diff --git a/.env.example b/.env.example
index 243a0c7..3ff2bcd 100644
--- a/.env.example
+++ b/.env.example
@@ -9,8 +9,16 @@ AGENT_THINKING_API_BASE_URL=
 AGENT_THINKING_API_KEY=
 AGENT_THINKING_MODEL_ID=
 
+# 对话标题生成模型（可选，留空则回退到基础推理模型）
+AGENT_TITLE_API_BASE_URL=
+AGENT_TITLE_API_KEY=
+AGENT_TITLE_MODEL_ID=
+
 # 第三方搜索（可选）
 AGENT_TAVILY_API_KEY=
+AGENT_TAVILY_API_KEY_2=
+AGENT_TAVILY_API_KEY_BACKUP=
+# 使用哪个 Tavily 环境变量请在 config/search.py 里改 TAVILY_API_KEY_ENV_NAME
 
 # 每轮最大响应 token（可选）
 AGENT_DEFAULT_RESPONSE_MAX_TOKENS=32768
diff --git a/config/__init__.py b/config/__init__.py
index cbd9467..5443ee3 100644
--- a/config/__init__.py
+++ b/config/__init__.py
@@ -35,6 +35,7 @@ def _load_dotenv():
 _load_dotenv()
 
 from . import api as _api
+from . import search as _search
 from . import paths as _paths
 from . import limits as _limits
 from . import terminal as _terminal
@@ -51,6 +52,7 @@ from . import custom_tools as _custom_tools
 from . import mcp as _mcp
 
 from .api import *
+from .search import *
 from .paths import *
 from .limits import *
 from .terminal import *
@@ -67,7 +69,7 @@ from .custom_tools import *
 from .mcp import *
 
 __all__ = []
-for module in (_api, _paths, _limits, _terminal, _conversation, _security, _ui, _memory, _ocr, _todo, _auth, _uploads, _sub_agent, _custom_tools, _mcp):
+for module in (_api, _search, _paths, _limits, _terminal, _conversation, _security, _ui, _memory, _ocr, _todo, _auth, _uploads, _sub_agent, _custom_tools, _mcp):
     __all__ += getattr(module, "__all__", [])
 
-del _api, _paths, _limits, _terminal, _conversation, _security, _ui, _memory, _ocr, _todo, _auth, _uploads, _sub_agent, _custom_tools, _mcp
+del _api, _search, _paths, _limits, _terminal, _conversation, _security, _ui, _memory, _ocr, _todo, _auth, _uploads, _sub_agent, _custom_tools, _mcp
diff --git a/config/api.py b/config/api.py
index d169cac..eeb86c6 100644
--- a/config/api.py
+++ b/config/api.py
@@ -19,8 +19,12 @@ THINKING_API_BASE_URL = _env("AGENT_THINKING_API_BASE_URL", API_BASE_URL)
 THINKING_API_KEY = _env("AGENT_THINKING_API_KEY", API_KEY)
 THINKING_MODEL_ID = _env("AGENT_THINKING_MODEL_ID", MODEL_ID)
 
-# Tavily 搜索（可选）
-TAVILY_API_KEY = _env("AGENT_TAVILY_API_KEY", "")
+from .search import TAVILY_API_KEY
+
+# 对话标题生成模型（可选，留空则回退到基础快速模型）
+TITLE_API_BASE_URL = _env("AGENT_TITLE_API_BASE_URL", API_BASE_URL)
+TITLE_API_KEY = _env("AGENT_TITLE_API_KEY", API_KEY)
+TITLE_MODEL_ID = _env("AGENT_TITLE_MODEL_ID", MODEL_ID)
 
