fix: remove thinking mode

package.json

@@ -67,7 +67,7 @@
   "author": "CloudCLI UI Contributors",
   "license": "AGPL-3.0-or-later",
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "^0.3.165",
+    "@anthropic-ai/claude-agent-sdk": "^0.2.116",
     "@codemirror/lang-css": "^6.3.1",
     "@codemirror/lang-html": "^6.4.9",
     "@codemirror/lang-javascript": "^6.2.4",

server/modules/websocket/services/shell-websocket.service.ts

@@ -18,7 +18,6 @@ type ShellIncomingMessage = {
   provider?: string;
   initialCommand?: string;
   isPlainShell?: boolean;
-  forceRestart?: boolean;
 };
 
 type PtySessionEntry = {
@@ -181,7 +180,6 @@ export function handleShellConnection(
         const hasSession = readBoolean(data.hasSession);
         const provider = readString(data.provider, 'claude');
         const initialCommand = readString(data.initialCommand);
-        const forceRestart = readBoolean(data.forceRestart);
         const isPlainShell =
           readBoolean(data.isPlainShell) ||
           (!!initialCommand && !hasSession) ||
@@ -202,7 +200,7 @@ export function handleShellConnection(
             : '';
         ptySessionKey = `${projectPath}_${sessionId ?? 'default'}${commandSuffix}`;
 
-        if (isLoginCommand || forceRestart) {
+        if (isLoginCommand) {
           const oldSession = ptySessionsMap.get(ptySessionKey);
           if (oldSession) {
             if (oldSession.timeoutId) {
@@ -213,8 +211,7 @@ export function handleShellConnection(
           }
         }
 
-        const existingSession =
-          isLoginCommand || forceRestart ? null : ptySessionsMap.get(ptySessionKey);
+        const existingSession = isLoginCommand ? null : ptySessionsMap.get(ptySessionKey);
         if (existingSession) {
           shellProcess = existingSession.pty;
           if (existingSession.timeoutId) {
@@ -371,10 +368,6 @@ export function handleShellConnection(
           }
 
           const session = ptySessionsMap.get(ptySessionKey);
-          if (session && session.pty !== shellProcess) {
-            return;
-          }
-
           if (session && session.ws && session.ws.readyState === WebSocket.OPEN) {
             session.ws.send(
               JSON.stringify({
@@ -458,10 +451,6 @@ export function handleShellConnection(
 
     session.ws = null;
     session.timeoutId = setTimeout(() => {
-      if (ptySessionsMap.get(ptySessionKey as string) !== session) {
-        return;
-      }
-
       session.pty.kill();
       ptySessionsMap.delete(ptySessionKey as string);
     }, PTY_SESSION_TIMEOUT);

src/components/chat/constants/thinkingModes.ts

@@ -1,44 +0,0 @@
-import { Brain, Zap, Sparkles, Atom } from 'lucide-react';
-
-export const thinkingModes = [
-  {
-    id: 'none',
-    name: 'Standard',
-    description: 'Regular Claude response',
-    icon: null,
-    prefix: '',
-    color: 'text-gray-600'
-  },
-  {
-    id: 'think',
-    name: 'Think',
-    description: 'Basic extended thinking',
-    icon: Brain,
-    prefix: 'think',
-    color: 'text-blue-600'
-  },
-  {
-    id: 'think-hard',
-    name: 'Think Hard',
-    description: 'More thorough evaluation',
-    icon: Zap,
-    prefix: 'think hard',
-    color: 'text-purple-600'
-  },
-  {
-    id: 'think-harder',
-    name: 'Think Harder',
-    description: 'Deep analysis with alternatives',
-    icon: Sparkles,
-    prefix: 'think harder',
-    color: 'text-indigo-600'
-  },
-  {
-    id: 'ultrathink',
-    name: 'Ultrathink',
-    description: 'Maximum thinking budget',
-    icon: Atom,
-    prefix: 'ultrathink',
-    color: 'text-red-600'
-  }
-];

src/components/chat/hooks/useChatComposerState.ts

@@ -12,7 +12,6 @@ import type {
 import { useDropzone } from 'react-dropzone';
 
 import { authenticatedFetch } from '../../../utils/api';
-import { thinkingModes } from '../constants/thinkingModes';
 import { grantClaudeToolPermission } from '../utils/chatPermissions';
 import { safeLocalStorage } from '../utils/chatStorage';
 import type {
@@ -204,7 +203,6 @@ export function useChatComposerState({
   const [uploadingImages, setUploadingImages] = useState<Map<string, number>>(new Map());
   const [imageErrors, setImageErrors] = useState<Map<string, string>>(new Map());
   const [isTextareaExpanded, setIsTextareaExpanded] = useState(false);
-  const [thinkingMode, setThinkingMode] = useState('none');
   const [commandModalPayload, setCommandModalPayload] = useState<CommandModalPayload | null>(null);
 
   const textareaRef = useRef<HTMLTextAreaElement>(null);
@@ -562,11 +560,7 @@ export function useChatComposerState({
         }
       }
 
-      let messageContent = currentInput;
-      const selectedThinkingMode = thinkingModes.find((mode: { id: string; prefix?: string }) => mode.id === thinkingMode);
-      if (selectedThinkingMode && selectedThinkingMode.prefix) {
-        messageContent = `${selectedThinkingMode.prefix}: ${currentInput}`;
-      }
+      const messageContent = currentInput;
 
       let uploadedImages: unknown[] = [];
       if (attachedImages.length > 0) {
@@ -749,7 +743,6 @@ export function useChatComposerState({
       setUploadingImages(new Map());
       setImageErrors(new Map());
       setIsTextareaExpanded(false);
-      setThinkingMode('none');
 
       if (textareaRef.current) {
         textareaRef.current.style.height = 'auto';
@@ -783,7 +776,6 @@ export function useChatComposerState({
       setIsLoading,
       setIsUserScrolledUp,
       slashCommands,
-      thinkingMode,
     ],
   );
 
