diff --git a/server/conversation.py b/server/conversation.py
index cdd4aa5..3b3a2f2 100644
--- a/server/conversation.py
+++ b/server/conversation.py
@@ -11,6 +11,7 @@ from collections import defaultdict, Counter, deque
 from typing import Dict, Any, Optional, List, Tuple
 
 from flask import Blueprint, request, jsonify, session
+from flask_socketio import emit
 from werkzeug.utils import secure_filename
 import zipfile
 
@@ -51,7 +52,7 @@ from utils.conversation_manager import ConversationManager
 from utils.api_client import DeepSeekClient
 
 from .auth_helpers import api_login_required, resolve_admin_policy, get_current_user_record, get_current_username
-from .context import with_terminal, get_gui_manager, get_upload_guard, build_upload_error_response, ensure_conversation_loaded, reset_system_state, get_user_resources, get_or_create_usage_tracker
+from .context import with_terminal, get_terminal_for_sid, get_gui_manager, get_upload_guard, build_upload_error_response, ensure_conversation_loaded, reset_system_state, get_user_resources, get_or_create_usage_tracker
 from .utils_common import (
     build_review_lines,
     debug_log,
@@ -73,6 +74,7 @@ from .state import (
     container_manager,
     get_last_active_ts,
 )
+from .usage import record_user_activity
 from .conversation_stats import (
     build_admin_dashboard_snapshot,
     compute_workspace_storage,
@@ -813,53 +815,82 @@ def handle_command(data):
         return
     record_user_activity(username)
     
+    result = _execute_system_command(terminal, command)
+    emit('command_result', result)
+
+
+def _execute_system_command(terminal: WebTerminal, command: str) -> Dict[str, Any]:
+    """执行系统命令，供 WebSocket 与 REST API 复用。"""
+    command = (command or '').strip()
     if command.startswith('/'):
         command = command[1:]
-    
+
     parts = command.split(maxsplit=1)
-    cmd = parts[0].lower()
-    
+    cmd = parts[0].lower() if parts else ''
+
     if cmd == "clear":
         terminal.context_manager.conversation_history.clear()
         if terminal.thinking_mode:
             terminal.api_client.start_new_task(force_deep=terminal.deep_thinking_mode)
-        emit('command_result', {
+        return {
             'command': cmd,
             'success': True,
             'message': '对话已清除'
-        })
-    elif cmd == "status":
+        }
+
+    if cmd == "status":
         status = terminal.get_status()
-        # 添加终端状态
         if terminal.terminal_manager:
-            terminal_status = terminal.terminal_manager.list_terminals()
-            status['terminals'] = terminal_status
-        emit('command_result', {
+            status['terminals'] = terminal.terminal_manager.list_terminals()
+        return {
             'command': cmd,
             'success': True,
             'data': status
-        })
-    elif cmd == "terminals":
-        # 列出终端会话
+        }
+
+    if cmd == "terminals":
         if terminal.terminal_manager:
-            result = terminal.terminal_manager.list_terminals()
-            emit('command_result', {
+            return {
                 'command': cmd,
                 'success': True,
-                'data': result
-            })
-        else:
-            emit('command_result', {
-                'command': cmd,
-                'success': False,
-                'message': '终端系统未初始化'
-            })
-    else:
-        emit('command_result', {
+                'data': terminal.terminal_manager.list_terminals()
+            }
+        return {
             'command': cmd,
             'success': False,
-            'message': f'未知命令: {cmd}'
-        })
+            'message': '终端系统未初始化'
+        }
+
+    return {
+        'command': cmd or command,
+        'success': False,
+        'message': f'未知命令: {cmd or command}'
+    }
+
+
+@conversation_bp.route('/api/commands', methods=['POST'])
+@api_login_required
+@with_terminal
+def execute_command_api(terminal: WebTerminal, workspace: UserWorkspace, username: str):
+    """通过 REST API 执行系统命令（用于无 WebSocket 前端）。"""
+    try:
+        payload = request.get_json(silent=True) or {}
+        command = (payload.get('command') or '').strip()
+        if not command:
+            return jsonify({
+                "success": False,
+                "message": "命令不能为空"
+            }), 400
+
+        record_user_activity(username)
+        result = _execute_system_command(terminal, command)
+        status_code = 200 if result.get('success') else 400
+        return jsonify(result), status_code
+    except Exception as exc:
+        return jsonify({
+            "success": False,
+            "message": f"命令执行异常: {exc}"
+        }), 500
 