 # 默认响应 token 限制
 DEFAULT_RESPONSE_MAX_TOKENS = int(os.environ.get("AGENT_DEFAULT_RESPONSE_MAX_TOKENS", "32768"))
@@ -29,9 +33,11 @@ __all__ = [
     "API_BASE_URL",
     "API_KEY",
     "MODEL_ID",
-    "TAVILY_API_KEY",
     "DEFAULT_RESPONSE_MAX_TOKENS",
     "THINKING_API_BASE_URL",
     "THINKING_API_KEY",
     "THINKING_MODEL_ID",
+    "TITLE_API_BASE_URL",
+    "TITLE_API_KEY",
+    "TITLE_MODEL_ID",
 ]
diff --git a/config/custom_models.json b/config/custom_models.json
index 4c7eb71..8b55112 100644
--- a/config/custom_models.json
+++ b/config/custom_models.json
@@ -12,7 +12,7 @@
       "max_output_tokens": 32768,
       "thinkmode_status": {
         "type": "param_toggle",
-        "model_id": "kimi-k2.5",
+        "model_id": "kimi-k2.6",
         "fast_extra_parameter": {
           "thinking": {
             "type": "disabled"
diff --git a/config/search.py b/config/search.py
new file mode 100644
index 0000000..ac30499
--- /dev/null
+++ b/config/search.py
@@ -0,0 +1,17 @@
+"""搜索相关配置。"""
+
+import os
+
+# 选择 Tavily 使用哪个环境变量中的密钥。
+# 默认保持兼容：仍使用 AGENT_TAVILY_API_KEY。
+# 你可以改成例如：AGENT_TAVILY_API_KEY_2 / AGENT_TAVILY_API_KEY_BACKUP
+TAVILY_API_KEY_ENV_NAME = "AGENT_TAVILY_API_KEY_2"
+
+# 实际生效的 Tavily 密钥
+TAVILY_API_KEY = os.environ.get(TAVILY_API_KEY_ENV_NAME, "")
+
+__all__ = [
+    "TAVILY_API_KEY_ENV_NAME",
+    "TAVILY_API_KEY",
+]
+
diff --git a/server/chat.py b/server/chat.py
index 4bc0157..91fd80b 100644
--- a/server/chat.py
+++ b/server/chat.py
@@ -81,27 +81,8 @@ def _dispatch_runtime_mode_notice(terminal: WebTerminal, username: str, text: st
     except Exception:
         pass
 
-    # 无运行任务时，直接写入当前会话并广播前端显示（来源固定为 notify）。
-    try:
-        if getattr(terminal, "context_manager", None):
-            terminal.context_manager.add_conversation("user", notice, metadata=metadata)
-    except Exception:
-        pass
-    try:
-        socketio.emit(
-            "user_message",
-            {
-                "message": notice,
-                "runtime_guidance": True,
-                "runtime_guidance_original": notice,
-                "runtime_mode_notice": True,
-                "message_source": "notify",
-                "conversation_id": getattr(getattr(terminal, "context_manager", None), "current_conversation_id", None),
-            },
-            room=f"user_{username}",
-        )
-    except Exception:
-        pass
+    # 无运行任务时静默处理：不写入对话，不向前端插入通知消息。
+    return
 
 @chat_bp.route('/api/thinking-mode', methods=['POST'])
 @api_login_required
diff --git a/server/chat_flow_helpers.py b/server/chat_flow_helpers.py
index b68e1f4..b44e057 100644
--- a/server/chat_flow_helpers.py
+++ b/server/chat_flow_helpers.py
@@ -5,6 +5,7 @@ import re
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 
+from config import TITLE_API_BASE_URL, TITLE_API_KEY, TITLE_MODEL_ID
 from core.web_terminal import WebTerminal
 from utils.api_client import DeepSeekClient
 
@@ -19,6 +20,15 @@ async def _generate_title_async(
         return None
 
     client = DeepSeekClient(thinking_mode=False, web_mode=True)
+    # 对话标题生成使用独立模型配置（可在 .env 中单独指定）
+    client.fast_api_config = {
+        "base_url": TITLE_API_BASE_URL,
+        "api_key": TITLE_API_KEY,
+        "model_id": TITLE_MODEL_ID,
+    }
+    client.api_base_url = TITLE_API_BASE_URL
+    client.api_key = TITLE_API_KEY
+    client.model_id = TITLE_MODEL_ID
     try:
         prompt_text = Path(title_prompt_path).read_text(encoding="utf-8")
     except Exception:
diff --git a/server/chat_flow_tool_loop.py b/server/chat_flow_tool_loop.py
index 5319be1..581a358 100644
--- a/server/chat_flow_tool_loop.py
+++ b/server/chat_flow_tool_loop.py
@@ -264,6 +264,7 @@ async def execute_tool_calls(*, web_terminal, tool_calls, sender, messages, clie
 
