diff --git a/src/renderer/src/components/NewThreadMock.vue b/src/renderer/src/components/NewThreadMock.vue
index 6b6a112f7..55862f267 100644
--- a/src/renderer/src/components/NewThreadMock.vue
+++ b/src/renderer/src/components/NewThreadMock.vue
@@ -9,7 +9,9 @@
         </div>
 
         <!-- Heading -->
-        <h1 class="text-3xl font-semibold text-foreground mb-4">Build and explore</h1>
+        <h1 class="text-3xl font-semibold text-foreground mb-4">
+          {{ t('chat.newThread.title') }}
+        </h1>
 
         <!-- Project selector -->
         <DropdownMenu>
@@ -25,7 +27,7 @@
             </Button>
           </DropdownMenuTrigger>
           <DropdownMenuContent align="center" class="min-w-[200px]">
-            <DropdownMenuLabel class="text-xs">Recent Projects</DropdownMenuLabel>
+            <DropdownMenuLabel class="text-xs">{{ t('common.project.recent') }}</DropdownMenuLabel>
             <DropdownMenuItem
               v-for="project in recentProjects"
               :key="project.path"
@@ -41,7 +43,7 @@
             <DropdownMenuSeparator />
             <DropdownMenuItem class="gap-2 text-xs py-1.5 px-2" @click="selectCustomProject">
               <Icon icon="lucide:folder-open" class="w-3.5 h-3.5 text-muted-foreground" />
-              <span>Open folder...</span>
+              <span>{{ t('common.project.openFolder') }}</span>
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -62,6 +64,7 @@
 
 <script setup lang="ts">
 import { ref } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { TooltipProvider } from '@shadcn/components/ui/tooltip'
 import { Button } from '@shadcn/components/ui/button'
 import {
@@ -77,6 +80,8 @@ import MockInputBox from './mock/MockInputBox.vue'
 import MockInputToolbar from './mock/MockInputToolbar.vue'
 import MockStatusBar from './mock/MockStatusBar.vue'
 
+const { t } = useI18n()
+
 const recentProjects = [
   { name: 'deepchat', path: '~/Code/deepchat' },
   { name: 'api-server', path: '~/Code/api-server' },
diff --git a/src/renderer/src/components/WindowSideBar.vue b/src/renderer/src/components/WindowSideBar.vue
index 8d4352f93..6db94e8a4 100644
--- a/src/renderer/src/components/WindowSideBar.vue
+++ b/src/renderer/src/components/WindowSideBar.vue
@@ -21,7 +21,7 @@
               <Icon icon="lucide:layers" class="w-4 h-4 text-foreground/80" />
             </Button>
           </TooltipTrigger>
-          <TooltipContent side="right">All Agents</TooltipContent>
+          <TooltipContent side="right">{{ t('chat.sidebar.allAgents') }}</TooltipContent>
         </Tooltip>
 
         <div class="w-5 h-px bg-border my-1"></div>
@@ -65,7 +65,7 @@
             </Button>
           </TooltipTrigger>
           <TooltipContent side="right">{{
-            collapsed ? 'Expand sidebar' : 'Collapse sidebar'
+            collapsed ? t('chat.sidebar.expandSidebar') : t('chat.sidebar.collapseSidebar')
           }}</TooltipContent>
         </Tooltip>
 
@@ -88,7 +88,7 @@
         <!-- Header -->
         <div class="flex items-center justify-between px-3 h-10 shrink-0">
           <span class="text-sm font-medium text-foreground truncate">
-            {{ agentStore.selectedAgentName }}
+            {{ selectedAgentName }}
           </span>
           <div class="flex items-center gap-0.5">
             <Tooltip>
@@ -106,7 +106,9 @@
                 </button>
               </TooltipTrigger>
               <TooltipContent>{{
-                sessionStore.groupMode === 'project' ? 'Group by date' : 'Group by project'
+                sessionStore.groupMode === 'project'
+                  ? t('chat.sidebar.groupByDate')
+                  : t('chat.sidebar.groupByProject')
               }}</TooltipContent>
             </Tooltip>
             <Tooltip>
@@ -118,7 +120,7 @@
                   <Icon icon="lucide:plus" class="w-4 h-4" />
                 </button>
               </TooltipTrigger>
-              <TooltipContent>New Chat</TooltipContent>
+              <TooltipContent>{{ t('common.newChat') }}</TooltipContent>
             </Tooltip>
           </div>
         </div>
@@ -157,13 +159,17 @@
             class="flex flex-col items-center justify-center h-full px-4 text-center"
           >
             <Icon icon="lucide:message-square-plus" class="w-8 h-8 text-muted-foreground/40 mb-3" />
-            <p class="text-sm text-muted-foreground/60">No conversations yet</p>
-            <p class="text-xs text-muted-foreground/40 mt-1">Start a new chat to begin</p>
+            <p class="text-sm text-muted-foreground/60">{{ t('chat.sidebar.emptyTitle') }}</p>
+            <p class="text-xs text-muted-foreground/40 mt-1">
+              {{ t('chat.sidebar.emptyDescription') }}
+            </p>
           </div>
 
           <template v-for="group in filteredGroups" :key="group.label">
             <div class="px-1.5 pt-3 pb-1">
-              <span class="text-xs font-medium text-muted-foreground">{{ group.label }}</span>
+              <span class="text-xs font-medium text-muted-foreground">{{
+                group.labelKey ? t(group.labelKey) : group.label
+              }}</span>
             </div>
             <button
               v-for="session in group.sessions"
@@ -220,6 +226,9 @@ const sessionStore = useSessionStore()
 const collapsed = ref(false)
 let agentSwitchSeq = 0
 let agentSwitchQueue: Promise<void> = Promise.resolve()
+const selectedAgentName = computed(
+  () => agentStore.selectedAgent?.name ?? t('chat.sidebar.allAgents')
+)
 
 const pinnedSessions = computed(() => sessionStore.getPinnedSessions(agentStore.selectedAgentId))
 const filteredGroups = computed(() => sessionStore.getFilteredGroups(agentStore.selectedAgentId))
diff --git a/src/renderer/src/components/chat/ChatInputBox.vue b/src/renderer/src/components/chat/ChatInputBox.vue
index 095b4a804..708f2e330 100644
--- a/src/renderer/src/components/chat/ChatInputBox.vue
+++ b/src/renderer/src/components/chat/ChatInputBox.vue
@@ -106,7 +106,7 @@ const props = withDefaults(
   }>(),
   {
     modelValue: '',
-    placeholder: 'Ask DeepChat anything, @ to mention files, / for commands',
+    placeholder: '',
     sessionId: null,
     workspacePath: null,
     isAcpSession: false,
@@ -127,6 +127,7 @@ const emit = defineEmits<{
 const isComposing = ref(false)
 const fileInput = ref<HTMLInputElement>()
 const { t } = useI18n()
+const resolvedPlaceholder = computed(() => props.placeholder?.trim() || t('chat.input.placeholder'))
 let editorInstance: Editor | null = null
 const getEditor = () => editorInstance
 const conversationId = computed(() => props.sessionId)
@@ -204,7 +205,7 @@ const editor = new VueEditor({
       deleteTriggerWithBackspace: true
     }),
     Placeholder.configure({
-      placeholder: props.placeholder
+      placeholder: () => resolvedPlaceholder.value
     }),
     HardBreak.extend({
       addKeyboardShortcuts() {
@@ -250,6 +251,10 @@ watch(
   { deep: true, immediate: true }
 )
 
