                    <Info size={14} />
-                    <span>{t('header.about')}</span>
+                    <MessageSquare size={14} />
+                    <span>{t('header.feedback')}</span>
+                  </button>
+                  <button
+                      type="button"
+                      className="bitfun-nav-panel__footer-menu-item"
+                      role="menuitem"
+                      onClick={handleShowAbout}
+                  >
+                      <Info size={14} />
+                      <span>{t('header.about')}</span>
                   </button>
-                    <button
-                        type="button"
-                        className="bitfun-nav-panel__footer-menu-item"
-                        role="menuitem"
-                        onClick={handleShowAbout}
-                    >
-                        <Info size={14} />
-                        <span>{t('header.about')}</span>
-                    </button>
                 </div>
               </>
             )}
diff --git a/src/web-ui/src/app/scenes/agents/AgentsScene.tsx b/src/web-ui/src/app/scenes/agents/AgentsScene.tsx
index 844908d51d..91d69f0590 100644
--- a/src/web-ui/src/app/scenes/agents/AgentsScene.tsx
+++ b/src/web-ui/src/app/scenes/agents/AgentsScene.tsx
@@ -1297,7 +1297,7 @@ const AgentsHomeView: React.FC = () => {
                     variant="secondary"
                     size="small"
                     onClick={() => {
-                      setSettingsTab('external-sources');
+                      setSettingsTab('mcp-tools');
                       closeAgentDetails();
                       openScene('settings');
                     }}
diff --git a/src/web-ui/src/app/scenes/settings/SettingsScene.tsx b/src/web-ui/src/app/scenes/settings/SettingsScene.tsx
index 8e4fc9d439..3794da69a8 100644
--- a/src/web-ui/src/app/scenes/settings/SettingsScene.tsx
+++ b/src/web-ui/src/app/scenes/settings/SettingsScene.tsx
@@ -22,15 +22,15 @@ import {
   ArchivedSessionsConfig,
   BasicsConfig,
   EditorConfig,
-  ExternalSourcesConfig,
+  // ExternalSourcesConfig, // temporarily hidden from config center
   KeyboardShortcutsTab,
   McpToolsConfig,
   MemoriesConfig,
   QuickActionsConfig,
   ReviewConfig,
   SessionPermissionsConfig,
-  SessionPersonalizationConfig,
-  VoiceInputConfig,
+  // SessionPersonalizationConfig, // temporarily hidden from config center
+  // VoiceInputConfig, // temporarily hidden from config center
 } from './settingsContentRegistry';
 import './SettingsScene.scss';
 
@@ -54,14 +54,14 @@ function resolveSettingsContent(tab: ConfigTab): React.ComponentType | null {
     case 'appearance':              return AppearanceConfig;
     case 'models':                  return AIModelConfig;
     case 'archived-sessions':       return ArchivedSessionsConfig;
-    case 'session-personalization': return SessionPersonalizationConfig;
+    // case 'session-personalization': return SessionPersonalizationConfig; // temporarily hidden
     case 'session-permissions':     return SessionPermissionsConfig;
     case 'quick-actions':           return QuickActionsConfig;
-    case 'voice-input':             return VoiceInputConfig;
+    // case 'voice-input':             return VoiceInputConfig; // temporarily hidden
     case 'review':                  return ReviewConfig;
     case 'memories':                return MemoriesConfig;
     case 'mcp-tools':               return McpToolsConfig;
-    case 'external-sources':        return ExternalSourcesConfig;
+    // case 'external-sources':        return ExternalSourcesConfig; // temporarily hidden
     // case 'acp-agents':              return AcpAgentsConfig; // temporarily hidden from config center
     case 'editor':                  return EditorConfig;
     case 'keyboard':                return KeyboardShortcutsTab;
@@ -74,14 +74,14 @@ const SettingsScene: React.FC = () => {
   const setActiveTab = useSettingsStore(s => s.setActiveTab);
 
   const resolvedTab: ConfigTab =
-    (activeTab as string) === 'session-config' ? 'session-personalization' : activeTab;
+    (activeTab as string) === 'session-config' ? 'session-permissions' : activeTab;
   const [outgoingTab, setOutgoingTab] = useState<ConfigTab | null>(null);
   const previousTabRef = useRef<ConfigTab>(resolvedTab);
 