     # 执行每个工具
     pending_runtime_mode_notices: List[str] = []
+    last_completed_tool_call_id: Optional[str] = None
     for tool_call in tool_calls:
         # 检查停止标志
         client_stop_info = get_stop_flag(client_sid, username)
@@ -1168,6 +1169,7 @@ async def execute_tool_calls(*, web_terminal, tool_calls, sender, messages, clie
             "name": function_name,
             "content": tool_message_content
         })
+        last_completed_tool_call_id = tool_call_id
 
         if not pending_runtime_mode_notices:
             try:
@@ -1176,16 +1178,40 @@ async def execute_tool_calls(*, web_terminal, tool_calls, sender, messages, clie
             except Exception as exc:
                 debug_log(f"[RuntimeMode] 应用挂起模式变更失败: {exc}")
 
-        debug_log(f"[SubAgent] after tool={function_name} call_id={tool_call_id} -> poll updates")
-        await process_sub_agent_updates(messages=messages, inline=True, after_tool_call_id=tool_call_id, web_terminal=web_terminal, sender=sender, debug_log=debug_log, maybe_mark_failure_from_message=maybe_mark_failure_from_message)
-        debug_log(f"[BgCmdDebug] after tool={function_name} call_id={tool_call_id} -> poll background command updates (inline)")
-        await process_background_command_updates(messages=messages, inline=True, after_tool_call_id=tool_call_id, web_terminal=web_terminal, sender=sender, debug_log=debug_log, maybe_mark_failure_from_message=maybe_mark_failure_from_message)
-
         await asyncio.sleep(0.2)
 
         if tool_failed:
             mark_force_thinking(web_terminal, reason=f"{function_name}_failed")
 