 @conversation_bp.route('/api/conversations/<conversation_id>/token-statistics', methods=['GET'])
 @api_login_required
diff --git a/static/src/app.ts b/static/src/app.ts
index 0cfb11c..057c56f 100644
--- a/static/src/app.ts
+++ b/static/src/app.ts
@@ -174,7 +174,8 @@ const appOptions = {
                 monitorShowPendingReply: 'showPendingReply',
                 monitorPreviewTool: 'previewToolIntent',
                 monitorQueueTool: 'enqueueToolEvent',
-                monitorResolveTool: 'resolveToolResult'
+                monitorResolveTool: 'resolveToolResult',
+                forceUnlockMonitor: 'resetVisualState'
             }),
             ...mapActions(useSubAgentStore, {
                 subAgentFetch: 'fetchSubAgents',
diff --git a/static/src/app/lifecycle.ts b/static/src/app/lifecycle.ts
index 6fbfa3e..b72378e 100644
--- a/static/src/app/lifecycle.ts
+++ b/static/src/app/lifecycle.ts
@@ -16,7 +16,7 @@ export function created() {
             }
         },
         isConnected: () => this.isConnected,
-        getSocket: () => this.socket,
+        executeCommand: async (command) => this.executeSystemCommand(command, { showToast: false }),
         downloadResource: (url, filename) => this.downloadResource(url, filename)
     });
 }
@@ -28,11 +28,9 @@ export async function mounted() {
             console.warn('CSRF token 初始化失败:', err);
         });
     }
-    // 并行启动路由解析与实时连接，避免等待路由加载阻塞思考模式同步
+    // 并行启动路由解析与初始化数据，网页端不再依赖 WebSocket 初始化
     const routePromise = this.bootstrapRoute();
-    const socketPromise = this.initSocket();
     await routePromise;
-    await socketPromise;
     this.$nextTick(() => {
         this.ensureScrollListener();
         // 刷新后若无输出，自动解锁滚动锁定
diff --git a/static/src/app/methods/message.ts b/static/src/app/methods/message.ts
index 6b6b7c6..0997227 100644
--- a/static/src/app/methods/message.ts
+++ b/static/src/app/methods/message.ts
@@ -2,6 +2,105 @@
 import { debugLog } from './common';
 