+watch(resolvedPlaceholder, () => {
+  editor.view.updateState(editor.state)
+})
+
 watch(
   () => [...skillsData.pendingSkills.value],
   (pendingSkills) => {
diff --git a/src/renderer/src/components/chat/ChatStatusBar.vue b/src/renderer/src/components/chat/ChatStatusBar.vue
index 4216b1999..745749b6b 100644
--- a/src/renderer/src/components/chat/ChatStatusBar.vue
+++ b/src/renderer/src/components/chat/ChatStatusBar.vue
@@ -108,14 +108,14 @@
               :disabled="permissionMode === 'full_access'"
               @click="selectPermissionMode('full_access')"
             >
-              Full access
+              {{ t('chat.permissionMode.fullAccess') }}
             </DropdownMenuItem>
             <DropdownMenuItem
               class="text-xs py-1.5 px-2"
               :disabled="permissionMode === 'default'"
               @click="selectPermissionMode('default')"
             >
-              Default permissions
+              {{ t('chat.permissionMode.default') }}
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -127,7 +127,7 @@
           :disabled="true"
         >
           <Icon icon="lucide:shield" class="w-3.5 h-3.5" />
-          <span>Full access</span>
+          <span>{{ t('chat.permissionMode.fullAccess') }}</span>
         </Button>
       </div>
     </div>
@@ -1136,7 +1136,9 @@ const currentEffortLabel = computed(() => {
 })
 
 const permissionModeLabel = computed(() =>
-  permissionMode.value === 'default' ? 'Default permissions' : 'Full access'
+  permissionMode.value === 'default'
+    ? t('chat.permissionMode.default')
+    : t('chat.permissionMode.fullAccess')
 )
 
 const handleDocumentMouseDown = (event: MouseEvent) => {
diff --git a/src/renderer/src/components/mock/MockInputBox.vue b/src/renderer/src/components/mock/MockInputBox.vue
index 133b6775f..7e2fb8f50 100644
--- a/src/renderer/src/components/mock/MockInputBox.vue
+++ b/src/renderer/src/components/mock/MockInputBox.vue
@@ -3,7 +3,7 @@
     class="w-full max-w-2xl rounded-xl border bg-card/30 backdrop-blur-lg shadow-sm overflow-hidden"
   >
     <Textarea
-      placeholder="Ask DeepChat anything, @ to mention files, / for commands"
+      :placeholder="t('chat.input.placeholder')"
       class="min-h-[80px] resize-none border-0 shadow-none focus-visible:ring-0 focus-visible:border-0 bg-transparent! dark:bg-transparent placeholder:text-muted-foreground px-4 pt-4 pb-2 text-sm"
       :model-value="''"
     />
@@ -14,4 +14,7 @@
 
 <script setup lang="ts">
 import { Textarea } from '@shadcn/components/ui/textarea'
+import { useI18n } from 'vue-i18n'
+
+const { t } = useI18n()
 </script>
diff --git a/src/renderer/src/components/mock/MockStatusBar.vue b/src/renderer/src/components/mock/MockStatusBar.vue
index b032dfefc..017b0b70e 100644
--- a/src/renderer/src/components/mock/MockStatusBar.vue
+++ b/src/renderer/src/components/mock/MockStatusBar.vue
@@ -69,14 +69,18 @@
           class="h-6 px-2 gap-1.5 text-xs text-muted-foreground hover:text-foreground backdrop-blur-lg"
         >
           <Icon icon="lucide:shield" class="w-3.5 h-3.5" />
-          <span>Default permissions</span>
+          <span>{{ t('chat.permissionMode.default') }}</span>
           <Icon icon="lucide:chevron-down" class="w-3 h-3" />
         </Button>
       </DropdownMenuTrigger>
       <DropdownMenuContent align="end" class="min-w-0">
-        <DropdownMenuItem class="text-xs py-1.5 px-2">Default permissions</DropdownMenuItem>
+        <DropdownMenuItem class="text-xs py-1.5 px-2">{{
+          t('chat.permissionMode.default')
+        }}</DropdownMenuItem>
         <DropdownMenuItem class="text-xs py-1.5 px-2">Restricted</DropdownMenuItem>
-        <DropdownMenuItem class="text-xs py-1.5 px-2">Full access</DropdownMenuItem>
+        <DropdownMenuItem class="text-xs py-1.5 px-2">{{
+          t('chat.permissionMode.fullAccess')
+        }}</DropdownMenuItem>
       </DropdownMenuContent>
     </DropdownMenu>
   </div>
@@ -91,8 +95,10 @@ import {
   DropdownMenuTrigger
 } from '@shadcn/components/ui/dropdown-menu'
 import { Icon } from '@iconify/vue'
+import { useI18n } from 'vue-i18n'
 import ModelIcon from '../icons/ModelIcon.vue'
 import { useThemeStore } from '@/stores/theme'
 