+    # 子智能体/后台指令完成通知：必须等待同一轮全部 tool_call 都完成后再注入，
+    # 避免在 assistant.tool_calls 与未完成的 tool 结果之间插入 system 消息导致 API 报错。
+    if last_completed_tool_call_id:
+        debug_log(
+            f"[SubAgent] after all tools finished -> poll updates inline after_tool_call_id={last_completed_tool_call_id}"
+        )
+        await process_sub_agent_updates(
+            messages=messages,
+            inline=True,
+            after_tool_call_id=last_completed_tool_call_id,
+            web_terminal=web_terminal,
+            sender=sender,
+            debug_log=debug_log,
+            maybe_mark_failure_from_message=maybe_mark_failure_from_message,
+        )
+        debug_log(
+            "[BgCmdDebug] after all tools finished -> poll background command updates "
+            f"inline after_tool_call_id={last_completed_tool_call_id}"
+        )
+        await process_background_command_updates(
+            messages=messages,
+            inline=True,
+            after_tool_call_id=last_completed_tool_call_id,
+            web_terminal=web_terminal,
+            sender=sender,
+            debug_log=debug_log,
+            maybe_mark_failure_from_message=maybe_mark_failure_from_message,
+        )
+
     # 运行期模式通知：必须等待同一轮全部 tool_call 都完成后再注入，
     # 避免在 assistant.tool_calls 与对应 tool 消息之间插入 system 消息导致 API 报错。
     if pending_runtime_mode_notices:
diff --git a/static/src/app/methods/resources.ts b/static/src/app/methods/resources.ts
index 96247c2..5b8526f 100644
--- a/static/src/app/methods/resources.ts
+++ b/static/src/app/methods/resources.ts
@@ -160,12 +160,36 @@ export const resourceMethods = {
       this.executionModeDirectUntil = status.execution_mode.direct_until ?? null;
       this.executionModeEnabled =
         typeof status.execution_mode_enabled === 'boolean' ? status.execution_mode_enabled : true;
+      if (typeof this.scheduleExecutionModeExpirySync === 'function') {
+        this.scheduleExecutionModeExpirySync(this.executionModeDirectUntil);
+      }
       const currentMode = this.currentExecutionMode;
+      const parseDirectUntilMs = (value: any): number => {
+        if (!value) return 0;
+        if (typeof value === 'number') {
+          return value > 1e12 ? value : value * 1000;
+        }
+        if (typeof value === 'string') {
+          const parsed = Date.parse(value);
+          return Number.isNaN(parsed) ? 0 : parsed;
+        }
+        return 0;
+      };
+      const prevDirectUntilMs = parseDirectUntilMs(prevDirectUntil);
+      const fallbackLikelyByExpiry = !!prevDirectUntilMs && Date.now() >= prevDirectUntilMs - 1200;
       const directExpiredToSandbox =
-        prevExecutionMode === 'direct' &&
-        currentMode === 'sandbox' &&
-        !!prevDirectUntil;
+        prevExecutionMode === 'direct' && currentMode === 'sandbox' && fallbackLikelyByExpiry;
       if (directExpiredToSandbox) {
+        if (this.currentPermissionMode === 'unrestricted') {
+          if (typeof pendingModes.permission_mode === 'string' && pendingModes.permission_mode) {
+            this.currentPermissionMode = pendingModes.permission_mode;
+          } else {
+            this.currentPermissionMode = 'approval';
+          }
+        }
+        if (typeof this.fetchPermissionMode === 'function') {
+          Promise.resolve(this.fetchPermissionMode()).catch(() => {});
+        }
         try {
           if (this.executionModeAutoFallbackToastId) {
             this.uiDismissToast(this.executionModeAutoFallbackToastId);
@@ -173,7 +197,7 @@ export const resourceMethods = {
         } catch (_err) {}
         this.executionModeAutoFallbackToastId = this.uiPushToast({
           title: '执行环境已自动回退',
-          message: '完全访问权限已到期，当前已切换为沙箱执行环境。',
+          message: '完全访问权限已到期，已自动切回受限权限并切换为沙箱执行环境。',
           type: 'warning',
           duration: null
         });
diff --git a/static/src/app/methods/taskPolling.ts b/static/src/app/methods/taskPolling.ts
index ba49bc6..20f45f3 100644
--- a/static/src/app/methods/taskPolling.ts
+++ b/static/src/app/methods/taskPolling.ts
@@ -84,12 +84,7 @@ function isRuntimeModeNoticePayload(data: any): boolean {
     return false;
   }
   const meta = data.metadata || {};
-  return !!(
-    data.runtime_guidance ||
-    meta.runtime_guidance ||
-    data.runtime_mode_notice ||
-    meta.runtime_mode_notice
-  );
+  return !!(data.runtime_mode_notice || meta.runtime_mode_notice);
 }
 
 function resolveUserMessageSource(data: any): string {
@@ -1582,13 +1577,17 @@ export const taskPollingMethods = {
       this.taskInProgress = true;
       this.streamingMessage = false;
       this.stopRequested = false;
-    } else if (isRuntimeModeNotice) {
-      this.chatAddUserMessage(message, [], [], [], 'notify');
     } else {
-      debugLog('[TaskPolling] 跳过自动代发 user_message 渲染', {
-        messagePreview: message.slice(0, 80),
-        data
-      });
+      const source = resolveUserMessageSource(data);
+      // 仅在对话运行期间展示 runtime_mode_notice；其余自动消息按来源正常显示，
+      // 保持与后端历史重建一致（guidance/notify/sub_agent/background_command）。
+      if (isRuntimeModeNotice && !(this.taskInProgress || this.streamingMessage)) {
+        debugLog('[TaskPolling] 空闲态跳过 runtime_mode_notice 用户通知', {
+          messagePreview: message.slice(0, 80)
+        });
+      } else {
+        this.chatAddUserMessage(message, [], [], [], source);
+      }
     }
     if (data?.sub_agent_notice) {
       if (typeof data?.has_running_sub_agents === 'boolean') {
diff --git a/static/src/app/methods/ui.ts b/static/src/app/methods/ui.ts
index 94b27b4..5e42570 100644
--- a/static/src/app/methods/ui.ts
+++ b/static/src/app/methods/ui.ts
@@ -1204,6 +1204,7 @@ export const uiMethods = {
       this.executionModeDirectUntil = state.direct_until ?? null;
       this.executionModeTtlSeconds =
         typeof state.ttl_seconds === 'number' ? state.ttl_seconds : this.executionModeTtlSeconds;
+      this.scheduleExecutionModeExpirySync(this.executionModeDirectUntil);
       this.uiPushToast({
         title: '执行环境已更新',
         message: payload?.message || '已立即生效',
@@ -1245,6 +1246,8 @@ export const uiMethods = {
 