 export const messageMethods = {
+    async executeSystemCommand(rawCommand, options = {}) {
+        const command = (rawCommand || '').toString().trim();
+        if (!command) {
+            return { success: false, message: '命令不能为空' };
+        }
+
+        if (!this.isConnected) {
+            if (options.showToast !== false) {
+                this.uiPushToast({
+                    title: '连接不可用',
+                    message: '当前无法执行命令，请稍后重试。',
+                    type: 'error'
+                });
+            }
+            return { success: false, message: '连接不可用' };
+        }
+
+        try {
+            const response = await fetch('/api/commands', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify({ command })
+            });
+
+            const payload = await response.json().catch(() => ({}));
+            const result = {
+                command: payload.command || command.replace(/^\//, ''),
+                success: !!payload.success,
+                message: payload.message,
+                data: payload.data
+            };
+            this.handleSystemCommandResult(result, options);
+            return result;
+        } catch (error) {
+            const message = error instanceof Error ? error.message : '命令执行失败';
+            const result = {
+                command: command.replace(/^\//, ''),
+                success: false,
+                message
+            };
+            this.handleSystemCommandResult(result, options);
+            return result;
+        }
+    },
+
+    handleSystemCommandResult(data, options = {}) {
+        const showToast = options.showToast !== false;
+        if (data.command === 'clear' && data.success) {
+            this.logMessageState?.('command_result-clear', { data });
+            this.messages = [];
+            this.logMessageState?.('command_result-cleared', { data });
+            this.currentMessageIndex = -1;
+            this.chatClearExpandedBlocks();
+            this.resetTokenStatistics();
+            if (showToast) {
+                this.uiPushToast({
+                    title: '已清除',
+                    message: data.message || '对话已清除',
+                    type: 'success'
+                });
+            }
+            return;
+        }
+
+        if (data.command === 'status' && data.success) {
+            this.addSystemMessage(`系统状态:\n${JSON.stringify(data.data || {}, null, 2)}`);
+            if (showToast) {
+                this.uiPushToast({
+                    title: '状态已更新',
+                    message: '已获取系统状态',
+                    type: 'success'
+                });
+            }
+            return;
+        }
+
+        if (!data.success) {
+            this.addSystemMessage(`命令失败: ${data.message || '未知错误'}`);
+            if (showToast) {
+                this.uiPushToast({
+                    title: '命令执行失败',
+                    message: data.message || '请稍后重试',
+                    type: 'error'
+                });
+            }
+            return;
+        }
+
+        if (showToast) {
+            this.uiPushToast({
+                title: '命令已执行',
+                message: data.command || '完成',
+                type: 'success'
+            });
+        }
+    },
+
     handleSendOrStop() {
         if (this.composerBusy) {
             this.stopTask();
@@ -79,9 +178,7 @@ export const messageMethods = {
         const message = text;
         const isCommand = hasText && !hasImages && !hasVideos && message.startsWith('/');
         if (isCommand) {
-            if (this.socket && this.isConnected) {
-                this.socket.emit('send_command', { command: message });
-            }
+            await this.executeSystemCommand(message, { showToast: false });
             this.inputClearMessage();
             this.inputClearSelectedImages();
             this.inputClearSelectedVideos();
@@ -177,12 +274,6 @@ export const messageMethods = {
             console.error('[Message] 取消任务失败:', error);
         }
 
-        // 兼容 WebSocket 模式
-        if (this.socket && this.isConnected) {
-            this.socket.emit('stop_task');
-            debugLog('发送停止请求（WebSocket）');
-        }
-
         // 立即清理前端状态，避免出现"不可输入也不可停止"的卡死状态
         this.clearPendingTools('user_stop');
         this.streamingMessage = false;
@@ -198,7 +289,7 @@ export const messageMethods = {
             cancelText: '取消'
         });
         if (confirmed) {
-            this.socket.emit('send_command', { command: '/clear' });
+            await this.executeSystemCommand('/clear', { showToast: false });
         }
     },
 
@@ -265,7 +356,7 @@ export const messageMethods = {
         }
     },
 
-    sendAutoUserMessage(text) {
+    async sendAutoUserMessage(text) {
         const message = (text || '').trim();
         if (!message || !this.isConnected) {
             return false;
@@ -277,12 +368,19 @@ export const messageMethods = {
         }
         this.taskInProgress = true;
         this.chatAddUserMessage(message, []);
-        if (this.socket) {
-            this.socket.emit('send_message', {
-                message,
-                images: [],
-                conversation_id: this.currentConversationId
+        try {
+            const { useTaskStore } = await import('../../stores/task');
+            const taskStore = useTaskStore();
+            await taskStore.createTask(message, [], [], this.currentConversationId);
+        } catch (error) {
+            console.error('[Message] 自动消息创建任务失败:', error);
+            this.uiPushToast({
+                title: '发送失败',
+                message: error?.message || '创建任务失败，请重试',
+                type: 'error'
             });
+            this.taskInProgress = false;
+            return false;
         }
         if (typeof this.monitorShowPendingReply === 'function') {
             this.monitorShowPendingReply();
diff --git a/static/src/app/methods/ui.ts b/static/src/app/methods/ui.ts
index d673de5..3bc9701 100644
--- a/static/src/app/methods/ui.ts
+++ b/static/src/app/methods/ui.ts
@@ -2,7 +2,6 @@
 import { usePolicyStore } from '../../stores/policy';
 import { useModelStore } from '../../stores/model';
 import { usePersonalizationStore } from '../../stores/personalization';
-import { initializeLegacySocket } from '../../composables/useLegacySocket';
 import { renderMarkdown as renderMarkdownHelper } from '../../composables/useMarkdownRenderer';
 import {
     scrollToBottom as scrollToBottomHelper,
@@ -608,7 +607,7 @@ export const uiMethods = {
                     : '建议使用 read 工具进行搜索或分段阅读。';
             if (this.reviewSendToModel) {
                 const message = `帮我继续这个任务，对话文件在 ${path}，文件长 ${count || '未知'} 字符，${suggestion} 请阅读文件了解后，不要直接继续工作，而是向我汇报你的理解，然后等我做出指示。`;
-                const sent = this.sendAutoUserMessage(message);
+                const sent = await this.sendAutoUserMessage(message);
                 if (sent) {
                     this.reviewDialogOpen = false;
                 }
@@ -1084,7 +1083,8 @@ export const uiMethods = {
     },
 