   useEffect(() => {
     /** Legacy merged session settings tab removed in favor of two panels. */
     if ((activeTab as string) === 'session-config') {
-      setActiveTab('session-personalization');
+      setActiveTab('session-permissions');
     }
   }, [activeTab, setActiveTab]);
 
diff --git a/src/web-ui/src/app/scenes/settings/settingsConfig.ts b/src/web-ui/src/app/scenes/settings/settingsConfig.ts
index 15f23bea93..d034b81222 100644
--- a/src/web-ui/src/app/scenes/settings/settingsConfig.ts
+++ b/src/web-ui/src/app/scenes/settings/settingsConfig.ts
@@ -10,14 +10,14 @@ export type ConfigTab =
   | 'appearance'
   | 'models'
   | 'archived-sessions'
-  | 'session-personalization'
+  // | 'session-personalization' // temporarily hidden from config center
   | 'session-permissions'
   | 'quick-actions'
-  | 'voice-input'
+  // | 'voice-input' // temporarily hidden from config center
   | 'review'
   | 'memories'
   | 'mcp-tools'
-  | 'external-sources'
+  // | 'external-sources' // temporarily hidden from config center
   // | 'acp-agents' // temporarily hidden from config center
   // | 'lsp' // temporarily hidden from config center
   | 'editor'
@@ -133,19 +133,20 @@ export const SETTINGS_CATEGORIES: ConfigCategoryDef[] = [
     id: 'smartCapabilities',
     nameKey: 'configCenter.categories.smartCapabilities',
     tabs: [
-      {
-        id: 'session-personalization',
-        labelKey: 'configCenter.tabs.sessionPersonalization',
-        descriptionKey: 'configCenter.tabDescriptions.sessionPersonalization',
-        keywords: [
-          'session',
-          'companion',
-          'agent',
-          'pixel',
-          'pet',
-          'partner',
-        ],
-      },
+      // session-personalization temporarily hidden from config center
+      // {
+      //   id: 'session-personalization',
+      //   labelKey: 'configCenter.tabs.sessionPersonalization',
+      //   descriptionKey: 'configCenter.tabDescriptions.sessionPersonalization',
+      //   keywords: [
+      //     'session',
+      //     'companion',
+      //     'agent',
+      //     'pixel',
+      //     'pet',
+      //     'partner',
+      //   ],
+      // },
       {
         id: 'session-permissions',
         labelKey: 'configCenter.tabs.sessionPermissions',
@@ -184,12 +185,13 @@ export const SETTINGS_CATEGORIES: ConfigCategoryDef[] = [
           'shortcut',
         ],
       },
-      {
-        id: 'voice-input',
-        labelKey: 'configCenter.tabs.voiceInput',
-        descriptionKey: 'configCenter.tabDescriptions.voiceInput',
-        keywords: ['voice', 'speech', 'microphone', 'dictation', 'transcription', 'audio'],
-      },
+      // voice-input temporarily hidden from config center
+      // {
+      //   id: 'voice-input',
+      //   labelKey: 'configCenter.tabs.voiceInput',
+      //   descriptionKey: 'configCenter.tabDescriptions.voiceInput',
+      //   keywords: ['voice', 'speech', 'microphone', 'dictation', 'transcription', 'audio'],
+      // },
       {
         id: 'review',
         labelKey: 'configCenter.tabs.review',
@@ -221,22 +223,23 @@ export const SETTINGS_CATEGORIES: ConfigCategoryDef[] = [
           'knowledge',
         ],
       },
-      {
-        id: 'external-sources',
-        labelKey: 'configCenter.tabs.externalSources',
-        descriptionKey: 'configCenter.tabDescriptions.externalSources',
-        beta: true,
