优化默认语言模型获取

core/frontend/src/design-restraint.css

@@ -1314,7 +1314,7 @@ body.sidebar-collapsed .user::after { display: none; }
 .chip.active { border-color: var(--heat-40); color: var(--heat); background: var(--heat-12); }
 .chip svg { width: 12px; height: 12px; }
 /* 清空筛选:幽灵态(无边框/透明底),仅在有筛选时出现,点击重置全部筛选 */
-.chip.chip-clear { border-color: transparent; background: transparent; color: var(--black-alpha-48); padding: 0 8px; }
+.chip.chip-clear { border-color: transparent; background: transparent; color: var(--black-alpha-48); padding: 0 8px; line-height: 1; white-space: nowrap; }
 .chip.chip-clear:hover { background: var(--black-alpha-4); color: var(--accent-black); }
 
 /* ─── Toolbar ─── */

core/frontend/src/library-page.css

@@ -26,7 +26,7 @@
 
 .library-page .lib-head {
   display: flex;
-  align-items: flex-start;
+  align-items: center;
   justify-content: space-between;
   gap: 20px;
   margin-bottom: 18px;

core/frontend/src/models-page.css

@@ -25,7 +25,7 @@
 
 .models-page .ml-head {
   display: flex;
-  align-items: flex-start;
+  align-items: center;
   justify-content: space-between;
   gap: 20px;
   margin-bottom: 18px;
@@ -91,12 +91,16 @@
 .models-page .ml-seg-btn {
   height: 32px;
   padding: 0 12px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
   border: 0;
   border-radius: 8px;
   color: #50555d;
   background: transparent;
   font: inherit;
   font-size: 13px;
+  line-height: 1;
   cursor: pointer;
 }
 .models-page .ml-seg-btn:hover { color: var(--accent-black); }

core/frontend/src/products-page.css

@@ -21,7 +21,7 @@
 
   .pl-head {
     display: flex;
-    align-items: flex-start;
+    align-items: center;
     justify-content: space-between;
     gap: 20px;
     margin-bottom: 18px;
@@ -134,9 +134,9 @@
     flex-wrap: wrap;
   }
 
-  .pl-select { position: relative; width: 150px; flex: 0 0 150px; z-index: 40; }
+  .pl-select { position: relative; width: auto; min-width: 132px; flex: 0 0 auto; z-index: 40; }
   .pl-select.open { z-index: 50; }
-  .pl-select[data-key="cat"] { width: 168px; flex-basis: 168px; }
+  .pl-select[data-key="cat"] { min-width: 148px; }
   .pl-select-trigger {
     width: 100%;
     height: 34px;
@@ -226,14 +226,26 @@
   .pl-clear {
     height: 34px;
     padding: 0 12px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
     border: 0;
     border-radius: 10px;
     color: var(--pl-muted);
     background: transparent;
     font: inherit;
     font-size: 13px;
+    line-height: 1;
+    white-space: nowrap;
+    flex-shrink: 0;
     cursor: pointer;
   }
+  .pl-clear svg {
+    width: 13px;
+    height: 13px;
+    flex: 0 0 auto;
+  }
   .pl-clear:hover { color: var(--accent-black); background: rgba(34, 42, 54, 0.06); }
 
   .pl-view {