diff --git a/backend/package/yuxi/agents/backends/sandbox/paths.py b/backend/package/yuxi/agents/backends/sandbox/paths.py
index e949414f..eafb85e9 100644
--- a/backend/package/yuxi/agents/backends/sandbox/paths.py
+++ b/backend/package/yuxi/agents/backends/sandbox/paths.py
@@ -4,13 +4,7 @@ import re
 from pathlib import Path
 
 from yuxi import config as conf
-from yuxi.utils.paths import (
-    VIRTUAL_PATH_PREFIX,
-    WORKSPACE_DIR_NAME,
-    OUTPUTS_DIR_NAME,
-    UPLOADS_DIR_NAME
-)
-
+from yuxi.utils.paths import OUTPUTS_DIR_NAME, UPLOADS_DIR_NAME, VIRTUAL_PATH_PREFIX, WORKSPACE_DIR_NAME
 
 _SAFE_THREAD_ID_RE = re.compile(r"^[A-Za-z0-9_-]+$")
 
diff --git a/backend/package/yuxi/agents/buildin/chatbot/prompt.py b/backend/package/yuxi/agents/buildin/chatbot/prompt.py
index 591b7bdc..a7370760 100644
--- a/backend/package/yuxi/agents/buildin/chatbot/prompt.py
+++ b/backend/package/yuxi/agents/buildin/chatbot/prompt.py
@@ -1,12 +1,11 @@
 from yuxi.utils.paths import (
-    VIRTUAL_PATH_PREFIX,
-    VIRTUAL_PATH_WORKSPACE,
+    VIRTUAL_KBS_PATH,
     VIRTUAL_PATH_OUTPUTS,
+    VIRTUAL_PATH_PREFIX,
     VIRTUAL_PATH_UPLOADS,
-    VIRTUAL_KBS_PATH
+    VIRTUAL_PATH_WORKSPACE,
 )
 
-
 PROMPT = f"""
 你是一个人工智能助手 “语析”，专门用来回答用户的问题。请根据用户提供的信息，尽可能详细地回答问题。
 如果你不确定答案，可以说你不知道，但请尽量提供相关的信息或建议。请保持礼貌和专业。
diff --git a/backend/package/yuxi/agents/buildin/deep_agent/prompt.py b/backend/package/yuxi/agents/buildin/deep_agent/prompt.py
index 983d3690..9e777de1 100644
--- a/backend/package/yuxi/agents/buildin/deep_agent/prompt.py
+++ b/backend/package/yuxi/agents/buildin/deep_agent/prompt.py
@@ -1,11 +1,10 @@
 from yuxi.utils.paths import (
-    VIRTUAL_PATH_PREFIX,
-    VIRTUAL_PATH_WORKSPACE,
     VIRTUAL_PATH_OUTPUTS,
+    VIRTUAL_PATH_PREFIX,
     VIRTUAL_PATH_UPLOADS,
+    VIRTUAL_PATH_WORKSPACE,
 )
 
-
 DEEP_PROMPT = f"""你是一位专家级研究员。你的工作是进行彻底的研究，然后撰写一份精美的报告。
 
 你应该做的第一件事是把原始的用户问题写入 `question.txt`，以便你有一个记录。
diff --git a/backend/package/yuxi/agents/toolkits/buildin/tools.py b/backend/package/yuxi/agents/toolkits/buildin/tools.py
index 3dfcfd98..fc946844 100644
--- a/backend/package/yuxi/agents/toolkits/buildin/tools.py
+++ b/backend/package/yuxi/agents/toolkits/buildin/tools.py
@@ -15,8 +15,8 @@ from yuxi import config, graph_base
 from yuxi.agents.toolkits.registry import ToolExtraMetadata, _all_tool_instances, _extra_registry, tool
 from yuxi.storage.minio import aupload_file_to_minio
 from yuxi.utils import logger
-from yuxi.utils.question_utils import normalize_questions
 from yuxi.utils.paths import VIRTUAL_PATH_OUTPUTS
+from yuxi.utils.question_utils import normalize_questions
 
 # Lazy initialization for TavilySearch (only when API key is available)
 _tavily_search_instance = None
@@ -67,9 +67,7 @@ if config.enable_web_search:
 class PresentArtifactsInput(BaseModel):
     """Expose artifact files to the frontend after the agent finishes."""
 