   async fetchExecutionMode() {
     try {
+      const prevExecutionMode = this.currentExecutionMode;
+      const prevDirectUntil = this.executionModeDirectUntil;
       const response = await fetch('/api/execution-mode');
       const payload = await response.json().catch(() => ({}));
       if (!response.ok || !payload?.success) {
@@ -1260,11 +1263,78 @@ export const uiMethods = {
       if (typeof state.ttl_seconds === 'number') {
         this.executionModeTtlSeconds = state.ttl_seconds;
       }
+      this.scheduleExecutionModeExpirySync(this.executionModeDirectUntil);
+      const parseDirectUntilMs = (value) => {
+        if (!value) return 0;
+        if (typeof value === 'number') {
+          return value > 1e12 ? value : value * 1000;
+        }
+        if (typeof value === 'string') {
+          const parsed = Date.parse(value);
+          return Number.isNaN(parsed) ? 0 : parsed;
+        }
+        return 0;
+      };
+      const prevDirectUntilMs = parseDirectUntilMs(prevDirectUntil);
+      const fallbackLikelyByExpiry = !!prevDirectUntilMs && Date.now() >= prevDirectUntilMs - 1200;
+      const directExpiredToSandbox =
+        prevExecutionMode === 'direct' &&
+        this.currentExecutionMode === 'sandbox' &&
+        fallbackLikelyByExpiry;
+      if (directExpiredToSandbox) {
+        if (this.currentPermissionMode === 'unrestricted') {
+          this.currentPermissionMode = 'approval';
+        }
+        Promise.resolve(this.fetchPermissionMode()).catch(() => {});
+        try {
+          if (this.executionModeAutoFallbackToastId) {
+            this.uiDismissToast(this.executionModeAutoFallbackToastId);
+          }
+        } catch (_err) {}
+        this.executionModeAutoFallbackToastId = this.uiPushToast({
+          title: '执行环境已自动回退',
+          message: '完全访问权限已到期，已自动切回受限权限并切换为沙箱执行环境。',
+          type: 'warning',
+          duration: null
+        });
+      }
     } catch (_error) {
       // ignore
     }
   },
 
+  clearExecutionModeExpirySyncTimer() {
+    if (this.executionModeExpirySyncTimer) {
+      clearTimeout(this.executionModeExpirySyncTimer);
+      this.executionModeExpirySyncTimer = null;
+    }
+  },
+
+  scheduleExecutionModeExpirySync(directUntil) {
+    this.clearExecutionModeExpirySyncTimer();
+    if (!this.executionModeEnabled || this.currentExecutionMode !== 'direct' || !directUntil) {
+      return;
+    }
+    let untilMs = 0;
+    if (typeof directUntil === 'number') {
+      untilMs = directUntil > 1e12 ? directUntil : directUntil * 1000;
+    } else if (typeof directUntil === 'string') {
+      const parsed = Date.parse(directUntil);
+      if (!Number.isNaN(parsed)) {
+        untilMs = parsed;
+      }
+    }
+    if (!untilMs) {
+      return;
+    }
+    const delayMs = Math.max(250, untilMs - Date.now() + 250);
+    this.executionModeExpirySyncTimer = window.setTimeout(async () => {
+      this.executionModeExpirySyncTimer = null;
+      await this.fetchExecutionMode();
+      await this.fetchPermissionMode();
+    }, delayMs);
+  },
+
   async openPathAuthorizationDialog() {
     if (!this.executionModeEnabled) return;
     this.pathAuthorizationDialogOpen = true;
diff --git a/static/src/app/state.ts b/static/src/app/state.ts
index b951795..d545a24 100644
--- a/static/src/app/state.ts
+++ b/static/src/app/state.ts
@@ -104,6 +104,7 @@ export function dataState() {
     executionModeDirectUntil: null,
     executionModeAutoFallbackToastId: null,
     executionModeTtlSeconds: 600,
+    executionModeExpirySyncTimer: null,
     pathAuthorizationDialogOpen: false,
     pathAuthorizationMode: 'writable',
     pathAuthorizationWritableDraft: '',
diff --git a/static/src/composables/useMarkdownRenderer.ts b/static/src/composables/useMarkdownRenderer.ts
index 64c1037..0e0017f 100644
--- a/static/src/composables/useMarkdownRenderer.ts
+++ b/static/src/composables/useMarkdownRenderer.ts
@@ -338,11 +338,32 @@ function normalizeShowTagsPlugin() {
   };
 }
 