@@ -1020,8 +1012,6 @@ export function useChatComposerState({
     textareaRef,
     inputHighlightRef,
     isTextareaExpanded,
-    thinkingMode,
-    setThinkingMode,
     slashCommandsCount,
     filteredCommands,
     frequentCommands,

src/components/chat/view/ChatInterface.tsx

@@ -141,8 +141,6 @@ function ChatInterface({
     textareaRef,
     inputHighlightRef,
     isTextareaExpanded,
-    thinkingMode,
-    setThinkingMode,
     slashCommandsCount,
     filteredCommands,
     frequentCommands,
@@ -369,8 +367,6 @@ function ChatInterface({
           provider={provider}
           permissionMode={permissionMode}
           onModeSwitch={cyclePermissionMode}
-          thinkingMode={thinkingMode}
-          setThinkingMode={setThinkingMode}
           tokenBudget={tokenBudget}
           slashCommandsCount={slashCommandsCount}
           onToggleCommandMenu={handleToggleCommandMenu}

src/components/chat/view/subcomponents/ChatComposer.tsx

@@ -2,23 +2,16 @@ import { useTranslation } from 'react-i18next';
 import type {
   ChangeEvent,
   ClipboardEvent,
-  Dispatch,
   FormEvent,
   KeyboardEvent,
   MouseEvent,
   ReactNode,
   RefObject,
-  SetStateAction,
   TouchEvent,
 } from 'react';
 import { ImageIcon, MessageSquareIcon, XIcon, ArrowDownIcon } from 'lucide-react';
+
 import type { PendingPermissionRequest, PermissionMode, Provider } from '../../types/types';
-import CommandMenu from './CommandMenu';
-import ClaudeStatus from './ClaudeStatus';
-import ImageAttachment from './ImageAttachment';
-import PermissionRequestsBanner from './PermissionRequestsBanner';
-import ThinkingModeSelector from './ThinkingModeSelector';
-import TokenUsageSummary from './TokenUsageSummary';
 import {
   PromptInput,
   PromptInputHeader,
@@ -30,6 +23,12 @@ import {
   PromptInputSubmit,
 } from '../../../../shared/view/ui';
 
+import CommandMenu from './CommandMenu';
+import ClaudeStatus from './ClaudeStatus';
+import ImageAttachment from './ImageAttachment';
+import PermissionRequestsBanner from './PermissionRequestsBanner';
+import TokenUsageSummary from './TokenUsageSummary';
+
 interface MentionableFile {
   name: string;
   path: string;
@@ -58,8 +57,6 @@ interface ChatComposerProps {
   provider: Provider | string;
   permissionMode: PermissionMode | string;
   onModeSwitch: () => void;
-  thinkingMode: string;
-  setThinkingMode: Dispatch<SetStateAction<string>>;
   tokenBudget: Record<string, unknown> | null;
   slashCommandsCount: number;
   onToggleCommandMenu: () => void;
@@ -113,8 +110,6 @@ export default function ChatComposer({
   provider,
   permissionMode,
   onModeSwitch,
-  thinkingMode,
-  setThinkingMode,
   tokenBudget,
   slashCommandsCount,
   onToggleCommandMenu,
@@ -358,10 +353,6 @@ export default function ChatComposer({
               </div>
             </button>
 
-            {provider === 'claude' && (
-              <ThinkingModeSelector selectedMode={thinkingMode} onModeChange={setThinkingMode} onClose={() => {}} className="" />
-            )}
-
             <TokenUsageSummary usage={tokenBudget} />
 
             <PromptInputButton
@@ -383,7 +374,7 @@ export default function ChatComposer({
               <PromptInputButton
                 tooltip={{ content: t('input.clearInput', { defaultValue: 'Clear input' }) }}
                 onClick={onClearInput}
-                className="hidden sm:No-flex"
+                className="hidden sm:flex"
               >
                 <XIcon />
               </PromptInputButton>
@@ -400,7 +391,8 @@ export default function ChatComposer({
               {sendByCtrlEnter ? t('input.hintText.ctrlEnter') : t('input.hintText.enter')}
             </div>
             <PromptInputSubmit
-              disabled={!input.trim() || isLoading}
+              onClick={isLoading ? onAbortSession : undefined}
+              disabled={!isLoading && !input.trim()}
               className="h-10 w-10 sm:h-10 sm:w-10"
             />
           </div>

src/components/chat/view/subcomponents/ProviderSelectionEmptyState.tsx

@@ -321,7 +321,6 @@ export default function ProviderSelectionEmptyState({
 
           <p className="mt-3 flex items-center justify-center gap-1.5 text-center text-xs text-muted-foreground/60">
             <Trans
-              ns="chat"
               i18nKey="providerSelection.pressToSearch"
               values={{ shortcut: MOD_KEY === "⌘" ? "⌘K" : "Ctrl+K" }}
               components={{