 const themeStore = useThemeStore()
+const { t } = useI18n()
 </script>
diff --git a/src/renderer/src/i18n/da-DK/chat.json b/src/renderer/src/i18n/da-DK/chat.json
index cc4dce7a7..5c298e734 100644
--- a/src/renderer/src/i18n/da-DK/chat.json
+++ b/src/renderer/src/i18n/da-DK/chat.json
@@ -19,7 +19,7 @@
     "historyPlaceholder": "(Udfyld med Tab)",
     "inputArea": "Indtastningsområde",
     "pasteFiles": "Understøtter kopiering og indsættelse af filer",
-    "placeholder": "Spørg om noget? Du kan referere til værktøjer, filer, ressourcer osv. ved at bruge {'@'}.",
+    "placeholder": "Spørg DeepChat om hvad som helst, @ for at nævne filer, / for kommandoer",
     "promptFilesAdded": "Prompt-filen er blevet tilføjet",
     "promptFilesAddedDesc": "{count} filer er blevet tilføjet successfully",
     "promptFilesError": "Filbehandlingsfejl",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "Komprimerer automatisk kontekst...",
     "compacted": "Konteksten blev automatisk komprimeret"
+  },
+  "newThread": {
+    "title": "Byg og udforsk"
+  },
+  "permissionMode": {
+    "default": "Standardtilladelser",
+    "fullAccess": "Fuld adgang"
+  },
+  "sidebar": {
+    "allAgents": "Alle agenter",
+    "expandSidebar": "Udvid sidepanelet",
+    "collapseSidebar": "Skjul sidepanelet",
+    "groupByDate": "Gruppér efter dato",
+    "groupByProject": "Gruppér efter projekt",
+    "emptyTitle": "Ingen samtaler endnu",
+    "emptyDescription": "Start en ny samtale for at komme i gang"
   }
 }
diff --git a/src/renderer/src/i18n/da-DK/common.json b/src/renderer/src/i18n/da-DK/common.json
index d53dbaf09..7795af12c 100644
--- a/src/renderer/src/i18n/da-DK/common.json
+++ b/src/renderer/src/i18n/da-DK/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} byte"
+  },
+  "time": {
+    "today": "I dag",
+    "yesterday": "I går",
+    "lastWeek": "Sidste uge",
+    "older": "Ældre"
+  },
+  "project": {
+    "select": "Vælg projekt",
+    "none": "Intet projekt",
+    "recent": "Seneste projekter",
+    "openFolder": "Åbn mappe..."
   }
 }
diff --git a/src/renderer/src/i18n/da-DK/index.ts b/src/renderer/src/i18n/da-DK/index.ts
index 92d0c4646..ad4fc3d5a 100644
--- a/src/renderer/src/i18n/da-DK/index.ts
+++ b/src/renderer/src/i18n/da-DK/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -48,7 +47,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/da-DK/newThread.json b/src/renderer/src/i18n/da-DK/newThread.json
deleted file mode 100644
index d71eb12d6..000000000
--- a/src/renderer/src/i18n/da-DK/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "Hej med dig!",
-  "prompt": "Hvad tænker du på?"
-}
diff --git a/src/renderer/src/i18n/en-US/chat.json b/src/renderer/src/i18n/en-US/chat.json
index eed69d43f..f5e42647a 100644
--- a/src/renderer/src/i18n/en-US/chat.json
+++ b/src/renderer/src/i18n/en-US/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "Ask something? You can quote tools, files, resources via {'@'}...",
+    "placeholder": "Ask DeepChat anything, @ to mention files, / for commands",
     "fileArea": "File Area",
     "inputArea": "Input Area",
     "functionSwitch": "Function Switch",
@@ -210,5 +210,21 @@
         "aborted": "Aborted"
       }
     }
+  },
+  "newThread": {
+    "title": "Build and explore"
+  },
+  "permissionMode": {
+    "default": "Default permissions",
+    "fullAccess": "Full access"
+  },
+  "sidebar": {
+    "allAgents": "All Agents",
+    "expandSidebar": "Expand sidebar",
+    "collapseSidebar": "Collapse sidebar",
+    "groupByDate": "Group by date",
+    "groupByProject": "Group by project",
+    "emptyTitle": "No conversations yet",
+    "emptyDescription": "Start a new chat to begin"
   }
 }
diff --git a/src/renderer/src/i18n/en-US/common.json b/src/renderer/src/i18n/en-US/common.json
index ebd522fde..ed1612745 100644
--- a/src/renderer/src/i18n/en-US/common.json
+++ b/src/renderer/src/i18n/en-US/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} bytes"
+  },
+  "time": {
+    "today": "Today",
+    "yesterday": "Yesterday",
+    "lastWeek": "Last week",
+    "older": "Older"
+  },
+  "project": {
+    "select": "Select project",
+    "none": "No project",
+    "recent": "Recent projects",
+    "openFolder": "Open folder..."
   }
 }
diff --git a/src/renderer/src/i18n/en-US/index.ts b/src/renderer/src/i18n/en-US/index.ts
index 9210a456d..e6102ac6f 100644
--- a/src/renderer/src/i18n/en-US/index.ts
+++ b/src/renderer/src/i18n/en-US/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -48,7 +47,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/en-US/newThread.json b/src/renderer/src/i18n/en-US/newThread.json
deleted file mode 100644
index 39cd6888c..000000000
--- a/src/renderer/src/i18n/en-US/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "Hello there!",
-  "prompt": "What's on your mind?"
-}
diff --git a/src/renderer/src/i18n/fa-IR/chat.json b/src/renderer/src/i18n/fa-IR/chat.json
index c460884e1..9d52ee743 100644
--- a/src/renderer/src/i18n/fa-IR/chat.json
+++ b/src/renderer/src/i18n/fa-IR/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "چیزی بپرسید؟ می‌توانید با {'@'} به ابزارها، پرونده‌ها، منابع ارجاع دهید...",
+    "placeholder": "هر چیزی از DeepChat بپرسید، با @ به فایل‌ها اشاره کنید و با / از دستورها استفاده کنید",
     "fileArea": "ناحیه پرونده",
     "inputArea": "ناحیه ورودی",
     "functionSwitch": "کلید کارکرد",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "در حال فشرده‌سازی خودکار زمینه...",
     "compacted": "زمینه به‌صورت خودکار فشرده شد"
+  },
+  "newThread": {
+    "title": "بسازید و کاوش کنید"
+  },
+  "permissionMode": {
+    "default": "مجوزهای پیش‌فرض",
+    "fullAccess": "دسترسی کامل"
+  },
+  "sidebar": {
+    "allAgents": "همه عامل‌ها",
+    "expandSidebar": "گسترش نوار کناری",
+    "collapseSidebar": "جمع کردن نوار کناری",
+    "groupByDate": "گروه‌بندی بر اساس تاریخ",
+    "groupByProject": "گروه‌بندی بر اساس پروژه",
+    "emptyTitle": "هنوز گفت‌وگویی وجود ندارد",
+    "emptyDescription": "برای شروع، یک گفت‌وگوی جدید آغاز کنید"
   }
 }
diff --git a/src/renderer/src/i18n/fa-IR/common.json b/src/renderer/src/i18n/fa-IR/common.json
index dc7b06ffd..d76dc7016 100644
--- a/src/renderer/src/i18n/fa-IR/common.json
+++ b/src/renderer/src/i18n/fa-IR/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} بایت"
+  },
+  "time": {
+    "today": "امروز",
+    "yesterday": "دیروز",
+    "lastWeek": "هفته گذشته",
+    "older": "قدیمی‌تر"
+  },
+  "project": {
+    "select": "انتخاب پروژه",
+    "none": "بدون پروژه",
+    "recent": "پروژه‌های اخیر",
+    "openFolder": "باز کردن پوشه..."
   }
 }
diff --git a/src/renderer/src/i18n/fa-IR/index.ts b/src/renderer/src/i18n/fa-IR/index.ts
index f39124789..ca4f9f7ed 100644
--- a/src/renderer/src/i18n/fa-IR/index.ts
+++ b/src/renderer/src/i18n/fa-IR/index.ts
@@ -10,7 +10,6 @@ import welcome from './welcome.json'
 import components from './components.json'
 import dialog from './dialog.json'
 import model from './model.json'
-import newThread from './newThread.json'
 import routes from './routes.json'
 import artifacts from './artifacts.json'
 import chat from './chat.json'
@@ -44,7 +43,6 @@ export default {
   components,
   dialog,
   model,
-  newThread,
   routes,
   artifacts,
   chat,
diff --git a/src/renderer/src/i18n/fa-IR/newThread.json b/src/renderer/src/i18n/fa-IR/newThread.json
deleted file mode 100644
index c9f0bedd3..000000000
--- a/src/renderer/src/i18n/fa-IR/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "درود",
-  "prompt": "امروز میخواهید درباره چه چیزی بپرسید؟"
-}
diff --git a/src/renderer/src/i18n/fr-FR/chat.json b/src/renderer/src/i18n/fr-FR/chat.json
index d9868939b..358c1f584 100644
--- a/src/renderer/src/i18n/fr-FR/chat.json
+++ b/src/renderer/src/i18n/fr-FR/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "Posez une question ? Vous pouvez citer des outils, des fichiers, des ressources via {'@'}...",
+    "placeholder": "Demandez n'importe quoi à DeepChat, @ pour mentionner des fichiers, / pour les commandes",
     "fileArea": "Zone de fichiers",
     "inputArea": "Zone de saisie",
     "functionSwitch": "Commutateur de fonction",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "Compactage automatique du contexte...",
     "compacted": "Le contexte a été compacté automatiquement"
+  },
+  "newThread": {
+    "title": "Créer et explorer"
+  },
+  "permissionMode": {
+    "default": "Autorisations par défaut",
+    "fullAccess": "Accès complet"
+  },
+  "sidebar": {
+    "allAgents": "Tous les agents",
+    "expandSidebar": "Développer la barre latérale",
+    "collapseSidebar": "Réduire la barre latérale",
+    "groupByDate": "Grouper par date",
+    "groupByProject": "Grouper par projet",
+    "emptyTitle": "Aucune conversation pour le moment",
+    "emptyDescription": "Commencez une nouvelle discussion pour démarrer"
   }
 }
diff --git a/src/renderer/src/i18n/fr-FR/common.json b/src/renderer/src/i18n/fr-FR/common.json
index d501635d7..223afb0e9 100644
--- a/src/renderer/src/i18n/fr-FR/common.json
+++ b/src/renderer/src/i18n/fr-FR/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} octets"
+  },
+  "time": {
+    "today": "Aujourd'hui",
+    "yesterday": "Hier",
+    "lastWeek": "La semaine dernière",
+    "older": "Plus anciennes"
+  },
+  "project": {
+    "select": "Sélectionner un projet",
+    "none": "Aucun projet",
+    "recent": "Projets récents",
+    "openFolder": "Ouvrir un dossier..."
   }
 }
diff --git a/src/renderer/src/i18n/fr-FR/index.ts b/src/renderer/src/i18n/fr-FR/index.ts