+function wrapMarkdownTablesPlugin() {
+  return (tree: any) => {
+    visit(tree, 'element', (node: any, index: number | undefined, parent: any) => {
+      if (!node || node.tagName !== 'table' || !parent || typeof index !== 'number') return;
+      if (parent?.tagName === 'div' && Array.isArray(parent?.properties?.className)) {
+        const classes = parent.properties.className as string[];
+        if (classes.includes('md-table-scroll')) {
+          return;
+        }
+      }
+      parent.children[index] = {
+        type: 'element',
+        tagName: 'div',
+        properties: { className: ['md-table-scroll'], 'data-md-table-scroll': '1' },
+        children: [node]
+      };
+    });
+  };
+}
+
 const sanitizedSchema: Record<string, any> = {
   ...defaultSchema,
   tagNames: [...(defaultSchema.tagNames || []), 'show_html', 'show_image', 'show-html', 'show-image'],
   attributes: {
     ...(defaultSchema.attributes || {}),
+    div: [...((defaultSchema.attributes || {}).div || []), 'className', 'data-md-table-scroll'],
     show_html: ['ratio', 'js', 'data-encoded', 'data-partial'],
     show_image: ['src', 'alt', 'title', 'width', 'height'],
     'show-html': ['ratio', 'js', 'data-encoded', 'data-partial'],
@@ -357,6 +378,7 @@ const markdownProcessor = unified()
   .use(remarkRehype, { allowDangerousHtml: true })
   .use(rehypeRaw)
   .use(normalizeShowTagsPlugin)
+  .use(wrapMarkdownTablesPlugin)
   .use(rehypeSanitize, sanitizedSchema)
   .use(rehypeStringify, { allowDangerousHtml: false });
 
diff --git a/static/src/styles/components/chat/_chat-area.scss b/static/src/styles/components/chat/_chat-area.scss
index 75b7146..502d52c 100644
--- a/static/src/styles/components/chat/_chat-area.scss
+++ b/static/src/styles/components/chat/_chat-area.scss
@@ -74,6 +74,7 @@
 .messages-area {
     flex: 1;
     overflow-y: auto;
+    overflow-x: hidden;
     overflow-anchor: none;
     padding: 24px;
     padding-top: 30px;
@@ -412,6 +413,7 @@
 
 .message-block {
     margin-bottom: 24px;
+    min-width: 0;
 }
 
 .message-block.message-block--sub-agent-notice {
@@ -1084,6 +1086,9 @@ show-html:not([data-rendered="1"])[ratio="3:4"] { aspect-ratio: 3 / 4; }
 
 .text-output .text-content {
     padding: 0 20px 0 15px;
+    max-width: 100%;
+    min-width: 0;
+    overflow-x: hidden;
 }
 
 .text-output pre {
@@ -1093,7 +1098,8 @@ show-html:not([data-rendered="1"])[ratio="3:4"] { aspect-ratio: 3 / 4; }
     line-height: 1.55;
     overflow-x: auto;
     max-width: 100%;
-    scrollbar-gutter: stable both-edges;
+    scrollbar-gutter: stable;
+    box-sizing: border-box;
 }
 