src/components/chat/view/subcomponents/ThinkingModeSelector.tsx

@@ -1,244 +0,0 @@
-import { useState, useRef, useEffect, useCallback, type CSSProperties } from 'react';
-import { createPortal } from 'react-dom';
-import { Brain, X } from 'lucide-react';
-import { useTranslation } from 'react-i18next';
-import { thinkingModes } from '../../constants/thinkingModes';
-
-type ThinkingModeSelectorProps = {
-  selectedMode: string;
-  onModeChange: (modeId: string) => void;
-  onClose?: () => void;
-  className?: string;
-};
-
-function ThinkingModeSelector({ selectedMode, onModeChange, onClose, className = '' }: ThinkingModeSelectorProps) {
-  const { t } = useTranslation('chat');
-  const [isOpen, setIsOpen] = useState(false);
-  const containerRef = useRef<HTMLDivElement>(null);
-  const triggerRef = useRef<HTMLButtonElement>(null);
-  const dropdownRef = useRef<HTMLDivElement>(null);
-  const [dropdownStyle, setDropdownStyle] = useState<CSSProperties | null>(null);
-
-  // Mapping from mode ID to translation key
-  const modeKeyMap: Record<string, string> = {
-    'think-hard': 'thinkHard',
-    'think-harder': 'thinkHarder'
-  };
-  // Create translated modes for display
-  const translatedModes = thinkingModes.map(mode => {
-    const modeKey = modeKeyMap[mode.id] || mode.id;
-    return {
-      ...mode,
-      name: t(`thinkingMode.modes.${modeKey}.name`),
-      description: t(`thinkingMode.modes.${modeKey}.description`),
-      prefix: t(`thinkingMode.modes.${modeKey}.prefix`)
-    };
-  });
-
-  const closeDropdown = useCallback(() => {
-    setIsOpen(false);
-    onClose?.();
-  }, [onClose]);
-
-  const updateDropdownPosition = useCallback(() => {
-    const trigger = triggerRef.current;
-    const dropdown = dropdownRef.current;
-    if (!trigger || !dropdown || typeof window === 'undefined') {
-      return;
-    }
-
-    const triggerRect = trigger.getBoundingClientRect();
-    const viewportPadding = window.innerWidth < 640 ? 12 : 16;
-    const spacing = 8;
-    const width = Math.min(window.innerWidth - viewportPadding * 2, window.innerWidth < 640 ? 320 : 256);
-    let left = triggerRect.left + triggerRect.width / 2 - width / 2;
-    left = Math.max(viewportPadding, Math.min(left, window.innerWidth - width - viewportPadding));
-
-    const measuredHeight = dropdown.offsetHeight || 0;
-    const spaceBelow = window.innerHeight - triggerRect.bottom - spacing - viewportPadding;
-    const spaceAbove = triggerRect.top - spacing - viewportPadding;
-    const openBelow = spaceBelow >= Math.min(measuredHeight || 320, 320) || spaceBelow >= spaceAbove;
-    const availableHeight = Math.min(
-      window.innerHeight - viewportPadding * 2,
-      Math.max(180, openBelow ? spaceBelow : spaceAbove),
-    );
-    const panelHeight = Math.min(measuredHeight || availableHeight, availableHeight);
-    const top = openBelow
-      ? Math.min(triggerRect.bottom + spacing, window.innerHeight - viewportPadding - panelHeight)
-      : Math.max(viewportPadding, triggerRect.top - spacing - panelHeight);
-
-    setDropdownStyle({
-      position: 'fixed',
-      top,
-      left,
-      width,
-      maxHeight: availableHeight,
-      zIndex: 80,
-    });
-  }, []);
-
-  useEffect(() => {
-    if (!isOpen) {
-      setDropdownStyle(null);
-      return;
-    }
-
-    const rafId = window.requestAnimationFrame(updateDropdownPosition);
-    const handleViewportChange = () => updateDropdownPosition();
-
-    window.addEventListener('resize', handleViewportChange);
-    window.addEventListener('scroll', handleViewportChange, true);
-
-    return () => {
-      window.cancelAnimationFrame(rafId);
-      window.removeEventListener('resize', handleViewportChange);
-      window.removeEventListener('scroll', handleViewportChange, true);
-    };
-  }, [isOpen, updateDropdownPosition]);
-
-  useEffect(() => {
-    if (!isOpen) {
-      return;
-    }
-
-    const handlePointerDown = (event: PointerEvent) => {
-      const target = event.target;
-      if (!(target instanceof Node)) {
-        return;
-      }
-
-      if (containerRef.current?.contains(target) || dropdownRef.current?.contains(target)) {
-        return;
-      }
-
-      closeDropdown();
-    };
-
-    const handleKeyDown = (event: KeyboardEvent) => {
-      if (event.key === 'Escape') {
-        closeDropdown();
-      }
-    };
-
-    document.addEventListener('pointerdown', handlePointerDown, true);
-    document.addEventListener('keydown', handleKeyDown);
-
-    return () => {
-      document.removeEventListener('pointerdown', handlePointerDown, true);
-      document.removeEventListener('keydown', handleKeyDown);
-    };
-  }, [isOpen, closeDropdown]);
-
-  const currentMode = translatedModes.find(mode => mode.id === selectedMode) || translatedModes[0];
-  const IconComponent = currentMode.icon || Brain;
-
-  return (
-    <div className={`relative ${className}`} ref={containerRef}>
-      <button
-        ref={triggerRef}
-        type="button"
-        onClick={() => {
-          if (isOpen) {
-            closeDropdown();
-            return;
-          }
-
-          setIsOpen(true);
-        }}
-        className={`flex h-10 w-10 items-center justify-center rounded-full transition-all duration-200 sm:h-10 sm:w-10 ${selectedMode === 'none'
-            ? 'bg-gray-100 hover:bg-gray-200 dark:bg-gray-700 dark:hover:bg-gray-600'
-            : 'bg-blue-100 hover:bg-blue-200 dark:bg-blue-900 dark:hover:bg-blue-800'
-          }`}
-        title={t('thinkingMode.buttonTitle', { mode: currentMode.name })}
-        aria-haspopup="dialog"
-        aria-expanded={isOpen}
-      >
-        <IconComponent className={`h-5 w-5 ${currentMode.color}`} />
-      </button>
-
-      {isOpen && typeof document !== 'undefined' && createPortal(
-        <div
-          ref={dropdownRef}
-          style={dropdownStyle || { position: 'fixed', top: 0, left: 0, visibility: 'hidden' }}
-          className="flex flex-col overflow-hidden rounded-xl border border-gray-200 bg-white shadow-xl dark:border-gray-700 dark:bg-gray-800"
-          role="dialog"
-          aria-modal="false"
-        >
-          <div className="border-b border-gray-200 p-3 dark:border-gray-700">
-            <div className="flex items-center justify-between">
-              <h3 className="text-sm font-semibold text-gray-900 dark:text-white">
-                {t('thinkingMode.selector.title')}
-              </h3>
-              <button
-                type="button"
-                onClick={closeDropdown}
-                className="rounded p-1 hover:bg-gray-100 dark:hover:bg-gray-700"
-              >
-                <X className="h-4 w-4 text-gray-500" />
-              </button>
-            </div>
-            <p className="mt-1 text-xs text-gray-500 dark:text-gray-400">
-              {t('thinkingMode.selector.description')}
-            </p>
-          </div>
-
-          <div className="min-h-0 overflow-y-auto py-1">
-            {translatedModes.map((mode) => {
-              const ModeIcon = mode.icon;
-              const isSelected = mode.id === selectedMode;
-
-              return (
-                <button
-                  key={mode.id}
-                  type="button"
-                  onClick={() => {
-                    onModeChange(mode.id);
-                    closeDropdown();
-                  }}
-                  className={`w-full px-4 py-3 text-left transition-colors hover:bg-gray-50 dark:hover:bg-gray-700 ${isSelected ? 'bg-gray-50 dark:bg-gray-700' : ''
-                    }`}
-                >
-                  <div className="flex items-start gap-3">
-                    <div className={`mt-0.5 ${mode.icon ? mode.color : 'text-gray-400'}`}>
-                      {ModeIcon ? <ModeIcon className="h-5 w-5" /> : <div className="h-5 w-5" />}
-                    </div>
-                    <div className="min-w-0 flex-1">
-                      <div className="flex items-center gap-2">
-                        <span className={`text-sm font-medium ${isSelected ? 'text-gray-900 dark:text-white' : 'text-gray-700 dark:text-gray-300'
-                          }`}>
-                          {mode.name}
-                        </span>
-                        {isSelected && (
-                          <span className="rounded bg-blue-100 px-2 py-0.5 text-xs text-blue-700 dark:bg-blue-900 dark:text-blue-300">
-                            {t('thinkingMode.selector.active')}
-                          </span>
-                        )}
-                      </div>
-                      <p className="mt-0.5 text-xs text-gray-500 dark:text-gray-400">
-                        {mode.description}
-                      </p>
-                      {mode.prefix && (
-                        <code className="mt-1 inline-block rounded bg-gray-100 px-1.5 py-0.5 text-xs dark:bg-gray-700">
-                          {mode.prefix}
-                        </code>
-                      )}
-                    </div>
-                  </div>
-                </button>
-              );
-            })}
-          </div>
-
-          <div className="border-t border-gray-200 bg-gray-50 p-3 dark:border-gray-700 dark:bg-gray-900">
-            <p className="text-xs text-gray-600 dark:text-gray-400">
-              <strong>Tip:</strong> {t('thinkingMode.selector.tip')}
-            </p>
-          </div>
-        </div>,
-        document.body
-      )}
-    </div>
-  );
-}
-
-export default ThinkingModeSelector;