index 21f464d99..4cbe2d050 100644
--- a/src/renderer/src/i18n/fr-FR/index.ts
+++ b/src/renderer/src/i18n/fr-FR/index.ts
@@ -10,7 +10,6 @@ import welcome from './welcome.json'
 import components from './components.json'
 import dialog from './dialog.json'
 import model from './model.json'
-import newThread from './newThread.json'
 import routes from './routes.json'
 import artifacts from './artifacts.json'
 import chat from './chat.json'
@@ -45,7 +44,6 @@ export default {
   components,
   dialog,
   model,
-  newThread,
   routes,
   artifacts,
   chat,
diff --git a/src/renderer/src/i18n/fr-FR/newThread.json b/src/renderer/src/i18n/fr-FR/newThread.json
deleted file mode 100644
index 8e8049900..000000000
--- a/src/renderer/src/i18n/fr-FR/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "Bonjour",
-  "prompt": "Que souhaitez-vous demander aujourd'hui ?"
-}
diff --git a/src/renderer/src/i18n/he-IL/chat.json b/src/renderer/src/i18n/he-IL/chat.json
index ecdfb0817..44d0ca47a 100644
--- a/src/renderer/src/i18n/he-IL/chat.json
+++ b/src/renderer/src/i18n/he-IL/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "שאל משהו? ניתן לצטט כלים, קבצים ומשאבים באמצעות {'@'}...",
+    "placeholder": "שאלו את DeepChat כל דבר, השתמשו ב-@ כדי להזכיר קבצים וב-/ לפקודות",
     "fileArea": "אזור קבצים",
     "inputArea": "אזור קלט",
     "functionSwitch": "מתג פונקציות",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "דחיסת ההקשר מתבצעת באופן אוטומטי...",
     "compacted": "ההקשר נדחס אוטומטית"
+  },
+  "newThread": {
+    "title": "בנו וגלו"
+  },
+  "permissionMode": {
+    "default": "הרשאות ברירת מחדל",
+    "fullAccess": "גישה מלאה"
+  },
+  "sidebar": {
+    "allAgents": "כל הסוכנים",
+    "expandSidebar": "הרחב את הסרגל הצדדי",
+    "collapseSidebar": "כווץ את הסרגל הצדדי",
+    "groupByDate": "קבץ לפי תאריך",
+    "groupByProject": "קבץ לפי פרויקט",
+    "emptyTitle": "עדיין אין שיחות",
+    "emptyDescription": "התחילו שיחה חדשה כדי להתחיל"
   }
 }
diff --git a/src/renderer/src/i18n/he-IL/common.json b/src/renderer/src/i18n/he-IL/common.json
index 7fef5cb11..6f0916f1c 100644
--- a/src/renderer/src/i18n/he-IL/common.json
+++ b/src/renderer/src/i18n/he-IL/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} בתים"
+  },
+  "time": {
+    "today": "היום",
+    "yesterday": "אתמול",
+    "lastWeek": "השבוע שעבר",
+    "older": "ישן יותר"
+  },
+  "project": {
+    "select": "בחר פרויקט",
+    "none": "ללא פרויקט",
+    "recent": "פרויקטים אחרונים",
+    "openFolder": "פתח תיקייה..."
   }
 }
diff --git a/src/renderer/src/i18n/he-IL/index.ts b/src/renderer/src/i18n/he-IL/index.ts
index 0bbef06ad..64d3a9def 100644
--- a/src/renderer/src/i18n/he-IL/index.ts
+++ b/src/renderer/src/i18n/he-IL/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -48,7 +47,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/he-IL/newThread.json b/src/renderer/src/i18n/he-IL/newThread.json
deleted file mode 100644
index 0c5c81044..000000000
--- a/src/renderer/src/i18n/he-IL/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "שלום!",
-  "prompt": "על מה תרצה לדבר?"
-}
diff --git a/src/renderer/src/i18n/ja-JP/chat.json b/src/renderer/src/i18n/ja-JP/chat.json
index 6ff8ccdc9..9ab4b195a 100644
--- a/src/renderer/src/i18n/ja-JP/chat.json
+++ b/src/renderer/src/i18n/ja-JP/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "何か質問は？{'@'}でツール、ファイル、リソースを引用できます...",
+    "placeholder": "DeepChat に何でも聞いてください。@ でファイルをメンション、/ でコマンドを使用できます",
     "fileArea": "ファイルエリア",
     "inputArea": "入力エリア",
     "functionSwitch": "機能スイッチ",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "コンテキストを自動圧縮しています...",
     "compacted": "コンテキストは自動圧縮されました"
+  },
+  "newThread": {
+    "title": "作成して探索"
+  },
+  "permissionMode": {
+    "default": "デフォルト権限",
+    "fullAccess": "フルアクセス"
+  },
+  "sidebar": {
+    "allAgents": "すべてのエージェント",
+    "expandSidebar": "サイドバーを展開",
+    "collapseSidebar": "サイドバーを折りたたむ",
+    "groupByDate": "日付でグループ化",
+    "groupByProject": "プロジェクトでグループ化",
+    "emptyTitle": "まだ会話がありません",
+    "emptyDescription": "新しいチャットを始めましょう"
   }
 }
diff --git a/src/renderer/src/i18n/ja-JP/common.json b/src/renderer/src/i18n/ja-JP/common.json
index f1e9c07d0..2a8d9e3cf 100644
--- a/src/renderer/src/i18n/ja-JP/common.json
+++ b/src/renderer/src/i18n/ja-JP/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} バイト"
+  },
+  "time": {
+    "today": "今日",
+    "yesterday": "昨日",
+    "lastWeek": "先週",
+    "older": "以前"
+  },
+  "project": {
+    "select": "プロジェクトを選択",
+    "none": "プロジェクトなし",
+    "recent": "最近のプロジェクト",
+    "openFolder": "フォルダを開く..."
   }
 }
diff --git a/src/renderer/src/i18n/ja-JP/index.ts b/src/renderer/src/i18n/ja-JP/index.ts
index a6738c07a..29249223a 100644
--- a/src/renderer/src/i18n/ja-JP/index.ts
+++ b/src/renderer/src/i18n/ja-JP/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -46,7 +45,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/ja-JP/newThread.json b/src/renderer/src/i18n/ja-JP/newThread.json
deleted file mode 100644
index b357d3993..000000000
--- a/src/renderer/src/i18n/ja-JP/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "こんにちは",
-  "prompt": "今日は何を聞きたいですか？"
-}
diff --git a/src/renderer/src/i18n/ko-KR/chat.json b/src/renderer/src/i18n/ko-KR/chat.json
index f8b05b3d1..73cb91d40 100644
--- a/src/renderer/src/i18n/ko-KR/chat.json
+++ b/src/renderer/src/i18n/ko-KR/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "질문하세요. {'@'}를 통해 도구, 파일, 리소스를 인용할 수 있습니다...",
+    "placeholder": "DeepChat에 무엇이든 물어보세요. @로 파일을 언급하고 /로 명령을 사용할 수 있습니다",
     "fileArea": "파일 영역",
     "inputArea": "입력 영역",
     "functionSwitch": "기능 전환",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "컨텍스트를 자동 압축하는 중...",
     "compacted": "컨텍스트가 자동으로 압축되었습니다"
+  },
+  "newThread": {
+    "title": "만들고 탐색하기"
+  },
+  "permissionMode": {
+    "default": "기본 권한",
+    "fullAccess": "전체 접근"
+  },
+  "sidebar": {
+    "allAgents": "모든 에이전트",
+    "expandSidebar": "사이드바 펼치기",
+    "collapseSidebar": "사이드바 접기",
+    "groupByDate": "날짜별 그룹화",
+    "groupByProject": "프로젝트별 그룹화",
+    "emptyTitle": "아직 대화가 없습니다",
+    "emptyDescription": "새 대화를 시작해 보세요"
   }
 }
diff --git a/src/renderer/src/i18n/ko-KR/common.json b/src/renderer/src/i18n/ko-KR/common.json
index 8482710f9..a9149ed03 100644
--- a/src/renderer/src/i18n/ko-KR/common.json
+++ b/src/renderer/src/i18n/ko-KR/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} 바이트"
+  },
+  "time": {
+    "today": "오늘",
+    "yesterday": "어제",
+    "lastWeek": "지난 주",
+    "older": "이전"
+  },
+  "project": {
+    "select": "프로젝트 선택",
+    "none": "프로젝트 없음",
+    "recent": "최근 프로젝트",
+    "openFolder": "폴더 열기..."
   }
 }
diff --git a/src/renderer/src/i18n/ko-KR/index.ts b/src/renderer/src/i18n/ko-KR/index.ts
index c63cac55e..404c0ee75 100644
--- a/src/renderer/src/i18n/ko-KR/index.ts
+++ b/src/renderer/src/i18n/ko-KR/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -47,7 +46,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/ko-KR/newThread.json b/src/renderer/src/i18n/ko-KR/newThread.json
deleted file mode 100644
index adeee0bde..000000000
--- a/src/renderer/src/i18n/ko-KR/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "안녕하세요",
-  "prompt": "오늘은 무엇을 물어보시겠습니까?"
-}
diff --git a/src/renderer/src/i18n/pt-BR/chat.json b/src/renderer/src/i18n/pt-BR/chat.json
index 483cee8eb..4324384b5 100644
--- a/src/renderer/src/i18n/pt-BR/chat.json
+++ b/src/renderer/src/i18n/pt-BR/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "Pergunte algo? Você pode citar ferramentas, arquivos, recursos usando {'@'}...",
+    "placeholder": "Pergunte qualquer coisa ao DeepChat, @ para mencionar arquivos, / para comandos",
     "fileArea": "Área de Arquivos",
     "inputArea": "Área de Entrada",
     "functionSwitch": "Alternar Função",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "Compactando o contexto automaticamente...",
     "compacted": "O contexto foi compactado automaticamente"
+  },
+  "newThread": {
+    "title": "Criar e explorar"
+  },
+  "permissionMode": {
+    "default": "Permissões padrão",
+    "fullAccess": "Acesso total"
+  },
+  "sidebar": {
+    "allAgents": "Todos os agentes",
+    "expandSidebar": "Expandir barra lateral",
+    "collapseSidebar": "Recolher barra lateral",
+    "groupByDate": "Agrupar por data",
+    "groupByProject": "Agrupar por projeto",
+    "emptyTitle": "Ainda não há conversas",
+    "emptyDescription": "Inicie um novo chat para começar"
   }
 }
diff --git a/src/renderer/src/i18n/pt-BR/common.json b/src/renderer/src/i18n/pt-BR/common.json
index 6f7f5f7b5..2024ebca9 100644
--- a/src/renderer/src/i18n/pt-BR/common.json
+++ b/src/renderer/src/i18n/pt-BR/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} bytes"
+  },
+  "time": {
+    "today": "Hoje",
+    "yesterday": "Ontem",
+    "lastWeek": "Semana passada",
+    "older": "Mais antigos"
+  },
+  "project": {
+    "select": "Selecionar projeto",
+    "none": "Sem projeto",
+    "recent": "Projetos recentes",
+    "openFolder": "Abrir pasta..."
   }
 }
diff --git a/src/renderer/src/i18n/pt-BR/index.ts b/src/renderer/src/i18n/pt-BR/index.ts
index 805ce6a94..1d6b07423 100644
--- a/src/renderer/src/i18n/pt-BR/index.ts
+++ b/src/renderer/src/i18n/pt-BR/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -47,7 +46,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/pt-BR/newThread.json b/src/renderer/src/i18n/pt-BR/newThread.json
deleted file mode 100644
index 0a600da09..000000000
--- a/src/renderer/src/i18n/pt-BR/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "Olá!",