-    filepaths: list[str] = Field(
-        description=f"需要展示给用户的文件绝对路径列表，只允许位于 {VIRTUAL_PATH_OUTPUTS} 下"
-    )
+    filepaths: list[str] = Field(description=f"需要展示给用户的文件绝对路径列表，只允许位于 {VIRTUAL_PATH_OUTPUTS} 下")
 
 
 def _normalize_presented_artifact_path(filepath: str, runtime: ToolRuntime) -> str:
diff --git a/backend/package/yuxi/services/chat_service.py b/backend/package/yuxi/services/chat_service.py
index 30620350..e14cc38e 100644
--- a/backend/package/yuxi/services/chat_service.py
+++ b/backend/package/yuxi/services/chat_service.py
@@ -559,7 +559,6 @@ async def agent_chat(
         message_type=message_type,
     )
     trace_info: dict[str, Any] = {}
-    last_agent_state_signature = ""
 
     try:
         conv_repo = ConversationRepository(db)
@@ -986,6 +985,7 @@ async def stream_agent_resume(
         message_type="resume",
     )
     trace_info: dict[str, Any] = {}
+    last_agent_state_signature = ""
 
     stream_source = graph.astream(
         resume_command,
diff --git a/backend/package/yuxi/utils/paths.py b/backend/package/yuxi/utils/paths.py
index 79555e1c..8c91a0d9 100644
--- a/backend/package/yuxi/utils/paths.py
+++ b/backend/package/yuxi/utils/paths.py
@@ -1,4 +1,5 @@
 from pathlib import Path
+
 from yuxi import config
 
 VIRTUAL_PATH_PREFIX = config.sandbox_virtual_path_prefix
diff --git a/web/src/assets/css/base.css b/web/src/assets/css/base.css
index 7178a299..1c623b2a 100644
--- a/web/src/assets/css/base.css
+++ b/web/src/assets/css/base.css
@@ -106,7 +106,6 @@
   --bg-sider: var(--main-5);
   --color-text: var(--c-black);
 
-
   --light-98: rgba(255, 255, 255, 0.98);
   --light-95: rgba(255, 255, 255, 0.95);
   --light-90: rgba(255, 255, 255, 0.9);
@@ -133,7 +132,6 @@
   --dark-5: rgba(0, 0, 0, 0.05);
   --dark-0: rgba(0, 0, 0, 0);
 
-
   /* Shadow System - 阴影系统 */
   --shadow-0: rgba(0, 0, 0, 0.02);
   --shadow-1: rgba(0, 0, 0, 0.05);
diff --git a/web/src/assets/css/base.dark.css b/web/src/assets/css/base.dark.css
index c9d94e8f..0d7e09c3 100644
--- a/web/src/assets/css/base.dark.css
+++ b/web/src/assets/css/base.dark.css
@@ -98,7 +98,6 @@
   --bg-sider: #141414;
   --color-text: #ffffff;
 
-
   --dark-98: rgba(255, 255, 255, 0.98);
   --dark-95: rgba(255, 255, 255, 0.95);
   --dark-90: rgba(255, 255, 255, 0.9);
diff --git a/web/src/components/AgentFilePreview.vue b/web/src/components/AgentFilePreview.vue
index b62013a2..8eab4a69 100644
--- a/web/src/components/AgentFilePreview.vue
+++ b/web/src/components/AgentFilePreview.vue
@@ -140,7 +140,11 @@
               </div>
             </template>
             <template v-else-if="file?.previewType === 'pdf' && file?.previewUrl">
-              <iframe :src="file.previewUrl" class="pdf-preview fullscreen-embed-preview" :title="filePath" />
+              <iframe
+                :src="file.previewUrl"
+                class="pdf-preview fullscreen-embed-preview"
+                :title="filePath"
+              />
             </template>
             <template v-else-if="isHtmlFile && htmlPreviewMode === 'render'">
               <iframe
@@ -305,14 +309,11 @@ watch(
   }
 )
 
-watch(
-  [() => props.filePath, () => props.file?.previewType, () => props.file?.content],
-  () => {
-    if (isHtmlFile.value) {
-      htmlPreviewRenderKey.value += 1
-    }
+watch([() => props.filePath, () => props.file?.previewType, () => props.file?.content], () => {
+  if (isHtmlFile.value) {
+    htmlPreviewRenderKey.value += 1
   }
-)
+})
 
 watch(fullscreenPreviewVisible, (visible) => {
   document.body.style.overflow = visible ? 'hidden' : ''
@@ -490,7 +491,7 @@ onUnmounted(() => {
   min-height: calc(80vh - 40px);
   border: none;
   border-radius: 0px;
-  background: #fff;  // HTML 内容通常需要白色背景以保证可读性
+  background: #fff; // HTML 内容通常需要白色背景以保证可读性
 }
 