src/components/shell/hooks/useShellConnection.ts

@@ -2,7 +2,6 @@ import { useCallback, useEffect, useRef, useState } from 'react';
 import type { MutableRefObject } from 'react';
 import type { FitAddon } from '@xterm/addon-fit';
 import type { Terminal } from '@xterm/xterm';
-
 import type { Project, ProjectSession } from '../../../types/app';
 import { TERMINAL_INIT_DELAY_MS } from '../constants/constants';
 import { getShellWebSocketUrl, parseShellMessage, sendSocketMessage } from '../utils/socket';
@@ -32,8 +31,8 @@ type UseShellConnectionResult = {
   isConnected: boolean;
   isConnecting: boolean;
   closeSocket: () => void;
-  connectToShell: (options?: { forceRestart?: boolean }) => void;
-  disconnectFromShell: (options?: { suppressAutoConnect?: boolean }) => void;
+  connectToShell: () => void;
+  disconnectFromShell: () => void;
 };
 
 export function useShellConnection({
@@ -55,8 +54,6 @@ export function useShellConnection({
   const [isConnected, setIsConnected] = useState(false);
   const [isConnecting, setIsConnecting] = useState(false);
   const connectingRef = useRef(false);
-  const forceRestartOnInitRef = useRef(false);
-  const suppressAutoConnectRef = useRef(false);
 
   const handleProcessCompletion = useCallback(
     (output: string) => {
@@ -144,8 +141,6 @@ export function useShellConnection({
             }
 
             currentFitAddon.fit();
-            const forceRestart = forceRestartOnInitRef.current;
-            forceRestartOnInitRef.current = false;
 
             sendSocketMessage(socket, {
               type: 'init',
@@ -157,7 +152,6 @@ export function useShellConnection({
               rows: currentTerminal.rows,
               initialCommand: initialCommandRef.current,
               isPlainShell: isPlainShellRef.current,
-              forceRestart,
             });
           }, TERMINAL_INIT_DELAY_MS);
         };
@@ -183,7 +177,6 @@ export function useShellConnection({
         setIsConnected(false);
         setIsConnecting(false);
         connectingRef.current = false;
-        forceRestartOnInitRef.current = false;
       }
     },
     [
@@ -202,40 +195,27 @@ export function useShellConnection({
     ],
   );
 
