fix: 嵌入模型下拉收窄并与工具栏同行

css/style.css

@@ -1885,19 +1885,31 @@ body::before {
 .kb-toolbar {
     display: flex;
     align-items: center;
-    justify-content: space-between;
     gap: 8px;
     flex-shrink: 0;
+    flex-wrap: wrap;
 }
-.kb-toolbar-left {
-    display: flex;
-    align-items: center;
-    gap: 8px;
+.kb-embed-select {
+    flex: 1;
+    min-width: 0;
+    max-width: 200px;
+    padding: 5px 8px;
+    font-size: 12px;
+    background: var(--bg-secondary);
+    color: var(--text-primary);
+    border: 1px solid var(--border-glass);
+    border-radius: 6px;
+    outline: none;
+    cursor: pointer;
 }
-.kb-toolbar-right {
+.kb-embed-select:focus {
+    border-color: var(--accent-cyan);
+}
+.kb-rag-toggle {
     display: flex;
     align-items: center;
     gap: 6px;
+    margin-left: auto;
     white-space: nowrap;
 }
 
@@ -1923,22 +1935,6 @@ body::before {
     to { transform: rotate(360deg); }
 }
 
-.kb-embed-model {
-    display: flex;
-    align-items: center;
-    gap: 8px;
-    flex-shrink: 0;
-}
-.kb-embed-model .setting-label {
-    flex-shrink: 0;
-}
-.kb-embed-model .model-select {
-    flex: 1;
-    min-width: 0;
-    padding: 5px 8px;
-    font-size: 12px;
-}
-
 .kb-doc-list {
     flex: 1;
     overflow-y: auto;