 .unsupported-preview {
diff --git a/web/src/components/AgentInputArea.vue b/web/src/components/AgentInputArea.vue
index 3b0c4d6a..fbddd9a1 100644
--- a/web/src/components/AgentInputArea.vue
+++ b/web/src/components/AgentInputArea.vue
@@ -43,7 +43,9 @@
               <div class="todo-popover-header">
                 <div class="todo-popover-title-wrap">
                   <span class="todo-popover-title">当前任务</span>
-                  <span class="todo-popover-summary">{{ completedTodoCount }}/{{ totalTodoCount }} 已完成</span>
+                  <span class="todo-popover-summary"
+                    >{{ completedTodoCount }}/{{ totalTodoCount }} 已完成</span
+                  >
                 </div>
                 <span class="todo-popover-progress">{{ todoProgress }}%</span>
               </div>
@@ -53,7 +55,11 @@
               </div>
 
               <div class="todo-popover-list">
-                <div v-for="(todo, index) in todos" :key="`${todo.content}-${index}`" class="todo-item">
+                <div
+                  v-for="(todo, index) in todos"
+                  :key="`${todo.content}-${index}`"
+                  class="todo-item"
+                >
                   <div class="todo-item-icon" :class="todo.status || 'unknown'">
                     <CheckCircleOutlined v-if="todo.status === 'completed'" />
                     <SyncOutlined v-else-if="todo.status === 'in_progress'" spin />
@@ -140,7 +146,9 @@ const todoPopoverOpen = ref(false)
 const placeholder = '问点什么？使用 @ 可以提及哦~'
 
 const totalTodoCount = computed(() => props.todos.length)
-const completedTodoCount = computed(() => props.todos.filter((todo) => todo?.status === 'completed').length)
+const completedTodoCount = computed(
+  () => props.todos.filter((todo) => todo?.status === 'completed').length
+)
 const showTodoEntry = computed(() => props.hasActiveThread && totalTodoCount.value > 0)
 const todoProgress = computed(() => {
   if (!totalTodoCount.value) return 0
@@ -284,8 +292,7 @@ const getTodoStatusLabel = (status) => {
 .todo-popover-card {
   width: min(300px, calc(100vw - 32px));
   padding: 14px;
-  background:
-    linear-gradient(180deg, var(--gray-50) 0%, var(--gray-50) 100%);
+  background: linear-gradient(180deg, var(--gray-50) 0%, var(--gray-50) 100%);
 }
 
 .todo-popover-header {
diff --git a/web/src/components/SettingsModal.vue b/web/src/components/SettingsModal.vue
index 8f12489f..4f0c1070 100644
--- a/web/src/components/SettingsModal.vue
+++ b/web/src/components/SettingsModal.vue
@@ -72,7 +72,11 @@
               <Star :size="12" />
               <span>支持项目</span>
             </div>
-            <button class="star-card-close lucide-icon-btn" @click="dismissStarCard" aria-label="关闭 Star 提示">
+            <button
+              class="star-card-close lucide-icon-btn"
+              @click="dismissStarCard"
+              aria-label="关闭 Star 提示"
+            >
               <X :size="14" />
             </button>
           </div>
@@ -171,7 +175,16 @@
 <script setup>
 import { computed, onMounted, ref, watch } from 'vue'
 import { useUserStore } from '@/stores/user'
-import { ExternalLink, Key as KeyIcon, Settings, SquareCode, Star, User, Users, X } from 'lucide-vue-next'
+import {
+  ExternalLink,
+  Key as KeyIcon,
+  Settings,
+  SquareCode,
+  Star,
+  User,
+  Users,
+  X
+} from 'lucide-vue-next'
 import BasicSettingsSection from '@/components/BasicSettingsSection.vue'
 import ModelProvidersComponent from '@/components/ModelProvidersComponent.vue'
 import UserManagementComponent from '@/components/UserManagementComponent.vue'
diff --git a/web/src/utils/agentPanelAutoOpen.js b/web/src/utils/agentPanelAutoOpen.js
index 4b2d56ea..3a285c4a 100644
--- a/web/src/utils/agentPanelAutoOpen.js
+++ b/web/src/utils/agentPanelAutoOpen.js
@@ -15,7 +15,4 @@ export const shouldAutoOpenAgentPanel = (threadFiles) => {
   return threadFiles.some((item) => item?.is_dir !== true && isTrackedPanelFilePath(item?.path))
 }
 
-export {
-  USER_DATA_OUTPUTS_PREFIX,
-  USER_DATA_UPLOADS_PREFIX
-}
\ No newline at end of file
+export { USER_DATA_OUTPUTS_PREFIX, USER_DATA_UPLOADS_PREFIX }