-  "prompt": "Em que posso ajudar?"
-}
diff --git a/src/renderer/src/i18n/ru-RU/chat.json b/src/renderer/src/i18n/ru-RU/chat.json
index 4d670099f..b1eef0135 100644
--- a/src/renderer/src/i18n/ru-RU/chat.json
+++ b/src/renderer/src/i18n/ru-RU/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "Задайте вопрос? Вы можете ссылаться на инструменты, файлы, ресурсы через {'@'}...",
+    "placeholder": "Спросите DeepChat о чем угодно, @ чтобы упомянуть файлы, / для команд",
     "fileArea": "Область файлов",
     "inputArea": "Область ввода",
     "functionSwitch": "Переключатель функций",
@@ -210,5 +210,21 @@
   "compaction": {
     "compacting": "Контекст автоматически сжимается...",
     "compacted": "Контекст был автоматически сжат"
+  },
+  "newThread": {
+    "title": "Создавайте и исследуйте"
+  },
+  "permissionMode": {
+    "default": "Разрешения по умолчанию",
+    "fullAccess": "Полный доступ"
+  },
+  "sidebar": {
+    "allAgents": "Все агенты",
+    "expandSidebar": "Развернуть боковую панель",
+    "collapseSidebar": "Свернуть боковую панель",
+    "groupByDate": "Группировать по дате",
+    "groupByProject": "Группировать по проекту",
+    "emptyTitle": "Пока нет диалогов",
+    "emptyDescription": "Начните новый чат, чтобы приступить"
   }
 }
diff --git a/src/renderer/src/i18n/ru-RU/common.json b/src/renderer/src/i18n/ru-RU/common.json
index 772f1a532..86351b67b 100644
--- a/src/renderer/src/i18n/ru-RU/common.json
+++ b/src/renderer/src/i18n/ru-RU/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} байт"
+  },
+  "time": {
+    "today": "Сегодня",
+    "yesterday": "Вчера",
+    "lastWeek": "На прошлой неделе",
+    "older": "Ранее"
+  },
+  "project": {
+    "select": "Выбрать проект",
+    "none": "Нет проекта",
+    "recent": "Недавние проекты",
+    "openFolder": "Открыть папку..."
   }
 }
diff --git a/src/renderer/src/i18n/ru-RU/index.ts b/src/renderer/src/i18n/ru-RU/index.ts
index 46bf0e6b8..1241e68b2 100644
--- a/src/renderer/src/i18n/ru-RU/index.ts
+++ b/src/renderer/src/i18n/ru-RU/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import promptSetting from './promptSetting.json'
 import plan from './plan.json'
@@ -46,7 +45,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   promptSetting,
   plan,
diff --git a/src/renderer/src/i18n/ru-RU/newThread.json b/src/renderer/src/i18n/ru-RU/newThread.json
deleted file mode 100644
index 09f3e093e..000000000
--- a/src/renderer/src/i18n/ru-RU/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "Здравствуйте",
-  "prompt": "Что бы вы хотели спросить сегодня?"
-}
diff --git a/src/renderer/src/i18n/zh-CN/chat.json b/src/renderer/src/i18n/zh-CN/chat.json
index b500ab907..df3e78f9f 100644
--- a/src/renderer/src/i18n/zh-CN/chat.json
+++ b/src/renderer/src/i18n/zh-CN/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "问点什么？可以通过{'@'}来引用工具、文件、资源...",
+    "placeholder": "向 DeepChat 发送消息，@ 可引用文件，/ 可使用命令",
     "fileArea": "文件区域",
     "inputArea": "输入区域",
     "functionSwitch": "功能开关",
@@ -210,5 +210,21 @@
         "aborted": "已中止"
       }
     }
+  },
+  "newThread": {
+    "title": "构建与探索"
+  },
+  "permissionMode": {
+    "default": "默认权限",
+    "fullAccess": "完全访问"
+  },
+  "sidebar": {
+    "allAgents": "所有 Agents",
+    "expandSidebar": "展开侧边栏",
+    "collapseSidebar": "收起侧边栏",
+    "groupByDate": "按时间分组",
+    "groupByProject": "按项目分组",
+    "emptyTitle": "还没有会话",
+    "emptyDescription": "开始一个新会话吧"
   }
 }
diff --git a/src/renderer/src/i18n/zh-CN/common.json b/src/renderer/src/i18n/zh-CN/common.json
index f30a31af4..f76e86b71 100644
--- a/src/renderer/src/i18n/zh-CN/common.json
+++ b/src/renderer/src/i18n/zh-CN/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} 字节"
+  },
+  "time": {
+    "today": "今天",
+    "yesterday": "昨天",
+    "lastWeek": "最近一周",
+    "older": "更早"
+  },
+  "project": {
+    "select": "选择项目",
+    "none": "未关联项目",
+    "recent": "最近项目",
+    "openFolder": "打开文件夹..."
   }
 }
diff --git a/src/renderer/src/i18n/zh-CN/index.ts b/src/renderer/src/i18n/zh-CN/index.ts
index 514dcc30f..a11c62de6 100644
--- a/src/renderer/src/i18n/zh-CN/index.ts
+++ b/src/renderer/src/i18n/zh-CN/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import contextMenu from './contextMenu.json'
 import promptSetting from './promptSetting.json'
@@ -49,7 +48,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   contextMenu,
   promptSetting,
diff --git a/src/renderer/src/i18n/zh-CN/newThread.json b/src/renderer/src/i18n/zh-CN/newThread.json
deleted file mode 100644
index 3a89e1f86..000000000
--- a/src/renderer/src/i18n/zh-CN/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "你好呀",
-  "prompt": "今天你想问点什么？"
-}
diff --git a/src/renderer/src/i18n/zh-HK/chat.json b/src/renderer/src/i18n/zh-HK/chat.json
index 2d8076ab4..14bd44c5c 100644
--- a/src/renderer/src/i18n/zh-HK/chat.json
+++ b/src/renderer/src/i18n/zh-HK/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "問點什麼？可以通過{'@'}來引用工具、文件、資源...",
+    "placeholder": "向 DeepChat 發送訊息，@ 可引用檔案，/ 可使用指令",
     "fileArea": "文件區域",
     "inputArea": "輸入區域",
     "functionSwitch": "功能開關",
@@ -210,5 +210,21 @@
       "manage": "管理",
       "title": "技能"
     }
+  },
+  "newThread": {
+    "title": "建構與探索"
+  },
+  "permissionMode": {
+    "default": "預設權限",
+    "fullAccess": "完全存取"
+  },
+  "sidebar": {
+    "allAgents": "所有 Agents",
+    "expandSidebar": "展開側邊欄",
+    "collapseSidebar": "收起側邊欄",
+    "groupByDate": "按時間分組",
+    "groupByProject": "按專案分組",
+    "emptyTitle": "還沒有對話",
+    "emptyDescription": "開始一個新對話吧"
   }
 }
diff --git a/src/renderer/src/i18n/zh-HK/common.json b/src/renderer/src/i18n/zh-HK/common.json
index 933145fa5..8f7fb40b8 100644
--- a/src/renderer/src/i18n/zh-HK/common.json
+++ b/src/renderer/src/i18n/zh-HK/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} 位元組"
+  },
+  "time": {
+    "today": "今天",
+    "yesterday": "昨天",
+    "lastWeek": "最近一週",
+    "older": "更早"
+  },
+  "project": {
+    "select": "選擇專案",
+    "none": "未關聯專案",
+    "recent": "最近專案",
+    "openFolder": "開啟資料夾..."
   }
 }
diff --git a/src/renderer/src/i18n/zh-HK/index.ts b/src/renderer/src/i18n/zh-HK/index.ts
index 8617a95c4..0e42bf9d7 100644
--- a/src/renderer/src/i18n/zh-HK/index.ts
+++ b/src/renderer/src/i18n/zh-HK/index.ts
@@ -12,7 +12,6 @@ import artifacts from './artifacts.json'
 import sync from './sync.json'
 import toolCall from './toolCall.json'
 import components from './components.json'
-import newThread from './newThread.json'
 import about from './about.json'
 import promptSetting from './promptSetting.json'
 import plan from './plan.json'
@@ -47,7 +46,6 @@ export default {
   sync,
   toolCall,
   components,
-  newThread,
   about,
   promptSetting,
   plan,
diff --git a/src/renderer/src/i18n/zh-HK/newThread.json b/src/renderer/src/i18n/zh-HK/newThread.json
deleted file mode 100644
index 35fc824ad..000000000
--- a/src/renderer/src/i18n/zh-HK/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "你好呀",
-  "prompt": "今天你想問點什麼？"
-}
diff --git a/src/renderer/src/i18n/zh-TW/chat.json b/src/renderer/src/i18n/zh-TW/chat.json
index 27e7680d4..84561a3c1 100644
--- a/src/renderer/src/i18n/zh-TW/chat.json
+++ b/src/renderer/src/i18n/zh-TW/chat.json
@@ -1,6 +1,6 @@
 {
   "input": {
-    "placeholder": "問點什麼？可以通過{'@'}來引用工具、文件、資源...",
+    "placeholder": "向 DeepChat 傳送訊息，@ 可引用檔案，/ 可使用指令",
     "fileArea": "檔案區域",
     "inputArea": "輸入區域",
     "functionSwitch": "功能切換",
@@ -210,5 +210,21 @@
       "manage": "管理",
       "title": "技能"
     }
+  },
+  "newThread": {
+    "title": "建構與探索"
+  },
+  "permissionMode": {
+    "default": "預設權限",
+    "fullAccess": "完全存取"
+  },
+  "sidebar": {
+    "allAgents": "所有 Agents",
+    "expandSidebar": "展開側邊欄",
+    "collapseSidebar": "收起側邊欄",
+    "groupByDate": "依時間分組",
+    "groupByProject": "依專案分組",
+    "emptyTitle": "還沒有對話",
+    "emptyDescription": "開始新的對話吧"
   }
 }
diff --git a/src/renderer/src/i18n/zh-TW/common.json b/src/renderer/src/i18n/zh-TW/common.json
index 04e716bce..8e96e8e5c 100644
--- a/src/renderer/src/i18n/zh-TW/common.json
+++ b/src/renderer/src/i18n/zh-TW/common.json
@@ -99,5 +99,17 @@
   },
   "size": {
     "bytes": "{count} 位元組"
+  },
+  "time": {
+    "today": "今天",
+    "yesterday": "昨天",
+    "lastWeek": "最近一週",
+    "older": "更早"
+  },
+  "project": {
+    "select": "選擇專案",
+    "none": "未關聯專案",
+    "recent": "最近專案",
+    "openFolder": "開啟資料夾..."
   }
 }
diff --git a/src/renderer/src/i18n/zh-TW/index.ts b/src/renderer/src/i18n/zh-TW/index.ts
index b43849c22..05c9ff310 100644
--- a/src/renderer/src/i18n/zh-TW/index.ts
+++ b/src/renderer/src/i18n/zh-TW/index.ts
@@ -7,7 +7,6 @@ import sync from './sync.json'
 import thread from './thread.json'
 import mcp from './mcp.json'
 import model from './model.json'
-import newThread from './newThread.json'
 import components from './components.json'
 import dialog from './dialog.json'
 import about from './about.json'
@@ -41,7 +40,6 @@ export default {
   dialog,
   settings,
   welcome,
-  newThread,
   about,
   artifacts,
   sync,
diff --git a/src/renderer/src/i18n/zh-TW/newThread.json b/src/renderer/src/i18n/zh-TW/newThread.json
deleted file mode 100644
index d03aabc44..000000000
--- a/src/renderer/src/i18n/zh-TW/newThread.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "greeting": "您好",
-  "prompt": "今天您想問些什麼呢？"
-}
diff --git a/src/renderer/src/pages/ChatPage.vue b/src/renderer/src/pages/ChatPage.vue
index ada614014..21a90193f 100644
--- a/src/renderer/src/pages/ChatPage.vue
+++ b/src/renderer/src/pages/ChatPage.vue
@@ -67,6 +67,7 @@
 
