feat: 移动收齐侧边栏功能按钮到对话区域Header，删除侧边栏Header；扩大对话区域padding-left-right，解除输出框max-width使其对齐对话区域；

src/components/chat/ChatHeader.vue

@@ -3,12 +3,12 @@
     <!-- 左侧：侧边栏切换和标题 -->
     <div class="header-left">
       <button
-        v-if="showSidebarToggle"
         class="toggle-sidebar-btn"
         title="切换侧边栏 (Ctrl+B)"
         @click="$emit('toggle-sidebar')"
       >
-        <Menu :size="20" />
+        <Menu v-if="showSidebarToggle" :size="20" />
+        <ChevronLeft v-else :size="18" />
       </button>
 
       <div class="conversation-info">
@@ -93,6 +93,7 @@ import {
   Minimize2,
   Trash2,
   Download,
+  ChevronLeft,
   MoreHorizontal,
   ExternalLink,
   Pin,

src/components/chat/ChatMain.vue

@@ -392,14 +392,14 @@ watch(
 
   &.wide-mode {
     .input-container {
-      max-width: 1000px;
+      min-width: 1000px;
     }
   }
 }
 
 .input-wrapper {
   flex-shrink: 0;
-  padding: 16px 24px 24px;
+  padding: 16px 150px 24px;
   background: linear-gradient(to top, white 80%, transparent);
 
   .dark & {
@@ -408,12 +408,13 @@ watch(
 }
 
 .input-container {
-  max-width: 800px;
+  width: 100%;
-  margin: 0 auto;
+  min-width: 1000px;
+  // margin: 0 auto;
   transition: max-width 0.3s ease;
 
   &.wide {
-    max-width: 1000px;
+    min-width: 1000px;
   }
 }
 </style>

src/components/message/MessageBubble.vue

@@ -276,7 +276,7 @@ setCustomComponents("playground-demo", {
 .message-bubble {
   display: flex;
   gap: 16px;
-  padding: 20px 24px;
+  padding: 20px 150px;
   animation: fadeIn 0.3s ease;
 
   &.role-user {

src/components/sidebar/ChatSidebar.vue

@@ -6,7 +6,7 @@
   >
     <div class="sidebar-inner">
       <!-- 头部 -->
-      <div class="sidebar-header">
+      <!-- <div class="sidebar-header">
         <div class="logo">
           <Bot :size="24" class="logo-icon" />
           <span v-show="!isCollapsed" class="logo-text">Kexue AI Chat</span>
@@ -18,7 +18,7 @@
         >
           <ChevronLeft :size="18" :class="{ rotated: isCollapsed }" />
         </button>
-      </div>
+      </div> -->
 
       <!-- 模型选择 -->
       <div v-show="!isCollapsed" class="model-selector-section">
@@ -60,13 +60,13 @@
       </div>
 
       <!-- 搜索框 -->
-      <div class="search-section">
+      <!-- <div class="search-section">
         <div class="search-box" @click="openSearch">
           <Search :size="16" />
           <span class="search-placeholder">搜索对话...</span>
           <kbd class="search-kbd">⌘K</kbd>
         </div>
-      </div>
+      </div> -->
 
       <!-- 对话列表 -->
       <div class="conversations-section">
@@ -93,8 +93,8 @@
         <!-- 最近对话 -->
         <div class="conversation-group">
           <div class="group-header">
-            <Clock :size="14" />
+            <!-- <Clock :size="14" /> -->
-            <span>最近</span>
+            <span>对话历史</span>
           </div>
           <div class="group-list">
             <ConversationItem
@@ -130,12 +130,14 @@
           <Moon v-else-if="currentTheme === 'dark'" :size="18" />
           <Monitor v-else :size="18" />
         </button>
-        <button class="footer-btn" @click="openShortcuts" title="快捷键">
+        <!-- 键盘快捷键 -->
+        <!-- <button class="footer-btn" @click="openShortcuts" title="快捷键">
           <Keyboard :size="18" />
-        </button>
+        </button> -->
-        <button class="footer-btn" @click="openSettings" title="设置">
+        <!-- dev人员可用 -->
+        <!-- <button class="footer-btn" @click="openSettings" title="设置">
           <Settings :size="18" />
-        </button>
+        </button> -->
       </div>
     </div>