-        keywords: [
-          'external ai applications',
-          'import work',
-          'extensions',
-          'commands',
-          'opencode',
-          'claude code',
-          'codex',
-          'compatibility',
-        ],
-      },
+      // external-sources temporarily hidden from config center
+      // {
+      //   id: 'external-sources',
+      //   labelKey: 'configCenter.tabs.externalSources',
+      //   descriptionKey: 'configCenter.tabDescriptions.externalSources',
+      //   beta: true,
+      //   keywords: [
+      //     'external ai applications',
+      //     'import work',
+      //     'extensions',
+      //     'commands',
+      //     'opencode',
+      //     'claude code',
+      //     'codex',
+      //     'compatibility',
+      //   ],
+      // },
       {
         id: 'mcp-tools',
         labelKey: 'configCenter.tabs.mcpTools',
@@ -299,7 +302,7 @@ export function normalizeSettingsTab(section: string): ConfigTab {
   if (section === 'theme' || section === 'font' || section === 'fonts') return 'appearance';
   if (section === 'logging' || section === 'terminal') return 'basics';
   if (section === 'lsp') return DEFAULT_SETTINGS_TAB;
-  if (section === 'session-config') return 'session-personalization';
+  if (section === 'session-config') return 'session-permissions';
   if (section === 'deep-review' || section === 'code-review' || section === 'review-team') return 'review';
   if (section === 'shortcuts' || section === 'keybindings' || section === 'hotkeys') return 'keyboard';
   if ((KNOWN_TABS as readonly string[]).includes(section)) return section as ConfigTab;
diff --git a/src/web-ui/src/app/scenes/settings/settingsContentRegistry.ts b/src/web-ui/src/app/scenes/settings/settingsContentRegistry.ts
index 807a19a84f..d18d2de39a 100644
--- a/src/web-ui/src/app/scenes/settings/settingsContentRegistry.ts
+++ b/src/web-ui/src/app/scenes/settings/settingsContentRegistry.ts
@@ -45,14 +45,14 @@ const SETTINGS_CONTENT_LOADERS: Partial<Record<ConfigTab, () => Promise<unknown>
   appearance: loadAppearanceConfig,
   models: loadAIModelConfig,
   'archived-sessions': loadArchivedSessionsConfig,
-  'session-personalization': loadSessionConfig,
+  // 'session-personalization': loadSessionConfig, // temporarily hidden from config center
   'session-permissions': loadSessionConfig,
   'quick-actions': loadQuickActionsConfig,
-  'voice-input': loadVoiceInputConfig,
+  // 'voice-input': loadVoiceInputConfig, // temporarily hidden from config center
   review: loadReviewConfig,
   memories: loadMemoriesConfig,
   'mcp-tools': loadMcpToolsConfig,
-  'external-sources': loadExternalSourcesConfig,
+  // 'external-sources': loadExternalSourcesConfig, // temporarily hidden from config center
   // 'acp-agents': loadAcpAgentsConfig, // temporarily hidden from config center
   editor: loadEditorConfig,
   keyboard: loadKeyboardShortcutsTab,
diff --git a/src/web-ui/src/app/scenes/settings/settingsTabSearchContent.ts b/src/web-ui/src/app/scenes/settings/settingsTabSearchContent.ts
index e24ed6814c..17c51a7818 100644
--- a/src/web-ui/src/app/scenes/settings/settingsTabSearchContent.ts
+++ b/src/web-ui/src/app/scenes/settings/settingsTabSearchContent.ts
@@ -57,12 +57,12 @@ export const SETTINGS_TAB_SEARCH_CONTENT: Record<ConfigTab, readonly SettingsTab
     { ns: 'common', key: 'nav.sessions.deleteAllArchived' },
   ],
 