 <script setup lang="ts">
 import { ref, computed, watch, nextTick, onMounted, onUnmounted } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { TooltipProvider } from '@shadcn/components/ui/tooltip'
 import ChatTopBar from '@/components/chat/ChatTopBar.vue'
 import MessageList from '@/components/chat/MessageList.vue'
@@ -97,8 +98,9 @@ const sessionStore = useSessionStore()
 const messageStore = useMessageStore()
 const modelStore = useModelStore()
 const newAgentPresenter = usePresenter('newAgentPresenter')
+const { t } = useI18n()
 
-const sessionTitle = computed(() => sessionStore.activeSession?.title ?? 'New Chat')
+const sessionTitle = computed(() => sessionStore.activeSession?.title ?? t('common.newChat'))
 const sessionProject = computed(() => sessionStore.activeSession?.projectDir ?? '')
 const isGenerating = computed(
   () => sessionStore.activeSession?.status === 'working' || messageStore.isStreaming
diff --git a/src/renderer/src/pages/NewThreadPage.vue b/src/renderer/src/pages/NewThreadPage.vue
index c080fef69..2421ab242 100644
--- a/src/renderer/src/pages/NewThreadPage.vue
+++ b/src/renderer/src/pages/NewThreadPage.vue
@@ -9,7 +9,9 @@
         </div>
 