     async initSocket() {
-        await initializeLegacySocket(this);
+        // 主网页端已切换为 REST + 轮询模式，这里保留空实现用于兼容旧调用
+        this.socket = null;
     },
 
     openRealtimeTerminal() {
@@ -1098,7 +1098,12 @@ export const uiMethods = {
             debugLog('加载初始数据...');
 
             const statusResponse = await fetch('/api/status');
+            if (!statusResponse.ok) {
+                throw new Error(`状态接口请求失败: ${statusResponse.status}`);
+            }
             const statusData = await statusResponse.json();
+            this.isConnected = true;
+            this.socket = null;
             this.projectPath = statusData.project_path || '';
             this.agentVersion = statusData.version || this.agentVersion;
             this.thinkingMode = !!statusData.thinking_mode;
@@ -1186,6 +1191,7 @@ export const uiMethods = {
             debugLog('初始数据加载完成');
         } catch (error) {
             console.error('加载初始数据失败:', error);
+            this.isConnected = false;
         }
     },
 
diff --git a/static/src/stores/chatActions.ts b/static/src/stores/chatActions.ts
index 8cbb1f1..b4d5528 100644
--- a/static/src/stores/chatActions.ts
+++ b/static/src/stores/chatActions.ts
@@ -12,7 +12,7 @@ interface ChatActionDependencies {
   autoResizeInput: () => void;
   focusComposer: () => void;
   isConnected: () => boolean;
-  getSocket: () => { emit: (event: string, payload: any) => void } | null;
+  executeCommand: (command: string) => Promise<{ success?: boolean; message?: string } | void>;
   downloadResource: (url: string, filename: string) => Promise<void>;
 }
 
@@ -21,7 +21,7 @@ const defaultDependencies: ChatActionDependencies = {
   autoResizeInput: () => {},
   focusComposer: () => {},
   isConnected: () => false,
-  getSocket: () => null,
+  executeCommand: async () => ({ success: false, message: '命令通道不可用' }),
   downloadResource: async () => {}
 };
 
@@ -139,7 +139,7 @@ export const useChatActionStore = defineStore('chatActions', {
       });
       return true;
     },
-    runCommand(action: any) {
+    async runCommand(action: any) {
       const command = (action && (action.command || action.content))?.toString();
       if (!command) {
         this.dependencies.pushToast({
@@ -157,22 +157,30 @@ export const useChatActionStore = defineStore('chatActions', {
         });
         return false;
       }
-      const socket = this.dependencies.getSocket();
-      if (!socket || typeof socket.emit !== 'function') {
+      try {
+        const result = await this.dependencies.executeCommand(command);
+        if (result && result.success === false) {
+          this.dependencies.pushToast({
+            title: '命令执行失败',
+            message: result.message || '请稍后重试',
+            type: 'error'
+          });
+          return false;
+        }
         this.dependencies.pushToast({
-          title: '无法执行',
-          message: '命令通道不可用，请稍后重试。',
+          title: '命令已执行',
+          message: command,
+          type: 'success'
+        });
+        return true;
+      } catch (error) {
+        this.dependencies.pushToast({
+          title: '命令执行失败',
+          message: (error as Error)?.message || '请稍后重试',
           type: 'error'
         });
         return false;
       }
-      socket.emit('send_command', { command });
-      this.dependencies.pushToast({
-        title: '命令已发送',
-        message: command,
-        type: 'success'
-      });
-      return true;
     },
     async downloadActionAttachment(action: any) {
       if (!action || !action.path) {