-  'session-personalization': [
-    { ns: 'settings/session-config', key: 'personalizationPage.title' },
-    { ns: 'settings/session-config', key: 'personalizationPage.subtitle' },
-    { ns: 'settings/session-config', key: 'features.agentCompanion.title' },
-    { ns: 'settings/session-config', key: 'features.agentCompanion.subtitle' },
-  ],
+  // 'session-personalization': [
+  //   { ns: 'settings/session-config', key: 'personalizationPage.title' },
+  //   { ns: 'settings/session-config', key: 'personalizationPage.subtitle' },
+  //   { ns: 'settings/session-config', key: 'features.agentCompanion.title' },
+  //   { ns: 'settings/session-config', key: 'features.agentCompanion.subtitle' },
+  // ],
 
   'session-permissions': [
     { ns: 'settings/session-config', key: 'permissionsPage.title' },
@@ -128,14 +128,14 @@ export const SETTINGS_TAB_SEARCH_CONTENT: Record<ConfigTab, readonly SettingsTab
     { ns: 'settings/mcp', key: 'section.serverList.description' },
   ],
 
-  'external-sources': [
-    { ns: 'settings/external-sources', key: 'title' },
-    { ns: 'settings/external-sources', key: 'subtitle' },
-    { ns: 'settings/external-sources', key: 'sources.title' },
-    { ns: 'settings/external-sources', key: 'sources.description' },
-    { ns: 'settings/external-sources', key: 'conflicts.title' },
-    { ns: 'settings/external-sources', key: 'conflicts.description' },
-  ],
+  // 'external-sources': [
+  //   { ns: 'settings/external-sources', key: 'title' },
+  //   { ns: 'settings/external-sources', key: 'subtitle' },
+  //   { ns: 'settings/external-sources', key: 'sources.title' },
+  //   { ns: 'settings/external-sources', key: 'sources.description' },
+  //   { ns: 'settings/external-sources', key: 'conflicts.title' },
+  //   { ns: 'settings/external-sources', key: 'conflicts.description' },
+  // ],
 
   // 'acp-agents': [
   //   { ns: 'settings/acp-agents', key: 'title' },
@@ -182,15 +182,15 @@ export const SETTINGS_TAB_SEARCH_CONTENT: Record<ConfigTab, readonly SettingsTab
     { ns: 'settings/quick-actions', key: 'sections.custom.title' },
   ],
 
-  'voice-input': [
-    { ns: 'settings/voice-input', key: 'title' },
-    { ns: 'settings/voice-input', key: 'subtitle' },
-    { ns: 'settings/voice-input', key: 'sections.composer' },
-    { ns: 'settings/voice-input', key: 'sections.model' },
-    { ns: 'settings/voice-input', key: 'composer.enabled.label' },
-    { ns: 'settings/voice-input', key: 'composer.language.label' },
-    { ns: 'settings/voice-input', key: 'model.download' },
-  ],
+  // 'voice-input': [
+  //   { ns: 'settings/voice-input', key: 'title' },
+  //   { ns: 'settings/voice-input', key: 'subtitle' },
+  //   { ns: 'settings/voice-input', key: 'sections.composer' },
+  //   { ns: 'settings/voice-input', key: 'sections.model' },
+  //   { ns: 'settings/voice-input', key: 'composer.enabled.label' },
+  //   { ns: 'settings/voice-input', key: 'composer.language.label' },
+  //   { ns: 'settings/voice-input', key: 'model.download' },
+  // ],
 
   // lsp: [ ... ], // nav entry temporarily hidden; omit from search index
 };
diff --git a/src/web-ui/src/flow_chat/components/voice/useComposerVoiceInput.ts b/src/web-ui/src/flow_chat/components/voice/useComposerVoiceInput.ts
index 36075ec6ee..a334326661 100644
--- a/src/web-ui/src/flow_chat/components/voice/useComposerVoiceInput.ts
+++ b/src/web-ui/src/flow_chat/components/voice/useComposerVoiceInput.ts
@@ -9,7 +9,6 @@ import {
 import { useAIExperienceSettings } from '@/infrastructure/config/hooks';
 import { isTauriRuntime } from '@/infrastructure/runtime';
 import { useSceneStore } from '@/app/stores/sceneStore';
-import { useSettingsStore } from '@/app/scenes/settings/settingsStore';
 import { notificationService } from '@/shared/notification-system';
 import { createLogger } from '@/shared/utils/logger';
 import {
@@ -116,7 +115,7 @@ export function useComposerVoiceInput({
   }, []);
 
   const openVoiceInputSettings = useCallback(() => {
-    useSettingsStore.getState().setActiveTab('voice-input');
+    // voice-input settings tab is temporarily hidden; open default settings tab.
     useSceneStore.getState().openScene('settings');
   }, []);
 