         <!-- Heading -->
-        <h1 class="text-3xl font-semibold text-foreground mb-4">Build and explore</h1>
+        <h1 class="text-3xl font-semibold text-foreground mb-4">
+          {{ t('chat.newThread.title') }}
+        </h1>
 
         <!-- Project selector -->
         <DropdownMenu>
@@ -20,12 +22,12 @@
               class="h-7 px-2.5 gap-1.5 text-xs text-muted-foreground hover:text-foreground mb-6"
             >
               <Icon icon="lucide:folder" class="w-3.5 h-3.5" />
-              <span>{{ projectStore.selectedProjectName }}</span>
+              <span>{{ selectedProjectName }}</span>
               <Icon icon="lucide:chevron-down" class="w-3 h-3" />
             </Button>
           </DropdownMenuTrigger>
           <DropdownMenuContent align="center" class="min-w-[200px]">
-            <DropdownMenuLabel class="text-xs">Recent Projects</DropdownMenuLabel>
+            <DropdownMenuLabel class="text-xs">{{ t('common.project.recent') }}</DropdownMenuLabel>
             <DropdownMenuItem
               v-for="project in projectStore.projects"
               :key="project.path"
@@ -44,7 +46,7 @@
               @click="projectStore.openFolderPicker()"
             >
               <Icon icon="lucide:folder-open" class="w-3.5 h-3.5 text-muted-foreground" />
-              <span>Open folder...</span>
+              <span>{{ t('common.project.openFolder') }}</span>
             </DropdownMenuItem>
           </DropdownMenuContent>
         </DropdownMenu>
@@ -81,6 +83,7 @@
 
