style: 统一主体列表搜索与统计布局

src/admin.css

@@ -1340,15 +1340,25 @@ body {
 .casting-item-status {
     flex-shrink: 0;
 }
-.search-field {
-    padding: 0;
-    border: 0;
-    background: transparent;
-    min-width: 180px;
+/* 主体搜索靠左，统计紧随输入框；窄内容区自然换行，不占满整行或挤压控件。 */
+.subject-list-toolbar {
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    justify-content: flex-start;
+    gap: 10px 12px;
+    margin-bottom: 20px;
 }
-.search-field input {
-    width: 100%;
-    font-size: inherit;
+.subject-list-search.n-input {
+    flex: 0 1 260px;
+    min-width: 0;
+    max-width: 100%;
+}
+.subject-list-count {
+    flex-shrink: 0;
+    color: var(--app-muted);
+    font-size: 12px;
+    white-space: nowrap;
 }
 .select-control {
     min-width: 130px;