-  const connectToShell = useCallback((options?: { forceRestart?: boolean }) => {
+  const connectToShell = useCallback(() => {
     if (!isInitialized || isConnected || isConnecting || connectingRef.current) {
       return;
     }
 
-    forceRestartOnInitRef.current = Boolean(options?.forceRestart);
-    suppressAutoConnectRef.current = false;
     connectingRef.current = true;
     setIsConnecting(true);
     connectWebSocket(true);
   }, [connectWebSocket, isConnected, isConnecting, isInitialized]);
 
-  const disconnectFromShell = useCallback((options?: { suppressAutoConnect?: boolean }) => {
-    if (options?.suppressAutoConnect) {
-      suppressAutoConnectRef.current = true;
-    }
-
+  const disconnectFromShell = useCallback(() => {
     closeSocket();
     clearTerminalScreen();
     setIsConnected(false);
     setIsConnecting(false);
     connectingRef.current = false;
-    forceRestartOnInitRef.current = false;
     setAuthUrl('');
   }, [clearTerminalScreen, closeSocket, setAuthUrl]);
 
   useEffect(() => {
-    if (
-      !autoConnect ||
-      suppressAutoConnectRef.current ||
-      !isInitialized ||
-      isConnecting ||
-      isConnected
-    ) {
+    if (!autoConnect || !isInitialized || isConnecting || isConnected) {
       return;
     }
 

src/components/shell/types/types.ts

@@ -1,7 +1,6 @@
 import type { MutableRefObject, RefObject } from 'react';
 import type { FitAddon } from '@xterm/addon-fit';
 import type { Terminal } from '@xterm/xterm';
-
 import type { Project, ProjectSession } from '../../../types/app';
 
 export type AuthCopyStatus = 'idle' | 'copied' | 'failed';
@@ -16,7 +15,6 @@ export type ShellInitMessage = {
   rows: number;
   initialCommand: string | null | undefined;
   isPlainShell: boolean;
-  forceRestart?: boolean;
 };
 
 export type ShellResizeMessage = {
@@ -71,8 +69,8 @@ export type UseShellRuntimeResult = {
   isConnecting: boolean;
   authUrl: string;
   authUrlVersion: number;
-  connectToShell: (options?: { forceRestart?: boolean }) => void;
-  disconnectFromShell: (options?: { suppressAutoConnect?: boolean }) => void;
+  connectToShell: () => void;
+  disconnectFromShell: () => void;
   openAuthUrlInBrowser: (url?: string) => boolean;
   copyAuthUrlToClipboard: (url?: string) => Promise<boolean>;
 };

src/components/shell/view/Shell.tsx

@@ -1,6 +1,5 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useTranslation } from 'react-i18next';
-
 import '@xterm/xterm/css/xterm.css';
 import type { Project, ProjectSession } from '../../../types/app';
 import {
@@ -14,7 +13,6 @@ import {
 import { useShellRuntime } from '../hooks/useShellRuntime';
 import { sendSocketMessage } from '../utils/socket';
 import { getSessionDisplayName } from '../utils/auth';
-
 import ShellConnectionOverlay from './subcomponents/ShellConnectionOverlay';
 import ShellEmptyState from './subcomponents/ShellEmptyState';
 import ShellHeader from './subcomponents/ShellHeader';
@@ -48,8 +46,6 @@ export default function Shell({
   const [isRestarting, setIsRestarting] = useState(false);
   const [cliPromptOptions, setCliPromptOptions] = useState<CliPromptOption[] | null>(null);
   const promptCheckTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
-  const restartTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
-  const restartAfterInitRef = useRef(false);
   const onOutputRef = useRef<(() => void) | null>(null);
 
   const {
@@ -144,7 +140,6 @@ export default function Shell({
   useEffect(() => {
     return () => {
       if (promptCheckTimer.current) clearTimeout(promptCheckTimer.current);
-      if (restartTimerRef.current) clearTimeout(restartTimerRef.current);
     };
   }, []);
 
@@ -195,42 +190,12 @@ export default function Shell({
   );
 
   const handleRestartShell = useCallback(() => {
-    restartAfterInitRef.current = true;
     setIsRestarting(true);
-    if (restartTimerRef.current) {
-      clearTimeout(restartTimerRef.current);
-    }
-    restartTimerRef.current = setTimeout(() => {
+    window.setTimeout(() => {
       setIsRestarting(false);
-      restartTimerRef.current = null;
     }, SHELL_RESTART_DELAY_MS);
   }, []);
 