 <script setup lang="ts">
 import { computed, onMounted, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { TooltipProvider } from '@shadcn/components/ui/tooltip'
 import { Button } from '@shadcn/components/ui/button'
 import {
@@ -111,6 +114,7 @@ const modelStore = useModelStore()
 const draftStore = useDraftStore()
 const configPresenter = usePresenter('configPresenter')
 const newAgentPresenter = usePresenter('newAgentPresenter')
+const { t } = useI18n()
 
 const message = ref('')
 const attachedFiles = ref<ChatMessageFile[]>([])
@@ -122,6 +126,9 @@ const chatInputRef = ref<{
 const acpDraftSessionId = ref<string | null>(null)
 const lastAcpDraftKey = ref<string | null>(null)
 const acpDraftRequestSeq = ref(0)
+const selectedProjectName = computed(
+  () => projectStore.selectedProject?.name ?? t('common.project.select')
+)
 const isAcpWorkdirMissing = computed(() => {
   const selectedAgentId = agentStore.selectedAgentId ?? 'deepchat'
   if (selectedAgentId === 'deepchat') {
diff --git a/src/renderer/src/stores/ui/agent.ts b/src/renderer/src/stores/ui/agent.ts
index 757be9475..ab5795f1c 100644
--- a/src/renderer/src/stores/ui/agent.ts
+++ b/src/renderer/src/stores/ui/agent.ts
@@ -27,7 +27,6 @@ export const useAgentStore = defineStore('agent', () => {
   // --- Getters ---
   const enabledAgents = computed(() => agents.value.filter((a) => a.enabled))
   const selectedAgent = computed(() => agents.value.find((a) => a.id === selectedAgentId.value))
-  const selectedAgentName = computed(() => selectedAgent.value?.name ?? 'All Agents')
 
   // --- Actions ---
 
@@ -73,7 +72,6 @@ export const useAgentStore = defineStore('agent', () => {
     error,
     enabledAgents,
     selectedAgent,
-    selectedAgentName,
     setSelectedAgent,
     fetchAgents,
     selectAgent
diff --git a/src/renderer/src/stores/ui/project.ts b/src/renderer/src/stores/ui/project.ts
index a03a630a1..76aba829b 100644
--- a/src/renderer/src/stores/ui/project.ts
+++ b/src/renderer/src/stores/ui/project.ts
@@ -25,7 +25,6 @@ export const useProjectStore = defineStore('project', () => {
   const selectedProject = computed(() =>
     projects.value.find((p) => p.path === selectedProjectPath.value)
   )
-  const selectedProjectName = computed(() => selectedProject.value?.name ?? 'Select project')
 
   // --- Actions ---
 
@@ -66,7 +65,6 @@ export const useProjectStore = defineStore('project', () => {
     selectedProjectPath,
     error,
     selectedProject,
-    selectedProjectName,
     fetchProjects,
     selectProject,
     openFolderPicker
diff --git a/src/renderer/src/stores/ui/session.ts b/src/renderer/src/stores/ui/session.ts
index 25aaa3032..a254e29ef 100644
--- a/src/renderer/src/stores/ui/session.ts
+++ b/src/renderer/src/stores/ui/session.ts
@@ -32,6 +32,7 @@ export interface UISession {
 
 export interface SessionGroup {
   label: string
+  labelKey?: string
   sessions: UISession[]
 }
 
@@ -81,33 +82,34 @@ function groupByTime(sessions: UISession[]): SessionGroup[] {
   const lastWeek = startOfDay(now - 7 * 86400000)
 
   const groups: Record<string, UISession[]> = {
-    Today: [],
-    Yesterday: [],
-    'Last Week': [],
-    Older: []
+    'common.time.today': [],
+    'common.time.yesterday': [],
+    'common.time.lastWeek': [],
+    'common.time.older': []
   }
 
   for (const s of sessions) {
-    if (s.updatedAt >= today) groups['Today'].push(s)
-    else if (s.updatedAt >= yesterday) groups['Yesterday'].push(s)
-    else if (s.updatedAt >= lastWeek) groups['Last Week'].push(s)
-    else groups['Older'].push(s)
+    if (s.updatedAt >= today) groups['common.time.today'].push(s)
+    else if (s.updatedAt >= yesterday) groups['common.time.yesterday'].push(s)
+    else if (s.updatedAt >= lastWeek) groups['common.time.lastWeek'].push(s)
+    else groups['common.time.older'].push(s)
   }
 
   return Object.entries(groups)
     .filter(([, sessions]) => sessions.length > 0)
-    .map(([label, sessions]) => ({ label, sessions }))
+    .map(([labelKey, sessions]) => ({ label: labelKey, labelKey, sessions }))
 }
 
 function groupByProject(sessions: UISession[]): SessionGroup[] {
   const projectMap = new Map<string, UISession[]>()
   for (const session of sessions) {
-    const dir = session.projectDir || 'No Project'
+    const dir = session.projectDir.trim() || '__no_project__'
     if (!projectMap.has(dir)) projectMap.set(dir, [])
     projectMap.get(dir)!.push(session)
   }
   return Array.from(projectMap.entries()).map(([dir, sessions]) => ({
-    label: dir.split('/').pop() ?? dir,
+    label: dir === '__no_project__' ? 'common.project.none' : (dir.split('/').pop() ?? dir),
+    labelKey: dir === '__no_project__' ? 'common.project.none' : undefined,
     sessions
   }))
 }
@@ -360,6 +362,7 @@ export const useSessionStore = defineStore('session', () => {
     return grouped
       .map((group) => ({
         label: group.label,
+        labelKey: group.labelKey,
         sessions: group.sessions.filter((s) => s.agentId === agentId)
       }))
       .filter((group) => group.sessions.length > 0)
diff --git a/test/renderer/components/WindowSideBar.test.ts b/test/renderer/components/WindowSideBar.test.ts
index 1f466fafd..3dcc2ce42 100644
--- a/test/renderer/components/WindowSideBar.test.ts
+++ b/test/renderer/components/WindowSideBar.test.ts
@@ -6,6 +6,7 @@ type SetupOptions = {
   pinnedSessions?: Array<{ id: string; title: string; status: string }>
   groups?: Array<{
     label: string
+    labelKey?: string
     sessions: Array<{ id: string; title: string; status: string }>
   }>
 }
@@ -116,7 +117,8 @@ describe('WindowSideBar agent switch', () => {
       ],
       groups: [
         {
-          label: 'Today',
+          label: 'common.time.today',
+          labelKey: 'common.time.today',
           sessions: [
             {
               id: 'normal-1',
@@ -131,7 +133,7 @@ describe('WindowSideBar agent switch', () => {
     await wrapper.vm.$nextTick()
 
     expect(wrapper.text()).toContain('Pinned Session')
-    expect(wrapper.text()).toContain('Today')
+    expect(wrapper.text()).toContain('common.time.today')
     expect(wrapper.text()).toContain('Normal Session')
   })
 })
diff --git a/test/renderer/stores/sessionStore.test.ts b/test/renderer/stores/sessionStore.test.ts
index 2d926db3a..56747fe9b 100644
--- a/test/renderer/stores/sessionStore.test.ts
+++ b/test/renderer/stores/sessionStore.test.ts
@@ -94,6 +94,7 @@ describe('sessionStore.getFilteredGroups', () => {
     const groups = store.getFilteredGroups(null)
     const ids = groups.flatMap((group) => group.sessions.map((session) => session.id))
 
+    expect(groups[0]?.labelKey).toBe('common.time.today')
     expect(ids).toEqual(['real-1'])
   })