diff --git a/src/web-ui/src/infrastructure/config/components/ExternalMcpOverview.tsx b/src/web-ui/src/infrastructure/config/components/ExternalMcpOverview.tsx
index 83bbb518eb..c67fae877c 100644
--- a/src/web-ui/src/infrastructure/config/components/ExternalMcpOverview.tsx
+++ b/src/web-ui/src/infrastructure/config/components/ExternalMcpOverview.tsx
@@ -355,7 +355,7 @@ const ExternalMcpOverview: React.FC = () => {
           <IconButton
             variant="ghost"
             size="small"
-            onClick={() => setSettingsTab('external-sources')}
+            onClick={() => setSettingsTab('mcp-tools')}
             tooltip={t('external.manage')}
             aria-label={t('external.manage')}
           >
diff --git a/src/web-ui/src/infrastructure/config/components/ExternalSourcesConfig.scss b/src/web-ui/src/infrastructure/config/components/ExternalSourcesConfig.scss
index 7d33be32bb..f8c2109317 100644
--- a/src/web-ui/src/infrastructure/config/components/ExternalSourcesConfig.scss
+++ b/src/web-ui/src/infrastructure/config/components/ExternalSourcesConfig.scss
@@ -37,12 +37,6 @@
     position: relative;
   }
 
-  .bitfun-config-page-section__body {
-    border: 0;
-    border-radius: 0;
-    background: transparent;
-  }
-
   .bitfun-config-page-row {
     padding: 12px 0;
   }
diff --git a/src/web-ui/src/infrastructure/config/components/McpToolsConfig.scss b/src/web-ui/src/infrastructure/config/components/McpToolsConfig.scss
index 1920a52ac6..0edcd189a8 100644
--- a/src/web-ui/src/infrastructure/config/components/McpToolsConfig.scss
+++ b/src/web-ui/src/infrastructure/config/components/McpToolsConfig.scss
@@ -1,16 +1,6 @@
 @use '../../../component-library/styles/tokens' as *;
 
 .bitfun-mcp-tools {
-  .bitfun-config-page-section__body {
-    border: 0;
-    border-radius: 0;
-    background: transparent;
-  }
-
-  .bitfun-config-page-row {
-    padding: $size-gap-3 0;
-  }
-
   .bitfun-collection-empty {
     justify-content: flex-start;
     padding: $size-gap-2 0;
@@ -50,7 +40,7 @@
 
   &__json-actions {
     display: flex;
-    justify-content: flex-end;
+    justify-content: center;
     gap: $size-gap-2;
   }
 
diff --git a/src/web-ui/src/infrastructure/config/components/SessionConfig.tsx b/src/web-ui/src/infrastructure/config/components/SessionConfig.tsx
index 48e07e73a7..f4a4692fa3 100644
--- a/src/web-ui/src/infrastructure/config/components/SessionConfig.tsx
+++ b/src/web-ui/src/infrastructure/config/components/SessionConfig.tsx
@@ -1226,6 +1226,7 @@ const SessionSettingsPanels: React.FC<SessionSettingsPanelsProps> = ({ variant }
         </ConfigPageSection>
 
         {/* ── Computer use (desktop) ─────────────────────────────── */}
+        {false && (
         <ConfigPageSection
           title={t('computerUse.sectionTitle')}
           description={
@@ -1356,8 +1357,10 @@ const SessionSettingsPanels: React.FC<SessionSettingsPanelsProps> = ({ variant }
             </>
           ) : null}
         </ConfigPageSection>
+        )}
 
         {/* ── Browser control (CDP) ──────────────────────────────── */}
+        {false && (
         <ConfigPageSection
           title={t('browserControl.sectionTitle')}
           description={
@@ -1468,8 +1471,10 @@ const SessionSettingsPanels: React.FC<SessionSettingsPanelsProps> = ({ variant }
             </>
           ) : null}
         </ConfigPageSection>
+        )}
 
         {/* ── Debug mode settings ───────────────────────────────── */}
+        {false && (
         <ConfigPageSection
           title={tDebug('sections.combined')}
           description={tDebug('sections.combinedDescription')}
@@ -1552,6 +1557,7 @@ const SessionSettingsPanels: React.FC<SessionSettingsPanelsProps> = ({ variant }
             </Button>
           </ConfigPageRow>
         </ConfigPageSection>
+        )}
 
         {/* ── Language templates modal ───────────────────────────── */}
         <Modal