-  const handleDisconnectShell = useCallback(() => {
-    restartAfterInitRef.current = false;
-    if (restartTimerRef.current) {
-      clearTimeout(restartTimerRef.current);
-      restartTimerRef.current = null;
-    }
-    setIsRestarting(false);
-    disconnectFromShell({ suppressAutoConnect: true });
-  }, [disconnectFromShell]);
-
-  useEffect(() => {
-    if (
-      !restartAfterInitRef.current ||
-      isRestarting ||
-      !isInitialized ||
-      isConnected ||
-      isConnecting
-    ) {
-      return;
-    }
-
-    restartAfterInitRef.current = false;
-    connectToShell({ forceRestart: true });
-  }, [connectToShell, isConnected, isConnecting, isInitialized, isRestarting]);
-
   if (!selectedProject) {
     return (
       <ShellEmptyState
@@ -289,7 +254,7 @@ export default function Shell({
         isRestarting={isRestarting}
         hasSession={Boolean(selectedSession)}
         sessionDisplayNameShort={sessionDisplayNameShort}
-        onDisconnect={handleDisconnectShell}
+        onDisconnect={disconnectFromShell}
         onRestart={handleRestartShell}
         statusNewSessionText={t('shell.status.newSession')}
         statusInitializingText={t('shell.status.initializing')}
@@ -298,7 +263,7 @@ export default function Shell({
         disconnectTitle={t('shell.actions.disconnectTitle')}
         restartLabel={t('shell.actions.restart')}
         restartTitle={t('shell.actions.restartTitle')}
-        disableRestart={isRestarting || !isInitialized}
+        disableRestart={isRestarting || isConnected}
       />
 
       <div className="relative flex-1 overflow-hidden p-2">
@@ -316,7 +281,7 @@ export default function Shell({
             connectLabel={t('shell.actions.connect')}
             connectTitle={t('shell.actions.connectTitle')}
             connectingLabel={t('shell.connecting')}
-            onConnect={handleRestartShell}
+            onConnect={connectToShell}
           />
         )}
 

src/components/shell/view/subcomponents/ShellConnectionOverlay.tsx

@@ -1,5 +1,3 @@
-import { Loader2, RotateCcw } from 'lucide-react';
-
 type ShellConnectionOverlayProps = {
   mode: 'loading' | 'connect' | 'connecting';
   description: string;
@@ -21,42 +19,40 @@ export default function ShellConnectionOverlay({
 }: ShellConnectionOverlayProps) {
   if (mode === 'loading') {
     return (
-      <div className="absolute inset-0 z-20 flex items-center justify-center bg-gray-950/90">
-        <div className="inline-flex items-center gap-2 text-sm font-medium text-gray-100">
-          <Loader2 className="h-4 w-4 animate-spin text-blue-300" aria-hidden="true" />
-          <span>{loadingLabel}</span>
-        </div>
+      <div className="absolute inset-0 flex items-center justify-center bg-gray-900 bg-opacity-90">
+        <div className="text-white">{loadingLabel}</div>
       </div>
     );
   }
 
   if (mode === 'connect') {
     return (
-      <div className="absolute inset-0 z-20 flex items-center justify-center bg-gray-950/90 p-6">
-        <div className="flex w-full max-w-md flex-col items-center gap-3 text-center">
+      <div className="absolute inset-0 flex items-center justify-center bg-gray-900 bg-opacity-90 p-4">
+        <div className="w-full max-w-sm text-center">
           <button
-            type="button"
             onClick={onConnect}
-            className="pointer-events-auto inline-flex min-h-12 w-full max-w-xs cursor-pointer items-center justify-center gap-2 rounded-md bg-emerald-600 px-5 py-3 text-base font-semibold text-white shadow-lg shadow-emerald-950/30 transition-colors hover:bg-emerald-500 focus:outline-none focus:ring-2 focus:ring-emerald-300 focus:ring-offset-2 focus:ring-offset-gray-950 active:bg-emerald-700"
+            className="flex w-full items-center justify-center space-x-2 rounded-lg bg-green-600 px-6 py-3 text-base font-medium text-white transition-colors hover:bg-green-700 sm:w-auto"
             title={connectTitle}
           >
-            <RotateCcw className="h-4 w-4" aria-hidden="true" />
-            <span className="min-w-0 truncate">{connectLabel}</span>
+            <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+            </svg>
+            <span>{connectLabel}</span>
           </button>
-          <p className="max-w-md break-words px-2 text-sm leading-6 text-gray-300">{description}</p>
+          <p className="mt-3 px-2 text-sm text-gray-400">{description}</p>
         </div>
       </div>
     );
   }
 
   return (
-    <div className="absolute inset-0 z-20 flex items-center justify-center bg-gray-950/90 p-6">
-      <div className="flex w-full max-w-md flex-col items-center gap-3 text-center">
-        <div className="flex items-center justify-center gap-3 text-yellow-300">
-          <Loader2 className="h-5 w-5 animate-spin" aria-hidden="true" />
+    <div className="absolute inset-0 flex items-center justify-center bg-gray-900 bg-opacity-90 p-4">
+      <div className="w-full max-w-sm text-center">
+        <div className="flex items-center justify-center space-x-3 text-yellow-400">
+          <div className="h-6 w-6 animate-spin rounded-full border-2 border-yellow-400 border-t-transparent"></div>
           <span className="text-base font-medium">{connectingLabel}</span>
         </div>
-        <p className="max-w-md break-words px-2 text-sm leading-6 text-gray-300">{description}</p>
+        <p className="mt-3 px-2 text-sm text-gray-400">{description}</p>
       </div>
     </div>
   );

src/components/shell/view/subcomponents/ShellHeader.tsx

@@ -1,5 +1,3 @@
-import { RotateCcw, X } from 'lucide-react';
-
 type ShellHeaderProps = {
   isConnected: boolean;
   isInitialized: boolean;
@@ -52,27 +50,34 @@ export default function ShellHeader({
           {isRestarting && <span className="text-xs text-blue-400">{statusRestartingText}</span>}
         </div>
 
