简化TabPage标签布局：使用tab-spacer元素占据中间空间，实现标题靠左显示、关闭按钮靠右显示

AutoRobot/Windows/Robot/Web/src/DockLayout/TabPage.vue

@@ -8,23 +8,18 @@
         :class="['tab-item', { 'active': activeTabIndex === index }]"
         @click="setActiveTab(index)"
       >
-        <div class="flex items-center justify-between w-full">
+        <span class="tab-title">{{ panel.title }}</span>
-          <div class="tab-title-container">
+        <span class="tab-spacer"></span>
-            <span class="tab-title-text">{{ panel.title }}</span>
+        <button 
-          </div>
+          class="button-icon p-[2px] rounded hover:opacity-100 opacity-80"
-          <div class="tab-buttons-container">
+          @click.stop="closeTab(panel.id)"
-            <button 
+          aria-label="关闭"
-              class="button-icon p-[2px] rounded hover:opacity-100 opacity-80"
+        >
-              @click.stop="closeTab(panel.id)"
+          <svg width="11" height="11" viewBox="0 0 11 11" aria-hidden="true">
-              aria-label="关闭"
+            <line x1="2" y1="2" x2="9" y2="9" stroke="#e6efff" stroke-width="1" />
-            >
+            <line x1="2" y1="9" x2="9" y2="2" stroke="#e6efff" stroke-width="1" />
-              <svg width="11" height="11" viewBox="0 0 11 11" aria-hidden="true">
+          </svg>
-                <line x1="2" y1="2" x2="9" y2="9" stroke="#e6efff" stroke-width="1" />
+        </button>
-                <line x1="2" y1="9" x2="9" y2="2" stroke="#e6efff" stroke-width="1" />
-              </svg>
-            </button>
-          </div>
-        </div>
       </div>
       <div class="tab-placeholder"></div>
     </div>
@@ -121,24 +116,18 @@ const closeTab = (tabId) => {
   width: fit-content;
 }
 
-.tab-title-container {
+.tab-title {
-  display: flex;
-  align-items: center;
-  flex: 1;
-  margin-right: 8px;
-}
-
-.tab-title-text {
   text-align: left;
   min-width: 0;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
+  margin-right: 8px;
 }
 
-.tab-buttons-container {
+.tab-spacer {
-  display: flex;
+  flex: 1;
-  align-items: center;
+  min-width: 0;
 }
 
 .tab-item.active {