 .text-output pre code {
@@ -1106,15 +1112,58 @@ show-html:not([data-rendered="1"])[ratio="3:4"] { aspect-ratio: 3 / 4; }
 }
 
 .text-output .text-content table {
-    width: 100%;
+    width: max-content;
+    min-width: 100%;
     border-collapse: collapse;
-    margin: 16px 0;
+    margin: 0;
     background: var(--theme-surface-soft);
+}
+
+.text-output .text-content .md-table-scroll,
+.text-output .text-content [data-md-table-scroll='1'] {
+    display: block;
+    width: 100%;
+    max-width: 100%;
+    margin: 16px 0;
+    overflow-x: auto;
+    overflow-y: hidden;
+    -webkit-overflow-scrolling: touch;
+    border: 1px solid var(--claude-border);
     border-radius: 12px;
-    overflow: hidden;
+    background: var(--theme-surface-soft);
     box-shadow: var(--theme-shadow-soft);
 }
 
+.text-output .text-content .md-table-scroll > table,
+.text-output .text-content [data-md-table-scroll='1'] > table {
+    margin: 0;
+}
+
+.text-output .text-content .md-table-scroll::-webkit-scrollbar,
+.text-output .text-content [data-md-table-scroll='1']::-webkit-scrollbar {
+    height: 10px;
+}
+
+.text-output .text-content .md-table-scroll::-webkit-scrollbar-track,
+.text-output .text-content [data-md-table-scroll='1']::-webkit-scrollbar-track {
+    background: color-mix(in srgb, var(--theme-surface-muted, #d1d5db) 70%, transparent);
+    border-radius: 999px;
+    margin: 0 8px 6px;
+}
+
+.text-output .text-content .md-table-scroll::-webkit-scrollbar-thumb,
+.text-output .text-content [data-md-table-scroll='1']::-webkit-scrollbar-thumb {
+    background: color-mix(in srgb, var(--claude-text-secondary, #6b7280) 55%, transparent);
+    border-radius: 999px;
+}
+
+.text-output .text-content .md-table-scroll,
+.text-output .text-content [data-md-table-scroll='1'] {
+    scrollbar-color: color-mix(in srgb, var(--claude-text-secondary, #6b7280) 55%, transparent)
+        color-mix(in srgb, var(--theme-surface-muted, #d1d5db) 70%, transparent);
+    scrollbar-width: thin;
+}
+
 .text-output .text-content thead {
     background: var(--theme-chip-bg);
 }
@@ -1251,7 +1300,8 @@ show-html:not([data-rendered="1"])[ratio="3:4"] { aspect-ratio: 3 / 4; }
     line-height: 1.55;
     overflow-x: auto;
     max-width: 100%;
-    scrollbar-gutter: stable both-edges;
+    scrollbar-gutter: stable;
+    box-sizing: border-box;
 }
 
 .code-block-wrapper pre code {
diff --git a/static/src/styles/components/panels/_left-panel.scss b/static/src/styles/components/panels/_left-panel.scss
index b802f3f..ddf2e50 100644
--- a/static/src/styles/components/panels/_left-panel.scss
+++ b/static/src/styles/components/panels/_left-panel.scss
@@ -396,10 +396,13 @@
 }
 
 .todo-panel {
+    flex: 1 1 auto;
+    min-height: 0;
     padding: 16px 20px 24px;
     display: flex;
     flex-direction: column;
     gap: 12px;
+    overflow-y: auto;
 }
 
 .sub-agent-panel {
@@ -412,6 +415,22 @@
     overflow-y: auto;
 }
 
+/* 左侧四个工作面板统一支持纵向滚动 */
+.file-tree,
+.todo-panel,
+.sub-agent-panel {
+    -webkit-overflow-scrolling: touch;
+    -ms-overflow-style: none;
+    scrollbar-width: none;
+}
+
+.file-tree::-webkit-scrollbar,
+.todo-panel::-webkit-scrollbar,
+.sub-agent-panel::-webkit-scrollbar {
+    width: 0;
+    height: 0;
+}
+
 .sub-agent-cards {
     display: flex;
     flex-direction: column;