-        <div className="flex items-center gap-2">
+        <div className="flex items-center space-x-3">
           {isConnected && (
             <button
-              type="button"
               onClick={onDisconnect}
-              className="inline-flex h-8 items-center gap-1.5 rounded-md bg-red-600 px-3 text-xs font-medium text-white transition-colors hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-red-400/70 focus:ring-offset-2 focus:ring-offset-gray-800"
+              className="flex items-center space-x-1 rounded bg-red-600 px-3 py-1 text-xs text-white hover:bg-red-700"
               title={disconnectTitle}
             >
-              <X className="h-3.5 w-3.5" aria-hidden="true" />
+              <svg className="h-3 w-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+              </svg>
               <span>{disconnectLabel}</span>
             </button>
           )}
 
           <button
-            type="button"
             onClick={onRestart}
             disabled={disableRestart}
-            className="inline-flex h-8 items-center gap-1.5 rounded-md border border-gray-600/80 bg-gray-700/70 px-3 text-xs font-medium text-gray-100 transition-colors hover:border-blue-400/70 hover:bg-blue-600/80 hover:text-white focus:outline-none focus:ring-2 focus:ring-blue-400/70 focus:ring-offset-2 focus:ring-offset-gray-800 disabled:cursor-not-allowed disabled:border-transparent disabled:bg-transparent disabled:text-gray-500 disabled:opacity-60"
+            className="flex items-center space-x-1 text-xs text-gray-400 hover:text-white disabled:cursor-not-allowed disabled:opacity-50"
             title={restartTitle}
           >
-            <RotateCcw className={`h-3.5 w-3.5 ${isRestarting ? 'animate-spin' : ''}`} aria-hidden="true" />
+            <svg className="h-3 w-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"
+              />
+            </svg>
             <span>{restartLabel}</span>
           </button>
         </div>

src/i18n/locales/de/chat.json

@@ -138,42 +138,6 @@
     "clearInput": "Eingabe leeren",
     "scrollToBottom": "Nach unten scrollen"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Denkmodus",
-      "description": "Erweitertes Denken gibt Claude mehr Zeit, Alternativen zu evaluieren",
-      "active": "Aktiv",
-      "tip": "Höhere Denkmodi brauchen mehr Zeit, liefern aber eine gründlichere Analyse"
-    },
-    "modes": {
-      "none": {
-        "name": "Standard",
-        "description": "Reguläre Claude-Antwort",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Denken",
-        "description": "Grundlegendes erweitertes Denken",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Intensiv denken",
-        "description": "Gründlichere Auswertung",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Sehr intensiv denken",
-        "description": "Tiefgehende Analyse mit Alternativen",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultradenken",
-        "description": "Maximales Denkbudget",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "Denkmodus: {{mode}}"
-  },
   "providerSelection": {
     "title": "KI-Assistent wählen",
     "description": "Anbieter auswählen, um eine neue Unterhaltung zu starten",

src/i18n/locales/en/chat.json

@@ -139,42 +139,6 @@
     "clearInput": "Clear input",
     "scrollToBottom": "Scroll to bottom"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Thinking Mode",
-      "description": "Extended thinking gives Claude more time to evaluate alternatives",
-      "active": "Active",
-      "tip": "Higher thinking modes take more time but provide more thorough analysis"
-    },
-    "modes": {
-      "none": {
-        "name": "Standard",
-        "description": "Regular Claude response",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Think",
-        "description": "Basic extended thinking",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Think Hard",
-        "description": "More thorough evaluation",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Think Harder",
-        "description": "Deep analysis with alternatives",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultrathink",
-        "description": "Maximum thinking budget",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "Thinking mode: {{mode}}"
-  },
   "providerSelection": {
     "title": "Choose Your AI Assistant",
     "description": "Select a provider to start a new conversation",
@@ -229,7 +193,7 @@
       "disconnect": "Disconnect",
       "disconnectTitle": "Disconnect from shell",
       "restart": "Restart",
-      "restartTitle": "Restart Shell",
+      "restartTitle": "Restart Shell (disconnect first)",
       "connect": "Continue in Shell",
       "connectTitle": "Connect to shell"
     },

src/i18n/locales/it/chat.json

@@ -138,42 +138,6 @@
     "clearInput": "Cancella input",
     "scrollToBottom": "Scorri in basso"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Modalità ragionamento",
-      "description": "Il ragionamento esteso dà a Claude più tempo per valutare le alternative",
-      "active": "Attivo",
-      "tip": "Modalità di ragionamento più elevate richiedono più tempo ma forniscono un'analisi più approfondita"
-    },
-    "modes": {
-      "none": {
-        "name": "Standard",
-        "description": "Risposta Claude normale",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Pensa",
-        "description": "Ragionamento esteso base",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Pensa di più",
-        "description": "Valutazione più approfondita",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Pensa ancora",
-        "description": "Analisi profonda con alternative",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultrapensiero",
-        "description": "Budget massimo di ragionamento",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "Modalità ragionamento: {{mode}}"
-  },
   "providerSelection": {
     "title": "Scegli il tuo assistente AI",
     "description": "Seleziona un provider per iniziare una nuova conversazione",

src/i18n/locales/ja/chat.json

@@ -117,42 +117,6 @@
     "clickToChangeMode": "クリックで権限モードを変更（または入力欄でTab）",
     "showAllCommands": "すべてのコマンドを表示"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "思考モード",
-      "description": "拡張思考によりClaudeがより多くの選択肢を検討できます",
-      "active": "有効",
-      "tip": "高い思考モードは時間がかかりますが、より深い分析が得られます"
-    },
-    "modes": {
-      "none": {
-        "name": "標準",
-        "description": "通常のClaudeの応答",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Think",
-        "description": "基本的な拡張思考",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Think Hard",
-        "description": "より深い検討",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Think Harder",
-        "description": "代替案を含む深い分析",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultrathink",
-        "description": "最大限の思考予算",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "思考モード: {{mode}}"
-  },
   "providerSelection": {
     "title": "AIアシスタントを選択",
     "description": "新しい会話を始めるプロバイダーを選択してください",

src/i18n/locales/ko/chat.json

@@ -120,42 +120,6 @@
     "clearInput": "입력 지우기",
     "scrollToBottom": "맨 아래로 스크롤"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Thinking 모드",
-      "description": "확장된 thinking은 Claude에게 대안을 평가할 시간을 더 줍니다",
-      "active": "활성",
-      "tip": "높은 thinking 모드는 시간이 더 걸리지만 더 철저한 분석을 제공합니다"
-    },
-    "modes": {
-      "none": {
-        "name": "Standard",
-        "description": "일반 Claude 응답",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Think",
-        "description": "기본 확장 thinking",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Think Hard",
-        "description": "더 철저한 평가",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Think Harder",
-        "description": "대안을 포함한 심층 분석",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultrathink",
-        "description": "최대 thinking 예산",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "Thinking 모드: {{mode}}"
-  },
   "providerSelection": {
     "title": "AI 어시스턴트 선택",
     "description": "새 대화를 시작할 프로바이더를 선택하세요",

src/i18n/locales/ru/chat.json

@@ -138,42 +138,6 @@
     "clearInput": "Очистить ввод",
     "scrollToBottom": "Прокрутить вниз"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Режим размышления",
-      "description": "Расширенное размышление дает Claude больше времени для оценки альтернатив",
-      "active": "Активен",
-      "tip": "Более высокие режимы размышления занимают больше времени, но обеспечивают более тщательный анализ"
-    },
-    "modes": {
-      "none": {
-        "name": "Стандартный",
-        "description": "Обычный ответ Claude",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Думать",
-        "description": "Базовое расширенное размышление",
-        "prefix": "думать"
-      },
-      "thinkHard": {
-        "name": "Думать усердно",
-        "description": "Более тщательная оценка",
-        "prefix": "думать усердно"
-      },
-      "thinkHarder": {
-        "name": "Думать еще усерднее",
-        "description": "Глубокий анализ с альтернативами",
-        "prefix": "думать еще усерднее"
-      },
-      "ultrathink": {
-        "name": "Ультра-размышление",
-        "description": "Максимальный бюджет размышления",
-        "prefix": "ультра-размышление"
-      }
-    },
-    "buttonTitle": "Режим размышления: {{mode}}"
-  },
   "providerSelection": {
     "title": "Выберите вашего AI-ассистента",
     "description": "Выберите провайдера для начала нового разговора",

src/i18n/locales/tr/chat.json

@@ -138,42 +138,6 @@
     "clearInput": "Girdiyi temizle",
     "scrollToBottom": "En alta git"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "Düşünme Modu",
-      "description": "Uzatılmış düşünme, Claude'a alternatifleri değerlendirmek için daha fazla zaman verir",
-      "active": "Aktif",
-      "tip": "Daha yüksek düşünme modları daha fazla zaman alır ama daha kapsamlı analiz sağlar"
-    },
-    "modes": {
-      "none": {
-        "name": "Standart",
-        "description": "Normal Claude yanıtı",
-        "prefix": ""
-      },
-      "think": {
-        "name": "Düşün",
-        "description": "Temel uzatılmış düşünme",
-        "prefix": "think"
-      },
-      "thinkHard": {
-        "name": "Daha Fazla Düşün",
-        "description": "Daha kapsamlı değerlendirme",
-        "prefix": "think hard"
-      },
-      "thinkHarder": {
-        "name": "Derin Düşün",
-        "description": "Alternatiflerle derin analiz",
-        "prefix": "think harder"
-      },
-      "ultrathink": {
-        "name": "Ultra Düşün",
-        "description": "Maksimum düşünme bütçesi",
-        "prefix": "ultrathink"
-      }
-    },
-    "buttonTitle": "Düşünme modu: {{mode}}"
-  },
   "providerSelection": {
     "title": "AI Asistanını Seç",
     "description": "Yeni bir konuşma başlatmak için bir sağlayıcı seç",

src/i18n/locales/zh-CN/chat.json

@@ -120,42 +120,6 @@
     "clearInput": "清空输入",
     "scrollToBottom": "滚动到底部"
   },
-  "thinkingMode": {
-    "selector": {
-      "title": "思考模式",
-      "description": "扩展思考给 Claude 更多时间来评估替代方案",
-      "active": "激活",
-      "tip": "更高的思考模式需要更多时间，但提供更彻底的分析"
-    },
-    "modes": {
-      "none": {
-        "name": "标准",
-        "description": "常规 Claude 响应",
-        "prefix": ""
-      },
-      "think": {
-        "name": "思考",
-        "description": "基本扩展思考",
-        "prefix": "思考"
-      },
-      "thinkHard": {
-        "name": "深入思考",
-        "description": "更彻底的评估",
-        "prefix": "深入思考"
-      },
-      "thinkHarder": {
-        "name": "更深入思考",
-        "description": "考虑替代方案的深度分析",
-        "prefix": "更深入思考"
-      },
-      "ultrathink": {
-        "name": "超级思考",
-        "description": "最大思考预算",
-        "prefix": "超级思考"
-      }
-    },
-    "buttonTitle": "思考模式：{{mode}}"
-  },
   "providerSelection": {
     "title": "选择您的 AI 助手",
     "description": "选择一个供应商以开始新对话",